Refactor folder (#10475)

Move many third-party components' source codes from the src folder to a new folder called deps_src. The goal is to make the code structure clearer and easier to navigate.

deps_src/CMakeLists.txt

@@ -0,0 +1,35 @@
+cmake_minimum_required(VERSION 3.13)
+project(deps_src)
+
+# Include all dependency subdirectories
+
+# Header-only libraries (INTERFACE)
+add_subdirectory(agg)
+add_subdirectory(ankerl)
+add_subdirectory(fast_float)
+add_subdirectory(nanosvg)
+add_subdirectory(nlohmann)
+add_subdirectory(spline)      # Header-only spline library
+add_subdirectory(stb_dxt)     # Header-only STB DXT compression library
+
+# Static libraries
+add_subdirectory(Shiny)
+add_subdirectory(admesh)
+add_subdirectory(clipper)
+add_subdirectory(expat)
+add_subdirectory(glu-libtess)
+add_subdirectory(hidapi)
+add_subdirectory(hints)        # Hints library with utility executable
+add_subdirectory(imgui)
+add_subdirectory(imguizmo)
+add_subdirectory(libigl)
+add_subdirectory(libnest2d)
+add_subdirectory(mcut)
+add_subdirectory(miniz)
+add_subdirectory(minilzo)
+add_subdirectory(qhull)
+add_subdirectory(qoi)
+add_subdirectory(semver)      # Semver static library
+
+# Eigen header-only library
+add_subdirectory(eigen)

deps_src/README_CMAKE_INTERFACES.md

@@ -0,0 +1,119 @@
+# CMake Interfaces for deps_src Libraries
+
+This document describes how to use the CMake interface libraries created for the subdirectories in `deps_src/`.
+
+## Available Libraries
+
+### 1. **semver** (Static Library)
+- **Type**: Static library
+- **Target**: `semver` or `semver::semver`
+- **Headers**: `semver.h`
+- **Usage**:
+```cmake
+target_link_libraries(your_target PRIVATE semver)
+# or
+target_link_libraries(your_target PRIVATE semver::semver)
+```
+
+### 2. **hints** (Interface Library)
+- **Type**: Interface library (header-only)
+- **Target**: `hints`
+- **Utility**: `hintsToPot` executable
+- **Usage**:
+```cmake
+target_link_libraries(your_target PRIVATE hints)
+```
+
+### 3. **spline** (Interface Library)
+- **Type**: Interface library (header-only)
+- **Target**: `spline` or `spline::spline`
+- **Headers**: `spline.h`
+- **Usage**:
+```cmake
+target_link_libraries(your_target PRIVATE spline)
+# or
+target_link_libraries(your_target PRIVATE spline::spline)
+```
+
+### 4. **stb_dxt** (Interface Library)
+- **Type**: Interface library (header-only)
+- **Target**: `stb_dxt` or `stb_dxt::stb_dxt`
+- **Headers**: `stb_dxt.h`
+- **Usage**:
+```cmake
+target_link_libraries(your_target PRIVATE stb_dxt)
+# or
+target_link_libraries(your_target PRIVATE stb_dxt::stb_dxt)
+```
+
+## How to Use in Your Project
+
+### From within the OrcaSlicer src/ directory:
+
+1. **In your CMakeLists.txt**, simply link the library:
+```cmake
+add_executable(my_app main.cpp)
+target_link_libraries(my_app 
+    PRIVATE 
+        semver::semver      # For version parsing
+        spline::spline      # For spline interpolation
+        stb_dxt::stb_dxt    # For DXT texture compression
+        hints               # For hints functionality
+)
+```
+
+2. **In your C++ code**, include the headers:
+```cpp
+// For semver
+#include <semver.h>
+
+// For spline
+#include <spline.h>
+
+// For stb_dxt
+#include <stb_dxt.h>
+
+// Use the libraries as documented in their respective headers
+```
+
+## Benefits of This Approach
+
+1. **Modern CMake**: Uses target-based CMake with proper INTERFACE/PUBLIC/PRIVATE visibility
+2. **Proper Include Paths**: Automatically sets up include directories
+3. **Namespace Aliases**: Provides namespaced aliases (e.g., `spline::spline`) for clarity
+4. **Position Independent Code**: Static libraries are built with `-fPIC` for compatibility
+5. **Install Support**: Libraries can be installed and used by external projects
+6. **Build/Install Interface**: Separates build-time and install-time include paths
+
+## Example Integration
+
+Here's a complete example of using these libraries in a new component:
+
+```cmake
+# In src/mycomponent/CMakeLists.txt
+add_library(mycomponent STATIC
+    mycomponent.cpp
+    mycomponent.h
+)
+
+target_link_libraries(mycomponent
+    PUBLIC
+        semver::semver  # Version handling is part of public API
+    PRIVATE
+        spline::spline  # Used internally for interpolation
+        stb_dxt::stb_dxt # Used internally for texture compression
+)
+
+target_include_directories(mycomponent
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+        $<INSTALL_INTERFACE:include>
+)
+```
+
+## Notes
+
+- All header-only libraries use the INTERFACE library type, which means they don't produce any binaries
+- The `semver` library produces a static library that will be linked into your target
+- The `hints` project also produces a `hintsToPot` executable utility
+- All libraries require at least C++11 (some require C++17)

deps_src/Shiny/CMakeLists.txt

@@ -0,0 +1,29 @@
+cmake_minimum_required(VERSION 3.13)
+project(Shiny)
+
+add_library(Shiny STATIC
+    Shiny.h
+    ShinyConfig.h
+    ShinyData.h
+    ShinyMacros.h
+    ShinyManager.c
+    ShinyManager.h
+    ShinyNode.c
+    ShinyNode.h
+    ShinyNodePool.c
+    ShinyNodePool.h
+    ShinyNodeState.c
+    ShinyNodeState.h
+    ShinyOutput.c
+    ShinyOutput.h
+    ShinyPrereqs.h
+    ShinyTools.c
+    ShinyTools.h
+    ShinyVersion.h
+    ShinyZone.c
+    ShinyZone.h
+)
+
+target_include_directories(Shiny PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)

deps_src/Shiny/Shiny.h

@@ -0,0 +1,36 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_H
+#define SHINY_H
+
+/*---------------------------------------------------------------------------*/
+
+#include "ShinyMacros.h"
+
+#ifdef SLIC3R_PROFILE
+#include "ShinyManager.h"
+#endif /* SLIC3R_PROFILE */
+
+#endif /* SHINY_H */

deps_src/Shiny/ShinyConfig.h

@@ -0,0 +1,61 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_CONFIG_H
+#define SHINY_CONFIG_H
+
+
+/*---------------------------------------------------------------------------*/
+
+/* if SHINY_LOOKUP_RATE is defined to TRUE then Shiny will record the success of its hash function. This is useful for debugging. Default is FALSE.
+ */
+#ifndef SHINY_LOOKUP_RATE
+// #define SHINY_LOOKUP_RATE		FALSE
+#endif
+
+/* if SHINY_HAS_ENABLED is defined to TRUE then Shiny can be enabled and disabled at runtime. TODO: bla bla...
+ */
+#ifndef SHINY_HAS_ENABLED
+// #define SHINY_HAS_ENABLED		FALSE
+#endif
+
+/* TODO: 
+ */
+#define SHINY_OUTPUT_MODE_FLAT	0x1
+
+/* TODO: 
+ */
+#define SHINY_OUTPUT_MODE_TREE	0x2
+
+/* TODO: 
+ */
+#define SHINY_OUTPUT_MODE_BOTH	0x3
+
+/* TODO: 
+ */
+#ifndef SHINY_OUTPUT_MODE
+#define SHINY_OUTPUT_MODE		SHINY_OUTPUT_MODE_BOTH
+#endif
+
+#endif /* SHINY_CONFIG_H */

deps_src/Shiny/ShinyData.h

@@ -0,0 +1,102 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_DATA_H
+#define SHINY_DATA_H
+
+#include "ShinyPrereqs.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+typedef struct {
+	uint32_t entryCount;
+	shinytick_t selfTicks;
+} ShinyLastData;
+
+
+/*---------------------------------------------------------------------------*/
+
+typedef struct {
+	shinytick_t cur;
+	float avg;
+} ShinyTickData;
+
+typedef struct {
+	uint32_t cur;
+	float avg;
+} ShinyCountData;
+
+typedef struct {
+	ShinyCountData entryCount;
+	ShinyTickData selfTicks;
+	ShinyTickData childTicks;
+} ShinyData;
+
+SHINY_INLINE shinytick_t ShinyData_totalTicksCur(const ShinyData *self) {
+	return self->selfTicks.cur + self->childTicks.cur;
+}
+
+SHINY_INLINE float ShinyData_totalTicksAvg(const ShinyData *self) {
+	return self->selfTicks.avg + self->childTicks.avg;
+}
+
+SHINY_INLINE void ShinyData_computeAverage(ShinyData *self, float a_damping) {
+	self->entryCount.avg = self->entryCount.cur +
+		a_damping * (self->entryCount.avg - self->entryCount.cur);
+	self->selfTicks.avg = self->selfTicks.cur +
+		a_damping * (self->selfTicks.avg - self->selfTicks.cur);
+	self->childTicks.avg = self->childTicks.cur +
+		a_damping * (self->childTicks.avg - self->childTicks.cur);
+}
+
+SHINY_INLINE void ShinyData_copyAverage(ShinyData *self) {
+	self->entryCount.avg = (float) self->entryCount.cur;
+	self->selfTicks.avg = (float) self->selfTicks.cur;
+	self->childTicks.avg = (float) self->childTicks.cur;
+}
+
+SHINY_INLINE void ShinyData_clearAll(ShinyData *self) {
+	self->entryCount.cur = 0;
+	self->entryCount.avg = 0;
+	self->selfTicks.cur = 0;
+	self->selfTicks.avg = 0;
+	self->childTicks.cur = 0;
+	self->childTicks.avg = 0;
+}
+
+SHINY_INLINE void ShinyData_clearCurrent(ShinyData *self) {
+	self->entryCount.cur = 0;
+	self->selfTicks.cur = 0;
+	self->childTicks.cur = 0;
+}
+
+#if __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* SHINY_DATA_H */

deps_src/Shiny/ShinyMacros.h

@@ -0,0 +1,281 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_MACROS_H
+#define SHINY_MACROS_H
+
+#ifdef SLIC3R_PROFILE
+
+#include "ShinyManager.h"
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#define PROFILE_UPDATE()													\
+	ShinyManager_update(&Shiny_instance)
+
+#define PROFILE_SET_DAMPING(floatfrom0to1)									\
+	Shiny_instance.damping = (floatfrom0to1);
+
+#define PROFILE_GET_DAMPING()												\
+	(Shiny_instance.damping)
+
+#define PROFILE_OUTPUT(filename)											\
+	ShinyManager_output(&Shiny_instance, (filename))
+
+#define PROFILE_OUTPUT_STREAM(stream)										\
+	ShinyManager_outputToStream(&Shiny_instance, (stream))
+
+#ifdef __cplusplus
+#define PROFILE_GET_TREE_STRING()											\
+	ShinyManager_outputTreeToString(&Shiny_instance)
+
+#define PROFILE_GET_FLAT_STRING()											\
+	ShinyManager_outputFlatToString(&Shiny_instance)
+#endif /* __cplusplus */
+
+#define PROFILE_DESTROY()													\
+	ShinyManager_destroy(&Shiny_instance)
+
+#define PROFILE_CLEAR()														\
+	ShinyManager_clear(&Shiny_instance)
+
+#define PROFILE_SORT_ZONES()												\
+	ShinyManager_sortZones(&Shiny_instance)
+
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#define PROFILE_GET_TOTAL_TICKS_CUR()										\
+	ShinyData_totalTicksCur(&Shiny_instance.rootZone.data)
+
+#define PROFILE_GET_TOTAL_TICKS()											\
+	ShinyData_totalTicksAvg(&Shiny_instance.rootZone.data)
+
+#define PROFILE_GET_PROFILED_TICKS_CUR()									\
+	(Shiny_instance.rootZone.data.selfTicks.cur)
+
+#define PROFILE_GET_PROFILED_TICKS()										\
+	(Shiny_instance.rootZone.data.selfTicks.avg)
+
+#define PROFILE_GET_UNPROFILED_TICKS_CUR()									\
+	(Shiny_instance.rootZone.data.childTicks.cur)
+
+#define PROFILE_GET_UNPROFILED_TICKS()										\
+	(Shiny_instance.rootZone.data.childTicks.avg)
+
+#define PROFILE_GET_SHARED_TOTAL_TICKS_CUR(name)							\
+	ShinyData_totalTicksCur(&(_PROFILE_ID_ZONE_SHARED(name).data))
+
+#define PROFILE_GET_SHARED_TOTAL_TICKS(name)								\
+	ShinyData_totalTicksAvg(&(_PROFILE_ID_ZONE_SHARED(name).data))
+
+#define PROFILE_GET_SHARED_SELF_TICKS_CUR(name)								\
+	(_PROFILE_ID_ZONE_SHARED(name).data.selfTicks.cur)
+
+#define PROFILE_GET_SHARED_SELF_TICKS(name)									\
+	(_PROFILE_ID_ZONE_SHARED(name).data.selfTicks.avg)
+
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#define PROFILE_IS_SHARED_SELF_BELOW(name, floatfrom0to1)					\
+	ShinyManager_isZoneSelfTimeBelow(										\
+		&Shiny_instance, _PROFILE_ID_ZONE_SHARED(name), floatfrom0to1)
+
+#define PROFILE_IS_SHARED_TOTAL_BELOW(name, floatfrom0to1)					\
+	ShinyManager_isZoneTotalTimeBelow(										\
+		&Shiny_instance, _PROFILE_ID_ZONE_SHARED(name), floatfrom0to1)
+
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#define PROFILE_END()														\
+	ShinyManager_endCurNode(&Shiny_instance)
+
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#define PROFILE_BEGIN( name )												\
+																			\
+	static _PROFILE_ZONE_DEFINE(_PROFILE_ID_ZONE(name), #name);				\
+	_PROFILE_ZONE_BEGIN(_PROFILE_ID_ZONE(name))
+
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#ifdef __cplusplus
+#define PROFILE_BLOCK( name )												\
+																			\
+	_PROFILE_BLOCK_DEFINE(_PROFILE_ID_BLOCK());								\
+	PROFILE_BEGIN(name)
+#endif /* __cplusplus */
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#ifdef __cplusplus
+#define PROFILE_FUNC()														\
+																			\
+	_PROFILE_BLOCK_DEFINE(_PROFILE_ID_BLOCK());								\
+	static _PROFILE_ZONE_DEFINE(_PROFILE_ID_ZONE_FUNC(), __FUNCTION__);		\
+	_PROFILE_ZONE_BEGIN(_PROFILE_ID_ZONE_FUNC())
+#endif /* __cplusplus */
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#define PROFILE_CODE( code )												\
+																			\
+	do {																	\
+		static _PROFILE_ZONE_DEFINE(_PROFILE_ID_ZONE_CODE(), #code);		\
+		_PROFILE_ZONE_BEGIN(_PROFILE_ID_ZONE_CODE());						\
+		{ code; }															\
+		PROFILE_END();														\
+	} while(0)
+
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#define PROFILE_SHARED_EXTERN( name )										\
+																			\
+	_PROFILE_ZONE_DECLARE(extern, _PROFILE_ID_ZONE_SHARED(name))
+
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#define PROFILE_SHARED_DEFINE( name )										\
+																			\
+	_PROFILE_ZONE_DEFINE(_PROFILE_ID_ZONE_SHARED(name), #name)
+
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#define PROFILE_SHARED_BEGIN( name )										\
+																			\
+	_PROFILE_ZONE_BEGIN(_PROFILE_ID_ZONE_SHARED(name))
+
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#ifdef __cplusplus
+#define PROFILE_SHARED_BLOCK( name )										\
+																			\
+	_PROFILE_BLOCK_DEFINE(_PROFILE_ID_BLOCK());								\
+	_PROFILE_ZONE_BEGIN(_PROFILE_ID_ZONE_SHARED(name))
+#endif /* __cplusplus */
+
+
+/*---------------------------------------------------------------------------*/
+/* public preprocessors */
+
+#ifdef SHINY_HAS_ENABLED
+#define PROFILE_SET_ENABLED( boolean )										\
+	Shiny_instance.enabled = boolean
+#endif
+
+
+/*---------------------------------------------------------------------------*/
+/* internal preprocessors */
+
+#define _PROFILE_ID_ZONE( name )			__ShinyZone_##name
+#define _PROFILE_ID_ZONE_FUNC()				__ShinyZoneFunc
+#define _PROFILE_ID_ZONE_CODE()				__ShinyZoneCode
+#define _PROFILE_ID_ZONE_SHARED( name )		name##__ShinyZoneShared
+#define _PROFILE_ID_BLOCK()					__ShinyBlock
+
+
+/*---------------------------------------------------------------------------*/
+/* internal preprocessor */
+
+#define _PROFILE_ZONE_DEFINE( id, string )									\
+																			\
+	ShinyZone id = {														\
+		NULL, SHINY_ZONE_STATE_HIDDEN, string,								\
+		{ { 0, 0 }, { 0, 0 }, { 0, 0 } }									\
+	}
+
+
+/*---------------------------------------------------------------------------*/
+/* internal preprocessor */
+
+#define _PROFILE_ZONE_DECLARE( prefix, id )									\
+																			\
+	prefix ShinyZone id
+
+
+/*---------------------------------------------------------------------------*/
+/* internal preprocessor */
+
+#define _PROFILE_BLOCK_DEFINE( id )											\
+																			\
+	ShinyEndNodeOnDestruction SHINY_UNUSED id
+
+
+/*---------------------------------------------------------------------------*/
+/* internal preprocessor */
+
+#define _PROFILE_ZONE_BEGIN( id )											\
+																			\
+	do {																	\
+		static ShinyNodeCache cache = &_ShinyNode_dummy;					\
+		ShinyManager_lookupAndBeginNode(&Shiny_instance, &cache, &id);		\
+	} while(0)
+
+/*---------------------------------------------------------------------------*/
+
+#else /* SLIC3R_PROFILE */
+
+#define PROFILE_UPDATE()
+#define PROFILE_SET_DAMPING(x)
+#define PROFILE_GET_DAMPING()			0.0f
+#define PROFILE_OUTPUT(x)
+#define PROFILE_OUTPUT_STREAM(x)
+#define PROFILE_CLEAR()
+#define PROFILE_GET_TREE_STRING()		std::string()
+#define PROFILE_GET_FLAT_STRING()		std::string()
+#define PROFILE_DESTROY()
+#define PROFILE_BEGIN(name)
+#define PROFILE_BLOCK(name)
+#define PROFILE_FUNC()
+#define PROFILE_CODE(code)				do { code; } while (0)
+#define PROFILE_SHARED_GLOBAL(name)
+#define PROFILE_SHARED_MEMBER(name)
+#define PROFILE_SHARED_DEFINE(name)
+#define PROFILE_SHARED_BEGIN(name)
+#define PROFILE_SHARED_BLOCK(name)
+#define PROFILE_SET_ENABLED(boolean)
+
+#endif /* SLIC3R_PROFILE */
+
+#endif /* SHINY_MACROS_H */

deps_src/Shiny/ShinyManager.c

@@ -0,0 +1,445 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifdef SLIC3R_PROFILE
+
+#include "ShinyManager.h"
+
+#include <malloc.h>
+#include <memory.h>
+#include <string.h>
+#include <stdio.h>
+
+/*---------------------------------------------------------------------------*/
+
+#define TABLE_SIZE_INIT		256
+
+/*---------------------------------------------------------------------------*/
+
+ShinyManager Shiny_instance = {
+#if SHINY_HAS_ENABLED == TRUE
+	/* enabled = */ false,
+#endif
+	/* _lastTick = */ 0,
+	/* _curNode = */ &Shiny_instance.rootNode,
+	/* _tableMask = */ 0,
+	/* _nodeTable = */ _ShinyManager_dummyNodeTable,
+#if SHINY_LOOKUP_RATE == TRUE
+	/* _lookupCount = */ 0,
+	/* _lookupSuccessCount = */ 0,
+#endif
+	/* _tableSize = */ 1,
+	/* nodeCount = */ 1,
+	/* zoneCount = */ 1,
+	/* _lastZone = */ &Shiny_instance.rootZone,
+	/* _lastNodePool = */ NULL,
+	/* _firstNodePool = */ NULL,
+	/* rootNode = */ {
+		/* _last = */ { 0, 0 },
+		/* zone = */ &Shiny_instance.rootZone,
+		/* parent = */ &Shiny_instance.rootNode,
+		/* nextSibling = */ NULL,
+		/* firstChild = */ NULL,
+		/* lastChild = */ NULL,
+		/* childCount = */ 0,
+		/* entryLevel = */ 0,
+		/* _cache = */ NULL,
+		/* data = */ { { 0, 0 }, { 0, 0 }, { 0, 0 } }
+	},
+	/* rootZone = */ {
+		/* next = */ NULL,
+		/* _state = */ SHINY_ZONE_STATE_HIDDEN,
+		/* name = */ "<unprofiled>",
+		/* data = */ { { 0, 0 }, { 0, 0 }, { 0, 0 } }
+	},
+	/* damping = */ 0.f, // Damping disabled, every PROFILE_UPDATE will be performed from scratch. Original value: 0.9f
+	/* _initialized = */ FALSE,
+	/* _firstUpdate = */ TRUE
+};
+
+ShinyNode* _ShinyManager_dummyNodeTable[] = { NULL };
+
+
+/*---------------------------------------------------------------------------*/
+
+#if SHINY_COMPILER == SHINY_COMPILER_MSVC
+#	pragma warning (push)
+#	pragma warning (disable: 4311)
+#endif
+
+/* primary hash function */
+SHINY_INLINE uint32_t hash_value(void* a_pParent, void* a_pZone) {
+	uint32_t a = (uint32_t) a_pParent + (uint32_t) a_pZone;
+//	uint32_t a = *reinterpret_cast<uint32_t*>(&a_pParent) + *reinterpret_cast<uint32_t*>(&a_pZone);
+
+	a = (a+0x7ed55d16) + (a<<12);
+	a = (a^0xc761c23c) ^ (a>>19);
+	return a;
+}
+
+/*
+ * secondary hash used as index offset: force it to be odd
+ * so it's relatively prime to the power-of-two table size
+ */
+SHINY_INLINE uint32_t hash_offset(uint32_t a) {
+	return ((a << 8) + (a >> 4)) | 1;
+}
+
+#if SHINY_COMPILER == SHINY_COMPILER_MSVC
+#	pragma warning (pop)
+#endif
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyManager_preLoad(ShinyManager *self) {
+	if (!self->_initialized) {
+		_ShinyManager_init(self);
+
+		_ShinyManager_createNodeTable(self, TABLE_SIZE_INIT);
+		_ShinyManager_createNodePool(self, TABLE_SIZE_INIT / 2);
+	}
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyManager_update(ShinyManager *self) {
+#if SHINY_HAS_ENABLED == TRUE
+	if (!enabled) return;
+#endif
+
+	_ShinyManager_appendTicksToCurNode(self);
+	ShinyZone_preUpdateChain(&self->rootZone);
+
+	if (self->_firstUpdate || self->damping == 0) {
+		self->_firstUpdate = FALSE;
+		ShinyNode_updateTreeClean(&self->rootNode);
+		ShinyZone_updateChainClean(&self->rootZone);
+
+	} else {
+		ShinyNode_updateTree(&self->rootNode, self->damping);
+		ShinyZone_updateChain(&self->rootZone, self->damping);
+	}
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyManager_updateClean(ShinyManager *self) {
+#if SHINY_HAS_ENABLED == TRUE
+	if (!enabled) return;
+#endif
+
+	_ShinyManager_appendTicksToCurNode(self);
+	ShinyZone_preUpdateChain(&self->rootZone);
+
+	self->_firstUpdate = FALSE;
+	ShinyNode_updateTreeClean(&self->rootNode);
+	ShinyZone_updateChainClean(&self->rootZone);
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyManager_clear(ShinyManager *self) {
+	ShinyManager_destroy(self);
+	ShinyManager_preLoad(self);
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyManager_destroy(ShinyManager *self) {
+	ShinyManager_destroyNodes(self);
+	ShinyManager_resetZones(self);
+	_ShinyManager_uninit(self);
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+ShinyNode* _ShinyManager_lookupNode(ShinyManager *self, ShinyNodeCache *a_cache, ShinyZone *a_zone) {
+	uint32_t nHash = hash_value(self->_curNode, a_zone);
+	uint32_t nIndex = nHash & self->_tableMask;
+	ShinyNode* pNode = self->_nodeTable[nIndex];
+
+	_ShinyManager_incLookup(self);
+	_ShinyManager_incLookupSuccess(self);
+
+	if (pNode) {
+		uint32_t nStep;
+
+		if (ShinyNode_isEqual(pNode, self->_curNode, a_zone)) return pNode; /* found it! */
+		
+		/* hash collision: */
+
+		/* compute a secondary hash function for stepping */
+		nStep = hash_offset(nHash);
+
+		for (;;) {
+			_ShinyManager_incLookup(self);
+
+			nIndex = (nIndex + nStep) & self->_tableMask;
+			pNode = self->_nodeTable[nIndex];
+
+			if (!pNode) break; /* found empty slot */
+			else if (ShinyNode_isEqual(pNode, self->_curNode, a_zone)) return pNode; /* found it! */
+		}
+
+		/* loop is guaranteed to end because the hash table is never full */
+	}
+
+	if (a_zone->_state == SHINY_ZONE_STATE_HIDDEN) { /* zone is not initialized */
+		ShinyZone_init(a_zone, self->_lastZone);
+
+		self->_lastZone = a_zone;
+		self->zoneCount++;
+
+		if (self->_initialized == FALSE) { /* first time init */
+			_ShinyManager_init(self);
+
+			_ShinyManager_createNodeTable(self, TABLE_SIZE_INIT);
+			_ShinyManager_createNodePool(self, TABLE_SIZE_INIT / 2);
+
+			/* initialization has invalidated nIndex
+			 * we must compute nIndex again
+			 */
+			return _ShinyManager_createNode(self, a_cache, a_zone);
+		}
+	}
+
+	/* Althouth nodeCount is not updated
+	 * it includes rootNode so it adds up.
+	 *
+	 * check if we need to grow the table
+	 * we keep it at most 1/2 full to be very fast
+	 */
+	if (self->_tableSize < 2 * self->nodeCount) {
+
+		_ShinyManager_resizeNodeTable(self, 2 * self->_tableSize);
+		_ShinyManager_resizeNodePool(self, self->nodeCount - 1);
+
+		/* resize has invalidated nIndex
+		 * we must compute nIndex again
+		 */
+		return _ShinyManager_createNode(self, a_cache, a_zone);
+	}
+	
+	self->nodeCount++;
+
+	{
+		ShinyNode* pNewNode = ShinyNodePool_newItem(self->_lastNodePool);
+		ShinyNode_init(pNewNode, self->_curNode, a_zone, a_cache);
+
+		self->_nodeTable[nIndex] = pNewNode;
+		return pNewNode;
+	}
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void _ShinyManager_insertNode(ShinyManager *self, ShinyNode* a_pNode) {
+	uint32_t nHash = hash_value(a_pNode->parent, a_pNode->zone);
+	uint32_t nIndex = nHash & self->_tableMask;
+
+	if (self->_nodeTable[nIndex]) {
+		uint32_t nStep = hash_offset(nHash);
+
+		while (self->_nodeTable[nIndex])
+			nIndex = (nIndex + nStep) & self->_tableMask;
+	}
+
+	self->_nodeTable[nIndex] = a_pNode;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+ShinyNode* _ShinyManager_createNode(ShinyManager *self, ShinyNodeCache* a_cache, ShinyZone* a_pZone) {
+	ShinyNode* pNewNode = ShinyNodePool_newItem(self->_lastNodePool);
+	ShinyNode_init(pNewNode, self->_curNode, a_pZone, a_cache);
+
+	self->nodeCount++;
+	_ShinyManager_insertNode(self, pNewNode);
+	return pNewNode;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void _ShinyManager_createNodePool(ShinyManager *self, uint32_t a_nCount) {
+	self->_firstNodePool = ShinyNodePool_create(a_nCount);
+	self->_lastNodePool = self->_firstNodePool;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void _ShinyManager_resizeNodePool(ShinyManager *self, uint32_t a_nCount) {
+	ShinyNodePool* pPool = ShinyNodePool_create(a_nCount);
+	self->_lastNodePool->nextPool = pPool;
+	self->_lastNodePool = pPool;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void _ShinyManager_createNodeTable(ShinyManager *self, uint32_t a_nCount) {
+	self->_tableSize = a_nCount;
+	self->_tableMask = a_nCount - 1;
+
+	self->_nodeTable = (ShinyNodeTable*)
+		malloc(sizeof(ShinyNode) * a_nCount);
+
+	memset(self->_nodeTable, 0, a_nCount * sizeof(ShinyNode*));
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void _ShinyManager_resizeNodeTable(ShinyManager *self, uint32_t a_nCount) {
+	ShinyNodePool* pPool;
+
+	free(self->_nodeTable);
+	_ShinyManager_createNodeTable(self, a_nCount);
+
+	pPool = self->_firstNodePool;
+	while (pPool) {
+
+		ShinyNode *pIter = ShinyNodePool_firstItem(pPool);
+
+		while (pIter != pPool->_nextItem)
+			_ShinyManager_insertNode(self, pIter++);
+
+		pPool = pPool->nextPool;
+	}
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyManager_resetZones(ShinyManager *self) {
+	ShinyZone_resetChain(&self->rootZone);
+	self->_lastZone = &self->rootZone;
+	self->zoneCount = 1;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyManager_destroyNodes(ShinyManager *self) {
+	if (self->_firstNodePool) {
+		ShinyNodePool_destroy(self->_firstNodePool);
+		self->_firstNodePool = NULL;
+	}
+
+	if (self->_nodeTable != _ShinyManager_dummyNodeTable) {
+		free(self->_nodeTable);
+
+		self->_nodeTable = _ShinyManager_dummyNodeTable;
+		self->_tableSize = 1;
+		self->_tableMask = 0;
+	}
+
+	self->_curNode = &self->rootNode;
+	self->nodeCount = 1;
+
+	_ShinyManager_init(self);
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+const char* ShinyManager_getOutputErrorString(ShinyManager *self) {
+	if (self->_firstUpdate) return "!!! Profile data must first be updated !!!";
+	else if (!self->_initialized) return "!!! No profiles where executed !!!";
+	else return NULL;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+#if SHINY_COMPILER == SHINY_COMPILER_MSVC
+#	pragma warning (push)
+#	pragma warning (disable: 4996)
+#endif
+
+int ShinyManager_output(ShinyManager *self, const char *a_filename) {
+	if (!a_filename) {
+		ShinyManager_outputToStream(self, stdout);
+
+	} else {
+		FILE *file = fopen(a_filename, "w");
+		if (!file) return FALSE;
+		ShinyManager_outputToStream(self, file);
+		fclose(file);
+	}
+
+	return TRUE;
+}
+
+#if SHINY_COMPILER == SHINY_COMPILER_MSVC
+#	pragma warning (pop)
+#endif
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyManager_outputToStream(ShinyManager *self, FILE *a_stream) {
+	const char *error = ShinyManager_getOutputErrorString(self);
+
+	if (error) {
+		fwrite(error, 1, strlen(error), a_stream);
+		fwrite("\n\n", 1, 2, a_stream);
+		return;
+	}
+
+#if SHINY_OUTPUT_MODE & SHINY_OUTPUT_MODE_FLAT
+	ShinyManager_sortZones(self);
+
+	{
+		int size = ShinyPrintZonesSize(self->zoneCount);
+		char *buffer = (char*) malloc(size);
+		ShinyPrintZones(buffer, &self->rootZone);
+		fwrite(buffer, 1, size - 1, a_stream);
+		fwrite("\n\n", 1, 2, a_stream);
+		free(buffer);
+	}
+#endif
+
+#if SHINY_OUTPUT_MODE & SHINY_OUTPUT_MODE_TREE
+	{
+		int size = ShinyPrintNodesSize(self->nodeCount);
+		char *buffer = (char*) malloc(size);
+		ShinyPrintNodes(buffer, &self->rootNode);
+		fwrite(buffer, 1, size - 1, a_stream);
+		fwrite("\n\n", 1, 2, a_stream);
+		free(buffer);
+	}
+#endif
+}
+
+#endif /* SLIC3R_PROFILE */

deps_src/Shiny/ShinyManager.h

@@ -0,0 +1,263 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_MANAGER_H
+#define SHINY_MANAGER_H
+
+#include "ShinyZone.h"
+#include "ShinyNode.h"
+#include "ShinyNodePool.h"
+#include "ShinyTools.h"
+#include "ShinyOutput.h"
+
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+typedef struct {
+#ifdef SHINY_HAS_ENABLED
+	bool enabled;
+#endif
+
+	shinytick_t _lastTick;
+
+	ShinyNode* _curNode;
+
+	uint32_t _tableMask; /* = _tableSize - 1 */
+
+	ShinyNodeTable* _nodeTable;
+
+#ifdef SHINY_LOOKUP_RATE
+	uint64_t _lookupCount;
+	uint64_t _lookupSuccessCount;
+#endif
+
+	uint32_t _tableSize;
+
+	uint32_t nodeCount;
+	uint32_t zoneCount;
+
+	ShinyZone* _lastZone;
+
+	ShinyNodePool* _lastNodePool;
+	ShinyNodePool* _firstNodePool;
+
+	ShinyNode rootNode;
+	ShinyZone rootZone;
+
+	float damping;
+
+	int _initialized;
+	int _firstUpdate;
+} ShinyManager;
+
+
+/*---------------------------------------------------------------------------*/
+
+extern ShinyNode* _ShinyManager_dummyNodeTable[];
+
+extern ShinyManager Shiny_instance;
+
+
+/*---------------------------------------------------------------------------*/
+
+SHINY_INLINE void _ShinyManager_appendTicksToCurNode(ShinyManager *self) {
+	shinytick_t curTick;
+	ShinyGetTicks(&curTick);
+
+	ShinyNode_appendTicks(self->_curNode, curTick - self->_lastTick);
+	self->_lastTick = curTick;
+}
+
+SHINY_API ShinyNode* _ShinyManager_lookupNode(ShinyManager *self, ShinyNodeCache* a_cache, ShinyZone* a_zone);
+
+SHINY_API void _ShinyManager_createNodeTable(ShinyManager *self, uint32_t a_count);
+SHINY_API void _ShinyManager_resizeNodeTable(ShinyManager *self, uint32_t a_count);
+
+SHINY_API void _ShinyManager_createNodePool(ShinyManager *self, uint32_t a_count);
+SHINY_API void _ShinyManager_resizeNodePool(ShinyManager *self, uint32_t a_count);
+
+SHINY_API ShinyNode* _ShinyManager_createNode(ShinyManager *self, ShinyNodeCache* a_cache, ShinyZone* a_pZone);
+SHINY_API void _ShinyManager_insertNode(ShinyManager *self, ShinyNode* a_pNode);
+
+SHINY_INLINE void _ShinyManager_init(ShinyManager *self) {
+	self->_initialized = TRUE;
+
+	self->rootNode._last.entryCount = 1;
+	self->rootNode._last.selfTicks = 0;
+	ShinyGetTicks(&self->_lastTick);
+}
+
+SHINY_INLINE void _ShinyManager_uninit(ShinyManager *self) {
+	self->_initialized = FALSE;
+
+	ShinyNode_clear(&self->rootNode);
+	self->rootNode.parent = &self->rootNode;
+	self->rootNode.zone = &self->rootZone;
+}
+
+#ifdef SHINY_LOOKUP_RATE
+SHINY_INLINE void _ShinyManager_incLookup(ShinyManager *self) { self->_lookupCount++; }
+SHINY_INLINE void _ShinyManager_incLookupSuccess(ShinyManager *self) { self->_lookupSuccessCount++; }
+SHINY_INLINE float ShinyManager_lookupRate(const ShinyManager *self) { return ((float) self->_lookupSuccessCount) / ((float) self->_lookupCount); }
+
+#else
+SHINY_INLINE void _ShinyManager_incLookup(ShinyManager * self) { self = self; }
+SHINY_INLINE void _ShinyManager_incLookupSuccess(ShinyManager *  self) { self = self; }
+SHINY_INLINE float ShinyManager_lookupRate(const ShinyManager *  self) { self = self; return -1; }
+#endif
+
+SHINY_API void ShinyManager_resetZones(ShinyManager *self);
+SHINY_API void ShinyManager_destroyNodes(ShinyManager *self);
+
+SHINY_INLINE float ShinyManager_tableUsage(const ShinyManager *self)  {
+	return ((float) self->nodeCount) / ((float) self->_tableSize);
+}
+
+SHINY_INLINE uint32_t ShinyManager_allocMemInBytes(const ShinyManager *self) {
+	return self->_tableSize * sizeof(ShinyNode*)
+		 + (self->_firstNodePool)? ShinyNodePool_memoryUsageChain(self->_firstNodePool) : 0;
+}
+
+SHINY_INLINE void ShinyManager_beginNode(ShinyManager *self, ShinyNode* a_node) {
+	ShinyNode_beginEntry(a_node);
+
+	_ShinyManager_appendTicksToCurNode(self);
+	self->_curNode = a_node;
+}
+
+SHINY_INLINE void ShinyManager_lookupAndBeginNode(ShinyManager *self, ShinyNodeCache* a_cache, ShinyZone* a_zone) {
+#ifdef SHINY_HAS_ENABLED
+	if (!self->enabled) return;
+#endif
+
+	if (self->_curNode != (*a_cache)->parent)
+		*a_cache = _ShinyManager_lookupNode(self, a_cache, a_zone);
+
+	ShinyManager_beginNode(self, *a_cache);
+}
+
+SHINY_INLINE void ShinyManager_endCurNode(ShinyManager *self) {
+#ifdef SHINY_HAS_ENABLED
+	if (!self->enabled) return;
+#endif
+
+	_ShinyManager_appendTicksToCurNode(self);
+	self->_curNode = self->_curNode->parent;
+}
+
+/**/
+
+SHINY_API void ShinyManager_preLoad(ShinyManager *self);
+
+SHINY_API void ShinyManager_updateClean(ShinyManager *self);
+SHINY_API void ShinyManager_update(ShinyManager *self);
+
+SHINY_API void ShinyManager_clear(ShinyManager *self);
+SHINY_API void ShinyManager_destroy(ShinyManager *self);
+
+SHINY_INLINE void ShinyManager_sortZones(ShinyManager *self) {
+	if (self->rootZone.next)
+		self->_lastZone = ShinyZone_sortChain(&self->rootZone.next);
+}
+
+SHINY_API const char* ShinyManager_getOutputErrorString(ShinyManager *self);
+
+SHINY_API int ShinyManager_output(ShinyManager *self, const char *a_filename);
+SHINY_API void ShinyManager_outputToStream(ShinyManager *self, FILE *stream);
+
+#if __cplusplus
+} /* end of extern "C" */
+
+SHINY_INLINE std::string ShinyManager_outputTreeToString(ShinyManager *self) {
+	const char* error = ShinyManager_getOutputErrorString(self);
+	if (error) return error;
+	else return ShinyNodesToString(&self->rootNode, self->nodeCount);
+}
+
+SHINY_INLINE std::string ShinyManager_outputFlatToString(ShinyManager *self) {
+	const char* error = ShinyManager_getOutputErrorString(self);
+	if (error) return error;
+
+	ShinyManager_sortZones(self);
+	return ShinyZonesToString(&self->rootZone, self->zoneCount);
+}
+
+extern "C" { /* end of c++ */
+#endif
+
+SHINY_INLINE int ShinyManager_isZoneSelfTimeBelow(ShinyManager *self, ShinyZone* a_zone, float a_percentage) {
+	return a_percentage * (float) self->rootZone.data.childTicks.cur
+		<= (float) a_zone->data.selfTicks.cur; 
+}
+
+SHINY_INLINE int ShinyManager_isZoneTotalTimeBelow(ShinyManager *self, ShinyZone* a_zone, float a_percentage) {
+	return a_percentage * (float) self->rootZone.data.childTicks.cur
+		<= (float) ShinyData_totalTicksCur(&a_zone->data); 
+}
+
+/**/
+
+SHINY_INLINE void ShinyManager_enumerateNodes(ShinyManager *self, void (*a_func)(const ShinyNode*)) {
+	ShinyNode_enumerateNodes(&self->rootNode, a_func);
+}
+
+SHINY_INLINE void ShinyManager_enumerateZones(ShinyManager *self, void (*a_func)(const ShinyZone*)) {
+	ShinyZone_enumerateZones(&self->rootZone, a_func);
+}
+
+#if __cplusplus
+} /* end of extern "C" */
+
+template <class T> void ShinyManager_enumerateNodes(ShinyManager *self, T* a_this, void (T::*a_func)(const ShinyNode*)) {
+	ShinyNode_enumerateNodes(&self->rootNode, a_this, a_func);
+}
+
+template <class T> void ShinyManager_enumerateZones(ShinyManager *self, T* a_this, void (T::*a_func)(const ShinyZone*)) {
+	ShinyZone_enumerateZones(&self->rootZone, a_this, a_func);
+}
+
+extern "C" { /* end of c++ */
+#endif
+
+
+/*---------------------------------------------------------------------------*/
+
+#if __cplusplus
+} /* end of extern "C" */
+
+class ShinyEndNodeOnDestruction {
+public:
+
+	SHINY_INLINE ~ShinyEndNodeOnDestruction() {
+		ShinyManager_endCurNode(&Shiny_instance);
+	}
+};
+#endif
+
+#endif /* SHINY_MANAGER_H */

deps_src/Shiny/ShinyNode.c

@@ -0,0 +1,129 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifdef SLIC3R_PROFILE
+
+#include "ShinyNode.h"
+#include "ShinyZone.h"
+#include "ShinyNodeState.h"
+
+#include <memory.h>
+
+/*---------------------------------------------------------------------------*/
+
+ShinyNode _ShinyNode_dummy = {
+	/* _last = */ { 0, 0 },
+	/* zone = */ NULL,
+	/* parent = */ NULL,
+	/* nextSibling = */ NULL,
+	/* firstChild = */ NULL,
+	/* lastChild = */ NULL
+};
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyNode_updateTree(ShinyNode* first, float a_damping) {
+	ShinyNodeState *top = NULL;
+	ShinyNode *node = first;
+
+	for (;;) {
+		do {
+			top = ShinyNodeState_push(top, node);
+			node = node->firstChild;
+		} while (node);
+
+		for (;;) {
+			node = ShinyNodeState_finishAndGetNext(top, a_damping);
+			top = ShinyNodeState_pop(top);
+
+			if (node) break;
+			else if (!top) return;
+		}
+	}
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyNode_updateTreeClean(ShinyNode* first) {
+	ShinyNodeState *top = NULL;
+	ShinyNode *node = first;
+
+	for (;;) {
+		do {
+			top = ShinyNodeState_push(top, node);
+			node = node->firstChild;
+		} while (node);
+
+		for (;;) {
+			node = ShinyNodeState_finishAndGetNextClean(top);
+			top = ShinyNodeState_pop(top);
+
+			if (node) break;
+			else if (!top) return;
+		}
+	}
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+const ShinyNode* ShinyNode_findNextInTree(const ShinyNode* self) {
+	if (self->firstChild) {
+		return self->firstChild;
+
+	} else if (self->nextSibling) {
+		return self->nextSibling;
+
+	} else {
+		ShinyNode* pParent = self->parent;
+
+		while (!ShinyNode_isRoot(pParent)) {
+			if (pParent->nextSibling) return pParent->nextSibling;
+			else pParent = pParent->parent;
+		}
+
+		return NULL;
+	}
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyNode_clear(ShinyNode* self) {
+	memset(self, 0, sizeof(ShinyNode));
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyNode_enumerateNodes(const ShinyNode* a_node, void (*a_func)(const ShinyNode*)) {
+	a_func(a_node);
+
+	if (a_node->firstChild) ShinyNode_enumerateNodes(a_node->firstChild, a_func);
+	if (a_node->nextSibling) ShinyNode_enumerateNodes(a_node->nextSibling, a_func);
+}
+
+#endif /* SLIC3R_PROFILE */

deps_src/Shiny/ShinyNode.h

@@ -0,0 +1,133 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_NODE_H
+#define SHINY_NODE_H
+
+#include "ShinyData.h"
+#include "ShinyTools.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+typedef struct _ShinyNode {
+
+	ShinyLastData _last;
+
+	struct _ShinyZone* zone;
+	struct _ShinyNode* parent;
+	struct _ShinyNode* nextSibling;
+
+	struct _ShinyNode* firstChild;
+	struct _ShinyNode* lastChild;
+
+	uint32_t childCount;
+	uint32_t entryLevel;
+
+	ShinyNodeCache* _cache;
+
+	ShinyData data;
+
+} ShinyNode;
+
+
+/*---------------------------------------------------------------------------*/
+
+extern ShinyNode _ShinyNode_dummy;
+
+
+/*---------------------------------------------------------------------------*/
+
+SHINY_INLINE void ShinyNode_addChild(ShinyNode* self,  ShinyNode* a_child) {
+	if (self->childCount++) {
+		self->lastChild->nextSibling = a_child;
+		self->lastChild = a_child;
+
+	} else {
+		self->lastChild = a_child;
+		self->firstChild = a_child;
+	}
+}
+
+SHINY_INLINE void ShinyNode_init(ShinyNode* self, ShinyNode* a_parent, struct _ShinyZone* a_zone, ShinyNodeCache* a_cache) {
+	/* NOTE: all member variables are assumed to be zero when allocated */
+
+	self->zone = a_zone;
+	self->parent = a_parent;
+
+	self->entryLevel = a_parent->entryLevel + 1;
+	ShinyNode_addChild(a_parent, self);
+
+	self->_cache = a_cache;
+}
+
+SHINY_API void ShinyNode_updateTree(ShinyNode* self, float a_damping);
+SHINY_API void ShinyNode_updateTreeClean(ShinyNode* self);
+
+SHINY_INLINE void ShinyNode_destroy(ShinyNode* self) {
+	*(self->_cache) = &_ShinyNode_dummy;
+}
+
+SHINY_INLINE void ShinyNode_appendTicks(ShinyNode* self, shinytick_t a_elapsedTicks) {
+	self->_last.selfTicks += a_elapsedTicks;
+}
+
+SHINY_INLINE void ShinyNode_beginEntry(ShinyNode* self) {
+	self->_last.entryCount++;
+}
+
+SHINY_INLINE int ShinyNode_isRoot(ShinyNode* self) {
+	return (self->entryLevel == 0);
+}
+
+SHINY_INLINE int ShinyNode_isDummy(ShinyNode* self) {
+	return (self == &_ShinyNode_dummy);
+}
+
+SHINY_INLINE int ShinyNode_isEqual(ShinyNode* self, const ShinyNode* a_parent, const struct _ShinyZone* a_zone) {
+	return (self->parent == a_parent && self->zone == a_zone);
+}
+
+SHINY_API const ShinyNode* ShinyNode_findNextInTree(const ShinyNode* self);
+
+SHINY_API void ShinyNode_clear(ShinyNode* self);
+
+SHINY_API void ShinyNode_enumerateNodes(const ShinyNode* a_node, void (*a_func)(const ShinyNode*));
+
+#if __cplusplus
+} /* end of extern "C" */
+
+template <class T>
+void ShinyNode_enumerateNodes(const ShinyNode* a_node, T* a_this, void (T::*a_func)(const ShinyNode*)) {
+	(a_this->*a_func)(a_node);
+
+	if (a_node->firstChild) ShinyNode_enumerateNodes(a_node->firstChild, a_this, a_func);
+	if (a_node->nextSibling) ShinyNode_enumerateNodes(a_node->nextSibling, a_this, a_func);
+}
+#endif /* __cplusplus */
+
+#endif /* SHINY_NODE_H */

deps_src/Shiny/ShinyNodePool.c

@@ -0,0 +1,77 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifdef SLIC3R_PROFILE
+
+#include "ShinyNodePool.h"
+#include "ShinyTools.h"
+
+#include <memory.h>
+#include <malloc.h>
+
+/*---------------------------------------------------------------------------*/
+
+ShinyNodePool* ShinyNodePool_create(uint32_t a_items) {
+	ShinyNodePool* pPool = (ShinyNodePool*)
+		malloc(sizeof(ShinyNodePool) + sizeof(ShinyNode) * (a_items - 1));
+
+	pPool->nextPool = NULL;
+	pPool->_nextItem = &pPool->_items[0];
+	pPool->endOfItems = &pPool->_items[a_items];
+
+	memset(&pPool->_items[0], 0, a_items * sizeof(ShinyNode));
+	return pPool;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+uint32_t ShinyNodePool_memoryUsageChain(ShinyNodePool *first) {
+	uint32_t bytes = (uint32_t) ((char*) first->endOfItems - (char*) first);
+	ShinyNodePool *pool = first->nextPool;
+
+	while (pool) {
+		bytes += (uint32_t) ((char*) pool->endOfItems - (char*) pool);
+		pool = pool->nextPool;
+	}
+
+	return bytes;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyNodePool_destroy(ShinyNodePool *self) {
+	ShinyNode* firstNode = ShinyNodePool_firstItem(self);
+	ShinyNode* lastNode = self->_nextItem;
+
+	while (firstNode != lastNode)
+		ShinyNode_destroy(firstNode++);
+
+	/* TODO: make this into a loop or a tail recursion */
+	if (self->nextPool) ShinyNodePool_destroy(self->nextPool);
+	free(self);
+}
+
+#endif /* SLIC3R_PROFILE */

deps_src/Shiny/ShinyNodePool.h

@@ -0,0 +1,67 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_NODE_POOL_H
+#define SHINY_NODE_POOL_H
+
+#include "ShinyNode.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+typedef struct _ShinyNodePool {
+
+	struct _ShinyNodePool* nextPool;
+
+	ShinyNode *_nextItem;
+	ShinyNode *endOfItems;
+
+	ShinyNode _items[1];
+
+} ShinyNodePool;
+
+
+/*---------------------------------------------------------------------------*/
+
+SHINY_INLINE ShinyNode* ShinyNodePool_firstItem(ShinyNodePool *self) {
+	return &(self->_items[0]);
+}
+
+SHINY_INLINE ShinyNode* ShinyNodePool_newItem(ShinyNodePool *self) {
+	return self->_nextItem++;
+}
+
+ShinyNodePool* ShinyNodePool_create(uint32_t a_items);
+void ShinyNodePool_destroy(ShinyNodePool *self);
+
+uint32_t ShinyNodePool_memoryUsageChain(ShinyNodePool *first);
+
+#if __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* SHINY_NODE_POOL_H */

deps_src/Shiny/ShinyNodeState.c

@@ -0,0 +1,108 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifdef SLIC3R_PROFILE
+
+#include "ShinyNodeState.h"
+#include "ShinyNode.h"
+#include "ShinyZone.h"
+
+#include <malloc.h>
+
+/*---------------------------------------------------------------------------*/
+
+ShinyNodeState* ShinyNodeState_push(ShinyNodeState *a_top, ShinyNode *a_node) {
+	ShinyZone *zone = a_node->zone;
+	ShinyNodeState *self = (ShinyNodeState*) malloc(sizeof(ShinyNodeState));
+	self->node = a_node;
+	self->_prev = a_top;
+
+	a_node->data.selfTicks.cur = a_node->_last.selfTicks;
+	a_node->data.entryCount.cur = a_node->_last.entryCount;
+
+	zone->data.selfTicks.cur += a_node->_last.selfTicks;
+	zone->data.entryCount.cur += a_node->_last.entryCount;
+	
+	a_node->data.childTicks.cur = 0;
+	a_node->_last.selfTicks = 0;
+	a_node->_last.entryCount = 0;
+
+	self->zoneUpdating = zone->_state != SHINY_ZONE_STATE_UPDATING;
+	if (self->zoneUpdating) {
+		zone->_state = SHINY_ZONE_STATE_UPDATING;
+	} else {
+		zone->data.childTicks.cur -= a_node->data.selfTicks.cur;
+	}
+
+	return self;
+}
+
+/*---------------------------------------------------------------------------*/
+
+ShinyNodeState* ShinyNodeState_pop(ShinyNodeState *a_top) {
+	ShinyNodeState *prev = a_top->_prev;
+	free(a_top);
+	return prev;
+}
+
+/*---------------------------------------------------------------------------*/
+
+ShinyNode* ShinyNodeState_finishAndGetNext(ShinyNodeState *self, float a_damping) {
+	ShinyNode *node = self->node;
+	ShinyZone *zone = node->zone;
+
+	if (self->zoneUpdating) {					
+		zone->data.childTicks.cur += node->data.childTicks.cur;
+		zone->_state = SHINY_ZONE_STATE_INITIALIZED;
+	}
+
+	ShinyData_computeAverage(&node->data, a_damping);
+
+	if (!ShinyNode_isRoot(node))
+		node->parent->data.childTicks.cur += node->data.selfTicks.cur + node->data.childTicks.cur;
+
+	return node->nextSibling;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+ShinyNode* ShinyNodeState_finishAndGetNextClean(ShinyNodeState *self) {
+	ShinyNode *node = self->node;
+	ShinyZone *zone = node->zone;
+
+	if (self->zoneUpdating) {					
+		zone->data.childTicks.cur += node->data.childTicks.cur;
+		zone->_state = SHINY_ZONE_STATE_INITIALIZED;
+	}
+
+	ShinyData_copyAverage(&node->data);
+
+	if (!ShinyNode_isRoot(node))
+		node->parent->data.childTicks.cur += node->data.selfTicks.cur + node->data.childTicks.cur;
+
+	return node->nextSibling;
+}
+
+#endif /* SLIC3R_PROFILE */

deps_src/Shiny/ShinyNodeState.h

@@ -0,0 +1,56 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_NODE_STATE_H
+#define SHINY_NODE_STATE_H
+
+#include "ShinyNode.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+typedef struct _ShinyNodeState {
+	ShinyNode *node;
+	int zoneUpdating;
+
+	struct _ShinyNodeState *_prev;
+} ShinyNodeState;
+
+
+/*---------------------------------------------------------------------------*/
+
+ShinyNodeState* ShinyNodeState_push(ShinyNodeState *a_top, ShinyNode *a_node);
+ShinyNodeState* ShinyNodeState_pop(ShinyNodeState *a_top);
+
+ShinyNode* ShinyNodeState_finishAndGetNext(ShinyNodeState *self, float a_damping);
+ShinyNode* ShinyNodeState_finishAndGetNextClean(ShinyNodeState *self);
+
+#if __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* SHINY_NODE_STATE_H */

deps_src/Shiny/ShinyOutput.c

@@ -0,0 +1,189 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifdef SLIC3R_PROFILE
+
+#include "ShinyOutput.h"
+
+#include <stdio.h>
+
+#if SHINY_COMPILER == SHINY_COMPILER_MSVC
+#	pragma warning(disable: 4996)
+#	define snprintf		_snprintf
+#	define TRAILING		0
+
+#else
+#	define TRAILING		1
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+#define OUTPUT_WIDTH_CALL	6
+#define OUTPUT_WIDTH_TIME	(6+3)
+#define OUTPUT_WIDTH_PERC	(4+3)
+#define OUTPUT_WIDTH_SUM	120 
+
+#define OUTPUT_WIDTH_DATA	(1+OUTPUT_WIDTH_CALL + 1 + 2*(OUTPUT_WIDTH_TIME+4+OUTPUT_WIDTH_PERC+1) + 1)
+#define OUTPUT_WIDTH_NAME	(OUTPUT_WIDTH_SUM - OUTPUT_WIDTH_DATA)
+
+
+/*---------------------------------------------------------------------------*/
+
+SHINY_INLINE char* printHeader(char *output, const char *a_title) {
+	snprintf(output, OUTPUT_WIDTH_SUM + TRAILING,
+		"%-*s %*s %*s %*s",
+		OUTPUT_WIDTH_NAME, a_title,
+		OUTPUT_WIDTH_CALL, "calls",
+		OUTPUT_WIDTH_TIME+4+OUTPUT_WIDTH_PERC+1, "self time",
+		OUTPUT_WIDTH_TIME+4+OUTPUT_WIDTH_PERC+1, "total time");
+
+	return output + OUTPUT_WIDTH_SUM;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+SHINY_INLINE char* printData(char *output, const ShinyData *a_data, float a_topercent) {
+	float totalTicksAvg = ShinyData_totalTicksAvg(a_data);
+	const ShinyTimeUnit *selfUnit = ShinyGetTimeUnit(a_data->selfTicks.avg);
+	const ShinyTimeUnit *totalUnit = ShinyGetTimeUnit(totalTicksAvg);
+
+	snprintf(output, OUTPUT_WIDTH_DATA + TRAILING,
+		" %*.1f %*.2f %-2s %*.2f%% %*.2f %-2s %*.2f%%",
+		OUTPUT_WIDTH_CALL, a_data->entryCount.avg,
+		OUTPUT_WIDTH_TIME, a_data->selfTicks.avg * selfUnit->invTickFreq, selfUnit->suffix,
+		OUTPUT_WIDTH_PERC, a_data->selfTicks.avg * a_topercent,
+		OUTPUT_WIDTH_TIME, totalTicksAvg * totalUnit->invTickFreq, totalUnit->suffix,
+		OUTPUT_WIDTH_PERC, totalTicksAvg * a_topercent);
+
+	return output + OUTPUT_WIDTH_DATA;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+SHINY_INLINE char* printNode(char* output, const ShinyNode *a_node, float a_topercent) {
+	int offset = a_node->entryLevel * 2;
+
+	snprintf(output, OUTPUT_WIDTH_NAME + TRAILING, "%*s%-*s",
+		offset, "", OUTPUT_WIDTH_NAME - offset, a_node->zone->name);
+
+	output += OUTPUT_WIDTH_NAME;
+
+	output = printData(output, &a_node->data, a_topercent);
+	return output;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+SHINY_INLINE char* printZone(char* output, const ShinyZone *a_zone, float a_topercent) {
+	snprintf(output, OUTPUT_WIDTH_NAME + TRAILING, "%-*s",
+		OUTPUT_WIDTH_NAME, a_zone->name);
+
+	output += OUTPUT_WIDTH_NAME;
+
+	output = printData(output, &a_zone->data, a_topercent);
+	return output;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+int ShinyPrintNodesSize(uint32_t a_count) {
+	return (1 + a_count) * (OUTPUT_WIDTH_SUM + 1);
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+int ShinyPrintZonesSize(uint32_t a_count) {
+	return (1 + a_count) * (OUTPUT_WIDTH_SUM + 1);
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyPrintANode(char* output, const ShinyNode *a_node, const ShinyNode *a_root) {
+	float fTicksToPc = 100.0f / a_root->data.childTicks.avg;
+	output = printNode(output, a_node, fTicksToPc);
+	(*output++) = '\0';
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyPrintAZone(char* output, const ShinyZone *a_zone, const ShinyZone *a_root) {
+	float fTicksToPc = 100.0f / a_root->data.childTicks.avg;
+	output = printZone(output, a_zone, fTicksToPc);
+	(*output++) = '\0';
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyPrintNodes(char* output, const ShinyNode *a_root) {
+	float fTicksToPc = 100.0f / a_root->data.childTicks.avg;
+	const ShinyNode *node = a_root;
+
+	output = printHeader(output, "call tree");
+	(*output++) = '\n';
+
+	for (;;) {
+		output = printNode(output, node, fTicksToPc);
+
+		node = ShinyNode_findNextInTree(node);
+		if (node) {
+			(*output++) = '\n';
+		} else {
+			(*output++) = '\0';
+			return;
+		}
+	}
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyPrintZones(char* output, const ShinyZone *a_root) {
+	float fTicksToPc = 100.0f / a_root->data.childTicks.avg;
+	const ShinyZone *zone = a_root;
+
+	output = printHeader(output, "sorted list");
+	(*output++) = '\n';
+
+	for (;;) {
+		output = printZone(output, zone, fTicksToPc);
+
+		zone = zone->next;
+		if (zone) {
+			(*output++) = '\n';
+		} else {
+			(*output++) = '\0';
+			return;
+		}
+	}
+}
+
+#endif /* SLIC3R_PROFILE */

deps_src/Shiny/ShinyOutput.h

@@ -0,0 +1,68 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_OUTPUT_H
+#define SHINY_OUTPUT_H
+
+#include "ShinyNode.h"
+#include "ShinyZone.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+SHINY_API int ShinyPrintNodesSize(uint32_t a_count);
+SHINY_API int ShinyPrintZonesSize(uint32_t a_count);
+
+SHINY_API void ShinyPrintANode(char* output, const ShinyNode *a_node, const ShinyNode *a_root);
+SHINY_API void ShinyPrintAZone(char* output, const ShinyZone *a_zone, const ShinyZone *a_root);
+
+SHINY_API void ShinyPrintNodes(char* output, const ShinyNode *a_root);
+SHINY_API void ShinyPrintZones(char* output, const ShinyZone *a_root);
+
+
+/*---------------------------------------------------------------------------*/
+
+#if __cplusplus
+} /* end of extern "C" */
+#include <string>
+
+SHINY_INLINE std::string ShinyNodesToString(const ShinyNode *a_root, uint32_t a_count) {
+	std::string str;
+	str.resize(ShinyPrintNodesSize(a_count) - 1);
+	ShinyPrintNodes(&str[0], a_root);
+	return str;
+}
+
+SHINY_INLINE std::string ShinyZonesToString(const ShinyZone *a_root, uint32_t a_count) {
+	std::string str;
+	str.resize(ShinyPrintZonesSize(a_count) - 1);
+	ShinyPrintZones(&str[0], a_root);
+	return str;
+}
+#endif /* __cplusplus */
+
+#endif /* SHINY_OUTPUT_H */

deps_src/Shiny/ShinyPrereqs.h

@@ -0,0 +1,138 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_PREREQS_H
+#define SHINY_PREREQS_H
+
+
+#include <stdint.h>
+
+/*---------------------------------------------------------------------------*/
+
+#ifndef FALSE
+#define FALSE	0x0
+#endif
+
+#ifndef TRUE
+#define TRUE	0x1
+#endif
+
+#ifndef NULL
+#define NULL	0
+#endif
+
+#include "ShinyConfig.h"
+#include "ShinyVersion.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+#define SHINY_PLATFORM_WIN32	0x1
+#define SHINY_PLATFORM_POSIX	0x2
+
+#if defined (_WIN32)
+#   define SHINY_PLATFORM	SHINY_PLATFORM_WIN32
+
+#else /* ASSUME: POSIX-compliant OS */
+#   define SHINY_PLATFORM	SHINY_PLATFORM_POSIX
+#endif
+
+
+/*---------------------------------------------------------------------------*/
+
+#define SHINY_COMPILER_MSVC		0x1
+#define SHINY_COMPILER_GNUC		0x2
+#define SHINY_COMPILER_OTHER	0x3
+
+#if defined (_MSC_VER)
+#   define SHINY_COMPILER	SHINY_COMPILER_MSVC
+
+#elif defined (__GNUG__)
+#   define SHINY_COMPILER	SHINY_COMPILER_GNUC
+
+#else
+#   define SHINY_COMPILER	SHINY_COMPILER_OTHER
+#endif
+
+
+/*---------------------------------------------------------------------------*/
+
+#if SHINY_COMPILER == SHINY_COMPILER_GNUC
+#include <sys/types.h>
+#include <stdint.h>
+#endif
+
+
+/*---------------------------------------------------------------------------*/
+
+struct _ShinyNode;
+struct _ShinyZone;
+
+typedef struct _ShinyNode* ShinyNodeCache;
+typedef struct _ShinyNode* ShinyNodeTable;
+
+/*---------------------------------------------------------------------------*/
+
+#define SHINY_API
+
+/*---------------------------------------------------------------------------*/
+
+#if SHINY_COMPILER == SHINY_COMPILER_MSVC
+#	define SHINY_INLINE		__inline
+#	define SHINY_UNUSED
+#elif SHINY_COMPILER == SHINY_COMPILER_GNUC
+#	define SHINY_INLINE		inline
+#	define SHINY_UNUSED		__attribute__((unused))
+#elif SHINY_COMPILER == SHINY_COMPILER_OTHER
+#	define SHINY_INLINE		inline
+#	define SHINY_UNUSED
+#endif
+
+
+/*---------------------------------------------------------------------------*/
+
+#if SHINY_COMPILER == SHINY_COMPILER_MSVC
+	typedef int					int32_t;
+	typedef unsigned int		uint32_t;
+
+	typedef __int64				int64_t;
+	typedef unsigned __int64	uint64_t;
+
+/*
+#elif defined(__CYGWIN__)
+	typedef u_int32_t			uint32_t;
+	typedef u_int64_t			uint64_t;
+*/
+#endif
+
+	typedef uint64_t			shinytick_t;
+
+#if __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* SHINY_PREREQS_H */

deps_src/Shiny/ShinyTools.c

@@ -0,0 +1,116 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifdef SLIC3R_PROFILE
+
+#include "ShinyTools.h"
+
+#if SHINY_PLATFORM == SHINY_PLATFORM_WIN32
+#define WIN32_LEAN_AND_MEAN
+#ifndef NOMINMAX
+	#define NOMINMAX
+#endif /* NOMINMAX */
+#include <windows.h>
+
+#elif SHINY_PLATFORM == SHINY_PLATFORM_POSIX
+#include <sys/time.h>
+#endif
+
+
+/*---------------------------------------------------------------------------*/
+
+const ShinyTimeUnit* ShinyGetTimeUnit(float ticks) {
+	static ShinyTimeUnit units[4] = { 0 };
+
+	if (units[0].tickFreq == 0) { /* auto initialize first time */
+		units[0].tickFreq = ShinyGetTickFreq() / 1.0f;
+		units[0].invTickFreq = ShinyGetTickInvFreq() * 1.0f;
+		units[0].suffix = "s";
+
+		units[1].tickFreq = ShinyGetTickFreq() / 1000.0f;
+		units[1].invTickFreq = ShinyGetTickInvFreq() * 1000.0f;
+		units[1].suffix = "ms";
+
+		units[2].tickFreq = ShinyGetTickFreq() / 1000000.0f;
+		units[2].invTickFreq = ShinyGetTickInvFreq() * 1000000.0f;
+		units[2].suffix = "us";
+
+		units[3].tickFreq = ShinyGetTickFreq() / 1000000000.0f;
+		units[3].invTickFreq = ShinyGetTickInvFreq() * 1000000000.0f;
+		units[3].suffix = "ns";
+	}
+
+	if (units[0].tickFreq < ticks) return &units[0];
+	else if (units[1].tickFreq < ticks) return &units[1];
+	else if (units[2].tickFreq < ticks) return &units[2];
+	else return &units[3];
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+#if SHINY_PLATFORM == SHINY_PLATFORM_WIN32
+
+void ShinyGetTicks(shinytick_t *p) {
+	QueryPerformanceCounter((LARGE_INTEGER*)(p));
+}
+
+shinytick_t ShinyGetTickFreq(void) {
+	static shinytick_t freq = 0;
+	if (freq == 0) QueryPerformanceFrequency((LARGE_INTEGER*)(&freq));
+	return freq;
+}
+
+float ShinyGetTickInvFreq(void) {
+	static float invfreq = 0;
+	if (invfreq == 0) invfreq = 1.0f / ShinyGetTickFreq();
+	return invfreq;
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+#elif SHINY_PLATFORM == SHINY_PLATFORM_POSIX
+
+//#include <time.h>
+//#include <sys/time.h>
+
+void ShinyGetTicks(shinytick_t *p) {
+	struct timeval time;
+	gettimeofday(&time, NULL);
+
+	*p = time.tv_sec * 1000000 + time.tv_usec;
+}
+
+shinytick_t ShinyGetTickFreq(void) {
+	return 1000000;
+}
+
+float ShinyGetTickInvFreq(void) {
+	return 1.0f / 1000000.0f;
+}
+
+#endif
+
+#endif /* SLIC3R_PROFILE */

deps_src/Shiny/ShinyTools.h

@@ -0,0 +1,57 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_TOOLS_H
+#define SHINY_TOOLS_H
+
+#include "ShinyPrereqs.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+typedef struct {
+	float tickFreq;
+	float invTickFreq;
+	const char* suffix;
+} ShinyTimeUnit;
+
+
+/*---------------------------------------------------------------------------*/
+
+SHINY_API const ShinyTimeUnit* ShinyGetTimeUnit(float ticks);
+
+SHINY_API void ShinyGetTicks(shinytick_t *p);
+
+SHINY_API shinytick_t ShinyGetTickFreq(void);
+
+SHINY_API float ShinyGetTickInvFreq(void);
+
+#if __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* SHINY_TOOLS_H */

deps_src/Shiny/ShinyVersion.h

@@ -0,0 +1,37 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_VERSION_H
+#define SHINY_VERSION_H
+
+
+/*---------------------------------------------------------------------------*/
+
+#define SHINY_VERSION			"2.6 RC1"
+#define SHINY_SHORTNAME			"Shiny"
+#define SHINY_FULLNAME			"Shiny Profiler"
+#define SHINY_COPYRIGHT			"Copyright (C) 2007-2010 Aidin Abedi"
+#define SHINY_DESCRIPTION		"Shiny is a state of the art profiler designed to help finding bottlenecks in your project."
+
+#endif /* SHINY_VERSION_H */

deps_src/Shiny/ShinyZone.c

@@ -0,0 +1,201 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifdef SLIC3R_PROFILE
+
+#include "ShinyZone.h"
+
+#include <memory.h>
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyZone_preUpdateChain(ShinyZone *first) {
+	ShinyZone* zone = first;
+
+	while (zone) {
+		ShinyData_clearCurrent(&(zone->data));
+		zone = zone->next;
+	}
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyZone_updateChain(ShinyZone *first, float a_damping) {
+	ShinyZone* zone = first;
+
+	do {
+		ShinyData_computeAverage(&(zone->data), a_damping);
+		zone = zone->next;
+	} while (zone);
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyZone_updateChainClean(ShinyZone *first) {
+	ShinyZone* zone = first;
+
+	do {
+		ShinyData_copyAverage(&(zone->data));
+		zone = zone->next;
+	} while (zone);
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyZone_resetChain(ShinyZone *first) {
+	ShinyZone* zone = first, *temp;
+
+	do {
+		zone->_state = SHINY_ZONE_STATE_HIDDEN;
+		temp = zone->next;
+		zone->next = NULL;
+		zone = temp;
+	} while (zone);
+}
+
+/*---------------------------------------------------------------------------*/
+
+/* A Linked-List Memory Sort
+   by Philip J. Erdelsky
+   pje@efgh.com
+   http://www.alumni.caltech.edu/~pje/
+
+   Modified by Aidin Abedi
+*/
+
+ShinyZone* ShinyZone_sortChain(ShinyZone **first) /* return ptr to last zone */
+{
+	ShinyZone *p = *first;
+
+	unsigned base;
+	unsigned long block_size;
+
+	struct tape
+	{
+		ShinyZone *first, *last;
+		unsigned long count;
+	} tape[4];
+
+	/* Distribute the records alternately to tape[0] and tape[1]. */
+
+	tape[0].count = tape[1].count = 0L;
+	tape[0].first = NULL;
+	base = 0;
+	while (p != NULL)
+	{
+		ShinyZone *next = p->next;
+		p->next = tape[base].first;
+		tape[base].first = p;
+		tape[base].count++;
+		p = next;
+		base ^= 1;
+	}
+
+	/* If the list is empty or contains only a single record, then */
+	/* tape[1].count == 0L and this part is vacuous.               */
+
+	for (base = 0, block_size = 1L; tape[base+1].count != 0L;
+		base ^= 2, block_size <<= 1)
+	{
+		int dest;
+		struct tape *tape0, *tape1;
+		tape0 = tape + base;
+		tape1 = tape + base + 1;
+		dest = base ^ 2;
+		tape[dest].count = tape[dest+1].count = 0;
+		for (; tape0->count != 0; dest ^= 1)
+		{
+			unsigned long n0, n1;
+			struct tape *output_tape = tape + dest;
+			n0 = n1 = block_size;
+			while (1)
+			{
+				ShinyZone *chosen_record;
+				struct tape *chosen_tape;
+				if (n0 == 0 || tape0->count == 0)
+				{
+					if (n1 == 0 || tape1->count == 0)
+						break;
+					chosen_tape = tape1;
+					n1--;
+				}
+				else if (n1 == 0 || tape1->count == 0)
+				{
+					chosen_tape = tape0;
+					n0--;
+				}
+				else if (ShinyZone_compare(tape1->first, tape0->first) > 0)
+				{
+					chosen_tape = tape1;
+					n1--;
+				}
+				else
+				{
+					chosen_tape = tape0;
+					n0--;
+				}
+				chosen_tape->count--;
+				chosen_record = chosen_tape->first;
+				chosen_tape->first = chosen_record->next;
+				if (output_tape->count == 0)
+					output_tape->first = chosen_record;
+				else
+					output_tape->last->next = chosen_record;
+				output_tape->last = chosen_record;
+				output_tape->count++;
+			}
+		}
+	}
+
+	if (tape[base].count > 1L) {
+		ShinyZone* last = tape[base].last;
+		*first = tape[base].first;
+		last->next = NULL;
+		return last;
+
+	} else {
+		return NULL;
+	}
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyZone_clear(ShinyZone* self) {
+	memset(self, 0, sizeof(ShinyZone));
+}
+
+
+/*---------------------------------------------------------------------------*/
+
+void ShinyZone_enumerateZones(const ShinyZone* a_zone, void (*a_func)(const ShinyZone*)) {
+	a_func(a_zone);
+
+	if (a_zone->next) ShinyZone_enumerateZones(a_zone->next, a_func);
+}
+
+#endif /* SLIC3R_PROFILE */

deps_src/Shiny/ShinyZone.h

@@ -0,0 +1,91 @@
+/*
+The MIT License
+
+Copyright (c) 2007-2010 Aidin Abedi http://code.google.com/p/shinyprofiler/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef SHINY_ZONE_H
+#define SHINY_ZONE_H
+
+#include "ShinyData.h"
+#include <memory.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+#define SHINY_ZONE_STATE_HIDDEN			0
+#define SHINY_ZONE_STATE_INITIALIZED	1
+#define SHINY_ZONE_STATE_UPDATING		2
+
+
+/*---------------------------------------------------------------------------*/
+
+typedef struct _ShinyZone {
+	struct _ShinyZone* next;
+	int _state;
+	const char* name;
+	ShinyData data;
+} ShinyZone;
+
+
+/*---------------------------------------------------------------------------*/
+
+SHINY_INLINE void ShinyZone_init(ShinyZone *self, ShinyZone* a_prev) {
+	self->_state = SHINY_ZONE_STATE_INITIALIZED;
+	a_prev->next = self;
+}
+
+SHINY_INLINE void ShinyZone_uninit(ShinyZone *self) {
+	self->_state = SHINY_ZONE_STATE_HIDDEN;
+	self->next = NULL;
+}
+
+SHINY_API void ShinyZone_preUpdateChain(ShinyZone *first);
+SHINY_API void ShinyZone_updateChain(ShinyZone *first, float a_damping);
+SHINY_API void ShinyZone_updateChainClean(ShinyZone *first);
+
+SHINY_API void ShinyZone_resetChain(ShinyZone *first);
+
+SHINY_API ShinyZone* ShinyZone_sortChain(ShinyZone **first);
+
+SHINY_INLINE float ShinyZone_compare(ShinyZone *a, ShinyZone *b) {
+	return a->data.selfTicks.avg - b->data.selfTicks.avg;
+}
+
+SHINY_API void ShinyZone_clear(ShinyZone* self);
+
+SHINY_API void ShinyZone_enumerateZones(const ShinyZone* a_zone, void (*a_func)(const ShinyZone*));
+
+#if __cplusplus
+} /* end of extern "C" */
+
+template <class T>
+void ShinyZone_enumerateZones(const ShinyZone* a_zone, T* a_this, void (T::*a_func)(const ShinyZone*)) {
+	(a_this->*a_func)(a_zone);
+
+	if (a_zone->next) ShinyZone_enumerateZones(a_zone->next, a_this, a_func);
+}
+#endif /* __cplusplus */
+
+#endif /* SHINY_ZONE_H */

deps_src/admesh/CMakeLists.txt

@@ -0,0 +1,22 @@
+cmake_minimum_required(VERSION 3.13)
+project(admesh)
+
+add_library(admesh STATIC
+    connect.cpp
+    normals.cpp
+    shared.cpp
+    stl.h
+    stl_io.cpp
+    stlinit.cpp
+    util.cpp
+)
+
+target_include_directories(admesh PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/..
+)
+
+target_link_libraries(admesh 
+    PRIVATE boost_headeronly
+    PUBLIC eigen
+)

deps_src/admesh/connect.cpp

@@ -0,0 +1,743 @@
+/*  ADMesh -- process triangulated solid meshes
+ *  Copyright (C) 1995, 1996  Anthony D. Martin <amartin@engr.csulb.edu>
+ *  Copyright (C) 2013, 2014  several contributors, see AUTHORS
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  Questions, comments, suggestions, etc to
+ *           https://github.com/admesh/admesh/issues
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include <algorithm>
+#include <vector>
+
+#include <boost/predef/other/endian.h>
+#include <boost/log/trivial.hpp>
+// Boost pool: Don't use mutexes to synchronize memory allocation.
+#define BOOST_POOL_NO_MT
+#include <boost/pool/object_pool.hpp>
+
+#include "stl.h"
+
+struct HashEdge {
+	// Key of a hash edge: sorted vertices of the edge.
+	uint32_t       key[6];
+	// Compare two keys.
+	bool operator==(const HashEdge &rhs) const { return memcmp(key, rhs.key, sizeof(key)) == 0; }
+	bool operator!=(const HashEdge &rhs) const { return ! (*this == rhs); }
+	int  hash(int M) const { return ((key[0] / 11 + key[1] / 7 + key[2] / 3) ^ (key[3] / 11  + key[4] / 7 + key[5] / 3)) % M; }
+
+	// Index of a facet owning this edge.
+	int        facet_number;
+	// Index of this edge inside the facet with an index of facet_number.
+	// If this edge is stored backwards, which_edge is increased by 3.
+	int        which_edge;
+	HashEdge  *next;
+
+	void load_exact(stl_file *stl, const stl_vertex *a, const stl_vertex *b)
+	{
+		{
+	    	stl_vertex diff = (*a - *b).cwiseAbs();
+	    	float max_diff = std::max(diff(0), std::max(diff(1), diff(2)));
+	    	stl->stats.shortest_edge = std::min(max_diff, stl->stats.shortest_edge);
+	  	}
+
+	  	// Ensure identical vertex ordering of equal edges.
+	  	// This method is numerically robust.
+	  	if (vertex_lower(*a, *b)) {
+	  	} else {
+	  		// This edge is loaded backwards.
+		    std::swap(a, b);
+		    this->which_edge += 3;
+	  	}
+	  	memcpy(&this->key[0], a->data(), sizeof(stl_vertex));
+	  	memcpy(&this->key[3], b->data(), sizeof(stl_vertex));
+	  	// Switch negative zeros to positive zeros, so memcmp will consider them to be equal.
+	  	for (size_t i = 0; i < 6; ++ i) {
+	    	unsigned char *p = (unsigned char*)(this->key + i);
+	#if BOOST_ENDIAN_LITTLE_BYTE
+	    	if (p[0] == 0 && p[1] == 0 && p[2] == 0 && p[3] == 0x80)
+	      		// Negative zero, switch to positive zero.
+	      		p[3] = 0;
+	#else /* BOOST_ENDIAN_LITTLE_BYTE */
+	    	if (p[0] == 0x80 && p[1] == 0 && p[2] == 0 && p[3] == 0)
+	      		// Negative zero, switch to positive zero.
+	      		p[0] = 0;
+	#endif /* BOOST_ENDIAN_LITTLE_BYTE */
+	  	}
+	}
+
+	bool load_nearby(const stl_file *stl, const stl_vertex &a, const stl_vertex &b, float tolerance)
+	{
+		// Index of a grid cell spaced by tolerance.
+		typedef Eigen::Matrix<int32_t,  3, 1, Eigen::DontAlign> Vec3i32;
+		Vec3i32 vertex1 = ((a - stl->stats.min) / tolerance).cast<int32_t>();
+		Vec3i32 vertex2 = ((b - stl->stats.min) / tolerance).cast<int32_t>();
+		static_assert(sizeof(Vec3i32) == 12, "size of Vec3i32 incorrect");
+
+		if (vertex1 == vertex2)
+			// Both vertices hash to the same value
+			return false;
+
+		// Ensure identical vertex ordering of edges, which vertices land into equal grid cells.
+		// This method is numerically robust.
+		if ((vertex1[0] != vertex2[0]) ? 
+		    (vertex1[0] < vertex2[0]) : 
+		    ((vertex1[1] != vertex2[1]) ? 
+		        (vertex1[1] < vertex2[1]) : 
+		        (vertex1[2] < vertex2[2]))) {
+			memcpy(&this->key[0], vertex1.data(), sizeof(stl_vertex));
+			memcpy(&this->key[3], vertex2.data(), sizeof(stl_vertex));
+		} else {
+			memcpy(&this->key[0], vertex2.data(), sizeof(stl_vertex));
+			memcpy(&this->key[3], vertex1.data(), sizeof(stl_vertex));
+			this->which_edge += 3; /* this edge is loaded backwards */
+		}
+		return true;
+	}
+
+private:
+	inline bool vertex_lower(const stl_vertex &a, const stl_vertex &b) {
+	  	return (a(0) != b(0)) ? (a(0) < b(0)) :
+	           ((a(1) != b(1)) ? (a(1) < b(1)) : (a(2) < b(2)));
+	}
+};
+
+struct HashTableEdges {
+	HashTableEdges(size_t number_of_faces) {
+		this->M = (int)hash_size_from_nr_faces(number_of_faces);
+		this->heads.assign(this->M, nullptr);
+		this->tail = pool.construct();
+		this->tail->next = this->tail;
+		for (int i = 0; i < this->M; ++ i)
+			this->heads[i] = this->tail;
+	}
+	~HashTableEdges() {
+#ifndef NDEBUG
+		for (int i = 0; i < this->M; ++ i)
+	    	for (HashEdge *temp = this->heads[i]; temp != this->tail; temp = temp->next)
+	        	++ this->freed;
+		this->tail = nullptr;
+#endif /* NDEBUG */
+	}
+
+	void insert_edge_exact(stl_file *stl, const HashEdge &edge)
+	{
+		this->insert_edge(stl, edge, [stl](const HashEdge& edge1, const HashEdge& edge2) { record_neighbors(stl, edge1, edge2); });
+	}
+
+	void insert_edge_nearby(stl_file *stl, const HashEdge &edge)
+	{
+		this->insert_edge(stl, edge, [stl](const HashEdge& edge1, const HashEdge& edge2) { match_neighbors_nearby(stl, edge1, edge2); });
+	}
+
+	// Hash table on edges
+	std::vector<HashEdge*> 	heads;
+	HashEdge* 				tail;
+	int           			M;
+	boost::object_pool<HashEdge> pool;
+
+#ifndef NDEBUG
+	size_t 					malloced   	= 0;
+	size_t 					freed 	  	= 0;
+	size_t 					collisions 	= 0;
+#endif /* NDEBUG */
+
+private:
+	static inline size_t hash_size_from_nr_faces(const size_t nr_faces)
+	{
+		// Good primes for addressing a cca. 30 bit space.
+		// https://planetmath.org/goodhashtableprimes
+		static std::vector<uint32_t> primes{ 98317, 196613, 393241, 786433, 1572869, 3145739, 6291469, 12582917, 25165843, 50331653, 100663319, 201326611, 402653189, 805306457, 1610612741 };
+		// Find a prime number for 50% filling of the shared triangle edges in the mesh.
+		auto it = std::upper_bound(primes.begin(), primes.end(), nr_faces * 3 * 2 - 1);
+		return (it == primes.end()) ? primes.back() : *it;
+	}
+
+
+	// MatchNeighbors(stl_file *stl, const HashEdge &edge_a, const HashEdge &edge_b)
+	template<typename MatchNeighbors>
+	void insert_edge(stl_file *stl, const HashEdge &edge, MatchNeighbors match_neighbors)
+	{
+		int       chain_number = edge.hash(this->M);
+		HashEdge *link         = this->heads[chain_number];
+		if (link == this->tail) {
+			// This list doesn't have any edges currently in it.  Add this one.
+			HashEdge *new_edge = pool.construct(edge);
+#ifndef NDEBUG
+			++ this->malloced;
+#endif /* NDEBUG */
+			new_edge->next = this->tail;
+			this->heads[chain_number] = new_edge;
+		} else if (edges_equal(edge, *link)) {
+			// This is a match.  Record result in neighbors list.
+			match_neighbors(edge, *link);
+			// Delete the matched edge from the list.
+			this->heads[chain_number] = link->next;
+			// pool.destroy(link);
+#ifndef NDEBUG
+			++ this->freed;
+#endif /* NDEBUG */
+		} else {
+			// Continue through the rest of the list.
+			for (;;) {
+				if (link->next == this->tail) {
+					// This is the last item in the list. Insert a new edge.
+					HashEdge *new_edge = pool.construct();
+#ifndef NDEBUG
+					++ this->malloced;
+#endif /* NDEBUG */
+					*new_edge = edge;
+					new_edge->next = this->tail;
+					link->next = new_edge;
+#ifndef NDEBUG
+					++ this->collisions;
+#endif /* NDEBUG */
+					break;
+				}
+				if (edges_equal(edge, *link->next)) {
+					// This is a match.  Record result in neighbors list.
+					match_neighbors(edge, *link->next);
+					// Delete the matched edge from the list.
+					HashEdge *temp = link->next;
+					link->next = link->next->next;
+					// pool.destroy(temp);
+#ifndef NDEBUG
+					++ this->freed;
+#endif /* NDEBUG */
+					break;
+				}
+				// This is not a match.  Go to the next link.
+				link = link->next;
+#ifndef NDEBUG
+				++ this->collisions;
+#endif /* NDEBUG */
+			}
+		}
+	}
+
+	// Edges equal for hashing. Edgesof different facet are allowed to be matched.
+	static inline bool edges_equal(const HashEdge &edge_a, const HashEdge &edge_b)
+	{
+	    return edge_a.facet_number != edge_b.facet_number && edge_a == edge_b;
+	}
+
+	// Connect edge_a with edge_b, update edge connection statistics.
+	static void record_neighbors(stl_file *stl, const HashEdge &edge_a, const HashEdge &edge_b)
+	{
+		// Facet a's neighbor is facet b
+		stl->neighbors_start[edge_a.facet_number].neighbor[edge_a.which_edge % 3] = edge_b.facet_number;	/* sets the .neighbor part */
+		stl->neighbors_start[edge_a.facet_number].which_vertex_not[edge_a.which_edge % 3] = (edge_b.which_edge + 2) % 3; /* sets the .which_vertex_not part */
+
+		// Facet b's neighbor is facet a
+		stl->neighbors_start[edge_b.facet_number].neighbor[edge_b.which_edge % 3] = edge_a.facet_number;	/* sets the .neighbor part */
+		stl->neighbors_start[edge_b.facet_number].which_vertex_not[edge_b.which_edge % 3] = (edge_a.which_edge + 2) % 3; /* sets the .which_vertex_not part */
+
+		if ((edge_a.which_edge < 3 && edge_b.which_edge < 3) || (edge_a.which_edge > 2 && edge_b.which_edge > 2)) {
+			// These facets are oriented in opposite directions, their normals are probably messed up.
+			stl->neighbors_start[edge_a.facet_number].which_vertex_not[edge_a.which_edge % 3] += 3;
+			stl->neighbors_start[edge_b.facet_number].which_vertex_not[edge_b.which_edge % 3] += 3;
+		}
+
+		// Count successful connects:
+		// Total connects:
+		stl->stats.connected_edges += 2;
+		// Count individual connects:
+		switch (stl->neighbors_start[edge_a.facet_number].num_neighbors()) {
+		case 1:	++ stl->stats.connected_facets_1_edge; break;
+		case 2: ++ stl->stats.connected_facets_2_edge; break;
+		case 3: ++ stl->stats.connected_facets_3_edge; break;
+		default: assert(false);
+		}
+		switch (stl->neighbors_start[edge_b.facet_number].num_neighbors()) {
+		case 1:	++ stl->stats.connected_facets_1_edge; break;
+		case 2: ++ stl->stats.connected_facets_2_edge; break;
+		case 3: ++ stl->stats.connected_facets_3_edge; break;
+		default: assert(false);
+		}
+	}
+
+	static void match_neighbors_nearby(stl_file *stl, const HashEdge &edge_a, const HashEdge &edge_b)
+	{
+		record_neighbors(stl, edge_a, edge_b);
+
+		// Which vertices to change
+		int facet1 = -1;
+		int facet2 = -1;
+		int vertex1, vertex2;
+		stl_vertex new_vertex1, new_vertex2;
+		{
+			int v1a; // pair 1, facet a
+			int v1b; // pair 1, facet b
+			int v2a; // pair 2, facet a
+			int v2b; // pair 2, facet b
+			// Find first pair.
+			if (edge_a.which_edge < 3) {
+				v1a = edge_a.which_edge;
+				v2a = (edge_a.which_edge + 1) % 3;
+			} else {
+				v2a = edge_a.which_edge % 3;
+				v1a = (edge_a.which_edge + 1) % 3;
+			}
+			if (edge_b.which_edge < 3) {
+				v1b = edge_b.which_edge;
+				v2b = (edge_b.which_edge + 1) % 3;
+			} else {
+				v2b = edge_b.which_edge % 3;
+				v1b = (edge_b.which_edge + 1) % 3;
+			}
+
+			// Of the first pair, which vertex, if any, should be changed
+			if (stl->facet_start[edge_a.facet_number].vertex[v1a] != stl->facet_start[edge_b.facet_number].vertex[v1b]) {
+				// These facets are different.
+				if (   (stl->neighbors_start[edge_a.facet_number].neighbor[v1a] == -1)
+			        && (stl->neighbors_start[edge_a.facet_number].neighbor[(v1a + 2) % 3] == -1)) {
+			  		// This vertex has no neighbors.  This is a good one to change.
+			  		facet1 = edge_a.facet_number;
+			  		vertex1 = v1a;
+			  		new_vertex1 = stl->facet_start[edge_b.facet_number].vertex[v1b];
+				} else {
+				  	facet1 = edge_b.facet_number;
+			  		vertex1 = v1b;
+			  		new_vertex1 = stl->facet_start[edge_a.facet_number].vertex[v1a];
+				}
+			}
+
+			// Of the second pair, which vertex, if any, should be changed.
+			if (stl->facet_start[edge_a.facet_number].vertex[v2a] != stl->facet_start[edge_b.facet_number].vertex[v2b]) {
+				// These facets are different.
+				if (  (stl->neighbors_start[edge_a.facet_number].neighbor[v2a] == -1)
+			       && (stl->neighbors_start[edge_a.facet_number].neighbor[(v2a + 2) % 3] == -1)) {
+			  		// This vertex has no neighbors.  This is a good one to change.
+			  		facet2 = edge_a.facet_number;
+			  		vertex2 = v2a;
+			  		new_vertex2 = stl->facet_start[edge_b.facet_number].vertex[v2b];
+				} else {
+			  		facet2 = edge_b.facet_number;
+			  		vertex2 = v2b;
+			  		new_vertex2 = stl->facet_start[edge_a.facet_number].vertex[v2a];
+				}
+			}
+		}
+
+		auto change_vertices = [stl](int facet_num, int vnot, stl_vertex new_vertex)
+		{
+			int first_facet = facet_num;
+			bool direction = false;
+
+			for (;;) {
+				int pivot_vertex;
+				int next_edge;
+				if (vnot > 2) {
+					if (direction) {
+						pivot_vertex = (vnot + 1) % 3;
+						next_edge = vnot % 3;
+					}
+					else {
+						pivot_vertex = (vnot + 2) % 3;
+						next_edge = pivot_vertex;
+					}
+					direction = !direction;
+				}
+				else {
+					if (direction) {
+						pivot_vertex = (vnot + 2) % 3;
+						next_edge = pivot_vertex;
+					}
+					else {
+						pivot_vertex = (vnot + 1) % 3;
+						next_edge = vnot;
+					}
+				}
+	#if 0
+				if (stl->facet_start[facet_num].vertex[pivot_vertex](0) == new_vertex(0) &&
+					stl->facet_start[facet_num].vertex[pivot_vertex](1) == new_vertex(1) &&
+					stl->facet_start[facet_num].vertex[pivot_vertex](2) == new_vertex(2))
+					printf("Changing vertex %f,%f,%f: Same !!!\r\n", new_vertex(0), new_vertex(1), new_vertex(2));
+				else {
+					if (stl->facet_start[facet_num].vertex[pivot_vertex](0) != new_vertex(0))
+						printf("Changing coordinate x, vertex %e (0x%08x) to %e(0x%08x)\r\n",
+							stl->facet_start[facet_num].vertex[pivot_vertex](0),
+							*reinterpret_cast<const int*>(&stl->facet_start[facet_num].vertex[pivot_vertex](0)),
+							new_vertex(0),
+							*reinterpret_cast<const int*>(&new_vertex(0)));
+					if (stl->facet_start[facet_num].vertex[pivot_vertex](1) != new_vertex(1))
+						printf("Changing coordinate x, vertex %e (0x%08x) to %e(0x%08x)\r\n",
+							stl->facet_start[facet_num].vertex[pivot_vertex](1),
+							*reinterpret_cast<const int*>(&stl->facet_start[facet_num].vertex[pivot_vertex](1)),
+							new_vertex(1),
+							*reinterpret_cast<const int*>(&new_vertex(1)));
+					if (stl->facet_start[facet_num].vertex[pivot_vertex](2) != new_vertex(2))
+						printf("Changing coordinate x, vertex %e (0x%08x) to %e(0x%08x)\r\n",
+							stl->facet_start[facet_num].vertex[pivot_vertex](2),
+							*reinterpret_cast<const int*>(&stl->facet_start[facet_num].vertex[pivot_vertex](2)),
+							new_vertex(2),
+							*reinterpret_cast<const int*>(&new_vertex(2)));
+				}
+	#endif
+				stl->facet_start[facet_num].vertex[pivot_vertex] = new_vertex;
+				vnot = stl->neighbors_start[facet_num].which_vertex_not[next_edge];
+				facet_num = stl->neighbors_start[facet_num].neighbor[next_edge];
+				if (facet_num == -1)
+					break;
+
+				if (facet_num == first_facet) {
+					// back to the beginning
+					BOOST_LOG_TRIVIAL(info) << "Back to the first facet changing vertices: probably a mobius part. Try using a smaller tolerance or don't do a nearby check.";
+					return;
+				}
+			}
+		};
+
+		if (facet1 != -1) {
+			int vnot1 = (facet1 == edge_a.facet_number) ? 
+		  		(edge_a.which_edge + 2) % 3 :
+				(edge_b.which_edge + 2) % 3;
+			if (((vnot1 + 2) % 3) == vertex1)
+		  		vnot1 += 3;
+			change_vertices(facet1, vnot1, new_vertex1);
+		}
+		if (facet2 != -1) {
+			int vnot2 = (facet2 == edge_a.facet_number) ?
+		  		(edge_a.which_edge + 2) % 3 :
+				(edge_b.which_edge + 2) % 3;
+			if (((vnot2 + 2) % 3) == vertex2)
+		  		vnot2 += 3;
+			change_vertices(facet2, vnot2, new_vertex2);
+		}
+		stl->stats.edges_fixed += 2;
+	}
+};
+
+// This function builds the neighbors list.  No modifications are made
+// to any of the facets.  The edges are said to match only if all six
+// floats of the first edge matches all six floats of the second edge.
+void stl_check_facets_exact(stl_file *stl)
+{
+	assert(stl->facet_start.size() == stl->neighbors_start.size());
+
+  	stl->stats.connected_edges         = 0;
+  	stl->stats.connected_facets_1_edge = 0;
+  	stl->stats.connected_facets_2_edge = 0;
+  	stl->stats.connected_facets_3_edge = 0;
+
+  	// If any two of the three vertices are found to be exactally the same, call them degenerate and remove the facet.
+  	// Do it before the next step, as the next step stores references to the face indices in the hash tables and removing a facet
+  	// will break the references.
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets;) {
+		stl_facet &facet = stl->facet_start[i];
+	  	if (facet.vertex[0] == facet.vertex[1] || facet.vertex[1] == facet.vertex[2] || facet.vertex[0] == facet.vertex[2]) {
+		  	// Remove the degenerate facet.
+		  	facet = stl->facet_start[-- stl->stats.number_of_facets];
+			stl->facet_start.pop_back();
+			stl->neighbors_start.pop_back();
+		  	stl->stats.facets_removed += 1;
+		  	stl->stats.degenerate_facets += 1;
+	  	} else
+		  	++ i;
+  	}
+
+  	// Initialize hash table.
+  	HashTableEdges hash_table(stl->stats.number_of_facets);
+	for (auto &neighbor : stl->neighbors_start)
+		neighbor.reset();
+
+  	// Connect neighbor edges.
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+		const stl_facet &facet = stl->facet_start[i];
+		for (int j = 0; j < 3; ++ j) {
+			HashEdge edge;
+			edge.facet_number = i;
+			edge.which_edge = j;
+			edge.load_exact(stl, &facet.vertex[j], &facet.vertex[(j + 1) % 3]);
+			hash_table.insert_edge_exact(stl, edge);
+		}
+	}
+
+#if 0
+	printf("Number of faces: %d, number of manifold edges: %d, number of connected edges: %d, number of unconnected edges: %d\r\n", 
+    	stl->stats.number_of_facets, stl->stats.number_of_facets * 3, 
+    	stl->stats.connected_edges, stl->stats.number_of_facets * 3 - stl->stats.connected_edges);
+#endif
+}
+
+void stl_check_facets_nearby(stl_file *stl, float tolerance)
+{
+	assert(stl->stats.connected_facets_3_edge <= stl->stats.connected_facets_2_edge);
+	assert(stl->stats.connected_facets_2_edge <= stl->stats.connected_facets_1_edge);
+	assert(stl->stats.connected_facets_1_edge <= stl->stats.number_of_facets);
+
+  	if (stl->stats.connected_facets_3_edge == stl->stats.number_of_facets)
+    	// No need to check any further.  All facets are connected.
+    	return;
+
+  	HashTableEdges hash_table(stl->stats.number_of_facets);
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+    	//FIXME is the copy necessary?
+    	stl_facet facet = stl->facet_start[i];
+    	for (int j = 0; j < 3; j++) {
+      		if (stl->neighbors_start[i].neighbor[j] == -1) {
+        		HashEdge edge;
+        		edge.facet_number = i;
+        		edge.which_edge = j;
+        		if (edge.load_nearby(stl, facet.vertex[j], facet.vertex[(j + 1) % 3], tolerance))
+          			// Only insert edges that have different keys.
+          			hash_table.insert_edge_nearby(stl, edge);
+      		}
+    	}
+  	}
+}
+
+void stl_remove_unconnected_facets(stl_file *stl)
+{
+	// A couple of things need to be done here.  One is to remove any completely unconnected facets (0 edges connected) since these are
+	// useless and could be completely wrong.   The second thing that needs to be done is to remove any degenerate facets that were created during
+	// stl_check_facets_nearby().
+	auto remove_facet = [stl](int facet_number)
+	{
+		++ stl->stats.facets_removed;
+		/* Update list of connected edges */
+		stl_neighbors &neighbors = stl->neighbors_start[facet_number];
+		// Update statistics on unconnected triangle edges.
+		switch (neighbors.num_neighbors()) {
+		case 3: -- stl->stats.connected_facets_3_edge; // fall through
+		case 2: -- stl->stats.connected_facets_2_edge; // fall through
+		case 1: -- stl->stats.connected_facets_1_edge; // fall through
+		case 0: break;
+		default: assert(false);
+		}
+
+	  	if (facet_number < int(-- stl->stats.number_of_facets)) {
+	  		// Removing a face, which was not the last one.
+		  	// Copy the face and neighborship from the last face to facet_number.
+		  	stl->facet_start[facet_number] = stl->facet_start[stl->stats.number_of_facets];
+		  	neighbors = stl->neighbors_start[stl->stats.number_of_facets];
+		  	// Update neighborship of faces, which used to point to the last face, now moved to facet_number.
+		  	for (int i = 0; i < 3; ++ i)
+		    	if (neighbors.neighbor[i] != -1) {
+			    	int &other_face_idx = stl->neighbors_start[neighbors.neighbor[i]].neighbor[(neighbors.which_vertex_not[i] + 1) % 3];
+			  		if (other_face_idx != stl->stats.number_of_facets) {
+			  			BOOST_LOG_TRIVIAL(info) << "in remove_facet: neighbor = " << other_face_idx << " numfacets = " << stl->stats.number_of_facets << " this is wrong";
+			    		return;
+			  		}
+			  		other_face_idx = facet_number;
+		  		}
+		}
+
+	  	stl->facet_start.pop_back();
+	  	stl->neighbors_start.pop_back();
+	};
+
+	auto remove_degenerate = [stl, remove_facet](int facet)
+	{
+		// Update statistics on face connectivity after one edge was disconnected on the facet "facet_num".
+		auto update_connects_remove_1 = [stl](int facet_num) {
+			switch (stl->neighbors_start[facet_num].num_neighbors()) {
+			case 0: assert(false); break;
+			case 1: -- stl->stats.connected_facets_1_edge; break;
+			case 2: -- stl->stats.connected_facets_2_edge; break;
+			case 3: -- stl->stats.connected_facets_3_edge; break;
+			default: assert(false);
+		  	}
+		};
+
+		int edge_to_collapse = 0;
+	   	if (stl->facet_start[facet].vertex[0] == stl->facet_start[facet].vertex[1]) {
+			if (stl->facet_start[facet].vertex[1] == stl->facet_start[facet].vertex[2]) {
+				// All 3 vertices are equal. Collapse the edge with no neighbor if it exists.
+				const int *nbr = stl->neighbors_start[facet].neighbor;
+				edge_to_collapse = (nbr[0] == -1) ? 0 : (nbr[1] == -1) ? 1 : 2;
+			} else {
+				edge_to_collapse = 0;
+			}
+	  	} else if (stl->facet_start[facet].vertex[1] == stl->facet_start[facet].vertex[2]) {
+			edge_to_collapse = 1;
+	  	} else if (stl->facet_start[facet].vertex[2] == stl->facet_start[facet].vertex[0]) {
+			edge_to_collapse = 2;
+	  	} else {
+	    	// No degenerate. Function shouldn't have been called.
+	    	return;
+	  	}
+
+		int edge[3] = { (edge_to_collapse + 1) % 3, (edge_to_collapse + 2) % 3, edge_to_collapse };
+		int neighbor[] = {
+			stl->neighbors_start[facet].neighbor[edge[0]],
+			stl->neighbors_start[facet].neighbor[edge[1]],
+			stl->neighbors_start[facet].neighbor[edge[2]]
+		};
+		int vnot[] = {
+			stl->neighbors_start[facet].which_vertex_not[edge[0]],
+			stl->neighbors_start[facet].which_vertex_not[edge[1]],
+			stl->neighbors_start[facet].which_vertex_not[edge[2]]
+		};
+
+		// Update statistics on edge connectivity.
+		if ((neighbor[0] == -1) && (neighbor[1] != -1))
+			update_connects_remove_1(neighbor[1]);
+		if ((neighbor[1] == -1) && (neighbor[0] != -1))
+			update_connects_remove_1(neighbor[0]);
+
+	  	if (neighbor[0] >= 0) {
+			if (neighbor[1] >= 0) {
+				// Adjust the "flip" flag for the which_vertex_not values.
+				if (vnot[0] > 2) {
+					if (vnot[1] > 2) {
+						// The face to be removed has its normal flipped compared to the left & right neighbors, therefore after removing this face
+						// the two remaining neighbors will be oriented correctly.
+						vnot[0] -= 3;
+						vnot[1] -= 3;
+					} else
+						// One neighbor has its normal inverted compared to the face to be removed, the other is oriented equally.
+						// After removal, the two neighbors will have their normals flipped.
+						vnot[1] += 3;
+				} else if (vnot[1] > 2)
+					// One neighbor has its normal inverted compared to the face to be removed, the other is oriented equally.
+					// After removal, the two neighbors will have their normals flipped.
+					vnot[0] += 3;
+			}
+			stl->neighbors_start[neighbor[0]].neighbor[(vnot[0] + 1) % 3] = (neighbor[0] == neighbor[1]) ? -1 : neighbor[1];
+	    	stl->neighbors_start[neighbor[0]].which_vertex_not[(vnot[0] + 1) % 3] = vnot[1];
+	  	}
+	  	if (neighbor[1] >= 0) {
+			stl->neighbors_start[neighbor[1]].neighbor[(vnot[1] + 1) % 3] = (neighbor[0] == neighbor[1]) ? -1 : neighbor[0];
+	    	stl->neighbors_start[neighbor[1]].which_vertex_not[(vnot[1] + 1) % 3] = vnot[0];
+	  	}
+		if (neighbor[2] >= 0) {
+			update_connects_remove_1(neighbor[2]);
+			stl->neighbors_start[neighbor[2]].neighbor[(vnot[2] + 1) % 3] = -1;
+		}
+
+	  	remove_facet(facet);
+	};
+
+	// remove degenerate facets
+	for (uint32_t i = 0; i < stl->stats.number_of_facets;)
+		if (stl->facet_start[i].vertex[0] == stl->facet_start[i].vertex[1] ||
+			stl->facet_start[i].vertex[0] == stl->facet_start[i].vertex[2] ||
+			stl->facet_start[i].vertex[1] == stl->facet_start[i].vertex[2]) {
+			remove_degenerate(i);
+//			assert(stl_validate(stl));
+		} else
+			++ i;
+
+	if (stl->stats.connected_facets_1_edge < (int)stl->stats.number_of_facets) {
+		// There are some faces with no connected edge at all. Remove completely unconnected facets.
+		for (uint32_t i = 0; i < stl->stats.number_of_facets;)
+			if (stl->neighbors_start[i].num_neighbors() == 0) {
+				// This facet is completely unconnected.  Remove it.
+				remove_facet(i);
+				assert(stl_validate(stl));
+			} else
+				++ i;
+	}
+}
+
+void stl_fill_holes(stl_file *stl)
+{
+	// Insert all unconnected edges into hash list.
+	HashTableEdges hash_table(stl->stats.number_of_facets);
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+  		stl_facet facet = stl->facet_start[i];
+		for (int j = 0; j < 3; ++ j) {
+	  		if(stl->neighbors_start[i].neighbor[j] != -1)
+	  			continue;
+			HashEdge edge;
+	  		edge.facet_number = i;
+	  		edge.which_edge = j;
+	  		edge.load_exact(stl, &facet.vertex[j], &facet.vertex[(j + 1) % 3]);
+	  		hash_table.insert_edge_exact(stl, edge);
+		}
+	}
+
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+		stl_facet facet = stl->facet_start[i];
+		int neighbors_initial[3] = { stl->neighbors_start[i].neighbor[0], stl->neighbors_start[i].neighbor[1], stl->neighbors_start[i].neighbor[2] };
+		int first_facet = i;
+		for (int j = 0; j < 3; ++ j) {
+	  		if (stl->neighbors_start[i].neighbor[j] != -1)
+	  			continue;
+
+  			stl_facet new_facet;
+	  		new_facet.vertex[0] = facet.vertex[j];
+	  		new_facet.vertex[1] = facet.vertex[(j + 1) % 3];
+		  	bool direction = neighbors_initial[(j + 2) % 3] == -1;
+  			int facet_num = i;
+		  	int vnot = (j + 2) % 3;
+
+	  		for (;;) {
+				int pivot_vertex = 0;
+				int next_edge = 0;
+	    		if (vnot > 2) {
+	      			if (direction) {
+	        			pivot_vertex = (vnot + 1) % 3;
+	        			next_edge = vnot % 3;
+	      			} else {
+	        			pivot_vertex = (vnot + 2) % 3;
+	        			next_edge = pivot_vertex;
+	      			}
+	      			direction = ! direction;
+	    		} else {
+	      			if(direction == 0) {
+	        			pivot_vertex = (vnot + 1) % 3;
+	        			next_edge = vnot;
+	      			} else {
+	        			pivot_vertex = (vnot + 2) % 3;
+	        			next_edge = pivot_vertex;
+	      			}
+	    		}
+
+	    		int next_facet = stl->neighbors_start[facet_num].neighbor[next_edge];
+	    		if (next_facet == -1) {
+	      			new_facet.vertex[2] = stl->facet_start[facet_num].vertex[vnot % 3];
+				    stl_add_facet(stl, &new_facet);
+	      			for (int k = 0; k < 3; ++ k) {
+	      				HashEdge edge;
+	        			edge.facet_number = stl->stats.number_of_facets - 1;
+	        			edge.which_edge = k;
+	        			edge.load_exact(stl, &new_facet.vertex[k], &new_facet.vertex[(k + 1) % 3]);
+	        			hash_table.insert_edge_exact(stl, edge);
+	      			}
+	      			break;
+	    		}
+
+	      		vnot = stl->neighbors_start[facet_num].which_vertex_not[next_edge];
+	      		facet_num = next_facet;
+
+	    		if (facet_num == first_facet) {
+	      			// back to the beginning
+		  			BOOST_LOG_TRIVIAL(info) << "Back to the first facet filling holes: probably a mobius part. Try using a smaller tolerance or don't do a nearby check.";
+	      			return;
+	    		}
+	  		}
+		}
+	}
+}
+
+void stl_add_facet(stl_file *stl, const stl_facet *new_facet)
+{
+	assert(stl->facet_start.size() == stl->stats.number_of_facets);
+	assert(stl->neighbors_start.size() == stl->stats.number_of_facets);
+	stl->facet_start.emplace_back(*new_facet);
+  	// note that the normal vector is not set here, just initialized to 0.
+  	stl->facet_start[stl->stats.number_of_facets].normal = stl_normal::Zero();
+  	stl->neighbors_start.emplace_back();
+	++ stl->stats.facets_added;
+	++ stl->stats.number_of_facets;
+}

deps_src/admesh/normals.cpp

@@ -0,0 +1,239 @@
+/*  ADMesh -- process triangulated solid meshes
+ *  Copyright (C) 1995, 1996  Anthony D. Martin <amartin@engr.csulb.edu>
+ *  Copyright (C) 2013, 2014  several contributors, see AUTHORS
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  Questions, comments, suggestions, etc to
+ *           https://github.com/admesh/admesh/issues
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+// Boost pool: Don't use mutexes to synchronize memory allocation.
+#define BOOST_POOL_NO_MT
+#include <boost/pool/object_pool.hpp>
+
+#include "stl.h"
+
+static void reverse_facet(stl_file *stl, int facet_num)
+{
+	++ stl->stats.facets_reversed;
+
+	int neighbor[3] = { stl->neighbors_start[facet_num].neighbor[0], stl->neighbors_start[facet_num].neighbor[1], stl->neighbors_start[facet_num].neighbor[2] };
+	int vnot[3] = { stl->neighbors_start[facet_num].which_vertex_not[0], stl->neighbors_start[facet_num].which_vertex_not[1], stl->neighbors_start[facet_num].which_vertex_not[2] };
+
+	// reverse the facet
+	stl_vertex tmp_vertex = stl->facet_start[facet_num].vertex[0];
+	stl->facet_start[facet_num].vertex[0] = stl->facet_start[facet_num].vertex[1];
+	stl->facet_start[facet_num].vertex[1] = tmp_vertex;
+
+	// fix the vnots of the neighboring facets
+	if (neighbor[0] != -1)
+		stl->neighbors_start[neighbor[0]].which_vertex_not[(vnot[0] + 1) % 3] = (stl->neighbors_start[neighbor[0]].which_vertex_not[(vnot[0] + 1) % 3] + 3) % 6;
+	if (neighbor[1] != -1)
+		stl->neighbors_start[neighbor[1]].which_vertex_not[(vnot[1] + 1) % 3] = (stl->neighbors_start[neighbor[1]].which_vertex_not[(vnot[1] + 1) % 3] + 4) % 6;
+	if (neighbor[2] != -1)
+		stl->neighbors_start[neighbor[2]].which_vertex_not[(vnot[2] + 1) % 3] = (stl->neighbors_start[neighbor[2]].which_vertex_not[(vnot[2] + 1) % 3] + 2) % 6;
+
+	// swap the neighbors of the facet that is being reversed
+	stl->neighbors_start[facet_num].neighbor[1] = neighbor[2];
+	stl->neighbors_start[facet_num].neighbor[2] = neighbor[1];
+
+	// swap the vnots of the facet that is being reversed 
+	stl->neighbors_start[facet_num].which_vertex_not[1] = vnot[2];
+	stl->neighbors_start[facet_num].which_vertex_not[2] = vnot[1];
+
+	// reverse the values of the vnots of the facet that is being reversed
+	stl->neighbors_start[facet_num].which_vertex_not[0] = (stl->neighbors_start[facet_num].which_vertex_not[0] + 3) % 6;
+	stl->neighbors_start[facet_num].which_vertex_not[1] = (stl->neighbors_start[facet_num].which_vertex_not[1] + 3) % 6;
+	stl->neighbors_start[facet_num].which_vertex_not[2] = (stl->neighbors_start[facet_num].which_vertex_not[2] + 3) % 6;
+}
+
+// Returns true if the normal was flipped.
+static bool check_normal_vector(stl_file *stl, int facet_num, int normal_fix_flag)
+{
+	stl_facet *facet = &stl->facet_start[facet_num];
+
+	stl_normal normal;
+	stl_calculate_normal(normal, facet);
+	stl_normalize_vector(normal);
+	stl_normal normal_dif = (normal - facet->normal).cwiseAbs();
+
+	const float eps = 0.001f;
+	if (normal_dif(0) < eps && normal_dif(1) < eps && normal_dif(2) < eps) {
+		// Normal is within tolerance. It is not really necessary to change the values here, but just for consistency, I will.
+		facet->normal = normal;
+		return false;
+	}
+
+	stl_normal test_norm = facet->normal;
+	stl_normalize_vector(test_norm);
+	normal_dif = (normal - test_norm).cwiseAbs();
+	if (normal_dif(0) < eps && normal_dif(1) < eps && normal_dif(2) < eps) {
+		// The normal is not within tolerance, but direction is OK.
+		if (normal_fix_flag) {
+	  		facet->normal = normal;
+	  		++ stl->stats.normals_fixed;
+		}
+		return false;
+	}
+
+	test_norm *= -1.f;
+	normal_dif = (normal - test_norm).cwiseAbs();
+	if (normal_dif(0) < eps && normal_dif(1) < eps && normal_dif(2) < eps) {
+		// The normal is not within tolerance and backwards.
+		if (normal_fix_flag) {
+	  		facet->normal = normal;
+	  		++ stl->stats.normals_fixed;
+		}
+		return true;
+	}
+	if (normal_fix_flag) {
+		facet->normal = normal;
+		++ stl->stats.normals_fixed;
+	}
+	// Status is unknown.
+	return false;
+}
+
+void stl_fix_normal_directions(stl_file *stl)
+{
+ 	// This may happen for malformed models
+  	if (stl->stats.number_of_facets == 0)
+  		return;
+
+	struct stl_normal {
+    	int         facet_num;
+    	stl_normal *next;
+  	};
+
+  	// Initialize linked list.
+  	boost::object_pool<stl_normal> pool;
+   	stl_normal *head = pool.construct();
+  	stl_normal *tail = pool.construct();
+	head->next = tail;
+	tail->next = tail;
+
+	// Initialize list that keeps track of already fixed facets.
+	std::vector<char> norm_sw(stl->stats.number_of_facets, 0);
+	// Initialize list that keeps track of reversed facets.
+    std::vector<int>  reversed_ids;
+    reversed_ids.reserve(stl->stats.number_of_facets);
+
+  	int facet_num = 0;
+  	// If normal vector is not within tolerance and backwards:
+    // Arbitrarily starts at face 0.  If this one is wrong, we're screwed. Thankfully, the chances
+    // of it being wrong randomly are low if most of the triangles are right:
+  	if (check_normal_vector(stl, 0, 0)) {
+    	reverse_facet(stl, 0);
+      	reversed_ids.emplace_back(0);
+  	}
+
+  	// Say that we've fixed this facet:
+  	norm_sw[facet_num] = 1;
+	int checked = 1;
+
+  	for (;;) {
+    	// Add neighbors_to_list. Add unconnected neighbors to the list.
+    	bool force_exit = false;
+    	for (int j = 0; j < 3; ++ j) {
+      		// Reverse the neighboring facets if necessary.
+      		if (stl->neighbors_start[facet_num].which_vertex_not[j] > 2) {
+        		// If the facet has a neighbor that is -1, it means that edge isn't shared by another facet
+        		if (stl->neighbors_start[facet_num].neighbor[j] != -1) {
+            		if (norm_sw[stl->neighbors_start[facet_num].neighbor[j]] == 1) {
+                		// trying to modify a facet already marked as fixed, revert all changes made until now and exit (fixes: #716, #574, #413, #269, #262, #259, #230, #228, #206)
+                		for (int id = int(reversed_ids.size()) - 1; id >= 0; -- id)
+                    		reverse_facet(stl, reversed_ids[id]);
+                		force_exit = true;
+                		break;
+            		}
+            		reverse_facet(stl, stl->neighbors_start[facet_num].neighbor[j]);
+            		reversed_ids.emplace_back(stl->neighbors_start[facet_num].neighbor[j]);
+        		}
+      		}
+      		// If this edge of the facet is connected:
+      		if (stl->neighbors_start[facet_num].neighbor[j] != -1) {
+        		// If we haven't fixed this facet yet, add it to the list:
+        		if (norm_sw[stl->neighbors_start[facet_num].neighbor[j]] != 1) {
+	          		// Add node to beginning of list.
+	          		stl_normal *newn = pool.construct();
+	          		newn->facet_num = stl->neighbors_start[facet_num].neighbor[j];
+	          		newn->next = head->next;
+	          		head->next = newn;
+	        	}
+	      	}
+	    }
+
+    	// an error occourred, quit the for loop and exit
+    	if (force_exit)
+    		break;
+
+    	// Get next facet to fix from top of list.
+    	if (head->next != tail) {
+      		facet_num = head->next->facet_num;
+            assert(facet_num < stl->stats.number_of_facets);
+      		if (norm_sw[facet_num] != 1) { // If facet is in list multiple times
+        		norm_sw[facet_num] = 1; // Record this one as being fixed.
+        		++ checked;
+      		}
+      		stl_normal *temp = head->next;	// Delete this facet from the list.
+      		head->next = head->next->next;
+      		// pool.destroy(temp);
+    	} else { // If we ran out of facets to fix: All of the facets in this part have been fixed.
+      		++ stl->stats.number_of_parts;
+      		if (checked >= int(stl->stats.number_of_facets))
+        		// All of the facets have been checked.  Bail out.
+        		break;
+    		// There is another part here.  Find it and continue.
+    		for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+      			if (norm_sw[i] == 0) {
+        			// This is the first facet of the next part.
+        			facet_num = i;
+        			if (check_normal_vector(stl, i, 0)) {
+            			reverse_facet(stl, i);
+            			reversed_ids.emplace_back(i);
+        			}
+        			norm_sw[facet_num] = 1;
+        			++ checked;
+        			break;
+      			}
+    	}
+  	}
+
+	// pool.destroy(head);
+	// pool.destroy(tail);
+}
+
+void stl_fix_normal_values(stl_file *stl)
+{
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+    	check_normal_vector(stl, i, 1);
+}
+
+void stl_reverse_all_facets(stl_file *stl)
+{
+	stl_normal normal;
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+    	reverse_facet(stl, i);
+    	stl_calculate_normal(normal, &stl->facet_start[i]);
+    	stl_normalize_vector(normal);
+    	stl->facet_start[i].normal = normal;
+  	}
+}

deps_src/admesh/shared.cpp

@@ -0,0 +1,263 @@
+/*  ADMesh -- process triangulated solid meshes
+ *  Copyright (C) 1995, 1996  Anthony D. Martin <amartin@engr.csulb.edu>
+ *  Copyright (C) 2013, 2014  several contributors, see AUTHORS
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  Questions, comments, suggestions, etc to
+ *           https://github.com/admesh/admesh/issues
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <vector>
+
+#include <boost/log/trivial.hpp>
+#include <boost/nowide/cstdio.hpp>
+
+#include "stl.h"
+
+#include "libslic3r/LocalesUtils.hpp"
+
+void stl_generate_shared_vertices(stl_file *stl, indexed_triangle_set &its)
+{
+	// 3 indices to vertex per face
+	its.indices.assign(stl->stats.number_of_facets, stl_triangle_vertex_indices(-1, -1, -1));
+	// Shared vertices (3D coordinates)
+	its.vertices.clear();
+	its.vertices.reserve(stl->stats.number_of_facets / 2);
+
+	// A degenerate mesh may contain loops: Traversing a fan will end up in an endless loop
+	// while never reaching the starting face. To avoid these endless loops, traversed faces at each fan traversal
+	// are marked with a unique fan_traversal_stamp.
+	unsigned int			  fan_traversal_stamp = 0;
+	std::vector<unsigned int> fan_traversal_facet_visited(stl->stats.number_of_facets, 0);
+
+	for (uint32_t facet_idx = 0; facet_idx < stl->stats.number_of_facets; ++ facet_idx) {
+		for (int j = 0; j < 3; ++ j) {
+			if (its.indices[facet_idx][j] != -1)
+				// Shared vertex was already assigned.
+				continue;
+			// Create a new shared vertex.
+			its.vertices.emplace_back(stl->facet_start[facet_idx].vertex[j]);
+			// Traverse the fan around the j-th vertex of the i-th face, assign the newly created shared vertex index to all the neighboring triangles in the triangle fan.
+			int  facet_in_fan_idx 	= facet_idx;
+			bool edge_direction 	= false;
+			bool traversal_reversed = false;
+			int  vnot      			= (j + 2) % 3;
+			// Increase the 
+			++ fan_traversal_stamp;
+			for (;;) {
+				// Next edge on facet_in_fan_idx to be traversed. The edge is indexed by its starting vertex index.
+				int next_edge    = 0;
+				// Vertex index in facet_in_fan_idx, which is being pivoted around, and which is being assigned a new shared vertex.
+				int pivot_vertex = 0;
+				if (vnot > 2) {
+					// The edge of facet_in_fan_idx opposite to vnot is equally oriented, therefore
+					// the neighboring facet is flipped.
+			  		if (! edge_direction) {
+			    		pivot_vertex = (vnot + 2) % 3;
+			    		next_edge    = pivot_vertex;			    		
+			  		} else {
+			    		pivot_vertex = (vnot + 1) % 3;
+			    		next_edge    = vnot % 3;
+			  		}
+			  		edge_direction = ! edge_direction;
+				} else {
+					// The neighboring facet is correctly oriented.
+			  		if (! edge_direction) {
+			    		pivot_vertex = (vnot + 1) % 3;
+			    		next_edge    = vnot;
+			  		} else {
+			    		pivot_vertex = (vnot + 2) % 3;
+			    		next_edge    = pivot_vertex;
+			  		}
+				}
+				its.indices[facet_in_fan_idx][pivot_vertex] = its.vertices.size() - 1;
+				fan_traversal_facet_visited[facet_in_fan_idx] = fan_traversal_stamp;
+
+				// next_edge is an index of the starting vertex of the edge, not an index of the opposite vertex to the edge!
+				int next_facet = stl->neighbors_start[facet_in_fan_idx].neighbor[next_edge];
+				if (next_facet == -1) {
+					// No neighbor going in the current direction.
+					if (traversal_reversed) {
+						// Went to one limit, then turned back and reached the other limit. Quit the fan traversal.
+					    break;
+					} else {
+						// Reached the first limit. Now try to reverse and traverse up to the other limit.
+					    edge_direction        = true;
+					    vnot 	         	  = (j + 1) % 3;
+					    traversal_reversed    = true;
+				    	facet_in_fan_idx      = facet_idx;
+					}
+				} else if (next_facet == facet_idx) {
+					// Traversed a closed fan all around.
+//					assert(! traversal_reversed);
+					break;
+				} else if (next_facet >= (int)stl->stats.number_of_facets) {
+					// The mesh is not valid!
+					// assert(false);
+					break;
+				} else if (fan_traversal_facet_visited[next_facet] == fan_traversal_stamp) {
+					// Traversed a closed fan all around, but did not reach the starting face.
+					// This indicates an invalid geometry (non-manifold).
+					//assert(false);
+					break;
+				} else {
+					// Continue traversal.
+					// next_edge is an index of the starting vertex of the edge, not an index of the opposite vertex to the edge!
+					vnot = stl->neighbors_start[facet_in_fan_idx].which_vertex_not[next_edge];
+					facet_in_fan_idx = next_facet;
+				}
+			}
+		}
+	}
+}
+
+bool its_write_off(const indexed_triangle_set &its, const char *file)
+{
+    Slic3r::CNumericLocalesSetter locales_setter;
+	/* Open the file */
+	FILE *fp = boost::nowide::fopen(file, "w");
+	if (fp == nullptr) {
+		BOOST_LOG_TRIVIAL(error) << "stl_write_ascii: Couldn't open " << file << " for writing";
+		return false;
+	}
+
+	fprintf(fp, "OFF\n");
+	fprintf(fp, "%d %d 0\n", (int)its.vertices.size(), (int)its.indices.size());
+	for (int i = 0; i < its.vertices.size(); ++ i)
+		fprintf(fp, "\t%f %f %f\n", its.vertices[i](0), its.vertices[i](1), its.vertices[i](2));
+	for (uint32_t i = 0; i < its.indices.size(); ++ i)
+		fprintf(fp, "\t3 %d %d %d\n", its.indices[i][0], its.indices[i][1], its.indices[i][2]);
+	fclose(fp);
+	return true;
+}
+
+bool its_write_vrml(const indexed_triangle_set &its, const char *file)
+{
+    Slic3r::CNumericLocalesSetter locales_setter;
+	/* Open the file */
+  	FILE *fp = boost::nowide::fopen(file, "w");
+	if (fp == nullptr) {
+		BOOST_LOG_TRIVIAL(error) << "stl_write_vrml: Couldn't open " << file << " for writing";
+		return false;
+	}
+
+	fprintf(fp, "#VRML V1.0 ascii\n\n");
+	fprintf(fp, "Separator {\n");
+	fprintf(fp, "\tDEF STLShape ShapeHints {\n");
+	fprintf(fp, "\t\tvertexOrdering COUNTERCLOCKWISE\n");
+	fprintf(fp, "\t\tfaceType CONVEX\n");
+	fprintf(fp, "\t\tshapeType SOLID\n");
+	fprintf(fp, "\t\tcreaseAngle 0.0\n");
+	fprintf(fp, "\t}\n");
+	fprintf(fp, "\tDEF STLModel Separator {\n");
+	fprintf(fp, "\t\tDEF STLColor Material {\n");
+	fprintf(fp, "\t\t\temissiveColor 0.700000 0.700000 0.000000\n");
+	fprintf(fp, "\t\t}\n");
+	fprintf(fp, "\t\tDEF STLVertices Coordinate3 {\n");
+	fprintf(fp, "\t\t\tpoint [\n");
+
+	int i = 0;
+	for (; i + 1 < its.vertices.size(); ++ i)
+		fprintf(fp, "\t\t\t\t%f %f %f,\n", its.vertices[i](0), its.vertices[i](1), its.vertices[i](2));
+	fprintf(fp, "\t\t\t\t%f %f %f]\n", its.vertices[i](0), its.vertices[i](1), its.vertices[i](2));
+	fprintf(fp, "\t\t}\n");
+	fprintf(fp, "\t\tDEF STLTriangles IndexedFaceSet {\n");
+	fprintf(fp, "\t\t\tcoordIndex [\n");
+
+	for (size_t i = 0; i + 1 < its.indices.size(); ++ i)
+		fprintf(fp, "\t\t\t\t%d, %d, %d, -1,\n", its.indices[i][0], its.indices[i][1], its.indices[i][2]);
+	fprintf(fp, "\t\t\t\t%d, %d, %d, -1]\n", its.indices[i][0], its.indices[i][1], its.indices[i][2]);
+	fprintf(fp, "\t\t}\n");
+	fprintf(fp, "\t}\n");
+	fprintf(fp, "}\n");
+	fclose(fp);
+	return true;
+}
+
+bool its_write_obj(const indexed_triangle_set &its, const char *file)
+{
+    Slic3r::CNumericLocalesSetter locales_setter;
+  	FILE *fp = boost::nowide::fopen(file, "w");
+  	if (fp == nullptr) {
+		BOOST_LOG_TRIVIAL(error) << "stl_write_obj: Couldn't open " << file << " for writing";
+    	return false;
+  	}
+
+	for (size_t i = 0; i < its.vertices.size(); ++ i)
+    	fprintf(fp, "v %f %f %f\n", its.vertices[i](0), its.vertices[i](1), its.vertices[i](2));
+  	for (size_t i = 0; i < its.indices.size(); ++ i)
+    	fprintf(fp, "f %d %d %d\n", its.indices[i][0]+1, its.indices[i][1]+1, its.indices[i][2]+1);
+  	fclose(fp);
+  	return true;
+}
+
+
+// Check validity of the mesh, assert on error.
+bool stl_validate(const stl_file *stl, const indexed_triangle_set &its)
+{
+	assert(! stl->facet_start.empty());
+	assert(stl->facet_start.size() == stl->stats.number_of_facets);
+	assert(stl->neighbors_start.size() == stl->stats.number_of_facets);
+	assert(stl->facet_start.size() == stl->neighbors_start.size());
+	assert(! stl->neighbors_start.empty());
+	assert((its.indices.empty()) == (its.vertices.empty()));
+	assert(stl->stats.number_of_facets > 0);
+	assert(its.vertices.empty() || its.indices.size() == stl->stats.number_of_facets);
+
+#ifdef _DEBUG
+    // Verify validity of neighborship data.
+    for (int facet_idx = 0; facet_idx < (int)stl->stats.number_of_facets; ++ facet_idx) {
+        const stl_neighbors &nbr 		= stl->neighbors_start[facet_idx];
+        const int 			*vertices 	= its.indices.empty() ? nullptr : its.indices[facet_idx].data();
+        for (int nbr_idx = 0; nbr_idx < 3; ++ nbr_idx) {
+            int nbr_face = stl->neighbors_start[facet_idx].neighbor[nbr_idx];
+            assert(nbr_face < (int)stl->stats.number_of_facets);
+            if (nbr_face != -1) {
+            	int nbr_vnot = nbr.which_vertex_not[nbr_idx];
+				assert(nbr_vnot >= 0 && nbr_vnot < 6);
+				// Neighbor of the neighbor is the original face.
+				assert(stl->neighbors_start[nbr_face].neighbor[(nbr_vnot + 1) % 3] == facet_idx);
+				int vnot_back = stl->neighbors_start[nbr_face].which_vertex_not[(nbr_vnot + 1) % 3];
+				assert(vnot_back >= 0 && vnot_back < 6);
+				assert((nbr_vnot < 3) == (vnot_back < 3));
+				assert(vnot_back % 3 == (nbr_idx + 2) % 3);
+				if (vertices != nullptr) {
+					// Has shared vertices.
+	            	if (nbr_vnot < 3) {
+	            		// Faces facet_idx and nbr_face share two vertices accross the common edge. Faces are correctly oriented.
+						assert((its.indices[nbr_face][(nbr_vnot + 1) % 3] == vertices[(nbr_idx + 1) % 3] && its.indices[nbr_face][(nbr_vnot + 2) % 3] == vertices[nbr_idx]));
+					} else {
+	            		// Faces facet_idx and nbr_face share two vertices accross the common edge. Faces are incorrectly oriented, one of them is flipped.
+						assert((its.indices[nbr_face][(nbr_vnot + 2) % 3] == vertices[(nbr_idx + 1) % 3] && its.indices[nbr_face][(nbr_vnot + 1) % 3] == vertices[nbr_idx]));
+					}
+				}
+            }
+        }
+    }
+#endif /* _DEBUG */
+
+	return true;
+}
+
+// Check validity of the mesh, assert on error.
+bool stl_validate(const stl_file *stl)
+{
+	indexed_triangle_set its;
+	return stl_validate(stl, its);
+}

deps_src/admesh/stl.h

@@ -0,0 +1,416 @@
+/*  ADMesh -- process triangulated solid meshes
+ *  Copyright (C) 1995, 1996  Anthony D. Martin <amartin@engr.csulb.edu>
+ *  Copyright (C) 2013, 2014  several contributors, see AUTHORS
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  Questions, comments, suggestions, etc to
+ *           https://github.com/admesh/admesh/issues
+ */
+
+#ifndef __admesh_stl__
+#define __admesh_stl__
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stddef.h>
+
+#include <vector>
+#include <Eigen/Geometry> 
+
+// Size of the binary STL header, free form.
+#define LABEL_SIZE             80
+// Binary STL, length of the "number of faces" counter.
+#define NUM_FACET_SIZE         4
+// Binary STL, sizeof header + number of faces.
+#define HEADER_SIZE            84
+#define STL_MIN_FILE_SIZE      284
+#define ASCII_LINES_PER_FACET  7
+
+typedef Eigen::Matrix<float, 3, 1, Eigen::DontAlign> stl_vertex;
+typedef Eigen::Matrix<float, 3, 1, Eigen::DontAlign> stl_normal;
+typedef Eigen::Matrix<int,   3, 1, Eigen::DontAlign> stl_triangle_vertex_indices;
+static_assert(sizeof(stl_vertex) == 12, "size of stl_vertex incorrect");
+static_assert(sizeof(stl_normal) == 12, "size of stl_normal incorrect");
+
+typedef std::function<void(int current, int total, bool& cancel, std::string& model_id, std::string& code)> ImportstlProgressFn;
+
+typedef enum {
+    eNormal,  // normal face
+    eSmallOverhang,  // small overhang
+    eSmallHole,      // face with small hole
+    eExteriorAppearance,  // exterior appearance
+    eMaxNumFaceTypes
+}EnumFaceTypes;
+
+struct stl_facet {
+	stl_normal normal;
+	stl_vertex vertex[3];
+	char       extra[2];
+
+	stl_facet  rotated(const Eigen::Quaternion<float, Eigen::DontAlign> &rot) const {
+		stl_facet out;
+		out.normal    = rot * this->normal;
+		out.vertex[0] = rot * this->vertex[0];
+		out.vertex[1] = rot * this->vertex[1];
+		out.vertex[2] = rot * this->vertex[2];
+		return out;
+	}
+};
+
+#define SIZEOF_STL_FACET       50
+
+static_assert(offsetof(stl_facet, normal) == 0, "stl_facet.normal has correct offset");
+static_assert(offsetof(stl_facet, vertex) == 12, "stl_facet.vertex has correct offset");
+static_assert(offsetof(stl_facet, extra ) == 48, "stl_facet.extra has correct offset");
+static_assert(sizeof(stl_facet) >= SIZEOF_STL_FACET, "size of stl_facet incorrect");
+
+typedef enum {binary, ascii, inmemory} stl_type;
+
+struct stl_neighbors {
+  	stl_neighbors() { reset(); }
+  	void reset() {
+  		neighbor[0] = -1;
+  		neighbor[1] = -1;
+  		neighbor[2] = -1;
+  		which_vertex_not[0] = -1;
+  		which_vertex_not[1] = -1;
+  		which_vertex_not[2] = -1;
+  	}
+  	int num_neighbors() const { return 3 - ((this->neighbor[0] == -1) + (this->neighbor[1] == -1) + (this->neighbor[2] == -1)); }
+
+  	// Index of a neighbor facet.
+  	int   neighbor[3];
+  	// Index of an opposite vertex at the neighbor face.
+  	char  which_vertex_not[3];
+};
+
+struct stl_stats {
+    stl_stats() {}
+    void  reset_header(int size) {
+        header.clear();
+        header.resize(size +1);
+    }
+    std::vector<char>    header;
+    stl_type      type                      = (stl_type)0;
+    // Should always match the number of facets stored inside stl_file::facet_start.
+    uint32_t      number_of_facets          = 0;
+    // Bounding box.
+    stl_vertex    max                       = stl_vertex::Zero();
+    stl_vertex    min                       = stl_vertex::Zero();
+    stl_vertex    size                      = stl_vertex::Zero();
+    float         bounding_diameter         = 0.f;
+    float         shortest_edge             = 0.f;
+    // After repair, the volume shall always be positive.
+    float         volume                    = -1.f;
+    // Number of face edges connected to another face.
+    // Don't use this statistics after repair, use the connected_facets_1/2/3_edge instead!
+    int           connected_edges           = 0;
+    // Faces with >=1, >=2 and 3 edges connected to another face.
+    int           connected_facets_1_edge   = 0;
+    int           connected_facets_2_edge   = 0;
+    int           connected_facets_3_edge   = 0;
+    // Faces with 1, 2 and 3 open edges after exact chaining, but before repair.
+    int           facets_w_1_bad_edge       = 0;
+    int           facets_w_2_bad_edge       = 0;
+    int           facets_w_3_bad_edge       = 0;
+    // Number of faces read form an STL file.
+    int           original_num_facets       = 0;
+    // Number of edges connected one to another by snapping their end vertices.
+    int           edges_fixed               = 0;
+    // Number of faces removed because they were degenerated.
+    int           degenerate_facets         = 0;
+    // Total number of facets removed: Degenerate faces and unconnected faces.
+    int           facets_removed            = 0;
+    // Number of faces added by hole filling.
+    int           facets_added              = 0;
+    // Number of faces reversed because of negative volume or because one patch was connected to another patch with incompatible normals.
+    int           facets_reversed           = 0;
+    // Number of incompatible edges remaining after the patches were connected together and possibly their normals flipped.
+    int           backwards_edges           = 0;
+    // Number of triangles, which were flipped during the fixing process.
+    int           normals_fixed             = 0;
+    // Number of connected triangle patches.
+    int           number_of_parts           = 0;
+
+    void clear() { *this = stl_stats(); }
+};
+
+struct stl_file {
+	stl_file() {}
+
+	void clear() {
+		this->facet_start.clear();
+		this->neighbors_start.clear();
+        this->stats.clear();
+	}
+
+	size_t memsize() const {
+		return sizeof(*this) + sizeof(stl_facet) * facet_start.size() + sizeof(stl_neighbors) * neighbors_start.size();
+	}
+
+    char mw_data[256];
+	std::vector<stl_facet>     		facet_start;
+	std::vector<stl_neighbors> 		neighbors_start;
+	// Statistics
+	stl_stats     					stats;
+};
+
+struct FaceProperty
+{   // triangle face property
+    EnumFaceTypes type;
+    double area;
+    // stl_normal normal;
+
+    std::string to_string() const
+    {
+        std::string str;
+        // skip normal type facet to improve performance 
+        if (type > eNormal && type < eMaxNumFaceTypes) {
+            str += std::to_string(type);
+            if (area != 0.f)
+                str += " " + std::to_string(area);
+        }
+        return str;
+    }
+
+    void from_string(const std::string& str)
+    {
+        std::string val_str, area_str;
+        do {
+            if (str.empty())
+                break;
+
+            this->type = (EnumFaceTypes)std::atoi(str.c_str());
+            if (this->type <= eNormal || this->type >= eMaxNumFaceTypes)
+                break;
+
+            size_t type_end_pos = str.find(" ");
+            if (type_end_pos == std::string::npos) {
+                this->area = 0.f;
+                return;
+            }
+
+            area_str = str.substr(type_end_pos + 1);
+            if (!area_str.empty())
+                this->area = std::atof(area_str.c_str());
+            else
+                this->area = 0.f;
+            return;
+        } while (0);
+
+        this->type = eNormal;
+        this->area = 0.f;
+    }
+};
+
+struct indexed_triangle_set
+{
+    indexed_triangle_set(std::vector<stl_triangle_vertex_indices>    indices_,
+        std::vector<stl_vertex>                     vertices_) :indices(indices_), vertices(vertices_) {
+        properties.resize(indices_.size());
+    }
+    indexed_triangle_set() {}
+
+    void clear() { indices.clear(); vertices.clear(); properties.clear(); }
+
+    size_t memsize() const {
+        return sizeof(*this) + (sizeof(stl_triangle_vertex_indices) + sizeof(FaceProperty)) * indices.size() + sizeof(stl_vertex) * vertices.size();
+    }
+
+    std::vector<stl_triangle_vertex_indices>    indices;
+    std::vector<stl_vertex>                     vertices;
+    std::vector<FaceProperty>                   properties;
+
+    bool empty() const { return indices.empty() || vertices.empty(); }
+    stl_vertex get_vertex(int facet_idx, int vertex_idx) const{
+        return vertices[indices[facet_idx][vertex_idx]];
+    }
+    float facet_area(int facet_idx) const {
+        return std::abs((get_vertex(facet_idx, 0) - get_vertex(facet_idx, 1))
+            .cross(get_vertex(facet_idx, 0) - get_vertex(facet_idx, 2)).norm()) / 2;
+    }
+    FaceProperty& get_property(int face_idx) {
+        if (properties.size() != indices.size()) {
+            properties.clear();
+            properties.resize(indices.size());
+        }
+        return properties[face_idx];
+    }
+};
+
+extern bool stl_open(stl_file *stl, const char *file, ImportstlProgressFn stlFn = nullptr,int custom_header_length = 80);
+extern void stl_stats_out(stl_file *stl, FILE *file, char *input_file);
+extern bool stl_print_neighbors(stl_file *stl, char *file);
+extern bool stl_write_ascii(stl_file *stl, const char *file, const char *label);
+extern bool stl_write_binary(stl_file *stl, const char *file, const char *label);
+extern void stl_check_facets_exact(stl_file *stl);
+extern void stl_check_facets_nearby(stl_file *stl, float tolerance);
+extern void stl_remove_unconnected_facets(stl_file *stl);
+extern void stl_write_vertex(stl_file *stl, int facet, int vertex);
+extern void stl_write_facet(stl_file *stl, char *label, int facet);
+extern void stl_write_neighbor(stl_file *stl, int facet);
+extern bool stl_write_quad_object(stl_file *stl, char *file);
+extern void stl_verify_neighbors(stl_file *stl);
+extern void stl_fill_holes(stl_file *stl);
+extern void stl_fix_normal_directions(stl_file *stl);
+extern void stl_fix_normal_values(stl_file *stl);
+extern void stl_reverse_all_facets(stl_file *stl);
+extern void stl_translate(stl_file *stl, float x, float y, float z);
+extern void stl_translate_relative(stl_file *stl, float x, float y, float z);
+extern void stl_scale_versor(stl_file *stl, const stl_vertex &versor);
+inline void stl_scale(stl_file *stl, float factor) { stl_scale_versor(stl, stl_vertex(factor, factor, factor)); }
+extern void stl_rotate_x(stl_file *stl, float angle);
+extern void stl_rotate_y(stl_file *stl, float angle);
+extern void stl_rotate_z(stl_file *stl, float angle);
+extern void stl_mirror_xy(stl_file *stl);
+extern void stl_mirror_yz(stl_file *stl);
+extern void stl_mirror_xz(stl_file *stl);
+
+extern float get_area(stl_facet* facet);
+extern void stl_get_size(stl_file *stl);
+
+// the following function is not used
+/*
+template<typename T>
+extern void stl_transform(stl_file *stl, T *trafo3x4)
+{
+    Eigen::Matrix<T, 3, 3, Eigen::DontAlign> trafo3x3;
+    for (int i = 0; i < 3; ++i)
+    {
+        for (int j = 0; j < 3; ++j)
+        {
+            trafo3x3(i, j) = (i * 4) + j;
+        }
+    }
+    Eigen::Matrix<T, 3, 3, Eigen::DontAlign> r = trafo3x3.inverse().transpose();
+    for (uint32_t i_face = 0; i_face < stl->stats.number_of_facets; ++ i_face) {
+		stl_facet &face = stl->facet_start[i_face];
+		for (int i_vertex = 0; i_vertex < 3; ++ i_vertex) {
+			stl_vertex &v_dst = face.vertex[i_vertex];
+			stl_vertex  v_src = v_dst;
+			v_dst(0) = T(trafo3x4[0] * v_src(0) + trafo3x4[1] * v_src(1) + trafo3x4[2]  * v_src(2) + trafo3x4[3]);
+			v_dst(1) = T(trafo3x4[4] * v_src(0) + trafo3x4[5] * v_src(1) + trafo3x4[6]  * v_src(2) + trafo3x4[7]);
+			v_dst(2) = T(trafo3x4[8] * v_src(0) + trafo3x4[9] * v_src(1) + trafo3x4[10] * v_src(2) + trafo3x4[11]);
+		}
+        face.normal = (r * face.normal.template cast<T>()).template cast<float>().eval();
+    }
+
+	stl_get_size(stl);
+}
+*/
+
+template<typename T>
+inline void stl_transform(stl_file *stl, const Eigen::Transform<T, 3, Eigen::Affine, Eigen::DontAlign>& t)
+{
+    const Eigen::Matrix<T, 3, 3, Eigen::DontAlign> r = t.matrix().template block<3, 3>(0, 0).inverse().transpose();
+    for (size_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+		stl_facet &f = stl->facet_start[i];
+		for (size_t j = 0; j < 3; ++j)
+			f.vertex[j] = (t * f.vertex[j].template cast<T>()).template cast<float>().eval();
+		f.normal = (r * f.normal.template cast<T>()).template cast<float>().eval();
+	}
+
+	stl_get_size(stl);
+}
+
+template<typename T>
+inline void stl_transform(stl_file *stl, const Eigen::Matrix<T, 3, 3, Eigen::DontAlign>& m)
+{
+    const Eigen::Matrix<T, 3, 3, Eigen::DontAlign> r = m.inverse().transpose();
+    for (size_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+		stl_facet &f = stl->facet_start[i];
+		for (size_t j = 0; j < 3; ++j)
+			f.vertex[j] = (m * f.vertex[j].template cast<T>()).template cast<float>().eval();
+        f.normal = (r * f.normal.template cast<T>()).template cast<float>().eval();
+    }
+
+	stl_get_size(stl);
+}
+
+template<typename V>
+inline void its_translate(indexed_triangle_set &its, const V v)
+{
+  for (stl_vertex &v_dst : its.vertices)
+    v_dst += v;
+}
+
+template<typename T>
+inline void its_transform(indexed_triangle_set &its, T *trafo3x4)
+{
+	for (stl_vertex &v_dst : its.vertices) {
+		stl_vertex  v_src = v_dst;
+		v_dst(0) = T(trafo3x4[0] * v_src(0) + trafo3x4[1] * v_src(1) + trafo3x4[2]  * v_src(2) + trafo3x4[3]);
+		v_dst(1) = T(trafo3x4[4] * v_src(0) + trafo3x4[5] * v_src(1) + trafo3x4[6]  * v_src(2) + trafo3x4[7]);
+		v_dst(2) = T(trafo3x4[8] * v_src(0) + trafo3x4[9] * v_src(1) + trafo3x4[10] * v_src(2) + trafo3x4[11]);
+	}
+}
+
+template<typename T>
+inline void its_transform(indexed_triangle_set &its, const Eigen::Transform<T, 3, Eigen::Affine, Eigen::DontAlign>& t, bool fix_left_handed = false)
+{
+	//const Eigen::Matrix<double, 3, 3, Eigen::DontAlign> r = t.matrix().template block<3, 3>(0, 0);
+	for (stl_vertex &v : its.vertices)
+		v = (t * v.template cast<T>()).template cast<float>().eval();
+  if (fix_left_handed && t.matrix().block(0, 0, 3, 3).determinant() < 0.)
+    for (stl_triangle_vertex_indices &i : its.indices)
+      std::swap(i[0], i[1]);
+}
+
+template<typename T>
+inline void its_transform(indexed_triangle_set &its, const Eigen::Matrix<T, 3, 3, Eigen::DontAlign>& m, bool fix_left_handed = false)
+{
+  for (stl_vertex &v : its.vertices)
+		v = (m * v.template cast<T>()).template cast<float>().eval();
+  if (fix_left_handed && m.determinant() < 0.)
+    for (stl_triangle_vertex_indices &i : its.indices)
+      std::swap(i[0], i[1]);
+}
+
+extern void its_rotate_x(indexed_triangle_set &its, float angle);
+extern void its_rotate_y(indexed_triangle_set &its, float angle);
+extern void its_rotate_z(indexed_triangle_set &its, float angle);
+
+extern void stl_generate_shared_vertices(stl_file *stl, indexed_triangle_set &its);
+extern bool its_write_obj(const indexed_triangle_set &its, const char *file);
+extern bool its_write_off(const indexed_triangle_set &its, const char *file);
+extern bool its_write_vrml(const indexed_triangle_set &its, const char *file);
+
+extern bool stl_write_dxf(stl_file *stl, const char *file, char *label);
+inline void stl_calculate_normal(stl_normal &normal, stl_facet *facet) {
+  normal = (facet->vertex[1] - facet->vertex[0]).cross(facet->vertex[2] - facet->vertex[0]);
+}
+inline void stl_normalize_vector(stl_normal &normal) {
+  double length = normal.cast<double>().norm();
+  if (length < 0.000000000001)
+    normal = stl_normal::Zero();
+  else
+    normal *= float(1.0 / length);
+}
+extern void stl_calculate_volume(stl_file *stl);
+
+extern void stl_repair(stl_file *stl, bool fixall_flag, bool exact_flag, bool tolerance_flag, float tolerance, bool increment_flag, float increment, bool nearby_flag, int iterations, bool remove_unconnected_flag, bool fill_holes_flag, bool normal_directions_flag, bool normal_values_flag, bool reverse_all_flag, bool verbose_flag);
+
+extern void stl_allocate(stl_file *stl);
+extern void stl_read(stl_file *stl, int first_facet, bool first, ImportstlProgressFn stlFn = nullptr);
+extern void stl_facet_stats(stl_file *stl, stl_facet facet, bool &first);
+extern void stl_reallocate(stl_file *stl);
+extern void stl_add_facet(stl_file *stl, const stl_facet *new_facet);
+
+// Validate the mesh, assert on error.
+extern bool stl_validate(const stl_file *stl);
+extern bool stl_validate(const stl_file *stl, const indexed_triangle_set &its);
+
+#endif

deps_src/admesh/stl_io.cpp

@@ -0,0 +1,251 @@
+/*  ADMesh -- process triangulated solid meshes
+ *  Copyright (C) 1995, 1996  Anthony D. Martin <amartin@engr.csulb.edu>
+ *  Copyright (C) 2013, 2014  several contributors, see AUTHORS
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  Questions, comments, suggestions, etc to
+ *           https://github.com/admesh/admesh/issues
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <boost/log/trivial.hpp>
+#include <boost/nowide/cstdio.hpp>
+#include <boost/predef/other/endian.h>
+
+#include "stl.h"
+
+void stl_stats_out(stl_file *stl, FILE *file, char *input_file)
+{
+  	// This is here for Slic3r, without our config.h it won't use this part of the code anyway.
+#ifndef VERSION
+#define VERSION "unknown"
+#endif
+  	fprintf(file, "\n================= Results produced by ADMesh version " VERSION " ================\n");
+  	fprintf(file, "Input file         : %s\n", input_file);
+  	if (stl->stats.type == binary)
+    	fprintf(file, "File type          : Binary STL file\n");
+  	else
+    	fprintf(file, "File type          : ASCII STL file\n");
+  	fprintf(file, "Header             : %s\n", stl->stats.header.data());
+  	fprintf(file, "============== Size ==============\n");
+  	fprintf(file, "Min X = % f, Max X = % f\n", stl->stats.min(0), stl->stats.max(0));
+  	fprintf(file, "Min Y = % f, Max Y = % f\n", stl->stats.min(1), stl->stats.max(1));
+  	fprintf(file, "Min Z = % f, Max Z = % f\n", stl->stats.min(2), stl->stats.max(2));
+  	fprintf(file, "========= Facet Status ========== Original ============ Final ====\n");
+  	fprintf(file, "Number of facets                 : %5d               %5d\n", stl->stats.original_num_facets, stl->stats.number_of_facets);
+  	fprintf(file, "Facets with 1 disconnected edge  : %5d               %5d\n", 
+  		stl->stats.facets_w_1_bad_edge, stl->stats.connected_facets_2_edge - stl->stats.connected_facets_3_edge);
+  	fprintf(file, "Facets with 2 disconnected edges : %5d               %5d\n",
+    	stl->stats.facets_w_2_bad_edge, stl->stats.connected_facets_1_edge - stl->stats.connected_facets_2_edge);
+  	fprintf(file, "Facets with 3 disconnected edges : %5d               %5d\n",
+        stl->stats.facets_w_3_bad_edge, stl->stats.number_of_facets - stl->stats.connected_facets_1_edge);
+  	fprintf(file, "Total disconnected facets        : %5d               %5d\n",
+		stl->stats.facets_w_1_bad_edge + stl->stats.facets_w_2_bad_edge + stl->stats.facets_w_3_bad_edge, stl->stats.number_of_facets - stl->stats.connected_facets_3_edge);
+  	fprintf(file, "=== Processing Statistics ===     ===== Other Statistics =====\n");
+  	fprintf(file, "Number of parts       : %5d        Volume   : %f\n", stl->stats.number_of_parts, stl->stats.volume);
+  	fprintf(file, "Degenerate facets     : %5d\n", stl->stats.degenerate_facets);
+  	fprintf(file, "Edges fixed           : %5d\n", stl->stats.edges_fixed);
+  	fprintf(file, "Facets removed        : %5d\n", stl->stats.facets_removed);
+  	fprintf(file, "Facets added          : %5d\n", stl->stats.facets_added);
+  	fprintf(file, "Facets reversed       : %5d\n", stl->stats.facets_reversed);
+  	fprintf(file, "Backwards edges       : %5d\n", stl->stats.backwards_edges);
+  	fprintf(file, "Normals fixed         : %5d\n", stl->stats.normals_fixed);
+}
+
+bool stl_write_ascii(stl_file *stl, const char *file, const char *label)
+{
+	FILE *fp = boost::nowide::fopen(file, "w");
+  	if (fp == nullptr) {
+		BOOST_LOG_TRIVIAL(error) << "stl_write_ascii: Couldn't open " << file << " for writing";
+    	return false;
+  	}
+
+	fprintf(fp, "solid  %s\n", label);
+
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+		fprintf(fp, "  facet normal % .8E % .8E % .8E\n", stl->facet_start[i].normal(0), stl->facet_start[i].normal(1), stl->facet_start[i].normal(2));
+		fprintf(fp, "    outer loop\n");
+		fprintf(fp, "      vertex % .8E % .8E % .8E\n", stl->facet_start[i].vertex[0](0), stl->facet_start[i].vertex[0](1), stl->facet_start[i].vertex[0](2));
+		fprintf(fp, "      vertex % .8E % .8E % .8E\n", stl->facet_start[i].vertex[1](0), stl->facet_start[i].vertex[1](1), stl->facet_start[i].vertex[1](2));
+		fprintf(fp, "      vertex % .8E % .8E % .8E\n", stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1), stl->facet_start[i].vertex[2](2));
+		fprintf(fp, "    endloop\n");
+		fprintf(fp, "  endfacet\n");
+	}
+
+  	fprintf(fp, "endsolid  %s\n", label);
+  	fclose(fp);
+  	return true;
+}
+
+bool stl_print_neighbors(stl_file *stl, char *file)
+{
+	FILE *fp = boost::nowide::fopen(file, "w");
+	if (fp == nullptr) {
+		BOOST_LOG_TRIVIAL(error) << "stl_print_neighbors: Couldn't open " << file << " for writing";
+    	return false;
+  	}
+
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+    	fprintf(fp, "%d, %d,%d, %d,%d, %d,%d\n",
+            i,
+            stl->neighbors_start[i].neighbor[0],
+            (int)stl->neighbors_start[i].which_vertex_not[0],
+            stl->neighbors_start[i].neighbor[1],
+            (int)stl->neighbors_start[i].which_vertex_not[1],
+            stl->neighbors_start[i].neighbor[2],
+            (int)stl->neighbors_start[i].which_vertex_not[2]);
+  	}
+  	fclose(fp);
+  	return true;
+}
+
+#if BOOST_ENDIAN_BIG_BYTE
+// Swap a buffer of 32bit data from little endian to big endian and vice versa.
+void stl_internal_reverse_quads(char *buf, size_t cnt)
+{
+	for (size_t i = 0; i < cnt; i += 4) {
+		std::swap(buf[i], buf[i+3]);
+		std::swap(buf[i+1], buf[i+2]);
+	}
+}
+#endif
+
+bool stl_write_binary(stl_file *stl, const char *file, const char *label)
+{
+	FILE *fp = boost::nowide::fopen(file, "wb");
+	if (fp == nullptr) {
+		BOOST_LOG_TRIVIAL(error) << "stl_write_binary: Couldn't open " << file << " for writing";
+    	return false;
+  	}
+
+	fprintf(fp, "%s", label);
+	for (size_t i = strlen(label); i < LABEL_SIZE; ++ i)
+		putc(0, fp);
+
+#if !defined(SEEK_SET)
+	#define SEEK_SET 0
+#endif
+	fseek(fp, LABEL_SIZE, SEEK_SET);
+#if BOOST_ENDIAN_LITTLE_BYTE
+	fwrite(&stl->stats.number_of_facets, 4, 1, fp);
+	for (const stl_facet &facet : stl->facet_start)
+	  	fwrite(&facet, SIZEOF_STL_FACET, 1, fp);
+#else /* BOOST_ENDIAN_LITTLE_BYTE */
+	char buffer[50];
+	// Convert the number of facets to little endian.
+	memcpy(buffer, &stl->stats.number_of_facets, 4);
+	stl_internal_reverse_quads(buffer, 4);
+	fwrite(buffer, 4, 1, fp);
+	for (const stl_facet &facet : stl->facet_start) {
+		memcpy(buffer, &facet, 50);
+		// Convert to little endian.
+		stl_internal_reverse_quads(buffer, 48);
+		fwrite(buffer, SIZEOF_STL_FACET, 1, fp);
+	}
+#endif /* BOOST_ENDIAN_LITTLE_BYTE */
+	fclose(fp);
+	return true;
+}
+
+void stl_write_vertex(stl_file *stl, int facet, int vertex)
+{
+  	printf("  vertex %d/%d % .8E % .8E % .8E\n", vertex, facet,
+         stl->facet_start[facet].vertex[vertex](0),
+         stl->facet_start[facet].vertex[vertex](1),
+         stl->facet_start[facet].vertex[vertex](2));
+}
+
+void stl_write_facet(stl_file *stl, char *label, int facet)
+{
+	printf("facet (%d)/ %s\n", facet, label);
+	stl_write_vertex(stl, facet, 0);
+	stl_write_vertex(stl, facet, 1);
+	stl_write_vertex(stl, facet, 2);
+}
+
+void stl_write_neighbor(stl_file *stl, int facet)
+{
+	printf("Neighbors %d: %d, %d, %d ;  %d, %d, %d\n", facet,
+		stl->neighbors_start[facet].neighbor[0],
+		stl->neighbors_start[facet].neighbor[1],
+		stl->neighbors_start[facet].neighbor[2],
+		stl->neighbors_start[facet].which_vertex_not[0],
+		stl->neighbors_start[facet].which_vertex_not[1],
+		stl->neighbors_start[facet].which_vertex_not[2]);
+}
+
+bool stl_write_quad_object(stl_file *stl, char *file)
+{
+	stl_vertex connect_color = stl_vertex::Zero();
+	stl_vertex uncon_1_color = stl_vertex::Zero();
+	stl_vertex uncon_2_color = stl_vertex::Zero();
+	stl_vertex uncon_3_color = stl_vertex::Zero();
+	stl_vertex color;
+
+	FILE *fp = boost::nowide::fopen(file, "w");
+	if (fp == nullptr) {
+		BOOST_LOG_TRIVIAL(error) << "stl_write_quad_object: Couldn't open " << file << " for writing";
+		return false;
+	}
+
+  	fprintf(fp, "CQUAD\n");
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+  		switch (stl->neighbors_start[i].num_neighbors()) {
+    		case 0:
+    		default: color = uncon_3_color; break;
+    		case 1:  color = uncon_2_color; break;
+    		case 2:  color = uncon_1_color; break;
+  		case 3:  color = connect_color; break;
+	    }
+	    fprintf(fp, "%f %f %f    %1.1f %1.1f %1.1f 1\n", stl->facet_start[i].vertex[0](0), stl->facet_start[i].vertex[0](1), stl->facet_start[i].vertex[0](2), color(0), color(1), color(2));
+    	fprintf(fp, "%f %f %f    %1.1f %1.1f %1.1f 1\n", stl->facet_start[i].vertex[1](0), stl->facet_start[i].vertex[1](1), stl->facet_start[i].vertex[1](2), color(0), color(1), color(2));
+    	fprintf(fp, "%f %f %f    %1.1f %1.1f %1.1f 1\n", stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1), stl->facet_start[i].vertex[2](2), color(0), color(1), color(2));
+    	fprintf(fp, "%f %f %f    %1.1f %1.1f %1.1f 1\n", stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1), stl->facet_start[i].vertex[2](2), color(0), color(1), color(2));
+  }
+  fclose(fp);
+  return true;
+}
+
+bool stl_write_dxf(stl_file *stl, const char *file, char *label) 
+{
+	FILE *fp = boost::nowide::fopen(file, "w");
+	if (fp == nullptr) {
+		BOOST_LOG_TRIVIAL(error) << "stl_write_quad_object: Couldn't open " << file << " for writing";
+    	return false;
+  	}
+
+	fprintf(fp, "999\n%s\n", label);
+	fprintf(fp, "0\nSECTION\n2\nHEADER\n0\nENDSEC\n");
+	fprintf(fp, "0\nSECTION\n2\nTABLES\n0\nTABLE\n2\nLAYER\n70\n1\n\
+	0\nLAYER\n2\n0\n70\n0\n62\n7\n6\nCONTINUOUS\n0\nENDTAB\n0\nENDSEC\n");
+	fprintf(fp, "0\nSECTION\n2\nBLOCKS\n0\nENDSEC\n");
+
+	fprintf(fp, "0\nSECTION\n2\nENTITIES\n");
+
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+		fprintf(fp, "0\n3DFACE\n8\n0\n");
+		fprintf(fp, "10\n%f\n20\n%f\n30\n%f\n", stl->facet_start[i].vertex[0](0), stl->facet_start[i].vertex[0](1), stl->facet_start[i].vertex[0](2));
+		fprintf(fp, "11\n%f\n21\n%f\n31\n%f\n", stl->facet_start[i].vertex[1](0), stl->facet_start[i].vertex[1](1), stl->facet_start[i].vertex[1](2));
+		fprintf(fp, "12\n%f\n22\n%f\n32\n%f\n", stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1), stl->facet_start[i].vertex[2](2));
+		fprintf(fp, "13\n%f\n23\n%f\n33\n%f\n", stl->facet_start[i].vertex[2](0), stl->facet_start[i].vertex[2](1), stl->facet_start[i].vertex[2](2));
+	}
+
+  	fprintf(fp, "0\nENDSEC\n0\nEOF\n");
+  	fclose(fp);
+  	return true;
+}

deps_src/admesh/stlinit.cpp

@@ -0,0 +1,354 @@
+/*  ADMesh -- process triangulated solid meshes
+ *  Copyright (C) 1995, 1996  Anthony D. Martin <amartin@engr.csulb.edu>
+ *  Copyright (C) 2013, 2014  several contributors, see AUTHORS
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  Questions, comments, suggestions, etc to
+ *           https://github.com/admesh/admesh/issues
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <assert.h>
+
+#include <boost/log/trivial.hpp>
+#include <boost/nowide/cstdio.hpp>
+#include <boost/predef/other/endian.h>
+
+#include "stl.h"
+#include "libslic3r/Format/STL.hpp"
+
+#include "libslic3r/LocalesUtils.hpp"
+
+#ifndef SEEK_SET
+#error "SEEK_SET not defined"
+#endif
+
+#if BOOST_ENDIAN_BIG_BYTE
+extern void stl_internal_reverse_quads(char *buf, size_t cnt);
+#endif /* BOOST_ENDIAN_BIG_BYTE */
+
+const int LOAD_STL_UNIT_NUM           = 5;
+static std::string model_id           = "";
+static std::string country_code       = "";
+
+static FILE *stl_open_count_facets(stl_file *stl, const char *file, unsigned int custom_header_length)
+{
+  	// Open the file in binary mode first.
+  	FILE *fp = boost::nowide::fopen(file, "rb");
+  	if (fp == nullptr) {
+		BOOST_LOG_TRIVIAL(error) << "stl_open_count_facets: Couldn't open " << file << " for reading";
+    	return nullptr;
+  	}
+  	// Find size of file.
+  	fseek(fp, 0, SEEK_END);
+  	long file_size = ftell(fp);
+
+  	// Check for binary or ASCII file.
+    int header_size = custom_header_length + NUM_FACET_SIZE;
+    fseek(fp, header_size, SEEK_SET);
+	unsigned char chtest[128];
+  	if (! fread(chtest, sizeof(chtest), 1, fp)) {
+		BOOST_LOG_TRIVIAL(error) << "stl_open_count_facets: The input is an empty file: " << file;
+    	fclose(fp);
+    	return nullptr;
+  	}
+  	stl->stats.type = ascii;
+  	for (size_t s = 0; s < sizeof(chtest); s++) {
+    	if (chtest[s] > 127) {
+      		stl->stats.type = binary;
+      		break;
+    	}
+  	}
+  	rewind(fp);
+
+  	uint32_t num_facets = 0;
+
+  	// Get the header and the number of facets in the .STL file.
+  	// If the .STL file is binary, then do the following:
+  	if (stl->stats.type == binary) {
+    	// Test if the STL file has the right size.
+        if (((file_size - header_size) % SIZEOF_STL_FACET != 0) || (file_size < STL_MIN_FILE_SIZE)) {
+			BOOST_LOG_TRIVIAL(error) << "stl_open_count_facets: The file " << file << " has the wrong size.";
+      		fclose(fp);
+      		return nullptr;
+    	}
+        num_facets = (file_size - header_size) / SIZEOF_STL_FACET;
+
+    	// Read the header.
+        if (fread(stl->stats.header.data(), custom_header_length, 1, fp) > custom_header_length -1)
+            stl->stats.header[custom_header_length] = '\0';
+
+    	// Read the int following the header.  This should contain # of facets.
+	  	uint32_t header_num_facets;
+    	bool header_num_faces_read = fread(&header_num_facets, sizeof(uint32_t), 1, fp) != 0;
+#if BOOST_ENDIAN_BIG_BYTE
+    	// Convert from little endian to big endian.
+    	stl_internal_reverse_quads((char*)&header_num_facets, 4);
+#endif /* BOOST_ENDIAN_BIG_BYTE */
+    	if (! header_num_faces_read || num_facets != header_num_facets)
+			BOOST_LOG_TRIVIAL(info) << "stl_open_count_facets: Warning: File size doesn't match number of facets in the header: " << file;
+  	}
+  	// Otherwise, if the .STL file is ASCII, then do the following:
+  	else
+  	{
+    	// Reopen the file in text mode (for getting correct newlines on Windows)
+    	// fix to silence a warning about unused return value.
+    	// obviously if it fails we have problems....
+    	fp = boost::nowide::freopen(file, "r", fp);
+
+		// do another null check to be safe
+    	if (fp == nullptr) {
+			BOOST_LOG_TRIVIAL(error) << "stl_open_count_facets: Couldn't open " << file << " for reading";
+      		return nullptr;
+    	}
+    
+    	// Find the number of facets.
+		char linebuf[100];
+		int num_lines = 1;
+		while (fgets(linebuf, 100, fp) != nullptr) {
+		    // Don't count short lines.
+		    if (strlen(linebuf) <= 4)
+		    	continue;
+		    // Skip solid/endsolid lines as broken STL file generators may put several of them.
+		    if (strncmp(linebuf, "solid", 5) == 0 || strncmp(linebuf, "endsolid", 8) == 0)
+		    	continue;
+		    ++ num_lines;
+		}
+
+    	rewind(fp);
+    
+    	// Get the header.
+		int i = 0;
+    	for (; i < custom_header_length && (stl->stats.header[i] = getc(fp)) != '\n'; ++ i) ;
+    	stl->stats.header[i] = '\0'; // Lose the '\n'
+        stl->stats.header[custom_header_length] = '\0';
+
+    	num_facets = num_lines / ASCII_LINES_PER_FACET;
+  	}
+
+  	stl->stats.number_of_facets += num_facets;
+  	stl->stats.original_num_facets = stl->stats.number_of_facets;
+  	return fp;
+}
+
+/* Reads the contents of the file pointed to by fp into the stl structure,
+   starting at facet first_facet.  The second argument says if it's our first
+   time running this for the stl and therefore we should reset our max and min stats. */
+static bool stl_read(stl_file *stl, FILE *fp, int first_facet, bool first, ImportstlProgressFn stlFn, int custom_header_length)
+{
+    if (stl->stats.type == binary) {
+        int header_size = custom_header_length + NUM_FACET_SIZE;
+        fseek(fp, header_size, SEEK_SET);
+        model_id = "";
+        country_code = "";
+    }
+	else {
+        rewind(fp);
+        try{
+            char solid_name[256];
+            int res_solid = fscanf(fp, " solid %[^\n]", solid_name);
+            if (res_solid == 1) {
+                char* mw_position = strstr(solid_name, "MW");
+                if (mw_position != NULL) {
+                    // Extract the value after "MW"
+                    char version_str[16];
+                    char model_id_str[128]; 
+                    char country_code_str[16];
+                    int num_values = sscanf(mw_position + 3, "%s %s %s", version_str, model_id_str, country_code_str);
+                    if (num_values == 3) {
+                        if (strcmp(version_str, "1.0") == 0) {
+                            model_id = model_id_str;
+                            country_code = country_code_str;
+                        }
+                    }
+                    else {
+                        model_id = "";
+                        country_code = "";
+                    }
+                }
+                else {
+                    model_id = "";  // No MW format found
+                    country_code = "";
+                }
+            }
+        }
+        catch (...){
+        }
+        
+        rewind(fp);
+	}
+    	
+
+  	char normal_buf[3][32];
+
+	uint32_t facets_num = stl->stats.number_of_facets;
+	uint32_t unit = facets_num / LOAD_STL_UNIT_NUM + 1;
+    for (uint32_t i = first_facet; i < facets_num; ++ i) {
+        if ((i % unit) == 0) {
+            bool cb_cancel = false;
+            if (stlFn) {
+                stlFn(i, facets_num, cb_cancel, model_id, country_code);
+                if (cb_cancel)
+                    return false;
+            }
+        }
+
+  	  	stl_facet facet;
+
+    	if (stl->stats.type == binary) {
+  
+
+      		// Read a single facet from a binary .STL file. We assume little-endian architecture!
+      		if (fread(&facet, 1, SIZEOF_STL_FACET, fp) != SIZEOF_STL_FACET)
+      			return false;
+
+
+#if BOOST_ENDIAN_BIG_BYTE
+      		// Convert the loaded little endian data to big endian.
+      		stl_internal_reverse_quads((char*)&facet, 48);
+#endif /* BOOST_ENDIAN_BIG_BYTE */
+    	} else {
+			// Read a single facet from an ASCII .STL file
+			// skip solid/endsolid
+			// (in this order, otherwise it won't work when they are paired in the middle of a file)
+            [[maybe_unused]] auto unused_result = fscanf(fp, " endsolid%*[^\n]\n");
+            unused_result = fscanf(fp, " solid%*[^\n]\n");  // name might contain spaces so %*s doesn't work and it also can be empty (just "solid")
+			// Leading space in the fscanf format skips all leading white spaces including numerous new lines and tabs.
+			int res_normal     = fscanf(fp, " facet normal %31s %31s %31s", normal_buf[0], normal_buf[1], normal_buf[2]);
+			assert(res_normal == 3);
+			int res_outer_loop = fscanf(fp, " outer loop");
+			assert(res_outer_loop == 0);
+			int res_vertex1    = fscanf(fp, " vertex %f %f %f", &facet.vertex[0](0), &facet.vertex[0](1), &facet.vertex[0](2));
+			assert(res_vertex1 == 3);
+			int res_vertex2    = fscanf(fp, " vertex %f %f %f", &facet.vertex[1](0), &facet.vertex[1](1), &facet.vertex[1](2));
+			assert(res_vertex2 == 3);
+			// Trailing whitespace is there to eat all whitespaces and empty lines up to the next non-whitespace.
+			int res_vertex3    = fscanf(fp, " vertex %f %f %f ", &facet.vertex[2](0), &facet.vertex[2](1), &facet.vertex[2](2));
+			assert(res_vertex3 == 3);
+			// Some G-code generators tend to produce text after "endloop" and "endfacet". Just ignore it.
+			char buf[2048];
+            [[maybe_unused]] auto unused_result2 = fgets(buf, 2047, fp);
+			bool endloop_ok = strncmp(buf, "endloop", 7) == 0 && (buf[7] == '\r' || buf[7] == '\n' || buf[7] == ' ' || buf[7] == '\t');
+			assert(endloop_ok);
+			// Skip the trailing whitespaces and empty lines.
+            unused_result = fscanf(fp, " ");
+            unused_result2 = fgets(buf, 2047, fp);
+			bool endfacet_ok = strncmp(buf, "endfacet", 8) == 0 && (buf[8] == '\r' || buf[8] == '\n' || buf[8] == ' ' || buf[8] == '\t');
+			assert(endfacet_ok);
+			if (res_normal != 3 || res_outer_loop != 0 || res_vertex1 != 3 || res_vertex2 != 3 || res_vertex3 != 3 || ! endloop_ok || ! endfacet_ok) {
+				BOOST_LOG_TRIVIAL(error) << "Something is syntactically very wrong with this ASCII STL! ";
+				return false;
+			}
+
+			// The facet normal has been parsed as a single string as to workaround for not a numbers in the normal definition.
+			if (sscanf(normal_buf[0], "%f", &facet.normal(0)) != 1 ||
+			    sscanf(normal_buf[1], "%f", &facet.normal(1)) != 1 ||
+			    sscanf(normal_buf[2], "%f", &facet.normal(2)) != 1) {
+			    // Normal was mangled. Maybe denormals or "not a number" were stored?
+			  	// Just reset the normal and silently ignore it.
+			  	memset(&facet.normal, 0, sizeof(facet.normal));
+			}
+		}
+
+#if 0
+		// Report close to zero vertex coordinates. Due to the nature of the floating point numbers,
+		// close to zero values may be represented with singificantly higher precision than the rest of the vertices.
+		// It may be worth to round these numbers to zero during loading to reduce the number of errors reported
+		// during the STL import.
+		for (size_t j = 0; j < 3; ++ j) {
+		if (facet.vertex[j](0) > -1e-12f && facet.vertex[j](0) < 1e-12f)
+		    printf("stl_read: facet %d(0) = %e\r\n", j, facet.vertex[j](0));
+		if (facet.vertex[j](1) > -1e-12f && facet.vertex[j](1) < 1e-12f)
+		    printf("stl_read: facet %d(1) = %e\r\n", j, facet.vertex[j](1));
+		if (facet.vertex[j](2) > -1e-12f && facet.vertex[j](2) < 1e-12f)
+		    printf("stl_read: facet %d(2) = %e\r\n", j, facet.vertex[j](2));
+		}
+#endif
+
+		// Write the facet into memory if none of facet vertices is NAN.
+		bool someone_is_nan = false;
+		for (size_t j = 0; j < 3; ++j) {
+			if (isnan(facet.vertex[j](0)) || isnan(facet.vertex[j](1)) || isnan(facet.vertex[j](2))) { 
+				someone_is_nan = true;
+				break; 
+			}
+		}
+		if(someone_is_nan)
+            continue;
+
+		stl->facet_start[i] = facet;
+		stl_facet_stats(stl, facet, first);
+  	}
+
+  	stl->stats.size = stl->stats.max - stl->stats.min;
+  	stl->stats.bounding_diameter = stl->stats.size.norm();
+  	return true;
+}
+
+bool stl_open(stl_file *stl, const char *file, ImportstlProgressFn stlFn, int custom_header_length)
+{
+    if (custom_header_length < LABEL_SIZE) { 
+        custom_header_length = LABEL_SIZE;
+    }
+    Slic3r::CNumericLocalesSetter locales_setter;
+	stl->clear();
+    stl->stats.reset_header(custom_header_length);
+    FILE *fp = stl_open_count_facets(stl, file, custom_header_length);
+	if (fp == nullptr)
+		return false;
+	stl_allocate(stl);
+    bool result = stl_read(stl, fp, 0, true, stlFn, custom_header_length);
+  	fclose(fp);
+  	return result;
+}
+
+void stl_allocate(stl_file *stl)
+{
+  	//  Allocate memory for the entire .STL file.
+  	stl->facet_start.assign(stl->stats.number_of_facets, stl_facet());
+  	// Allocate memory for the neighbors list.
+  	stl->neighbors_start.assign(stl->stats.number_of_facets, stl_neighbors());
+}
+
+void stl_reallocate(stl_file *stl)
+{
+	stl->facet_start.resize(stl->stats.number_of_facets);
+	stl->neighbors_start.resize(stl->stats.number_of_facets);
+}
+
+void stl_facet_stats(stl_file *stl, stl_facet facet, bool &first)
+{
+	// While we are going through all of the facets, let's find the
+	// maximum and minimum values for x, y, and z
+
+	if (first) {
+		// Initialize the max and min values the first time through
+		stl->stats.min = facet.vertex[0];
+		stl->stats.max = facet.vertex[0];
+		stl_vertex diff = (facet.vertex[1] - facet.vertex[0]).cwiseAbs();
+		stl->stats.shortest_edge = std::max(diff(0), std::max(diff(1), diff(2)));
+		first = false;
+	}
+
+	// Now find the max and min values.
+	for (size_t i = 0; i < 3; ++ i) {
+		stl->stats.min = stl->stats.min.cwiseMin(facet.vertex[i]);
+		stl->stats.max = stl->stats.max.cwiseMax(facet.vertex[i]);
+	}
+}

deps_src/admesh/util.cpp

@@ -0,0 +1,399 @@
+/*  ADMesh -- process triangulated solid meshes
+ *  Copyright (C) 1995, 1996  Anthony D. Martin <amartin@engr.csulb.edu>
+ *  Copyright (C) 2013, 2014  several contributors, see AUTHORS
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  Questions, comments, suggestions, etc to
+ *           https://github.com/admesh/admesh/issues
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include <boost/log/trivial.hpp>
+
+#include "stl.h"
+
+void stl_verify_neighbors(stl_file *stl)
+{
+	stl->stats.backwards_edges = 0;
+
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+		for (int j = 0; j < 3; ++ j) {
+			struct stl_edge {
+				stl_vertex p1;
+				stl_vertex p2;
+				int        facet_number;
+			};
+			stl_edge edge_a;
+			edge_a.p1 = stl->facet_start[i].vertex[j];
+			edge_a.p2 = stl->facet_start[i].vertex[(j + 1) % 3];
+			int neighbor = stl->neighbors_start[i].neighbor[j];
+			if (neighbor == -1)
+				continue; // this edge has no neighbor... Continue.
+			int vnot = stl->neighbors_start[i].which_vertex_not[j];
+			stl_edge edge_b;
+			if (vnot < 3) {
+				edge_b.p1 = stl->facet_start[neighbor].vertex[(vnot + 2) % 3];
+				edge_b.p2 = stl->facet_start[neighbor].vertex[(vnot + 1) % 3];
+			} else {
+				stl->stats.backwards_edges += 1;
+				edge_b.p1 = stl->facet_start[neighbor].vertex[(vnot + 1) % 3];
+				edge_b.p2 = stl->facet_start[neighbor].vertex[(vnot + 2) % 3];
+			}
+			if (edge_a.p1 != edge_b.p1 || edge_a.p2 != edge_b.p2) {
+				// These edges should match but they don't.  Print results.
+				BOOST_LOG_TRIVIAL(info) << "edge " << j << " of facet " << i << " doesn't match edge " << (vnot + 1) << " of facet " << neighbor;
+				stl_write_facet(stl, (char*)"first facet", i);
+				stl_write_facet(stl, (char*)"second facet", neighbor);
+			}
+		}
+	}
+}
+
+void stl_translate(stl_file *stl, float x, float y, float z)
+{
+	stl_vertex new_min(x, y, z);
+	stl_vertex shift = new_min - stl->stats.min;
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+		for (int j = 0; j < 3; ++ j)
+	  		stl->facet_start[i].vertex[j] += shift;
+	stl->stats.min = new_min;
+	stl->stats.max += shift;
+}
+
+/* Translates the stl by x,y,z, relatively from wherever it is currently */
+void stl_translate_relative(stl_file *stl, float x, float y, float z)
+{
+	stl_vertex shift(x, y, z);
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+		for (int j = 0; j < 3; ++ j)
+	  		stl->facet_start[i].vertex[j] += shift;
+	stl->stats.min += shift;
+	stl->stats.max += shift;
+}
+
+void stl_scale_versor(stl_file *stl, const stl_vertex &versor)
+{
+	// Scale extents.
+	auto s = versor.array();
+	stl->stats.min.array() *= s;
+	stl->stats.max.array() *= s;
+	// Scale size.
+	stl->stats.size.array() *= s;
+	// Scale volume.
+	if (stl->stats.volume > 0.0)
+		stl->stats.volume *= versor(0) * versor(1) * versor(2);
+	// Scale the mesh.
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+		for (int j = 0; j < 3; ++ j)
+	  		stl->facet_start[i].vertex[j].array() *= s;
+}
+
+static void calculate_normals(stl_file *stl) 
+{
+	stl_normal normal;
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+		stl_calculate_normal(normal, &stl->facet_start[i]);
+		stl_normalize_vector(normal);
+		stl->facet_start[i].normal = normal;
+	}
+}
+
+static inline void rotate_point_2d(float &x, float &y, const double c, const double s)
+{
+	double xold = x;
+	double yold = y;
+	x = float(c * xold - s * yold);
+	y = float(s * xold + c * yold);
+}
+
+void stl_rotate_x(stl_file *stl, float angle)
+{
+	double radian_angle = (angle / 180.0) * M_PI;
+	double c = cos(radian_angle);
+	double s = sin(radian_angle);
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+    	for (int j = 0; j < 3; ++ j)
+      		rotate_point_2d(stl->facet_start[i].vertex[j](1), stl->facet_start[i].vertex[j](2), c, s);
+  	stl_get_size(stl);
+  	calculate_normals(stl);
+}
+
+void stl_rotate_y(stl_file *stl, float angle)
+{
+	double radian_angle = (angle / 180.0) * M_PI;
+	double c = cos(radian_angle);
+	double s = sin(radian_angle);
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+    	for (int j = 0; j < 3; ++ j)
+			rotate_point_2d(stl->facet_start[i].vertex[j](2), stl->facet_start[i].vertex[j](0), c, s);
+  	stl_get_size(stl);
+  	calculate_normals(stl);
+}
+
+void stl_rotate_z(stl_file *stl, float angle)
+{
+	double radian_angle = (angle / 180.0) * M_PI;
+	double c = cos(radian_angle);
+	double s = sin(radian_angle);
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+    	for (int j = 0; j < 3; ++ j)
+      		rotate_point_2d(stl->facet_start[i].vertex[j](0), stl->facet_start[i].vertex[j](1), c, s);
+  	stl_get_size(stl);
+  	calculate_normals(stl);
+}
+
+void its_rotate_x(indexed_triangle_set &its, float angle)
+{
+	double radian_angle = (angle / 180.0) * M_PI;
+	double c = cos(radian_angle);
+	double s = sin(radian_angle);
+	for (stl_vertex &v : its.vertices)
+		rotate_point_2d(v(1), v(2), c, s);
+}
+
+void its_rotate_y(indexed_triangle_set& its, float angle)
+{
+	double radian_angle = (angle / 180.0) * M_PI;
+	double c = cos(radian_angle);
+	double s = sin(radian_angle);
+	for (stl_vertex& v : its.vertices)
+		rotate_point_2d(v(2), v(0), c, s);
+}
+
+void its_rotate_z(indexed_triangle_set& its, float angle)
+{
+	double radian_angle = (angle / 180.0) * M_PI;
+	double c = cos(radian_angle);
+	double s = sin(radian_angle);
+	for (stl_vertex& v : its.vertices)
+		rotate_point_2d(v(0), v(1), c, s);
+}
+
+void stl_get_size(stl_file *stl)
+{
+  	if (stl->stats.number_of_facets == 0)
+  		return;
+  	stl->stats.min = stl->facet_start[0].vertex[0];
+  	stl->stats.max = stl->stats.min;
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+  		const stl_facet &face = stl->facet_start[i];
+    	for (int j = 0; j < 3; ++ j) {
+      		stl->stats.min = stl->stats.min.cwiseMin(face.vertex[j]);
+      		stl->stats.max = stl->stats.max.cwiseMax(face.vertex[j]);
+    	}
+  	}
+  	stl->stats.size = stl->stats.max - stl->stats.min;
+  	stl->stats.bounding_diameter = stl->stats.size.norm();
+}
+
+void stl_mirror_xy(stl_file *stl)
+{
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+    	for (int j = 0; j < 3; ++ j)
+      		stl->facet_start[i].vertex[j](2) *= -1.0;
+	float temp_size = stl->stats.min(2);
+	stl->stats.min(2) = stl->stats.max(2);
+	stl->stats.max(2) = temp_size;
+	stl->stats.min(2) *= -1.0;
+	stl->stats.max(2) *= -1.0;
+	stl_reverse_all_facets(stl);
+	stl->stats.facets_reversed -= stl->stats.number_of_facets;  /* for not altering stats */
+}
+
+void stl_mirror_yz(stl_file *stl)
+{
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+    	for (int j = 0; j < 3; j++)
+      		stl->facet_start[i].vertex[j](0) *= -1.0;
+	float temp_size = stl->stats.min(0);
+	stl->stats.min(0) = stl->stats.max(0);
+	stl->stats.max(0) = temp_size;
+	stl->stats.min(0) *= -1.0;
+	stl->stats.max(0) *= -1.0;
+	stl_reverse_all_facets(stl);
+	stl->stats.facets_reversed -= stl->stats.number_of_facets;  /* for not altering stats */
+}
+
+void stl_mirror_xz(stl_file *stl)
+{
+	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i)
+		for (int j = 0; j < 3; ++ j)
+			stl->facet_start[i].vertex[j](1) *= -1.0;
+	float temp_size = stl->stats.min(1);
+	stl->stats.min(1) = stl->stats.max(1);
+	stl->stats.max(1) = temp_size;
+	stl->stats.min(1) *= -1.0;
+	stl->stats.max(1) *= -1.0;
+	stl_reverse_all_facets(stl);
+	stl->stats.facets_reversed -= stl->stats.number_of_facets;  // for not altering stats
+}
+
+float get_area(stl_facet *facet)
+{
+	/* cast to double before calculating cross product because large coordinates
+	 can result in overflowing product
+	(bad area is responsible for bad volume and bad facets reversal) */
+	double cross[3][3];
+	for (int i = 0; i < 3; i++) {
+		cross[i][0]=(((double)facet->vertex[i](1) * (double)facet->vertex[(i + 1) % 3](2)) -
+	             	 ((double)facet->vertex[i](2) * (double)facet->vertex[(i + 1) % 3](1)));
+		cross[i][1]=(((double)facet->vertex[i](2) * (double)facet->vertex[(i + 1) % 3](0)) -
+	             	 ((double)facet->vertex[i](0) * (double)facet->vertex[(i + 1) % 3](2)));
+		cross[i][2]=(((double)facet->vertex[i](0) * (double)facet->vertex[(i + 1) % 3](1)) -
+	             	 ((double)facet->vertex[i](1) * (double)facet->vertex[(i + 1) % 3](0)));
+	}
+
+	stl_normal sum;
+	sum(0) = cross[0][0] + cross[1][0] + cross[2][0];
+	sum(1) = cross[0][1] + cross[1][1] + cross[2][1];
+	sum(2) = cross[0][2] + cross[1][2] + cross[2][2];
+
+	// This should already be done.  But just in case, let's do it again.
+	//FIXME this is questionable. the "sum" normal should be accurate, while the normal "n" may be calculated with a low accuracy.
+	stl_normal n;
+	stl_calculate_normal(n, facet);
+	stl_normalize_vector(n);
+	return 0.5f * n.dot(sum);
+}
+
+static float get_volume(stl_file *stl)
+{
+  	// Choose a point, any point as the reference.
+  	stl_vertex p0 = stl->facet_start[0].vertex[0];
+  	float volume = 0.f;
+  	for (uint32_t i = 0; i < stl->stats.number_of_facets; ++ i) {
+    	// Do dot product to get distance from point to plane.
+    	float height = stl->facet_start[i].normal.dot(stl->facet_start[i].vertex[0] - p0);
+    	float area   = get_area(&stl->facet_start[i]);
+    	volume += (area * height) / 3.0f;
+  	}
+  	return volume;
+}
+
+void stl_calculate_volume(stl_file *stl)
+{
+  	stl->stats.volume = get_volume(stl);
+  	if (stl->stats.volume < 0.0) {
+    	stl_reverse_all_facets(stl);
+    	stl->stats.volume = -stl->stats.volume;
+  	}
+}
+
+void stl_repair(
+	stl_file *stl,
+	bool fixall_flag,
+	bool exact_flag,
+	bool tolerance_flag,
+	float tolerance,
+	bool increment_flag,
+	float increment,
+	bool nearby_flag,
+	int iterations,
+	bool remove_unconnected_flag,
+	bool fill_holes_flag,
+	bool normal_directions_flag,
+	bool normal_values_flag,
+	bool reverse_all_flag,
+	bool verbose_flag)
+{
+	if (exact_flag || fixall_flag || nearby_flag || remove_unconnected_flag || fill_holes_flag || normal_directions_flag) {
+		if (verbose_flag)
+		  	printf("Checking exact...\n");
+		exact_flag = true;
+		stl_check_facets_exact(stl);
+		stl->stats.facets_w_1_bad_edge = (stl->stats.connected_facets_2_edge - stl->stats.connected_facets_3_edge);
+		stl->stats.facets_w_2_bad_edge = (stl->stats.connected_facets_1_edge - stl->stats.connected_facets_2_edge);
+		stl->stats.facets_w_3_bad_edge = (stl->stats.number_of_facets - stl->stats.connected_facets_1_edge);
+	}
+
+  	if (nearby_flag || fixall_flag) {
+    	if (! tolerance_flag)
+      		tolerance = stl->stats.shortest_edge;
+ 	   	if (! increment_flag)
+      		increment = stl->stats.bounding_diameter / 10000.0;
+    }
+
+	if (stl->stats.connected_facets_3_edge < int(stl->stats.number_of_facets)) {
+	  	int last_edges_fixed = 0;
+	  	for (int i = 0; i < iterations; ++ i) {
+	    	if (stl->stats.connected_facets_3_edge < int(stl->stats.number_of_facets)) {
+	      		if (verbose_flag)
+	        		printf("Checking nearby. Tolerance= %f Iteration=%d of %d...", tolerance, i + 1, iterations);
+	      		stl_check_facets_nearby(stl, tolerance);
+	      		if (verbose_flag)
+	        		printf("  Fixed %d edges.\n", stl->stats.edges_fixed - last_edges_fixed);
+	      		last_edges_fixed = stl->stats.edges_fixed;
+	      		tolerance += increment;
+	    	} else {
+	    		if (verbose_flag)
+	        		printf("All facets connected.  No further nearby check necessary.\n");
+		      	break;
+		    }
+	  	}
+	} else if (verbose_flag)
+	    printf("All facets connected.  No nearby check necessary.\n");
+
+	if (remove_unconnected_flag || fixall_flag || fill_holes_flag) {
+		if (stl->stats.connected_facets_3_edge < int(stl->stats.number_of_facets)) {
+	  		if (verbose_flag)
+	    		printf("Removing unconnected facets...\n");
+	  		stl_remove_unconnected_facets(stl);
+		} else if (verbose_flag)
+	    	printf("No unconnected need to be removed.\n");
+	}
+
+	if (fill_holes_flag || fixall_flag) {
+		if (stl->stats.connected_facets_3_edge < int(stl->stats.number_of_facets)) {
+	  		if (verbose_flag)
+	    		printf("Filling holes...\n");
+	  		stl_fill_holes(stl);
+		} else if (verbose_flag)
+	    	printf("No holes need to be filled.\n");
+	}
+
+	if (reverse_all_flag) {
+		if (verbose_flag)
+	  		printf("Reversing all facets...\n");
+		stl_reverse_all_facets(stl);
+	}
+
+	if (normal_directions_flag || fixall_flag) {
+		if (verbose_flag)
+	  		printf("Checking normal directions...\n");
+		stl_fix_normal_directions(stl);
+	}
+
+	if (normal_values_flag || fixall_flag) {
+		if (verbose_flag)
+	  		printf("Checking normal values...\n");
+		stl_fix_normal_values(stl);
+	}
+
+  	// Always calculate the volume.  It shouldn't take too long.
+	if (verbose_flag)
+		printf("Calculating volume...\n");
+	stl_calculate_volume(stl);
+
+	if (exact_flag) {
+		if (verbose_flag)
+	  		printf("Verifying neighbors...\n");
+		stl_verify_neighbors(stl);
+	}
+}

deps_src/agg/AUTHORS

@@ -0,0 +1,2 @@
+Anti-Grain Geometry - Version 2.4
+Copyright (C) 2002-2005 Maxim Shemanarev (McSeem) 

deps_src/agg/CMakeLists.txt

@@ -0,0 +1,35 @@
+cmake_minimum_required(VERSION 3.13)
+project(agg)
+
+add_library(agg INTERFACE)
+
+target_include_directories(agg INTERFACE
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+target_sources(agg INTERFACE
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_array.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_basics.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_bezier_arc.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_clip_liang_barsky.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_color_gray.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_color_rgba.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_config.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_conv_transform.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_gamma_functions.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_gamma_lut.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_math.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_path_storage.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_pixfmt_base.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_pixfmt_gray.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_pixfmt_rgb.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_rasterizer_cells_aa.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_rasterizer_scanline_aa.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_rasterizer_scanline_aa_nogamma.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_rasterizer_sl_clip.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_renderer_base.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_renderer_scanline.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_rendering_buffer.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_scanline_p.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_trans_affine.h
+)

deps_src/agg/VERSION

@@ -0,0 +1,2 @@
+2.4
+svn revision 128

deps_src/agg/agg_basics.h

@@ -0,0 +1,574 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+
+#ifndef AGG_BASICS_INCLUDED
+#define AGG_BASICS_INCLUDED
+
+#include <cmath>
+#include "agg_config.h"
+
+//---------------------------------------------------------AGG_CUSTOM_ALLOCATOR
+#ifdef AGG_CUSTOM_ALLOCATOR
+#include "agg_allocator.h"
+#else
+namespace agg
+{
+    // The policy of all AGG containers and memory allocation strategy 
+    // in general is that no allocated data requires explicit construction.
+    // It means that the allocator can be really simple; you can even
+    // replace new/delete to malloc/free. The constructors and destructors 
+    // won't be called in this case, however everything will remain working. 
+    // The second argument of deallocate() is the size of the allocated 
+    // block. You can use this information if you wish.
+    //------------------------------------------------------------pod_allocator
+    template<class T> struct pod_allocator
+    {
+        static T*   allocate(unsigned num)       { return new T [num]; }
+        static void deallocate(T* ptr, unsigned) { delete [] ptr;      }
+    };
+
+    // Single object allocator. It's also can be replaced with your custom
+    // allocator. The difference is that it can only allocate a single 
+    // object and the constructor and destructor must be called. 
+    // In AGG there is no need to allocate an array of objects with
+    // calling their constructors (only single ones). So that, if you
+    // replace these new/delete to malloc/free make sure that the in-place
+    // new is called and take care of calling the destructor too.
+    //------------------------------------------------------------obj_allocator
+    template<class T> struct obj_allocator
+    {
+        static T*   allocate()         { return new T; }
+        static void deallocate(T* ptr) { delete ptr;   }
+    };
+}
+#endif
+
+
+//-------------------------------------------------------- Default basic types
+//
+// If the compiler has different capacity of the basic types you can redefine
+// them via the compiler command line or by generating agg_config.h that is
+// empty by default.
+//
+#ifndef AGG_INT8
+#define AGG_INT8 signed char
+#endif
+
+#ifndef AGG_INT8U
+#define AGG_INT8U unsigned char
+#endif
+
+#ifndef AGG_INT16
+#define AGG_INT16 short
+#endif
+
+#ifndef AGG_INT16U
+#define AGG_INT16U unsigned short
+#endif
+
+#ifndef AGG_INT32
+#define AGG_INT32 int
+#endif
+
+#ifndef AGG_INT32U
+#define AGG_INT32U unsigned
+#endif
+
+#ifndef AGG_INT64
+#if defined(_MSC_VER) || defined(__BORLANDC__)
+#define AGG_INT64 signed __int64
+#else
+#define AGG_INT64 signed long long
+#endif
+#endif
+
+#ifndef AGG_INT64U
+#if defined(_MSC_VER) || defined(__BORLANDC__)
+#define AGG_INT64U unsigned __int64
+#else
+#define AGG_INT64U unsigned long long
+#endif
+#endif
+
+//------------------------------------------------ Some fixes for MS Visual C++
+#if defined(_MSC_VER)
+#pragma warning(disable:4786) // Identifier was truncated...
+#endif
+
+#if defined(_MSC_VER)
+#define AGG_INLINE __forceinline
+#else
+#define AGG_INLINE inline
+#endif
+
+namespace agg
+{
+    //-------------------------------------------------------------------------
+    typedef AGG_INT8   int8;         //----int8
+    typedef AGG_INT8U  int8u;        //----int8u
+    typedef AGG_INT16  int16;        //----int16
+    typedef AGG_INT16U int16u;       //----int16u
+    typedef AGG_INT32  int32;        //----int32
+    typedef AGG_INT32U int32u;       //----int32u
+    typedef AGG_INT64  int64;        //----int64
+    typedef AGG_INT64U int64u;       //----int64u
+
+#if defined(AGG_FISTP)
+#pragma warning(push)
+#pragma warning(disable : 4035) //Disable warning "no return value"
+    AGG_INLINE int iround(double v)              //-------iround
+    {
+        int t;
+        __asm fld   qword ptr [v]
+        __asm fistp dword ptr [t]
+        __asm mov eax, dword ptr [t]
+    }
+    AGG_INLINE unsigned uround(double v)         //-------uround
+    {
+        unsigned t;
+        __asm fld   qword ptr [v]
+        __asm fistp dword ptr [t]
+        __asm mov eax, dword ptr [t]
+    }
+#pragma warning(pop)
+    AGG_INLINE int ifloor(double v)
+    {
+        return int(floor(v));
+    }
+    AGG_INLINE unsigned ufloor(double v)         //-------ufloor
+    {
+        return unsigned(floor(v));
+    }
+    AGG_INLINE int iceil(double v)
+    {
+        return int(ceil(v));
+    }
+    AGG_INLINE unsigned uceil(double v)          //--------uceil
+    {
+        return unsigned(ceil(v));
+    }
+#elif defined(AGG_QIFIST)
+    AGG_INLINE int iround(double v)
+    {
+        return int(v);
+    }
+    AGG_INLINE int uround(double v)
+    {
+        return unsigned(v);
+    }
+    AGG_INLINE int ifloor(double v)
+    {
+        return int(floor(v));
+    }
+    AGG_INLINE unsigned ufloor(double v)
+    {
+        return unsigned(floor(v));
+    }
+    AGG_INLINE int iceil(double v)
+    {
+        return int(ceil(v));
+    }
+    AGG_INLINE unsigned uceil(double v)
+    {
+        return unsigned(ceil(v));
+    }
+#else
+    AGG_INLINE int iround(double v)
+    {
+        return int((v < 0.0) ? v - 0.5 : v + 0.5);
+    }
+    AGG_INLINE int uround(double v)
+    {
+        return unsigned(v + 0.5);
+    }
+    AGG_INLINE int ifloor(double v)
+    {
+        int i = int(v);
+        return i - (i > v);
+    }
+    AGG_INLINE unsigned ufloor(double v)
+    {
+        return unsigned(v);
+    }
+    AGG_INLINE int iceil(double v)
+    {
+        return int(ceil(v));
+    }
+    AGG_INLINE unsigned uceil(double v)
+    {
+        return unsigned(ceil(v));
+    }
+#endif
+
+    //---------------------------------------------------------------saturation
+    template<int Limit> struct saturation
+    {
+        AGG_INLINE static int iround(double v)
+        {
+            if(v < double(-Limit)) return -Limit;
+            if(v > double( Limit)) return  Limit;
+            return agg::iround(v);
+        }
+    };
+
+    //------------------------------------------------------------------mul_one
+    template<unsigned Shift> struct mul_one
+    {
+        AGG_INLINE static unsigned mul(unsigned a, unsigned b)
+        {
+            unsigned q = a * b + (1 << (Shift-1));
+            return (q + (q >> Shift)) >> Shift;
+        }
+    };
+
+    //-------------------------------------------------------------------------
+    typedef unsigned char cover_type;    //----cover_type
+    enum cover_scale_e
+    {
+        cover_shift = 8,                 //----cover_shift
+        cover_size  = 1 << cover_shift,  //----cover_size 
+        cover_mask  = cover_size - 1,    //----cover_mask 
+        cover_none  = 0,                 //----cover_none 
+        cover_full  = cover_mask         //----cover_full 
+    };
+
+    //----------------------------------------------------poly_subpixel_scale_e
+    // These constants determine the subpixel accuracy, to be more precise, 
+    // the number of bits of the fractional part of the coordinates. 
+    // The possible coordinate capacity in bits can be calculated by formula:
+    // sizeof(int) * 8 - poly_subpixel_shift, i.e, for 32-bit integers and
+    // 8-bits fractional part the capacity is 24 bits.
+    enum poly_subpixel_scale_e
+    {
+        poly_subpixel_shift = 8,                      //----poly_subpixel_shift
+        poly_subpixel_scale = 1<<poly_subpixel_shift, //----poly_subpixel_scale 
+        poly_subpixel_mask  = poly_subpixel_scale-1   //----poly_subpixel_mask 
+    };
+
+    //----------------------------------------------------------filling_rule_e
+    enum filling_rule_e
+    {
+        fill_non_zero,
+        fill_even_odd
+    };
+
+    //-----------------------------------------------------------------------pi
+    const double pi = 3.14159265358979323846;
+
+    //------------------------------------------------------------------deg2rad
+    inline double deg2rad(double deg)
+    {
+        return deg * pi / 180.0;
+    }
+
+    //------------------------------------------------------------------rad2deg
+    inline double rad2deg(double rad)
+    {
+        return rad * 180.0 / pi;
+    }
+ 
+    //----------------------------------------------------------------rect_base
+    template<class T> struct rect_base
+    {
+        typedef T            value_type;
+        typedef rect_base<T> self_type;
+        T x1, y1, x2, y2;
+
+        rect_base() {}
+        rect_base(T x1_, T y1_, T x2_, T y2_) :
+            x1(x1_), y1(y1_), x2(x2_), y2(y2_) {}
+
+        void init(T x1_, T y1_, T x2_, T y2_) 
+        {
+            x1 = x1_; y1 = y1_; x2 = x2_; y2 = y2_; 
+        }
+
+        const self_type& normalize()
+        {
+            T t;
+            if(x1 > x2) { t = x1; x1 = x2; x2 = t; }
+            if(y1 > y2) { t = y1; y1 = y2; y2 = t; }
+            return *this;
+        }
+
+        bool clip(const self_type& r)
+        {
+            if(x2 > r.x2) x2 = r.x2;
+            if(y2 > r.y2) y2 = r.y2;
+            if(x1 < r.x1) x1 = r.x1;
+            if(y1 < r.y1) y1 = r.y1;
+            return x1 <= x2 && y1 <= y2;
+        }
+
+        bool is_valid() const
+        {
+            return x1 <= x2 && y1 <= y2;
+        }
+
+        bool hit_test(T x, T y) const
+        {
+            return (x >= x1 && x <= x2 && y >= y1 && y <= y2);
+        }
+        
+        bool overlaps(const self_type& r) const
+        {
+            return !(r.x1 > x2 || r.x2 < x1
+                  || r.y1 > y2 || r.y2 < y1);
+        }
+    };
+
+    //-----------------------------------------------------intersect_rectangles
+    template<class Rect> 
+    inline Rect intersect_rectangles(const Rect& r1, const Rect& r2)
+    {
+        Rect r = r1;
+
+        // First process x2,y2 because the other order 
+        // results in Internal Compiler Error under 
+        // Microsoft Visual C++ .NET 2003 69462-335-0000007-18038 in 
+        // case of "Maximize Speed" optimization option.
+        //-----------------
+        if(r.x2 > r2.x2) r.x2 = r2.x2; 
+        if(r.y2 > r2.y2) r.y2 = r2.y2;
+        if(r.x1 < r2.x1) r.x1 = r2.x1;
+        if(r.y1 < r2.y1) r.y1 = r2.y1;
+        return r;
+    }
+
+
+    //---------------------------------------------------------unite_rectangles
+    template<class Rect> 
+    inline Rect unite_rectangles(const Rect& r1, const Rect& r2)
+    {
+        Rect r = r1;
+        if(r.x2 < r2.x2) r.x2 = r2.x2;
+        if(r.y2 < r2.y2) r.y2 = r2.y2;
+        if(r.x1 > r2.x1) r.x1 = r2.x1;
+        if(r.y1 > r2.y1) r.y1 = r2.y1;
+        return r;
+    }
+
+    typedef rect_base<int>    rect_i; //----rect_i
+    typedef rect_base<float>  rect_f; //----rect_f
+    typedef rect_base<double> rect_d; //----rect_d
+
+    //---------------------------------------------------------path_commands_e
+    enum path_commands_e
+    {
+        path_cmd_stop     = 0,        //----path_cmd_stop    
+        path_cmd_move_to  = 1,        //----path_cmd_move_to 
+        path_cmd_line_to  = 2,        //----path_cmd_line_to 
+        path_cmd_curve3   = 3,        //----path_cmd_curve3  
+        path_cmd_curve4   = 4,        //----path_cmd_curve4  
+        path_cmd_curveN   = 5,        //----path_cmd_curveN
+        path_cmd_catrom   = 6,        //----path_cmd_catrom
+        path_cmd_ubspline = 7,        //----path_cmd_ubspline
+        path_cmd_end_poly = 0x0F,     //----path_cmd_end_poly
+        path_cmd_mask     = 0x0F      //----path_cmd_mask    
+    };
+
+    //------------------------------------------------------------path_flags_e
+    enum path_flags_e
+    {
+        path_flags_none  = 0,         //----path_flags_none 
+        path_flags_ccw   = 0x10,      //----path_flags_ccw  
+        path_flags_cw    = 0x20,      //----path_flags_cw   
+        path_flags_close = 0x40,      //----path_flags_close
+        path_flags_mask  = 0xF0       //----path_flags_mask 
+    };
+
+    //---------------------------------------------------------------is_vertex
+    inline bool is_vertex(unsigned c)
+    {
+        return c >= path_cmd_move_to && c < path_cmd_end_poly;
+    }
+
+    //--------------------------------------------------------------is_drawing
+    inline bool is_drawing(unsigned c)
+    {
+        return c >= path_cmd_line_to && c < path_cmd_end_poly;
+    }
+
+    //-----------------------------------------------------------------is_stop
+    inline bool is_stop(unsigned c)
+    { 
+        return c == path_cmd_stop;
+    }
+
+    //--------------------------------------------------------------is_move_to
+    inline bool is_move_to(unsigned c)
+    {
+        return c == path_cmd_move_to;
+    }
+
+    //--------------------------------------------------------------is_line_to
+    inline bool is_line_to(unsigned c)
+    {
+        return c == path_cmd_line_to;
+    }
+
+    //----------------------------------------------------------------is_curve
+    inline bool is_curve(unsigned c)
+    {
+        return c == path_cmd_curve3 || c == path_cmd_curve4;
+    }
+
+    //---------------------------------------------------------------is_curve3
+    inline bool is_curve3(unsigned c)
+    {
+        return c == path_cmd_curve3;
+    }
+
+    //---------------------------------------------------------------is_curve4
+    inline bool is_curve4(unsigned c)
+    {
+        return c == path_cmd_curve4;
+    }
+
+    //-------------------------------------------------------------is_end_poly
+    inline bool is_end_poly(unsigned c)
+    {
+        return (c & path_cmd_mask) == path_cmd_end_poly;
+    }
+
+    //----------------------------------------------------------------is_close
+    inline bool is_close(unsigned c)
+    {
+        return (c & ~(path_flags_cw | path_flags_ccw)) ==
+               (path_cmd_end_poly | path_flags_close); 
+    }
+
+    //------------------------------------------------------------is_next_poly
+    inline bool is_next_poly(unsigned c)
+    {
+        return is_stop(c) || is_move_to(c) || is_end_poly(c);
+    }
+
+    //-------------------------------------------------------------------is_cw
+    inline bool is_cw(unsigned c)
+    {
+        return (c & path_flags_cw) != 0;
+    }
+
+    //------------------------------------------------------------------is_ccw
+    inline bool is_ccw(unsigned c)
+    {
+        return (c & path_flags_ccw) != 0;
+    }
+
+    //-------------------------------------------------------------is_oriented
+    inline bool is_oriented(unsigned c)
+    {
+        return (c & (path_flags_cw | path_flags_ccw)) != 0; 
+    }
+
+    //---------------------------------------------------------------is_closed
+    inline bool is_closed(unsigned c)
+    {
+        return (c & path_flags_close) != 0; 
+    }
+
+    //----------------------------------------------------------get_close_flag
+    inline unsigned get_close_flag(unsigned c)
+    {
+        return c & path_flags_close; 
+    }
+
+    //-------------------------------------------------------clear_orientation
+    inline unsigned clear_orientation(unsigned c)
+    {
+        return c & ~(path_flags_cw | path_flags_ccw);
+    }
+
+    //---------------------------------------------------------get_orientation
+    inline unsigned get_orientation(unsigned c)
+    {
+        return c & (path_flags_cw | path_flags_ccw);
+    }
+
+    //---------------------------------------------------------set_orientation
+    inline unsigned set_orientation(unsigned c, unsigned o)
+    {
+        return clear_orientation(c) | o;
+    }
+
+    //--------------------------------------------------------------point_base
+    template<class T> struct point_base
+    {
+        typedef T value_type;
+        T x,y;
+        point_base() {}
+        point_base(T x_, T y_) : x(x_), y(y_) {}
+    };
+    typedef point_base<int>    point_i; //-----point_i
+    typedef point_base<float>  point_f; //-----point_f
+    typedef point_base<double> point_d; //-----point_d
+
+    //-------------------------------------------------------------vertex_base
+    template<class T> struct vertex_base
+    {
+        typedef T value_type;
+        T x,y;
+        unsigned cmd;
+        vertex_base() {}
+        vertex_base(T x_, T y_, unsigned cmd_) : x(x_), y(y_), cmd(cmd_) {}
+    };
+    typedef vertex_base<int>    vertex_i; //-----vertex_i
+    typedef vertex_base<float>  vertex_f; //-----vertex_f
+    typedef vertex_base<double> vertex_d; //-----vertex_d
+
+    //----------------------------------------------------------------row_info
+    template<class T> struct row_info
+    {
+        int x1, x2;
+        T* ptr;
+        row_info() {}
+        row_info(int x1_, int x2_, T* ptr_) : x1(x1_), x2(x2_), ptr(ptr_) {}
+    };
+
+    //----------------------------------------------------------const_row_info
+    template<class T> struct const_row_info
+    {
+        int x1, x2;
+        const T* ptr;
+        const_row_info() {}
+        const_row_info(int x1_, int x2_, const T* ptr_) : 
+            x1(x1_), x2(x2_), ptr(ptr_) {}
+    };
+
+    //------------------------------------------------------------is_equal_eps
+    template<class T> inline bool is_equal_eps(T v1, T v2, T epsilon)
+    {
+	bool neg1 = v1 < 0.0;
+	bool neg2 = v2 < 0.0;
+
+	if (neg1 != neg2)
+	    return std::fabs(v1) < epsilon && std::fabs(v2) < epsilon;
+
+        int int1, int2;
+	std::frexp(v1, &int1);
+	std::frexp(v2, &int2);
+	int min12 = int1 < int2 ? int1 : int2;
+
+	v1 = std::ldexp(v1, -min12);
+	v2 = std::ldexp(v2, -min12);
+
+	return std::fabs(v1 - v2) < epsilon;
+    }
+}
+
+
+#endif
+

deps_src/agg/agg_bezier_arc.h

@@ -0,0 +1,159 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Arc generator. Produces at most 4 consecutive cubic bezier curves, i.e., 
+// 4, 7, 10, or 13 vertices.
+//
+//----------------------------------------------------------------------------
+
+#ifndef AGG_BEZIER_ARC_INCLUDED
+#define AGG_BEZIER_ARC_INCLUDED
+
+#include "agg_conv_transform.h"
+
+namespace agg
+{
+
+    //-----------------------------------------------------------------------
+    void arc_to_bezier(double cx, double cy, double rx, double ry, 
+                       double start_angle, double sweep_angle,
+                       double* curve);
+
+
+    //==============================================================bezier_arc
+    // 
+    // See implemantaion agg_bezier_arc.cpp
+    //
+    class bezier_arc
+    {
+    public:
+        //--------------------------------------------------------------------
+        bezier_arc() : m_vertex(26), m_num_vertices(0), m_cmd(path_cmd_line_to) {}
+        bezier_arc(double x,  double y, 
+                   double rx, double ry, 
+                   double start_angle, 
+                   double sweep_angle)
+        {
+            init(x, y, rx, ry, start_angle, sweep_angle);
+        }
+
+        //--------------------------------------------------------------------
+        void init(double x,  double y, 
+                  double rx, double ry, 
+                  double start_angle, 
+                  double sweep_angle);
+
+        //--------------------------------------------------------------------
+        void rewind(unsigned)
+        {
+            m_vertex = 0;
+        }
+
+        //--------------------------------------------------------------------
+        unsigned vertex(double* x, double* y)
+        {
+            if(m_vertex >= m_num_vertices) return path_cmd_stop;
+            *x = m_vertices[m_vertex];
+            *y = m_vertices[m_vertex + 1];
+            m_vertex += 2;
+            return (m_vertex == 2) ? unsigned(path_cmd_move_to) : m_cmd;
+        }
+
+        // Supplemantary functions. num_vertices() actually returns doubled 
+        // number of vertices. That is, for 1 vertex it returns 2.
+        //--------------------------------------------------------------------
+        unsigned  num_vertices() const { return m_num_vertices; }
+        const double* vertices() const { return m_vertices;     }
+        double*       vertices()       { return m_vertices;     }
+ 
+    private:
+        unsigned m_vertex;
+        unsigned m_num_vertices;
+        double   m_vertices[26];
+        unsigned m_cmd;
+    };
+
+
+
+    //==========================================================bezier_arc_svg
+    // Compute an SVG-style bezier arc. 
+    //
+    // Computes an elliptical arc from (x1, y1) to (x2, y2). The size and 
+    // orientation of the ellipse are defined by two radii (rx, ry) 
+    // and an x-axis-rotation, which indicates how the ellipse as a whole 
+    // is rotated relative to the current coordinate system. The center 
+    // (cx, cy) of the ellipse is calculated automatically to satisfy the 
+    // constraints imposed by the other parameters. 
+    // large-arc-flag and sweep-flag contribute to the automatic calculations 
+    // and help determine how the arc is drawn.
+    class bezier_arc_svg
+    {
+    public:
+        //--------------------------------------------------------------------
+        bezier_arc_svg() : m_arc(), m_radii_ok(false) {}
+
+        bezier_arc_svg(double x1, double y1, 
+                       double rx, double ry, 
+                       double angle,
+                       bool large_arc_flag,
+                       bool sweep_flag,
+                       double x2, double y2) : 
+            m_arc(), m_radii_ok(false)
+        {
+            init(x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2);
+        }
+
+        //--------------------------------------------------------------------
+        void init(double x1, double y1, 
+                  double rx, double ry, 
+                  double angle,
+                  bool large_arc_flag,
+                  bool sweep_flag,
+                  double x2, double y2);
+
+        //--------------------------------------------------------------------
+        bool radii_ok() const { return m_radii_ok; }
+
+        //--------------------------------------------------------------------
+        void rewind(unsigned)
+        {
+            m_arc.rewind(0);
+        }
+
+        //--------------------------------------------------------------------
+        unsigned vertex(double* x, double* y)
+        {
+            return m_arc.vertex(x, y);
+        }
+
+        // Supplemantary functions. num_vertices() actually returns doubled 
+        // number of vertices. That is, for 1 vertex it returns 2.
+        //--------------------------------------------------------------------
+        unsigned  num_vertices() const { return m_arc.num_vertices(); }
+        const double* vertices() const { return m_arc.vertices();     }
+        double*       vertices()       { return m_arc.vertices();     }
+
+    private:
+        bezier_arc m_arc;
+        bool       m_radii_ok;
+    };
+
+
+
+
+}
+
+
+#endif

deps_src/agg/agg_clip_liang_barsky.h

@@ -0,0 +1,333 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Liang-Barsky clipping 
+//
+//----------------------------------------------------------------------------
+#ifndef AGG_CLIP_LIANG_BARSKY_INCLUDED
+#define AGG_CLIP_LIANG_BARSKY_INCLUDED
+
+#include "agg_basics.h"
+
+namespace agg
+{
+
+    //------------------------------------------------------------------------
+    enum clipping_flags_e
+    {
+        clipping_flags_x1_clipped = 4,
+        clipping_flags_x2_clipped = 1,
+        clipping_flags_y1_clipped = 8,
+        clipping_flags_y2_clipped = 2,
+        clipping_flags_x_clipped = clipping_flags_x1_clipped | clipping_flags_x2_clipped,
+        clipping_flags_y_clipped = clipping_flags_y1_clipped | clipping_flags_y2_clipped
+    };
+
+    //----------------------------------------------------------clipping_flags
+    // Determine the clipping code of the vertex according to the 
+    // Cyrus-Beck line clipping algorithm
+    //
+    //        |        |
+    //  0110  |  0010  | 0011
+    //        |        |
+    // -------+--------+-------- clip_box.y2
+    //        |        |
+    //  0100  |  0000  | 0001
+    //        |        |
+    // -------+--------+-------- clip_box.y1
+    //        |        |
+    //  1100  |  1000  | 1001
+    //        |        |
+    //  clip_box.x1  clip_box.x2
+    //
+    // 
+    template<class T>
+    inline unsigned clipping_flags(T x, T y, const rect_base<T>& clip_box)
+    {
+        return  (x > clip_box.x2) |
+               ((y > clip_box.y2) << 1) |
+               ((x < clip_box.x1) << 2) |
+               ((y < clip_box.y1) << 3);
+    }
+
+    //--------------------------------------------------------clipping_flags_x
+    template<class T>
+    inline unsigned clipping_flags_x(T x, const rect_base<T>& clip_box)
+    {
+        return  (x > clip_box.x2) | ((x < clip_box.x1) << 2);
+    }
+
+
+    //--------------------------------------------------------clipping_flags_y
+    template<class T>
+    inline unsigned clipping_flags_y(T y, const rect_base<T>& clip_box)
+    {
+        return ((y > clip_box.y2) << 1) | ((y < clip_box.y1) << 3);
+    }
+
+
+    //-------------------------------------------------------clip_liang_barsky
+    template<class T>
+    inline unsigned clip_liang_barsky(T x1, T y1, T x2, T y2,
+                                      const rect_base<T>& clip_box,
+                                      T* x, T* y)
+    {
+        const double nearzero = 1e-30;
+
+        double deltax = x2 - x1;
+        double deltay = y2 - y1; 
+        double xin;
+        double xout;
+        double yin;
+        double yout;
+        double tinx;
+        double tiny;
+        double toutx;
+        double touty;  
+        double tin1;
+        double tin2;
+        double tout1;
+        unsigned np = 0;
+
+        if(deltax == 0.0) 
+        {   
+            // bump off of the vertical
+            deltax = (x1 > clip_box.x1) ? -nearzero : nearzero;
+        }
+
+        if(deltay == 0.0) 
+        { 
+            // bump off of the horizontal 
+            deltay = (y1 > clip_box.y1) ? -nearzero : nearzero;
+        }
+        
+        if(deltax > 0.0) 
+        {                
+            // points to right
+            xin  = clip_box.x1;
+            xout = clip_box.x2;
+        }
+        else 
+        {
+            xin  = clip_box.x2;
+            xout = clip_box.x1;
+        }
+
+        if(deltay > 0.0) 
+        {
+            // points up
+            yin  = clip_box.y1;
+            yout = clip_box.y2;
+        }
+        else 
+        {
+            yin  = clip_box.y2;
+            yout = clip_box.y1;
+        }
+        
+        tinx = (xin - x1) / deltax;
+        tiny = (yin - y1) / deltay;
+        
+        if (tinx < tiny) 
+        {
+            // hits x first
+            tin1 = tinx;
+            tin2 = tiny;
+        }
+        else
+        {
+            // hits y first
+            tin1 = tiny;
+            tin2 = tinx;
+        }
+        
+        if(tin1 <= 1.0) 
+        {
+            if(0.0 < tin1) 
+            {
+                *x++ = (T)xin;
+                *y++ = (T)yin;
+                ++np;
+            }
+
+            if(tin2 <= 1.0)
+            {
+                toutx = (xout - x1) / deltax;
+                touty = (yout - y1) / deltay;
+                
+                tout1 = (toutx < touty) ? toutx : touty;
+                
+                if(tin2 > 0.0 || tout1 > 0.0) 
+                {
+                    if(tin2 <= tout1) 
+                    {
+                        if(tin2 > 0.0) 
+                        {
+                            if(tinx > tiny) 
+                            {
+                                *x++ = (T)xin;
+                                *y++ = (T)(y1 + tinx * deltay);
+                            }
+                            else 
+                            {
+                                *x++ = (T)(x1 + tiny * deltax);
+                                *y++ = (T)yin;
+                            }
+                            ++np;
+                        }
+
+                        if(tout1 < 1.0) 
+                        {
+                            if(toutx < touty) 
+                            {
+                                *x++ = (T)xout;
+                                *y++ = (T)(y1 + toutx * deltay);
+                            }
+                            else 
+                            {
+                                *x++ = (T)(x1 + touty * deltax);
+                                *y++ = (T)yout;
+                            }
+                        }
+                        else 
+                        {
+                            *x++ = x2;
+                            *y++ = y2;
+                        }
+                        ++np;
+                    }
+                    else 
+                    {
+                        if(tinx > tiny) 
+                        {
+                            *x++ = (T)xin;
+                            *y++ = (T)yout;
+                        }
+                        else 
+                        {
+                            *x++ = (T)xout;
+                            *y++ = (T)yin;
+                        }
+                        ++np;
+                    }
+                }
+            }
+        }
+        return np;
+    }
+
+
+    //----------------------------------------------------------------------------
+    template<class T>
+    bool clip_move_point(T x1, T y1, T x2, T y2, 
+                         const rect_base<T>& clip_box, 
+                         T* x, T* y, unsigned flags)
+    {
+       T bound;
+
+       if(flags & clipping_flags_x_clipped)
+       {
+           if(x1 == x2)
+           {
+               return false;
+           }
+           bound = (flags & clipping_flags_x1_clipped) ? clip_box.x1 : clip_box.x2;
+           *y = (T)(double(bound - x1) * (y2 - y1) / (x2 - x1) + y1);
+           *x = bound;
+       }
+
+       flags = clipping_flags_y(*y, clip_box);
+       if(flags & clipping_flags_y_clipped)
+       {
+           if(y1 == y2)
+           {
+               return false;
+           }
+           bound = (flags & clipping_flags_y1_clipped) ? clip_box.y1 : clip_box.y2;
+           *x = (T)(double(bound - y1) * (x2 - x1) / (y2 - y1) + x1);
+           *y = bound;
+       }
+       return true;
+    }
+
+    //-------------------------------------------------------clip_line_segment
+    // Returns: ret >= 4        - Fully clipped
+    //          (ret & 1) != 0  - First point has been moved
+    //          (ret & 2) != 0  - Second point has been moved
+    //
+    template<class T>
+    unsigned clip_line_segment(T* x1, T* y1, T* x2, T* y2,
+                               const rect_base<T>& clip_box)
+    {
+        unsigned f1 = clipping_flags(*x1, *y1, clip_box);
+        unsigned f2 = clipping_flags(*x2, *y2, clip_box);
+        unsigned ret = 0;
+
+        if((f2 | f1) == 0)
+        {
+            // Fully visible
+            return 0;
+        }
+
+        if((f1 & clipping_flags_x_clipped) != 0 && 
+           (f1 & clipping_flags_x_clipped) == (f2 & clipping_flags_x_clipped))
+        {
+            // Fully clipped
+            return 4;
+        }
+
+        if((f1 & clipping_flags_y_clipped) != 0 && 
+           (f1 & clipping_flags_y_clipped) == (f2 & clipping_flags_y_clipped))
+        {
+            // Fully clipped
+            return 4;
+        }
+
+        T tx1 = *x1;
+        T ty1 = *y1;
+        T tx2 = *x2;
+        T ty2 = *y2;
+        if(f1) 
+        {   
+            if(!clip_move_point(tx1, ty1, tx2, ty2, clip_box, x1, y1, f1)) 
+            {
+                return 4;
+            }
+            if(*x1 == *x2 && *y1 == *y2) 
+            {
+                return 4;
+            }
+            ret |= 1;
+        }
+        if(f2) 
+        {
+            if(!clip_move_point(tx1, ty1, tx2, ty2, clip_box, x2, y2, f2))
+            {
+                return 4;
+            }
+            if(*x1 == *x2 && *y1 == *y2) 
+            {
+                return 4;
+            }
+            ret |= 2;
+        }
+        return ret;
+    }
+
+
+}
+
+
+#endif

deps_src/agg/agg_config.h

@@ -0,0 +1,44 @@
+#ifndef AGG_CONFIG_INCLUDED
+#define AGG_CONFIG_INCLUDED
+
+// This file can be used to redefine certain data types.
+
+//---------------------------------------
+// 1. Default basic types such as:
+// 
+// AGG_INT8
+// AGG_INT8U
+// AGG_INT16
+// AGG_INT16U
+// AGG_INT32
+// AGG_INT32U
+// AGG_INT64
+// AGG_INT64U
+//
+// Just replace this file with new defines if necessary. 
+// For example, if your compiler doesn't have a 64 bit integer type
+// you can still use AGG if you define the follows:
+//
+// #define AGG_INT64  int
+// #define AGG_INT64U unsigned
+//
+// It will result in overflow in 16 bit-per-component image/pattern resampling
+// but it won't result any crash and the rest of the library will remain 
+// fully functional.
+
+
+//---------------------------------------
+// 2. Default rendering_buffer type. Can be:
+//
+// Provides faster access for massive pixel operations, 
+// such as blur, image filtering:
+// #define AGG_RENDERING_BUFFER row_ptr_cache<int8u>
+// 
+// Provides cheaper creation and destruction (no mem allocs):
+// #define AGG_RENDERING_BUFFER row_accessor<int8u>
+//
+// You can still use both of them simultaneously in your applications 
+// This #define is used only for default rendering_buffer type,
+// in short hand typedefs like pixfmt_rgba32.
+
+#endif

deps_src/agg/agg_conv_transform.h

@@ -0,0 +1,68 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// class conv_transform
+//
+//----------------------------------------------------------------------------
+#ifndef AGG_CONV_TRANSFORM_INCLUDED
+#define AGG_CONV_TRANSFORM_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_trans_affine.h"
+
+namespace agg
+{
+
+    //----------------------------------------------------------conv_transform
+    template<class VertexSource, class Transformer=trans_affine> class conv_transform
+    {
+    public:
+        conv_transform(VertexSource& source, Transformer& tr) :
+            m_source(&source), m_trans(&tr) {}
+        void attach(VertexSource& source) { m_source = &source; }
+
+        void rewind(unsigned path_id) 
+        { 
+            m_source->rewind(path_id); 
+        }
+
+        unsigned vertex(double* x, double* y)
+        {
+            unsigned cmd = m_source->vertex(x, y);
+            if(is_vertex(cmd))
+            {
+                m_trans->transform(x, y);
+            }
+            return cmd;
+        }
+
+        void transformer(Transformer& tr)
+        {
+            m_trans = &tr;
+        }
+
+    private:
+        conv_transform(const conv_transform<VertexSource>&);
+        const conv_transform<VertexSource>& 
+            operator = (const conv_transform<VertexSource>&);
+
+        VertexSource*      m_source;
+        Transformer* m_trans;
+    };
+
+
+}
+
+#endif

deps_src/agg/agg_gamma_functions.h

@@ -0,0 +1,132 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+
+#ifndef AGG_GAMMA_FUNCTIONS_INCLUDED
+#define AGG_GAMMA_FUNCTIONS_INCLUDED
+
+#include <math.h>
+#include "agg_basics.h"
+
+namespace agg
+{
+    //===============================================================gamma_none
+    struct gamma_none
+    {
+        double operator()(double x) const { return x; }
+    };
+
+
+    //==============================================================gamma_power
+    class gamma_power
+    {
+    public:
+        gamma_power() : m_gamma(1.0) {}
+        gamma_power(double g) : m_gamma(g) {}
+
+        void gamma(double g) { m_gamma = g; }
+        double gamma() const { return m_gamma; }
+
+        double operator() (double x) const
+        {
+            return pow(x, m_gamma);
+        }
+
+    private:
+        double m_gamma;
+    };
+
+
+    //==========================================================gamma_threshold
+    class gamma_threshold
+    {
+    public:
+        gamma_threshold() : m_threshold(0.5) {}
+        gamma_threshold(double t) : m_threshold(t) {}
+
+        void threshold(double t) { m_threshold = t; }
+        double threshold() const { return m_threshold; }
+
+        double operator() (double x) const
+        {
+            return (x < m_threshold) ? 0.0 : 1.0;
+        }
+
+    private:
+        double m_threshold;
+    };
+
+
+    //============================================================gamma_linear
+    class gamma_linear
+    {
+    public:
+        gamma_linear() : m_start(0.0), m_end(1.0) {}
+        gamma_linear(double s, double e) : m_start(s), m_end(e) {}
+
+        void set(double s, double e) { m_start = s; m_end = e; }
+        void start(double s) { m_start = s; }
+        void end(double e) { m_end = e; }
+        double start() const { return m_start; }
+        double end() const { return m_end; }
+
+        double operator() (double x) const
+        {
+            if(x < m_start) return 0.0;
+            if(x > m_end) return 1.0;
+            return (x - m_start) / (m_end - m_start);
+        }
+
+    private:
+        double m_start;
+        double m_end;
+    };
+
+
+    //==========================================================gamma_multiply
+    class gamma_multiply
+    {
+    public:
+        gamma_multiply() : m_mul(1.0) {}
+        gamma_multiply(double v) : m_mul(v) {}
+
+        void value(double v) { m_mul = v; }
+        double value() const { return m_mul; }
+
+        double operator() (double x) const
+        {
+            double y = x * m_mul;
+            if(y > 1.0) y = 1.0;
+            return y;
+        }
+
+    private:
+        double m_mul;
+    };
+
+    inline double sRGB_to_linear(double x)
+    {
+        return (x <= 0.04045) ? (x / 12.92) : pow((x + 0.055) / (1.055), 2.4);
+    }
+
+    inline double linear_to_sRGB(double x)
+    {
+        return (x <= 0.0031308) ? (x * 12.92) : (1.055 * pow(x, 1 / 2.4) - 0.055);
+    }
+}
+
+#endif
+
+
+

deps_src/agg/agg_gamma_lut.h

@@ -0,0 +1,300 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+
+#ifndef AGG_GAMMA_LUT_INCLUDED
+#define AGG_GAMMA_LUT_INCLUDED
+
+#include <math.h>
+#include "agg_basics.h"
+#include "agg_gamma_functions.h"
+
+namespace agg
+{
+    template<class LoResT=int8u, 
+             class HiResT=int8u, 
+             unsigned GammaShift=8, 
+             unsigned HiResShift=8> class gamma_lut
+    {
+    public:
+        typedef gamma_lut<LoResT, HiResT, GammaShift, HiResShift> self_type;
+
+        enum gamma_scale_e
+        {
+            gamma_shift = GammaShift,
+            gamma_size  = 1 << gamma_shift,
+            gamma_mask  = gamma_size - 1
+        };
+
+        enum hi_res_scale_e
+        {
+            hi_res_shift = HiResShift,
+            hi_res_size  = 1 << hi_res_shift,
+            hi_res_mask  = hi_res_size - 1
+        };
+
+        ~gamma_lut()
+        {
+            pod_allocator<LoResT>::deallocate(m_inv_gamma, hi_res_size);
+            pod_allocator<HiResT>::deallocate(m_dir_gamma, gamma_size);
+        }
+
+        gamma_lut() : 
+            m_gamma(1.0), 
+            m_dir_gamma(pod_allocator<HiResT>::allocate(gamma_size)),
+            m_inv_gamma(pod_allocator<LoResT>::allocate(hi_res_size))
+        {
+            unsigned i;
+            for(i = 0; i < gamma_size; i++)
+            {
+                m_dir_gamma[i] = HiResT(i << (hi_res_shift - gamma_shift));
+            }
+
+            for(i = 0; i < hi_res_size; i++)
+            {
+                m_inv_gamma[i] = LoResT(i >> (hi_res_shift - gamma_shift));
+            }
+        }
+
+        gamma_lut(double g) :
+            m_gamma(1.0), 
+            m_dir_gamma(pod_allocator<HiResT>::allocate(gamma_size)),
+            m_inv_gamma(pod_allocator<LoResT>::allocate(hi_res_size))
+        {
+            gamma(g);
+        }
+
+        void gamma(double g) 
+        {
+            m_gamma = g;
+
+            unsigned i;
+            for(i = 0; i < gamma_size; i++)
+            {
+                m_dir_gamma[i] = (HiResT)
+                    uround(pow(i / double(gamma_mask), m_gamma) * double(hi_res_mask));
+            }
+
+            double inv_g = 1.0 / g;
+            for(i = 0; i < hi_res_size; i++)
+            {
+                m_inv_gamma[i] = (LoResT)
+                    uround(pow(i / double(hi_res_mask), inv_g) * double(gamma_mask));
+            }
+        }
+
+        double gamma() const
+        {
+            return m_gamma;
+        }
+
+        HiResT dir(LoResT v) const 
+        { 
+            return m_dir_gamma[unsigned(v)]; 
+        }
+
+        LoResT inv(HiResT v) const 
+        { 
+            return m_inv_gamma[unsigned(v)];
+        }
+
+    private:
+        gamma_lut(const self_type&);
+        const self_type& operator = (const self_type&);
+
+        double m_gamma;
+        HiResT* m_dir_gamma;
+        LoResT* m_inv_gamma;
+    };
+
+    //
+    // sRGB support classes
+    //
+
+    // sRGB_lut - implements sRGB conversion for the various types.
+    // Base template is undefined, specializations are provided below.
+    template<class LinearType>
+    class sRGB_lut;
+
+    template<>
+    class sRGB_lut<float>
+    {
+    public:
+		sRGB_lut()
+		{
+			// Generate lookup tables.
+			for (int i = 0; i <= 255; ++i)
+			{
+				m_dir_table[i] = float(sRGB_to_linear(i / 255.0));
+			}
+			for (int i = 0; i <= 65535; ++i)
+			{
+				m_inv_table[i] = uround(255.0 * linear_to_sRGB(i / 65535.0));
+			}
+		}
+
+		float dir(int8u v) const
+		{
+			return m_dir_table[v];
+		}
+
+		int8u inv(float v) const
+		{
+			return m_inv_table[int16u(0.5 + v * 65535)];
+		}
+
+	private:
+		float m_dir_table[256];
+		int8u m_inv_table[65536];
+    };
+
+    template<>
+    class sRGB_lut<int16u>
+    {
+    public:
+        sRGB_lut()
+        {
+            // Generate lookup tables.
+            for (int i = 0; i <= 255; ++i)
+            {
+                m_dir_table[i] = uround(65535.0 * sRGB_to_linear(i / 255.0));
+            }
+			for (int i = 0; i <= 65535; ++i)
+			{
+				m_inv_table[i] = uround(255.0 * linear_to_sRGB(i / 65535.0));
+			}
+		}
+
+		int16u dir(int8u v) const
+		{
+			return m_dir_table[v];
+		}
+
+		int8u inv(int16u v) const
+		{
+			return m_inv_table[v];
+		}
+
+	private:
+		int16u m_dir_table[256];
+		int8u m_inv_table[65536];
+	};
+
+    template<>
+    class sRGB_lut<int8u>
+    {
+    public:
+        sRGB_lut()
+        {
+            // Generate lookup tables. 
+            for (int i = 0; i <= 255; ++i)
+            {
+                m_dir_table[i] = uround(255.0 * sRGB_to_linear(i / 255.0));
+                m_inv_table[i] = uround(255.0 * linear_to_sRGB(i / 255.0));
+            }
+        }
+
+		int8u dir(int8u v) const
+		{
+			return m_dir_table[v];
+		}
+
+		int8u inv(int8u v) const
+        {
+            return m_inv_table[v];
+        }
+
+	private:
+		int8u m_dir_table[256];
+		int8u m_inv_table[256];
+	};
+
+    // Common base class for sRGB_conv objects. Defines an internal 
+    // sRGB_lut object so that users don't have to.
+    template<class T>
+    class sRGB_conv_base
+    {
+    public:
+        static T rgb_from_sRGB(int8u x)
+        {
+            return lut.dir(x);
+        }
+
+        static int8u rgb_to_sRGB(T x)
+        {
+            return lut.inv(x);
+        }
+
+    private:
+        static sRGB_lut<T> lut;
+    };
+
+    // Definition of sRGB_conv_base::lut. Due to the fact that this a template, 
+    // we don't need to place the definition in a cpp file. Hurrah.
+    template<class T>
+    sRGB_lut<T> sRGB_conv_base<T>::lut;
+
+    // Wrapper for sRGB-linear conversion. 
+    // Base template is undefined, specializations are provided below.
+    template<class T>
+    class sRGB_conv;
+
+    template<>
+    class sRGB_conv<float> : public sRGB_conv_base<float>
+    {
+    public:
+        static float alpha_from_sRGB(int8u x)
+        {
+			static const double y = 1 / 255.0;
+            return float(x * y);
+        }
+
+        static int8u alpha_to_sRGB(float x)
+        {
+            return int8u(0.5 + x * 255);
+        }
+    };
+
+    template<>
+    class sRGB_conv<int16u> : public sRGB_conv_base<int16u>
+    {
+    public:
+        static int16u alpha_from_sRGB(int8u x)
+        {
+            return (x << 8) | x;
+        }
+
+        static int8u alpha_to_sRGB(int16u x)
+        {
+            return x >> 8;
+        }
+    };
+
+    template<>
+    class sRGB_conv<int8u> : public sRGB_conv_base<int8u>
+    {
+    public:
+        static int8u alpha_from_sRGB(int8u x)
+        {
+            return x;
+        }
+
+        static int8u alpha_to_sRGB(int8u x)
+        {
+            return x;
+        }
+    };
+}
+
+#endif

deps_src/agg/agg_math.h

@@ -0,0 +1,437 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+// Bessel function (besj) was adapted for use in AGG library by Andy Wilk 
+// Contact: castor.vulgaris@gmail.com
+//----------------------------------------------------------------------------
+
+#ifndef AGG_MATH_INCLUDED
+#define AGG_MATH_INCLUDED
+
+#include <math.h>
+#include "agg_basics.h"
+
+namespace agg
+{
+
+    //------------------------------------------------------vertex_dist_epsilon
+    // Coinciding points maximal distance (Epsilon)
+    const double vertex_dist_epsilon = 1e-14;
+
+    //-----------------------------------------------------intersection_epsilon
+    // See calc_intersection
+    const double intersection_epsilon = 1.0e-30;
+
+    //------------------------------------------------------------cross_product
+    AGG_INLINE double cross_product(double x1, double y1, 
+                                    double x2, double y2, 
+                                    double x,  double y)
+    {
+        return (x - x2) * (y2 - y1) - (y - y2) * (x2 - x1);
+    }
+
+    //--------------------------------------------------------point_in_triangle
+    AGG_INLINE bool point_in_triangle(double x1, double y1, 
+                                      double x2, double y2, 
+                                      double x3, double y3, 
+                                      double x,  double y)
+    {
+        bool cp1 = cross_product(x1, y1, x2, y2, x, y) < 0.0;
+        bool cp2 = cross_product(x2, y2, x3, y3, x, y) < 0.0;
+        bool cp3 = cross_product(x3, y3, x1, y1, x, y) < 0.0;
+        return cp1 == cp2 && cp2 == cp3 && cp3 == cp1;
+    }
+
+    //-----------------------------------------------------------calc_distance
+    AGG_INLINE double calc_distance(double x1, double y1, double x2, double y2)
+    {
+        double dx = x2-x1;
+        double dy = y2-y1;
+        return sqrt(dx * dx + dy * dy);
+    }
+
+    //--------------------------------------------------------calc_sq_distance
+    AGG_INLINE double calc_sq_distance(double x1, double y1, double x2, double y2)
+    {
+        double dx = x2-x1;
+        double dy = y2-y1;
+        return dx * dx + dy * dy;
+    }
+
+    //------------------------------------------------calc_line_point_distance
+    AGG_INLINE double calc_line_point_distance(double x1, double y1, 
+                                               double x2, double y2, 
+                                               double x,  double y)
+    {
+        double dx = x2-x1;
+        double dy = y2-y1;
+        double d = sqrt(dx * dx + dy * dy);
+        if(d < vertex_dist_epsilon)
+        {
+            return calc_distance(x1, y1, x, y);
+        }
+        return ((x - x2) * dy - (y - y2) * dx) / d;
+    }
+
+    //-------------------------------------------------------calc_line_point_u
+    AGG_INLINE double calc_segment_point_u(double x1, double y1, 
+                                           double x2, double y2, 
+                                           double x,  double y)
+    {
+        double dx = x2 - x1;
+        double dy = y2 - y1;
+
+        if(dx == 0 && dy == 0)
+        {
+	        return 0;
+        }
+
+        double pdx = x - x1;
+        double pdy = y - y1;
+
+        return (pdx * dx + pdy * dy) / (dx * dx + dy * dy);
+    }
+
+    //---------------------------------------------calc_line_point_sq_distance
+    AGG_INLINE double calc_segment_point_sq_distance(double x1, double y1, 
+                                                     double x2, double y2, 
+                                                     double x,  double y,
+                                                     double u)
+    {
+        if(u <= 0)
+        {
+	        return calc_sq_distance(x, y, x1, y1);
+        }
+        else 
+        if(u >= 1)
+        {
+	        return calc_sq_distance(x, y, x2, y2);
+        }
+        return calc_sq_distance(x, y, x1 + u * (x2 - x1), y1 + u * (y2 - y1));
+    }
+
+    //---------------------------------------------calc_line_point_sq_distance
+    AGG_INLINE double calc_segment_point_sq_distance(double x1, double y1, 
+                                                     double x2, double y2, 
+                                                     double x,  double y)
+    {
+        return 
+            calc_segment_point_sq_distance(
+                x1, y1, x2, y2, x, y,
+                calc_segment_point_u(x1, y1, x2, y2, x, y));
+    }
+
+    //-------------------------------------------------------calc_intersection
+    AGG_INLINE bool calc_intersection(double ax, double ay, double bx, double by,
+                                      double cx, double cy, double dx, double dy,
+                                      double* x, double* y)
+    {
+        double num = (ay-cy) * (dx-cx) - (ax-cx) * (dy-cy);
+        double den = (bx-ax) * (dy-cy) - (by-ay) * (dx-cx);
+        if(fabs(den) < intersection_epsilon) return false;
+        double r = num / den;
+        *x = ax + r * (bx-ax);
+        *y = ay + r * (by-ay);
+        return true;
+    }
+
+    //-----------------------------------------------------intersection_exists
+    AGG_INLINE bool intersection_exists(double x1, double y1, double x2, double y2,
+                                        double x3, double y3, double x4, double y4)
+    {
+        // It's less expensive but you can't control the 
+        // boundary conditions: Less or LessEqual
+        double dx1 = x2 - x1;
+        double dy1 = y2 - y1;
+        double dx2 = x4 - x3;
+        double dy2 = y4 - y3;
+        return ((x3 - x2) * dy1 - (y3 - y2) * dx1 < 0.0) != 
+               ((x4 - x2) * dy1 - (y4 - y2) * dx1 < 0.0) &&
+               ((x1 - x4) * dy2 - (y1 - y4) * dx2 < 0.0) !=
+               ((x2 - x4) * dy2 - (y2 - y4) * dx2 < 0.0);
+
+        // It's is more expensive but more flexible 
+        // in terms of boundary conditions.
+        //--------------------
+        //double den  = (x2-x1) * (y4-y3) - (y2-y1) * (x4-x3);
+        //if(fabs(den) < intersection_epsilon) return false;
+        //double nom1 = (x4-x3) * (y1-y3) - (y4-y3) * (x1-x3);
+        //double nom2 = (x2-x1) * (y1-y3) - (y2-y1) * (x1-x3);
+        //double ua = nom1 / den;
+        //double ub = nom2 / den;
+        //return ua >= 0.0 && ua <= 1.0 && ub >= 0.0 && ub <= 1.0;
+    }
+
+    //--------------------------------------------------------calc_orthogonal
+    AGG_INLINE void calc_orthogonal(double thickness,
+                                    double x1, double y1,
+                                    double x2, double y2,
+                                    double* x, double* y)
+    {
+        double dx = x2 - x1;
+        double dy = y2 - y1;
+        double d = sqrt(dx*dx + dy*dy); 
+        *x =  thickness * dy / d;
+        *y = -thickness * dx / d;
+    }
+
+    //--------------------------------------------------------dilate_triangle
+    AGG_INLINE void dilate_triangle(double x1, double y1,
+                                    double x2, double y2,
+                                    double x3, double y3,
+                                    double *x, double* y,
+                                    double d)
+    {
+        double dx1=0.0;
+        double dy1=0.0; 
+        double dx2=0.0;
+        double dy2=0.0; 
+        double dx3=0.0;
+        double dy3=0.0; 
+        double loc = cross_product(x1, y1, x2, y2, x3, y3);
+        if(fabs(loc) > intersection_epsilon)
+        {
+            if(cross_product(x1, y1, x2, y2, x3, y3) > 0.0) 
+            {
+                d = -d;
+            }
+            calc_orthogonal(d, x1, y1, x2, y2, &dx1, &dy1);
+            calc_orthogonal(d, x2, y2, x3, y3, &dx2, &dy2);
+            calc_orthogonal(d, x3, y3, x1, y1, &dx3, &dy3);
+        }
+        *x++ = x1 + dx1;  *y++ = y1 + dy1;
+        *x++ = x2 + dx1;  *y++ = y2 + dy1;
+        *x++ = x2 + dx2;  *y++ = y2 + dy2;
+        *x++ = x3 + dx2;  *y++ = y3 + dy2;
+        *x++ = x3 + dx3;  *y++ = y3 + dy3;
+        *x++ = x1 + dx3;  *y++ = y1 + dy3;
+    }
+
+    //------------------------------------------------------calc_triangle_area
+    AGG_INLINE double calc_triangle_area(double x1, double y1,
+                                         double x2, double y2,
+                                         double x3, double y3)
+    {
+        return (x1*y2 - x2*y1 + x2*y3 - x3*y2 + x3*y1 - x1*y3) * 0.5;
+    }
+
+    //-------------------------------------------------------calc_polygon_area
+    template<class Storage> double calc_polygon_area(const Storage& st)
+    {
+        unsigned i;
+        double sum = 0.0;
+        double x  = st[0].x;
+        double y  = st[0].y;
+        double xs = x;
+        double ys = y;
+
+        for(i = 1; i < st.size(); i++)
+        {
+            const typename Storage::value_type& v = st[i];
+            sum += x * v.y - y * v.x;
+            x = v.x;
+            y = v.y;
+        }
+        return (sum + x * ys - y * xs) * 0.5;
+    }
+
+    //------------------------------------------------------------------------
+    // Tables for fast sqrt
+    extern int16u g_sqrt_table[1024];
+    extern int8   g_elder_bit_table[256];
+
+
+    //---------------------------------------------------------------fast_sqrt
+    //Fast integer Sqrt - really fast: no cycles, divisions or multiplications
+    #if defined(_MSC_VER)
+    #pragma warning(push)
+    #pragma warning(disable : 4035) //Disable warning "no return value"
+    #endif
+    AGG_INLINE unsigned fast_sqrt(unsigned val)
+    {
+    #if defined(_M_IX86) && defined(_MSC_VER) && !defined(AGG_NO_ASM)
+        //For Ix86 family processors this assembler code is used. 
+        //The key command here is bsr - determination the number of the most 
+        //significant bit of the value. For other processors
+        //(and maybe compilers) the pure C "#else" section is used.
+        __asm
+        {
+            mov ebx, val
+            mov edx, 11
+            bsr ecx, ebx
+            sub ecx, 9
+            jle less_than_9_bits
+            shr ecx, 1
+            adc ecx, 0
+            sub edx, ecx
+            shl ecx, 1
+            shr ebx, cl
+    less_than_9_bits:
+            xor eax, eax
+            mov  ax, g_sqrt_table[ebx*2]
+            mov ecx, edx
+            shr eax, cl
+        }
+    #else
+
+        //This code is actually pure C and portable to most 
+        //arcitectures including 64bit ones. 
+        unsigned t = val;
+        int bit=0;
+        unsigned shift = 11;
+
+        //The following piece of code is just an emulation of the
+        //Ix86 assembler command "bsr" (see above). However on old
+        //Intels (like Intel MMX 233MHz) this code is about twice 
+        //faster (sic!) then just one "bsr". On PIII and PIV the
+        //bsr is optimized quite well.
+        bit = t >> 24;
+        if(bit)
+        {
+            bit = g_elder_bit_table[bit] + 24;
+        }
+        else
+        {
+            bit = (t >> 16) & 0xFF;
+            if(bit)
+            {
+                bit = g_elder_bit_table[bit] + 16;
+            }
+            else
+            {
+                bit = (t >> 8) & 0xFF;
+                if(bit)
+                {
+                    bit = g_elder_bit_table[bit] + 8;
+                }
+                else
+                {
+                    bit = g_elder_bit_table[t];
+                }
+            }
+        }
+
+        //This code calculates the sqrt.
+        bit -= 9;
+        if(bit > 0)
+        {
+            bit = (bit >> 1) + (bit & 1);
+            shift -= bit;
+            val >>= (bit << 1);
+        }
+        return g_sqrt_table[val] >> shift;
+    #endif
+    }
+    #if defined(_MSC_VER)
+    #pragma warning(pop)
+    #endif
+
+
+
+
+    //--------------------------------------------------------------------besj
+    // Function BESJ calculates Bessel function of first kind of order n
+    // Arguments:
+    //     n - an integer (>=0), the order
+    //     x - value at which the Bessel function is required
+    //--------------------
+    // C++ Mathematical Library
+    // Convereted from equivalent FORTRAN library
+    // Converetd by Gareth Walker for use by course 392 computational project
+    // All functions tested and yield the same results as the corresponding
+    // FORTRAN versions.
+    //
+    // If you have any problems using these functions please report them to
+    // M.Muldoon@UMIST.ac.uk
+    //
+    // Documentation available on the web
+    // http://www.ma.umist.ac.uk/mrm/Teaching/392/libs/392.html
+    // Version 1.0   8/98
+    // 29 October, 1999
+    //--------------------
+    // Adapted for use in AGG library by Andy Wilk (castor.vulgaris@gmail.com)
+    //------------------------------------------------------------------------
+    inline double besj(double x, int n)
+    {
+        if(n < 0)
+        {
+            return 0;
+        }
+        double d = 1E-6;
+        double b = 0;
+        if(fabs(x) <= d) 
+        {
+            if(n != 0) return 0;
+            return 1;
+        }
+        double b1 = 0; // b1 is the value from the previous iteration
+        // Set up a starting order for recurrence
+        int m1 = (int)fabs(x) + 6;
+        if(fabs(x) > 5) 
+        {
+            m1 = (int)(fabs(1.4 * x + 60 / x));
+        }
+        int m2 = (int)(n + 2 + fabs(x) / 4);
+        if (m1 > m2) 
+        {
+            m2 = m1;
+        }
+    
+        // Apply recurrence down from curent max order
+        for(;;) 
+        {
+            double c3 = 0;
+            double c2 = 1E-30;
+            double c4 = 0;
+            int m8 = 1;
+            if (m2 / 2 * 2 == m2) 
+            {
+                m8 = -1;
+            }
+            int imax = m2 - 2;
+            for (int i = 1; i <= imax; i++) 
+            {
+                double c6 = 2 * (m2 - i) * c2 / x - c3;
+                c3 = c2;
+                c2 = c6;
+                if(m2 - i - 1 == n)
+                {
+                    b = c6;
+                }
+                m8 = -1 * m8;
+                if (m8 > 0)
+                {
+                    c4 = c4 + 2 * c6;
+                }
+            }
+            double c6 = 2 * c2 / x - c3;
+            if(n == 0)
+            {
+                b = c6;
+            }
+            c4 += c6;
+            b /= c4;
+            if(fabs(b - b1) < d)
+            {
+                return b;
+            }
+            b1 = b;
+            m2 += 3;
+        }
+    }
+
+}
+
+
+#endif

deps_src/agg/agg_pixfmt_base.h

@@ -0,0 +1,97 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+
+#ifndef AGG_PIXFMT_BASE_INCLUDED
+#define AGG_PIXFMT_BASE_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_color_gray.h"
+#include "agg_color_rgba.h"
+
+namespace agg
+{
+    struct pixfmt_gray_tag
+    {
+    };
+
+    struct pixfmt_rgb_tag
+    {
+    };
+
+    struct pixfmt_rgba_tag
+    {
+    };
+
+    //--------------------------------------------------------------blender_base
+    template<class ColorT, class Order = void> 
+    struct blender_base
+    {
+        typedef ColorT color_type;
+        typedef Order order_type;
+        typedef typename color_type::value_type value_type;
+
+        static rgba get(value_type r, value_type g, value_type b, value_type a, cover_type cover = cover_full)
+        {
+            if (cover > cover_none)
+            {
+                rgba c(
+                    color_type::to_double(r), 
+                    color_type::to_double(g), 
+                    color_type::to_double(b), 
+                    color_type::to_double(a));
+
+                if (cover < cover_full)
+                {
+                    double x = double(cover) / cover_full;
+                    c.r *= x;
+                    c.g *= x;
+                    c.b *= x;
+                    c.a *= x;
+                }
+
+                return c;
+            }
+            else return rgba::no_color();
+        }
+
+        static rgba get(const value_type* p, cover_type cover = cover_full)
+        {
+            return get(
+                p[order_type::R], 
+                p[order_type::G], 
+                p[order_type::B], 
+                p[order_type::A], 
+                cover);
+        }
+
+        static void set(value_type* p, value_type r, value_type g, value_type b, value_type a)
+        {
+            p[order_type::R] = r;
+            p[order_type::G] = g;
+            p[order_type::B] = b;
+            p[order_type::A] = a;
+        }
+
+        static void set(value_type* p, const rgba& c)
+        {
+            p[order_type::R] = color_type::from_double(c.r);
+            p[order_type::G] = color_type::from_double(c.g);
+            p[order_type::B] = color_type::from_double(c.b);
+            p[order_type::A] = color_type::from_double(c.a);
+        }
+    };
+}
+
+#endif

deps_src/agg/agg_pixfmt_gray.h

@@ -0,0 +1,738 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Adaptation for high precision colors has been sponsored by 
+// Liberty Technology Systems, Inc., visit http://lib-sys.com
+//
+// Liberty Technology Systems, Inc. is the provider of
+// PostScript and PDF technology for software developers.
+// 
+//----------------------------------------------------------------------------
+
+#ifndef AGG_PIXFMT_GRAY_INCLUDED
+#define AGG_PIXFMT_GRAY_INCLUDED
+
+#include <string.h>
+#include "agg_pixfmt_base.h"
+#include "agg_rendering_buffer.h"
+
+namespace agg
+{
+ 
+    //============================================================blender_gray
+    template<class ColorT> struct blender_gray
+    {
+        typedef ColorT color_type;
+        typedef typename color_type::value_type value_type;
+        typedef typename color_type::calc_type calc_type;
+        typedef typename color_type::long_type long_type;
+
+        // Blend pixels using the non-premultiplied form of Alvy-Ray Smith's
+        // compositing function. Since the render buffer is opaque we skip the
+        // initial premultiply and final demultiply.
+
+        static AGG_INLINE void blend_pix(value_type* p, 
+            value_type cv, value_type alpha, cover_type cover)
+        {
+            blend_pix(p, cv, color_type::mult_cover(alpha, cover));
+        }
+
+        static AGG_INLINE void blend_pix(value_type* p, 
+            value_type cv, value_type alpha)
+        {
+            *p = color_type::lerp(*p, cv, alpha);
+        }
+    };
+
+
+    //======================================================blender_gray_pre
+    template<class ColorT> struct blender_gray_pre
+    {
+        typedef ColorT color_type;
+        typedef typename color_type::value_type value_type;
+        typedef typename color_type::calc_type calc_type;
+        typedef typename color_type::long_type long_type;
+
+        // Blend pixels using the premultiplied form of Alvy-Ray Smith's
+        // compositing function. 
+
+        static AGG_INLINE void blend_pix(value_type* p, 
+            value_type cv, value_type alpha, cover_type cover)
+        {
+            blend_pix(p, color_type::mult_cover(cv, cover), color_type::mult_cover(alpha, cover));
+        }
+
+        static AGG_INLINE void blend_pix(value_type* p, 
+            value_type cv, value_type alpha)
+        {
+            *p = color_type::prelerp(*p, cv, alpha);
+        }
+    };
+    
+
+
+    //=====================================================apply_gamma_dir_gray
+    template<class ColorT, class GammaLut> class apply_gamma_dir_gray
+    {
+    public:
+        typedef typename ColorT::value_type value_type;
+
+        apply_gamma_dir_gray(const GammaLut& gamma) : m_gamma(gamma) {}
+
+        AGG_INLINE void operator () (value_type* p)
+        {
+            *p = m_gamma.dir(*p);
+        }
+
+    private:
+        const GammaLut& m_gamma;
+    };
+
+
+
+    //=====================================================apply_gamma_inv_gray
+    template<class ColorT, class GammaLut> class apply_gamma_inv_gray
+    {
+    public:
+        typedef typename ColorT::value_type value_type;
+
+        apply_gamma_inv_gray(const GammaLut& gamma) : m_gamma(gamma) {}
+
+        AGG_INLINE void operator () (value_type* p)
+        {
+            *p = m_gamma.inv(*p);
+        }
+
+    private:
+        const GammaLut& m_gamma;
+    };
+
+
+
+    //=================================================pixfmt_alpha_blend_gray
+    template<class Blender, class RenBuf, unsigned Step = 1, unsigned Offset = 0>
+    class pixfmt_alpha_blend_gray
+    {
+    public:
+        typedef pixfmt_gray_tag pixfmt_category;
+        typedef RenBuf   rbuf_type;
+        typedef typename rbuf_type::row_data row_data;
+        typedef Blender  blender_type;
+        typedef typename blender_type::color_type color_type;
+        typedef int                               order_type; // A fake one
+        typedef typename color_type::value_type   value_type;
+        typedef typename color_type::calc_type    calc_type;
+        enum 
+        {
+            num_components = 1,
+            pix_width = sizeof(value_type) * Step,
+            pix_step = Step,
+            pix_offset = Offset,
+        };
+        struct pixel_type
+        {
+            value_type c[num_components];
+
+            void set(value_type v)
+            {
+                c[0] = v;
+            }
+
+            void set(const color_type& color)
+            {
+                set(color.v);
+            }
+
+            void get(value_type& v) const
+            {
+                v = c[0];
+            }
+
+            color_type get() const
+            {
+                return color_type(c[0]);
+            }
+
+            pixel_type* next()
+            {
+                return (pixel_type*)(c + pix_step);
+            }
+
+            const pixel_type* next() const
+            {
+                return (const pixel_type*)(c + pix_step);
+            }
+
+            pixel_type* advance(int n)
+            {
+                return (pixel_type*)(c + n * pix_step);
+            }
+
+            const pixel_type* advance(int n) const
+            {
+                return (const pixel_type*)(c + n * pix_step);
+            }
+        };
+
+    private:
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pix(pixel_type* p, 
+            value_type v, value_type a, 
+            unsigned cover)
+        {
+            blender_type::blend_pix(p->c, v, a, cover);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pix(pixel_type* p, value_type v, value_type a)
+        {
+            blender_type::blend_pix(p->c, v, a);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pix(pixel_type* p, const color_type& c, unsigned cover)
+        {
+            blender_type::blend_pix(p->c, c.v, c.a, cover);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pix(pixel_type* p, const color_type& c)
+        {
+            blender_type::blend_pix(p->c, c.v, c.a);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void copy_or_blend_pix(pixel_type* p, const color_type& c, unsigned cover)
+        {
+            if (!c.is_transparent())
+            {
+                if (c.is_opaque() && cover == cover_mask)
+                {
+                    p->set(c);
+                }
+                else
+                {
+                    blend_pix(p, c, cover);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void copy_or_blend_pix(pixel_type* p, const color_type& c)
+        {
+            if (!c.is_transparent())
+            {
+                if (c.is_opaque())
+                {
+                    p->set(c);
+                }
+                else
+                {
+                    blend_pix(p, c);
+                }
+            }
+        }
+
+    public:
+        //--------------------------------------------------------------------
+        explicit pixfmt_alpha_blend_gray(rbuf_type& rb) :
+            m_rbuf(&rb)
+        {}
+        void attach(rbuf_type& rb) { m_rbuf = &rb; }
+        //--------------------------------------------------------------------
+
+        template<class PixFmt>
+        bool attach(PixFmt& pixf, int x1, int y1, int x2, int y2)
+        {
+            rect_i r(x1, y1, x2, y2);
+            if (r.clip(rect_i(0, 0, pixf.width()-1, pixf.height()-1)))
+            {
+                int stride = pixf.stride();
+                m_rbuf->attach(pixf.pix_ptr(r.x1, stride < 0 ? r.y2 : r.y1), 
+                               (r.x2 - r.x1) + 1,
+                               (r.y2 - r.y1) + 1,
+                               stride);
+                return true;
+            }
+            return false;
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE unsigned width()  const { return m_rbuf->width();  }
+        AGG_INLINE unsigned height() const { return m_rbuf->height(); }
+        AGG_INLINE int      stride() const { return m_rbuf->stride(); }
+
+        //--------------------------------------------------------------------
+        int8u* row_ptr(int y)       { return m_rbuf->row_ptr(y); }
+        const int8u* row_ptr(int y) const { return m_rbuf->row_ptr(y); }
+        row_data     row(int y)     const { return m_rbuf->row(y); }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE int8u* pix_ptr(int x, int y) 
+        { 
+            return m_rbuf->row_ptr(y) + sizeof(value_type) * (x * pix_step + pix_offset);
+        }
+
+        AGG_INLINE const int8u* pix_ptr(int x, int y) const 
+        { 
+            return m_rbuf->row_ptr(y) + sizeof(value_type) * (x * pix_step + pix_offset);
+        }
+
+        // Return pointer to pixel value, forcing row to be allocated.
+        AGG_INLINE pixel_type* pix_value_ptr(int x, int y, unsigned len) 
+        {
+            return (pixel_type*)(m_rbuf->row_ptr(x, y, len) + sizeof(value_type) * (x * pix_step + pix_offset));
+        }
+
+        // Return pointer to pixel value, or null if row not allocated.
+        AGG_INLINE const pixel_type* pix_value_ptr(int x, int y) const 
+        {
+            int8u* p = m_rbuf->row_ptr(y);
+            return p ? (pixel_type*)(p + sizeof(value_type) * (x * pix_step + pix_offset)) : 0;
+        }
+
+        // Get pixel pointer from raw buffer pointer.
+        AGG_INLINE static pixel_type* pix_value_ptr(void* p) 
+        {
+            return (pixel_type*)((value_type*)p + pix_offset);
+        }
+
+        // Get pixel pointer from raw buffer pointer.
+        AGG_INLINE static const pixel_type* pix_value_ptr(const void* p) 
+        {
+            return (const pixel_type*)((const value_type*)p + pix_offset);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE static void write_plain_color(void* p, color_type c)
+        {
+            // Grayscale formats are implicitly premultiplied.
+            c.premultiply();
+            pix_value_ptr(p)->set(c);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE static color_type read_plain_color(const void* p)
+        {
+            return pix_value_ptr(p)->get();
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE static void make_pix(int8u* p, const color_type& c)
+        {
+            ((pixel_type*)p)->set(c);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE color_type pixel(int x, int y) const
+        {
+            if (const pixel_type* p = pix_value_ptr(x, y))
+            {
+                return p->get();
+            }
+            return color_type::no_color();
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void copy_pixel(int x, int y, const color_type& c)
+        {
+            pix_value_ptr(x, y, 1)->set(c);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pixel(int x, int y, const color_type& c, int8u cover)
+        {
+            copy_or_blend_pix(pix_value_ptr(x, y, 1), c, cover);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void copy_hline(int x, int y, 
+                                   unsigned len, 
+                                   const color_type& c)
+        {
+            pixel_type* p = pix_value_ptr(x, y, len);
+            do
+            {
+                p->set(c);
+                p = p->next();
+            }
+            while(--len);
+        }
+
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void copy_vline(int x, int y,
+                                   unsigned len, 
+                                   const color_type& c)
+        {
+            do
+            {
+                pix_value_ptr(x, y++, 1)->set(c);
+            }
+            while (--len);
+        }
+
+
+        //--------------------------------------------------------------------
+        void blend_hline(int x, int y,
+                         unsigned len, 
+                         const color_type& c,
+                         int8u cover)
+        {
+            if (!c.is_transparent())
+            {
+                pixel_type* p = pix_value_ptr(x, y, len);
+
+                if (c.is_opaque() && cover == cover_mask)
+                {
+                    do
+                    {
+                        p->set(c);
+                        p = p->next();
+                    }
+                    while (--len);
+                }
+                else
+                {
+                    do
+                    {
+                        blend_pix(p, c, cover);
+                        p = p->next();
+                    }
+                    while (--len);
+                }
+            }
+        }
+
+
+        //--------------------------------------------------------------------
+        void blend_vline(int x, int y,
+                         unsigned len, 
+                         const color_type& c,
+                         int8u cover)
+        {
+            if (!c.is_transparent())
+            {
+                if (c.is_opaque() && cover == cover_mask)
+                {
+                    do
+                    {
+                        pix_value_ptr(x, y++, 1)->set(c);
+                    }
+                    while (--len);
+                }
+                else
+                {
+                    do
+                    {
+                        blend_pix(pix_value_ptr(x, y++, 1), c, cover);
+                    }
+                    while (--len);
+                }
+            }
+        }
+
+
+        //--------------------------------------------------------------------
+        void blend_solid_hspan(int x, int y,
+                               unsigned len, 
+                               const color_type& c,
+                               const int8u* covers)
+        {
+            if (!c.is_transparent())
+            {
+                pixel_type* p = pix_value_ptr(x, y, len);
+
+                do 
+                {
+                    if (c.is_opaque() && *covers == cover_mask)
+                    {
+                        p->set(c);
+                    }
+                    else
+                    {
+                        blend_pix(p, c, *covers);
+                    }
+                    p = p->next();
+                    ++covers;
+                }
+                while (--len);
+            }
+        }
+
+
+        //--------------------------------------------------------------------
+        void blend_solid_vspan(int x, int y,
+                               unsigned len, 
+                               const color_type& c,
+                               const int8u* covers)
+        {
+            if (!c.is_transparent())
+            {
+                do 
+                {
+                    pixel_type* p = pix_value_ptr(x, y++, 1);
+
+                    if (c.is_opaque() && *covers == cover_mask)
+                    {
+                        p->set(c);
+                    }
+                    else
+                    {
+                        blend_pix(p, c, *covers);
+                    }
+                    ++covers;
+                }
+                while (--len);
+            }
+        }
+
+
+        //--------------------------------------------------------------------
+        void copy_color_hspan(int x, int y,
+                              unsigned len, 
+                              const color_type* colors)
+        {
+            pixel_type* p = pix_value_ptr(x, y, len);
+
+            do 
+            {
+                p->set(*colors++);
+                p = p->next();
+            }
+            while (--len);
+        }
+
+
+        //--------------------------------------------------------------------
+        void copy_color_vspan(int x, int y,
+                              unsigned len, 
+                              const color_type* colors)
+        {
+            do 
+            {
+                pix_value_ptr(x, y++, 1)->set(*colors++);
+            }
+            while (--len);
+        }
+
+
+        //--------------------------------------------------------------------
+        void blend_color_hspan(int x, int y,
+                               unsigned len, 
+                               const color_type* colors,
+                               const int8u* covers,
+                               int8u cover)
+        {
+            pixel_type* p = pix_value_ptr(x, y, len);
+
+            if (covers)
+            {
+                do 
+                {
+                    copy_or_blend_pix(p, *colors++, *covers++);
+                    p = p->next();
+                }
+                while (--len);
+            }
+            else
+            {
+                if (cover == cover_mask)
+                {
+                    do 
+                    {
+                        copy_or_blend_pix(p, *colors++);
+                        p = p->next();
+                    }
+                    while (--len);
+                }
+                else
+                {
+                    do 
+                    {
+                        copy_or_blend_pix(p, *colors++, cover);
+                        p = p->next();
+                    }
+                    while (--len);
+                }
+            }
+        }
+        
+
+        //--------------------------------------------------------------------
+        void blend_color_vspan(int x, int y,
+                               unsigned len, 
+                               const color_type* colors,
+                               const int8u* covers,
+                               int8u cover)
+        {
+            if (covers)
+            {
+                do 
+                {
+                    copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++, *covers++);
+                }
+                while (--len);
+            }
+            else
+            {
+                if (cover == cover_mask)
+                {
+                    do 
+                    {
+                        copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++);
+                    }
+                    while (--len);
+                }
+                else
+                {
+                    do 
+                    {
+                        copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++, cover);
+                    }
+                    while (--len);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        template<class Function> void for_each_pixel(Function f)
+        {
+            unsigned y;
+            for (y = 0; y < height(); ++y)
+            {
+                row_data r = m_rbuf->row(y);
+                if (r.ptr)
+                {
+                    unsigned len = r.x2 - r.x1 + 1;
+                    pixel_type* p = pix_value_ptr(r.x1, y, len);
+                    do
+                    {
+                        f(p->c);
+                        p = p->next();
+                    }
+                    while (--len);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        template<class GammaLut> void apply_gamma_dir(const GammaLut& g)
+        {
+            for_each_pixel(apply_gamma_dir_gray<color_type, GammaLut>(g));
+        }
+
+        //--------------------------------------------------------------------
+        template<class GammaLut> void apply_gamma_inv(const GammaLut& g)
+        {
+            for_each_pixel(apply_gamma_inv_gray<color_type, GammaLut>(g));
+        }
+
+        //--------------------------------------------------------------------
+        template<class RenBuf2>
+        void copy_from(const RenBuf2& from, 
+                       int xdst, int ydst,
+                       int xsrc, int ysrc,
+                       unsigned len)
+        {
+            if (const int8u* p = from.row_ptr(ysrc))
+            {
+                memmove(m_rbuf->row_ptr(xdst, ydst, len) + xdst * pix_width, 
+                        p + xsrc * pix_width, 
+                        len * pix_width);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        // Blend from single color, using grayscale surface as alpha channel.
+        template<class SrcPixelFormatRenderer>
+        void blend_from_color(const SrcPixelFormatRenderer& from, 
+                              const color_type& color,
+                              int xdst, int ydst,
+                              int xsrc, int ysrc,
+                              unsigned len,
+                              int8u cover)
+        {
+            typedef typename SrcPixelFormatRenderer::pixel_type src_pixel_type;
+            typedef typename SrcPixelFormatRenderer::color_type src_color_type;
+
+            if (const src_pixel_type* psrc = from.pix_value_ptr(xsrc, ysrc))
+            {
+                pixel_type* pdst = pix_value_ptr(xdst, ydst, len);
+
+                do 
+                {
+                    copy_or_blend_pix(pdst, color, src_color_type::scale_cover(cover, psrc->c[0]));
+                    psrc = psrc->next();
+                    pdst = pdst->next();
+                }
+                while (--len);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        // Blend from color table, using grayscale surface as indexes into table.
+        // Obviously, this only works for integer value types.
+        template<class SrcPixelFormatRenderer>
+        void blend_from_lut(const SrcPixelFormatRenderer& from, 
+                            const color_type* color_lut,
+                            int xdst, int ydst,
+                            int xsrc, int ysrc,
+                            unsigned len,
+                            int8u cover)
+        {
+            typedef typename SrcPixelFormatRenderer::pixel_type src_pixel_type;
+
+            if (const src_pixel_type* psrc = from.pix_value_ptr(xsrc, ysrc))
+            {
+                pixel_type* pdst = pix_value_ptr(xdst, ydst, len);
+
+                do 
+                {
+                    copy_or_blend_pix(pdst, color_lut[psrc->c[0]], cover);
+                    psrc = psrc->next();
+                    pdst = pdst->next();
+                }
+                while (--len);
+            }
+        }
+
+    private:
+        rbuf_type* m_rbuf;
+    };
+
+    typedef blender_gray<gray8> blender_gray8;
+    typedef blender_gray<sgray8> blender_sgray8;
+    typedef blender_gray<gray16> blender_gray16;
+    typedef blender_gray<gray32> blender_gray32;
+
+    typedef blender_gray_pre<gray8> blender_gray8_pre;
+    typedef blender_gray_pre<sgray8> blender_sgray8_pre;
+    typedef blender_gray_pre<gray16> blender_gray16_pre;
+    typedef blender_gray_pre<gray32> blender_gray32_pre;
+
+    typedef pixfmt_alpha_blend_gray<blender_gray8, rendering_buffer> pixfmt_gray8;
+    typedef pixfmt_alpha_blend_gray<blender_sgray8, rendering_buffer> pixfmt_sgray8;
+    typedef pixfmt_alpha_blend_gray<blender_gray16, rendering_buffer> pixfmt_gray16;
+    typedef pixfmt_alpha_blend_gray<blender_gray32, rendering_buffer> pixfmt_gray32;
+
+    typedef pixfmt_alpha_blend_gray<blender_gray8_pre, rendering_buffer> pixfmt_gray8_pre;
+    typedef pixfmt_alpha_blend_gray<blender_sgray8_pre, rendering_buffer> pixfmt_sgray8_pre;
+    typedef pixfmt_alpha_blend_gray<blender_gray16_pre, rendering_buffer> pixfmt_gray16_pre;
+    typedef pixfmt_alpha_blend_gray<blender_gray32_pre, rendering_buffer> pixfmt_gray32_pre;
+}
+
+#endif
+

deps_src/agg/agg_pixfmt_rgb.h

@@ -0,0 +1,995 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Adaptation for high precision colors has been sponsored by 
+// Liberty Technology Systems, Inc., visit http://lib-sys.com
+//
+// Liberty Technology Systems, Inc. is the provider of
+// PostScript and PDF technology for software developers.
+// 
+//----------------------------------------------------------------------------
+
+#ifndef AGG_PIXFMT_RGB_INCLUDED
+#define AGG_PIXFMT_RGB_INCLUDED
+
+#include <string.h>
+#include "agg_pixfmt_base.h"
+#include "agg_rendering_buffer.h"
+
+namespace agg
+{
+
+    //=====================================================apply_gamma_dir_rgb
+    template<class ColorT, class Order, class GammaLut> class apply_gamma_dir_rgb
+    {
+    public:
+        typedef typename ColorT::value_type value_type;
+
+        apply_gamma_dir_rgb(const GammaLut& gamma) : m_gamma(gamma) {}
+
+        AGG_INLINE void operator () (value_type* p)
+        {
+            p[Order::R] = m_gamma.dir(p[Order::R]);
+            p[Order::G] = m_gamma.dir(p[Order::G]);
+            p[Order::B] = m_gamma.dir(p[Order::B]);
+        }
+
+    private:
+        const GammaLut& m_gamma;
+    };
+
+
+
+    //=====================================================apply_gamma_inv_rgb
+    template<class ColorT, class Order, class GammaLut> class apply_gamma_inv_rgb
+    {
+    public:
+        typedef typename ColorT::value_type value_type;
+
+        apply_gamma_inv_rgb(const GammaLut& gamma) : m_gamma(gamma) {}
+
+        AGG_INLINE void operator () (value_type* p)
+        {
+            p[Order::R] = m_gamma.inv(p[Order::R]);
+            p[Order::G] = m_gamma.inv(p[Order::G]);
+            p[Order::B] = m_gamma.inv(p[Order::B]);
+        }
+
+    private:
+        const GammaLut& m_gamma;
+    };
+
+
+    //=========================================================blender_rgb
+    template<class ColorT, class Order> 
+    struct blender_rgb
+    {
+        typedef ColorT color_type;
+        typedef Order order_type;
+        typedef typename color_type::value_type value_type;
+        typedef typename color_type::calc_type calc_type;
+        typedef typename color_type::long_type long_type;
+
+        // Blend pixels using the non-premultiplied form of Alvy-Ray Smith's
+        // compositing function. Since the render buffer is opaque we skip the
+        // initial premultiply and final demultiply.
+
+        //--------------------------------------------------------------------
+        static AGG_INLINE void blend_pix(value_type* p, 
+            value_type cr, value_type cg, value_type cb, value_type alpha, cover_type cover)
+        {
+            blend_pix(p, cr, cg, cb, color_type::mult_cover(alpha, cover));
+        }
+        
+        //--------------------------------------------------------------------
+        static AGG_INLINE void blend_pix(value_type* p, 
+            value_type cr, value_type cg, value_type cb, value_type alpha)
+        {
+            p[Order::R] = color_type::lerp(p[Order::R], cr, alpha);
+            p[Order::G] = color_type::lerp(p[Order::G], cg, alpha);
+            p[Order::B] = color_type::lerp(p[Order::B], cb, alpha);
+        }
+    };
+
+    //======================================================blender_rgb_pre
+    template<class ColorT, class Order> 
+    struct blender_rgb_pre
+    {
+        typedef ColorT color_type;
+        typedef Order order_type;
+        typedef typename color_type::value_type value_type;
+        typedef typename color_type::calc_type calc_type;
+        typedef typename color_type::long_type long_type;
+
+        // Blend pixels using the premultiplied form of Alvy-Ray Smith's
+        // compositing function. 
+
+        //--------------------------------------------------------------------
+        static AGG_INLINE void blend_pix(value_type* p, 
+            value_type cr, value_type cg, value_type cb, value_type alpha, cover_type cover)
+        {
+            blend_pix(p, 
+                color_type::mult_cover(cr, cover), 
+                color_type::mult_cover(cg, cover), 
+                color_type::mult_cover(cb, cover), 
+                color_type::mult_cover(alpha, cover));
+        }
+
+        //--------------------------------------------------------------------
+        static AGG_INLINE void blend_pix(value_type* p, 
+            value_type cr, value_type cg, value_type cb, value_type alpha)
+        {
+            p[Order::R] = color_type::prelerp(p[Order::R], cr, alpha);
+            p[Order::G] = color_type::prelerp(p[Order::G], cg, alpha);
+            p[Order::B] = color_type::prelerp(p[Order::B], cb, alpha);
+        }
+    };
+
+    //===================================================blender_rgb_gamma
+    template<class ColorT, class Order, class Gamma> 
+    class blender_rgb_gamma : public blender_base<ColorT, Order>
+    {
+    public:
+        typedef ColorT color_type;
+        typedef Order order_type;
+        typedef Gamma gamma_type;
+        typedef typename color_type::value_type value_type;
+        typedef typename color_type::calc_type calc_type;
+        typedef typename color_type::long_type long_type;
+
+        //--------------------------------------------------------------------
+        blender_rgb_gamma() : m_gamma(0) {}
+        void gamma(const gamma_type& g) { m_gamma = &g; }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pix(value_type* p, 
+            value_type cr, value_type cg, value_type cb, value_type alpha, cover_type cover)
+        {
+            blend_pix(p, cr, cg, cb, color_type::mult_cover(alpha, cover));
+        }
+        
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pix(value_type* p, 
+            value_type cr, value_type cg, value_type cb, value_type alpha)
+        {
+            calc_type r = m_gamma->dir(p[Order::R]);
+            calc_type g = m_gamma->dir(p[Order::G]);
+            calc_type b = m_gamma->dir(p[Order::B]);
+            p[Order::R] = m_gamma->inv(color_type::downscale((m_gamma->dir(cr) - r) * alpha) + r);
+            p[Order::G] = m_gamma->inv(color_type::downscale((m_gamma->dir(cg) - g) * alpha) + g);
+            p[Order::B] = m_gamma->inv(color_type::downscale((m_gamma->dir(cb) - b) * alpha) + b);
+        }
+        
+    private:
+        const gamma_type* m_gamma;
+    };
+
+
+    //==================================================pixfmt_alpha_blend_rgb
+    template<class Blender, class RenBuf, unsigned Step, unsigned Offset = 0> 
+    class pixfmt_alpha_blend_rgb
+    {
+    public:
+        typedef pixfmt_rgb_tag pixfmt_category;
+        typedef RenBuf   rbuf_type;
+        typedef Blender  blender_type;
+        typedef typename rbuf_type::row_data row_data;
+        typedef typename blender_type::color_type color_type;
+        typedef typename blender_type::order_type order_type;
+        typedef typename color_type::value_type value_type;
+        typedef typename color_type::calc_type calc_type;
+        enum 
+        {
+            num_components = 3,
+            pix_step = Step,
+            pix_offset = Offset,
+            pix_width = sizeof(value_type) * pix_step
+        };
+        struct pixel_type
+        {
+            value_type c[num_components];
+
+            void set(value_type r, value_type g, value_type b)
+            {
+                c[order_type::R] = r;
+                c[order_type::G] = g;
+                c[order_type::B] = b;
+            }
+
+            void set(const color_type& color)
+            {
+                set(color.r, color.g, color.b);
+            }
+
+            void get(value_type& r, value_type& g, value_type& b) const
+            {
+                r = c[order_type::R];
+                g = c[order_type::G];
+                b = c[order_type::B];
+            }
+
+            color_type get() const
+            {
+                return color_type(
+                    c[order_type::R], 
+                    c[order_type::G], 
+                    c[order_type::B]);
+            }
+
+            pixel_type* next()
+            {
+                return (pixel_type*)(c + pix_step);
+            }
+
+            const pixel_type* next() const
+            {
+                return (const pixel_type*)(c + pix_step);
+            }
+
+            pixel_type* advance(int n)
+            {
+                return (pixel_type*)(c + n * pix_step);
+            }
+
+            const pixel_type* advance(int n) const
+            {
+                return (const pixel_type*)(c + n * pix_step);
+            }
+        };
+
+    private:
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pix(pixel_type* p, 
+            value_type r, value_type g, value_type b, value_type a, 
+            unsigned cover)
+        {
+            m_blender.blend_pix(p->c, r, g, b, a, cover);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pix(pixel_type* p, 
+            value_type r, value_type g, value_type b, value_type a)
+        {
+            m_blender.blend_pix(p->c, r, g, b, a);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pix(pixel_type* p, const color_type& c, unsigned cover)
+        {
+            m_blender.blend_pix(p->c, c.r, c.g, c.b, c.a, cover);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pix(pixel_type* p, const color_type& c)
+        {
+            m_blender.blend_pix(p->c, c.r, c.g, c.b, c.a);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void copy_or_blend_pix(pixel_type* p, const color_type& c, unsigned cover)
+        {
+            if (!c.is_transparent())
+            {
+                if (c.is_opaque() && cover == cover_mask)
+                {
+                    p->set(c);
+                }
+                else
+                {
+                    blend_pix(p, c, cover);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void copy_or_blend_pix(pixel_type* p, const color_type& c)
+        {
+            if (!c.is_transparent())
+            {
+                if (c.is_opaque())
+                {
+                    p->set(c);
+                }
+                else
+                {
+                    blend_pix(p, c);
+                }
+            }
+        }
+
+    public:
+        //--------------------------------------------------------------------
+        explicit pixfmt_alpha_blend_rgb(rbuf_type& rb) :
+            m_rbuf(&rb)
+        {}
+        void attach(rbuf_type& rb) { m_rbuf = &rb; }
+
+        //--------------------------------------------------------------------
+        template<class PixFmt>
+        bool attach(PixFmt& pixf, int x1, int y1, int x2, int y2)
+        {
+            rect_i r(x1, y1, x2, y2);
+            if (r.clip(rect_i(0, 0, pixf.width()-1, pixf.height()-1)))
+            {
+                int stride = pixf.stride();
+                m_rbuf->attach(pixf.pix_ptr(r.x1, stride < 0 ? r.y2 : r.y1), 
+                               (r.x2 - r.x1) + 1,
+                               (r.y2 - r.y1) + 1,
+                               stride);
+                return true;
+            }
+            return false;
+        }
+
+        //--------------------------------------------------------------------
+        Blender& blender() { return m_blender; }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE unsigned width()  const { return m_rbuf->width();  }
+        AGG_INLINE unsigned height() const { return m_rbuf->height(); }
+        AGG_INLINE int      stride() const { return m_rbuf->stride(); }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE       int8u* row_ptr(int y)       { return m_rbuf->row_ptr(y); }
+        AGG_INLINE const int8u* row_ptr(int y) const { return m_rbuf->row_ptr(y); }
+        AGG_INLINE row_data     row(int y)     const { return m_rbuf->row(y); }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE int8u* pix_ptr(int x, int y) 
+        { 
+            return m_rbuf->row_ptr(y) + sizeof(value_type) * (x * pix_step + pix_offset);
+        }
+
+        AGG_INLINE const int8u* pix_ptr(int x, int y) const 
+        { 
+            return m_rbuf->row_ptr(y) + sizeof(value_type) * (x * pix_step + pix_offset);
+        }
+
+        // Return pointer to pixel value, forcing row to be allocated.
+        AGG_INLINE pixel_type* pix_value_ptr(int x, int y, unsigned len) 
+        {
+            return (pixel_type*)(m_rbuf->row_ptr(x, y, len) + sizeof(value_type) * (x * pix_step + pix_offset));
+        }
+
+        // Return pointer to pixel value, or null if row not allocated.
+        AGG_INLINE const pixel_type* pix_value_ptr(int x, int y) const 
+        {
+            int8u* p = m_rbuf->row_ptr(y);
+            return p ? (pixel_type*)(p + sizeof(value_type) * (x * pix_step + pix_offset)) : 0;
+        }
+
+        // Get pixel pointer from raw buffer pointer.
+        AGG_INLINE static pixel_type* pix_value_ptr(void* p) 
+        {
+            return (pixel_type*)((value_type*)p + pix_offset);
+        }
+
+        // Get pixel pointer from raw buffer pointer.
+        AGG_INLINE static const pixel_type* pix_value_ptr(const void* p) 
+        {
+            return (const pixel_type*)((const value_type*)p + pix_offset);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE static void write_plain_color(void* p, color_type c)
+        {
+            // RGB formats are implicitly premultiplied.
+            c.premultiply();
+            pix_value_ptr(p)->set(c);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE static color_type read_plain_color(const void* p)
+        {
+            return pix_value_ptr(p)->get();
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE static void make_pix(int8u* p, const color_type& c)
+        {
+            ((pixel_type*)p)->set(c);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE color_type pixel(int x, int y) const
+        {
+            if (const pixel_type* p = pix_value_ptr(x, y))
+            {
+                return p->get();
+            }
+            return color_type::no_color();
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void copy_pixel(int x, int y, const color_type& c)
+        {
+            pix_value_ptr(x, y, 1)->set(c);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void blend_pixel(int x, int y, const color_type& c, int8u cover)
+        {
+            copy_or_blend_pix(pix_value_ptr(x, y, 1), c, cover);
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void copy_hline(int x, int y, 
+                                   unsigned len, 
+                                   const color_type& c)
+        {
+            pixel_type* p = pix_value_ptr(x, y, len);
+            do
+            {
+                p->set(c);
+                p = p->next();
+            }
+            while(--len);
+        }
+
+
+        //--------------------------------------------------------------------
+        AGG_INLINE void copy_vline(int x, int y,
+                                   unsigned len, 
+                                   const color_type& c)
+        {
+            do
+            {
+                pix_value_ptr(x, y++, 1)->set(c);
+            }
+            while (--len);
+        }
+
+        //--------------------------------------------------------------------
+        void blend_hline(int x, int y,
+                         unsigned len, 
+                         const color_type& c,
+                         int8u cover)
+        {
+            if (!c.is_transparent())
+            {
+                pixel_type* p = pix_value_ptr(x, y, len);
+
+                if (c.is_opaque() && cover == cover_mask)
+                {
+                    do
+                    {
+                        p->set(c);
+                        p = p->next();
+                    }
+                    while (--len);
+                }
+                else
+                {
+                    do
+                    {
+                        blend_pix(p, c, cover);
+                        p = p->next();
+                    }
+                    while (--len);
+                }
+            }
+        }
+
+
+        //--------------------------------------------------------------------
+        void blend_vline(int x, int y,
+                         unsigned len, 
+                         const color_type& c,
+                         int8u cover)
+        {
+            if (!c.is_transparent())
+            {
+                if (c.is_opaque() && cover == cover_mask)
+                {
+                    do
+                    {
+                        pix_value_ptr(x, y++, 1)->set(c);
+                    }
+                    while (--len);
+                }
+                else
+                {
+                    do
+                    {
+                        blend_pix(pix_value_ptr(x, y++, 1), c, cover);
+                    }
+                    while (--len);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        void blend_solid_hspan(int x, int y,
+                               unsigned len, 
+                               const color_type& c,
+                               const int8u* covers)
+        {
+            if (!c.is_transparent())
+            {
+                pixel_type* p = pix_value_ptr(x, y, len);
+
+                do 
+                {
+                    if (c.is_opaque() && *covers == cover_mask)
+                    {
+                        p->set(c);
+                    }
+                    else
+                    {
+                        blend_pix(p, c, *covers);
+                    }
+                    p = p->next();
+                    ++covers;
+                }
+                while (--len);
+            }
+        }
+
+
+        //--------------------------------------------------------------------
+        void blend_solid_vspan(int x, int y,
+                               unsigned len, 
+                               const color_type& c,
+                               const int8u* covers)
+        {
+            if (!c.is_transparent())
+            {
+                do 
+                {
+                    pixel_type* p = pix_value_ptr(x, y++, 1);
+
+                    if (c.is_opaque() && *covers == cover_mask)
+                    {
+                        p->set(c);
+                    }
+                    else
+                    {
+                        blend_pix(p, c, *covers);
+                    }
+                    ++covers;
+                }
+                while (--len);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        void copy_color_hspan(int x, int y,
+                              unsigned len, 
+                              const color_type* colors)
+        {
+            pixel_type* p = pix_value_ptr(x, y, len);
+
+            do 
+            {
+                p->set(*colors++);
+                p = p->next();
+            }
+            while (--len);
+        }
+
+
+        //--------------------------------------------------------------------
+        void copy_color_vspan(int x, int y,
+                              unsigned len, 
+                              const color_type* colors)
+        {
+            do 
+            {
+                pix_value_ptr(x, y++, 1)->set(*colors++);
+            }
+            while (--len);
+        }
+
+        //--------------------------------------------------------------------
+        void blend_color_hspan(int x, int y,
+                               unsigned len, 
+                               const color_type* colors,
+                               const int8u* covers,
+                               int8u cover)
+        {
+            pixel_type* p = pix_value_ptr(x, y, len);
+
+            if (covers)
+            {
+                do 
+                {
+                    copy_or_blend_pix(p, *colors++, *covers++);
+                    p = p->next();
+                }
+                while (--len);
+            }
+            else
+            {
+                if (cover == cover_mask)
+                {
+                    do 
+                    {
+                        copy_or_blend_pix(p, *colors++);
+                        p = p->next();
+                    }
+                    while (--len);
+                }
+                else
+                {
+                    do 
+                    {
+                        copy_or_blend_pix(p, *colors++, cover);
+                        p = p->next();
+                    }
+                    while (--len);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        void blend_color_vspan(int x, int y,
+                               unsigned len, 
+                               const color_type* colors,
+                               const int8u* covers,
+                               int8u cover)
+        {
+            if (covers)
+            {
+                do 
+                {
+                    copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++, *covers++);
+                }
+                while (--len);
+            }
+            else
+            {
+                if (cover == cover_mask)
+                {
+                    do 
+                    {
+                        copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++);
+                    }
+                    while (--len);
+                }
+                else
+                {
+                    do 
+                    {
+                        copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++, cover);
+                    }
+                    while (--len);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        template<class Function> void for_each_pixel(Function f)
+        {
+            for (unsigned y = 0; y < height(); ++y)
+            {
+                row_data r = m_rbuf->row(y);
+                if (r.ptr)
+                {
+                    unsigned len = r.x2 - r.x1 + 1;
+                    pixel_type* p = pix_value_ptr(r.x1, y, len);
+                    do
+                    {
+                        f(p->c);
+                        p = p->next();
+                    }
+                    while (--len);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        template<class GammaLut> void apply_gamma_dir(const GammaLut& g)
+        {
+            for_each_pixel(apply_gamma_dir_rgb<color_type, order_type, GammaLut>(g));
+        }
+
+        //--------------------------------------------------------------------
+        template<class GammaLut> void apply_gamma_inv(const GammaLut& g)
+        {
+            for_each_pixel(apply_gamma_inv_rgb<color_type, order_type, GammaLut>(g));
+        }
+
+        //--------------------------------------------------------------------
+        template<class RenBuf2>
+        void copy_from(const RenBuf2& from, 
+                       int xdst, int ydst,
+                       int xsrc, int ysrc,
+                       unsigned len)
+        {
+            if (const int8u* p = from.row_ptr(ysrc))
+            {
+                memmove(m_rbuf->row_ptr(xdst, ydst, len) + xdst * pix_width, 
+                        p + xsrc * pix_width, 
+                        len * pix_width);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        // Blend from an RGBA surface.
+        template<class SrcPixelFormatRenderer>
+        void blend_from(const SrcPixelFormatRenderer& from, 
+                        int xdst, int ydst,
+                        int xsrc, int ysrc,
+                        unsigned len,
+                        int8u cover)
+        {
+            typedef typename SrcPixelFormatRenderer::pixel_type src_pixel_type;
+            typedef typename SrcPixelFormatRenderer::order_type src_order;
+
+            if (const src_pixel_type* psrc = from.pix_value_ptr(xsrc, ysrc))
+            {
+                pixel_type* pdst = pix_value_ptr(xdst, ydst, len);
+
+                if (cover == cover_mask)
+                {
+                    do 
+                    {
+                        value_type alpha = psrc->c[src_order::A];
+                        if (alpha <= color_type::empty_value())
+                        {
+                            if (alpha >= color_type::full_value())
+                            {
+                                pdst->c[order_type::R] = psrc->c[src_order::R];
+                                pdst->c[order_type::G] = psrc->c[src_order::G];
+                                pdst->c[order_type::B] = psrc->c[src_order::B];
+                            }
+                            else
+                            {
+                                blend_pix(pdst, 
+                                    psrc->c[src_order::R],
+                                    psrc->c[src_order::G],
+                                    psrc->c[src_order::B],
+                                    alpha);
+                            }
+                        }
+                        psrc = psrc->next();
+                        pdst = pdst->next();
+                    }
+                    while(--len);
+                }
+                else
+                {
+                    do 
+                    {
+                        copy_or_blend_pix(pdst, psrc->get(), cover);
+                        psrc = psrc->next();
+                        pdst = pdst->next();
+                    }
+                    while (--len);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        // Blend from single color, using grayscale surface as alpha channel.
+        template<class SrcPixelFormatRenderer>
+        void blend_from_color(const SrcPixelFormatRenderer& from, 
+                              const color_type& color,
+                              int xdst, int ydst,
+                              int xsrc, int ysrc,
+                              unsigned len,
+                              int8u cover)
+        {
+            typedef typename SrcPixelFormatRenderer::pixel_type src_pixel_type;
+            typedef typename SrcPixelFormatRenderer::color_type src_color_type;
+
+            if (const src_pixel_type* psrc = from.pix_value_ptr(xsrc, ysrc))
+            {
+                pixel_type* pdst = pix_value_ptr(xdst, ydst, len);
+
+                do 
+                {
+                    copy_or_blend_pix(pdst, color, src_color_type::scale_cover(cover, psrc->c[0]));
+                    psrc = psrc->next();
+                    pdst = pdst->next();
+                }
+                while (--len);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        // Blend from color table, using grayscale surface as indexes into table. 
+        // Obviously, this only works for integer value types.
+        template<class SrcPixelFormatRenderer>
+        void blend_from_lut(const SrcPixelFormatRenderer& from, 
+                            const color_type* color_lut,
+                            int xdst, int ydst,
+                            int xsrc, int ysrc,
+                            unsigned len,
+                            int8u cover)
+        {
+            typedef typename SrcPixelFormatRenderer::pixel_type src_pixel_type;
+
+            if (const src_pixel_type* psrc = from.pix_value_ptr(xsrc, ysrc))
+            {
+                pixel_type* pdst = pix_value_ptr(xdst, ydst, len);
+
+                if (cover == cover_mask)
+                {
+                    do 
+                    {
+                        const color_type& color = color_lut[psrc->c[0]];
+                        blend_pix(pdst, color);
+                        psrc = psrc->next();
+                        pdst = pdst->next();
+                    }
+                    while(--len);
+                }
+                else
+                {
+                    do 
+                    {
+                        copy_or_blend_pix(pdst, color_lut[psrc->c[0]], cover);
+                        psrc = psrc->next();
+                        pdst = pdst->next();
+                    }
+                    while(--len);
+                }
+            }
+        }
+
+    private:
+        rbuf_type* m_rbuf;
+        Blender    m_blender;
+    };
+    
+    //-----------------------------------------------------------------------
+    typedef blender_rgb<rgba8, order_rgb> blender_rgb24;
+    typedef blender_rgb<rgba8, order_bgr> blender_bgr24;
+    typedef blender_rgb<srgba8, order_rgb> blender_srgb24;
+    typedef blender_rgb<srgba8, order_bgr> blender_sbgr24;
+    typedef blender_rgb<rgba16, order_rgb> blender_rgb48;
+    typedef blender_rgb<rgba16, order_bgr> blender_bgr48;
+    typedef blender_rgb<rgba32, order_rgb> blender_rgb96;
+    typedef blender_rgb<rgba32, order_bgr> blender_bgr96;
+
+    typedef blender_rgb_pre<rgba8, order_rgb> blender_rgb24_pre;
+    typedef blender_rgb_pre<rgba8, order_bgr> blender_bgr24_pre;
+    typedef blender_rgb_pre<srgba8, order_rgb> blender_srgb24_pre;
+    typedef blender_rgb_pre<srgba8, order_bgr> blender_sbgr24_pre;
+    typedef blender_rgb_pre<rgba16, order_rgb> blender_rgb48_pre;
+    typedef blender_rgb_pre<rgba16, order_bgr> blender_bgr48_pre;
+    typedef blender_rgb_pre<rgba32, order_rgb> blender_rgb96_pre;
+    typedef blender_rgb_pre<rgba32, order_bgr> blender_bgr96_pre;
+
+    typedef pixfmt_alpha_blend_rgb<blender_rgb24, rendering_buffer, 3> pixfmt_rgb24;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr24, rendering_buffer, 3> pixfmt_bgr24;
+    typedef pixfmt_alpha_blend_rgb<blender_srgb24, rendering_buffer, 3> pixfmt_srgb24;
+    typedef pixfmt_alpha_blend_rgb<blender_sbgr24, rendering_buffer, 3> pixfmt_sbgr24;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb48, rendering_buffer, 3> pixfmt_rgb48;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr48, rendering_buffer, 3> pixfmt_bgr48;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb96, rendering_buffer, 3> pixfmt_rgb96;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr96, rendering_buffer, 3> pixfmt_bgr96;
+
+    typedef pixfmt_alpha_blend_rgb<blender_rgb24_pre, rendering_buffer, 3> pixfmt_rgb24_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr24_pre, rendering_buffer, 3> pixfmt_bgr24_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_srgb24_pre, rendering_buffer, 3> pixfmt_srgb24_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_sbgr24_pre, rendering_buffer, 3> pixfmt_sbgr24_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb48_pre, rendering_buffer, 3> pixfmt_rgb48_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr48_pre, rendering_buffer, 3> pixfmt_bgr48_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb96_pre, rendering_buffer, 3> pixfmt_rgb96_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr96_pre, rendering_buffer, 3> pixfmt_bgr96_pre;
+
+    typedef pixfmt_alpha_blend_rgb<blender_rgb24, rendering_buffer, 4, 0> pixfmt_rgbx32;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb24, rendering_buffer, 4, 1> pixfmt_xrgb32;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr24, rendering_buffer, 4, 1> pixfmt_xbgr32;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr24, rendering_buffer, 4, 0> pixfmt_bgrx32;
+    typedef pixfmt_alpha_blend_rgb<blender_srgb24, rendering_buffer, 4, 0> pixfmt_srgbx32;
+    typedef pixfmt_alpha_blend_rgb<blender_srgb24, rendering_buffer, 4, 1> pixfmt_sxrgb32;
+    typedef pixfmt_alpha_blend_rgb<blender_sbgr24, rendering_buffer, 4, 1> pixfmt_sxbgr32;
+    typedef pixfmt_alpha_blend_rgb<blender_sbgr24, rendering_buffer, 4, 0> pixfmt_sbgrx32;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb48, rendering_buffer, 4, 0> pixfmt_rgbx64;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb48, rendering_buffer, 4, 1> pixfmt_xrgb64;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr48, rendering_buffer, 4, 1> pixfmt_xbgr64;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr48, rendering_buffer, 4, 0> pixfmt_bgrx64;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb96, rendering_buffer, 4, 0> pixfmt_rgbx128;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb96, rendering_buffer, 4, 1> pixfmt_xrgb128;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr96, rendering_buffer, 4, 1> pixfmt_xbgr128;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr96, rendering_buffer, 4, 0> pixfmt_bgrx128;
+
+    typedef pixfmt_alpha_blend_rgb<blender_rgb24_pre, rendering_buffer, 4, 0> pixfmt_rgbx32_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb24_pre, rendering_buffer, 4, 1> pixfmt_xrgb32_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr24_pre, rendering_buffer, 4, 1> pixfmt_xbgr32_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr24_pre, rendering_buffer, 4, 0> pixfmt_bgrx32_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_srgb24_pre, rendering_buffer, 4, 0> pixfmt_srgbx32_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_srgb24_pre, rendering_buffer, 4, 1> pixfmt_sxrgb32_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_sbgr24_pre, rendering_buffer, 4, 1> pixfmt_sxbgr32_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_sbgr24_pre, rendering_buffer, 4, 0> pixfmt_sbgrx32_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb48_pre, rendering_buffer, 4, 0> pixfmt_rgbx64_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb48_pre, rendering_buffer, 4, 1> pixfmt_xrgb64_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr48_pre, rendering_buffer, 4, 1> pixfmt_xbgr64_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr48_pre, rendering_buffer, 4, 0> pixfmt_bgrx64_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb96_pre, rendering_buffer, 4, 0> pixfmt_rgbx128_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_rgb96_pre, rendering_buffer, 4, 1> pixfmt_xrgb128_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr96_pre, rendering_buffer, 4, 1> pixfmt_xbgr128_pre;
+    typedef pixfmt_alpha_blend_rgb<blender_bgr96_pre, rendering_buffer, 4, 0> pixfmt_bgrx128_pre;
+    
+
+    //-----------------------------------------------------pixfmt_rgb24_gamma
+    template<class Gamma> class pixfmt_rgb24_gamma : 
+    public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_rgb, Gamma>, rendering_buffer, 3>
+    {
+    public:
+        pixfmt_rgb24_gamma(rendering_buffer& rb, const Gamma& g) :
+            pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_rgb, Gamma>, rendering_buffer, 3>(rb) 
+        {
+            this->blender().gamma(g);
+        }
+    };
+        
+    //-----------------------------------------------------pixfmt_srgb24_gamma
+    template<class Gamma> class pixfmt_srgb24_gamma : 
+    public pixfmt_alpha_blend_rgb<blender_rgb_gamma<srgba8, order_rgb, Gamma>, rendering_buffer, 3>
+    {
+    public:
+        pixfmt_srgb24_gamma(rendering_buffer& rb, const Gamma& g) :
+            pixfmt_alpha_blend_rgb<blender_rgb_gamma<srgba8, order_rgb, Gamma>, rendering_buffer, 3>(rb) 
+        {
+            this->blender().gamma(g);
+        }
+    };
+        
+    //-----------------------------------------------------pixfmt_bgr24_gamma
+    template<class Gamma> class pixfmt_bgr24_gamma : 
+    public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_bgr, Gamma>, rendering_buffer, 3>
+    {
+    public:
+        pixfmt_bgr24_gamma(rendering_buffer& rb, const Gamma& g) :
+            pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_bgr, Gamma>, rendering_buffer, 3>(rb) 
+        {
+            this->blender().gamma(g);
+        }
+    };
+
+    //-----------------------------------------------------pixfmt_sbgr24_gamma
+    template<class Gamma> class pixfmt_sbgr24_gamma : 
+    public pixfmt_alpha_blend_rgb<blender_rgb_gamma<srgba8, order_bgr, Gamma>, rendering_buffer, 3>
+    {
+    public:
+        pixfmt_sbgr24_gamma(rendering_buffer& rb, const Gamma& g) :
+            pixfmt_alpha_blend_rgb<blender_rgb_gamma<srgba8, order_bgr, Gamma>, rendering_buffer, 3>(rb) 
+        {
+            this->blender().gamma(g);
+        }
+    };
+
+    //-----------------------------------------------------pixfmt_rgb48_gamma
+    template<class Gamma> class pixfmt_rgb48_gamma : 
+    public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_rgb, Gamma>, rendering_buffer, 3>
+    {
+    public:
+        pixfmt_rgb48_gamma(rendering_buffer& rb, const Gamma& g) :
+            pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_rgb, Gamma>, rendering_buffer, 3>(rb) 
+        {
+            this->blender().gamma(g);
+        }
+    };
+        
+    //-----------------------------------------------------pixfmt_bgr48_gamma
+    template<class Gamma> class pixfmt_bgr48_gamma : 
+    public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_bgr, Gamma>, rendering_buffer, 3>
+    {
+    public:
+        pixfmt_bgr48_gamma(rendering_buffer& rb, const Gamma& g) :
+            pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_bgr, Gamma>, rendering_buffer, 3>(rb) 
+        {
+            this->blender().gamma(g);
+        }
+    };
+    
+}
+
+#endif
+

deps_src/agg/agg_rasterizer_cells_aa.h

@@ -0,0 +1,741 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+//
+// The author gratefully acknowleges the support of David Turner, 
+// Robert Wilhelm, and Werner Lemberg - the authors of the FreeType 
+// libray - in producing this work. See http://www.freetype.org for details.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Adaptation for 32-bit screen coordinates has been sponsored by 
+// Liberty Technology Systems, Inc., visit http://lib-sys.com
+//
+// Liberty Technology Systems, Inc. is the provider of
+// PostScript and PDF technology for software developers.
+// 
+//----------------------------------------------------------------------------
+#ifndef AGG_RASTERIZER_CELLS_AA_INCLUDED
+#define AGG_RASTERIZER_CELLS_AA_INCLUDED
+
+#include <string.h>
+#include <cstdlib>
+#include <limits>
+#include "agg_math.h"
+#include "agg_array.h"
+
+
+namespace agg
+{
+
+    //-----------------------------------------------------rasterizer_cells_aa
+    // An internal class that implements the main rasterization algorithm.
+    // Used in the rasterizer. Should not be used direcly.
+    template<class Cell> class rasterizer_cells_aa
+    {
+        enum cell_block_scale_e
+        {
+            cell_block_shift = 12,
+            cell_block_size  = 1 << cell_block_shift,
+            cell_block_mask  = cell_block_size - 1,
+            cell_block_pool  = 256,
+            cell_block_limit = 1024
+        };
+
+        struct sorted_y
+        {
+            unsigned start;
+            unsigned num;
+        };
+
+    public:
+        typedef Cell cell_type;
+        typedef rasterizer_cells_aa<Cell> self_type;
+
+        ~rasterizer_cells_aa();
+        rasterizer_cells_aa();
+
+        void reset();
+        void style(const cell_type& style_cell);
+        void line(int x1, int y1, int x2, int y2);
+
+        int min_x() const { return m_min_x; }
+        int min_y() const { return m_min_y; }
+        int max_x() const { return m_max_x; }
+        int max_y() const { return m_max_y; }
+
+        void sort_cells();
+
+        unsigned total_cells() const 
+        {
+            return m_num_cells;
+        }
+
+        unsigned scanline_num_cells(unsigned y) const 
+        { 
+            return m_sorted_y[y - m_min_y].num; 
+        }
+
+        const cell_type* const* scanline_cells(unsigned y) const
+        { 
+            return m_sorted_cells.data() + m_sorted_y[y - m_min_y].start; 
+        }
+
+        bool sorted() const { return m_sorted; }
+
+    private:
+        rasterizer_cells_aa(const self_type&);
+        const self_type& operator = (const self_type&);
+
+        void set_curr_cell(int x, int y);
+        void add_curr_cell();
+        void render_hline(int ey, int x1, int y1, int x2, int y2);
+        void allocate_block();
+        
+    private:
+        unsigned                m_num_blocks;
+        unsigned                m_max_blocks;
+        unsigned                m_curr_block;
+        unsigned                m_num_cells;
+        cell_type**             m_cells;
+        cell_type*              m_curr_cell_ptr;
+        pod_vector<cell_type*>  m_sorted_cells;
+        pod_vector<sorted_y>    m_sorted_y;
+        cell_type               m_curr_cell;
+        cell_type               m_style_cell;
+        int                     m_min_x;
+        int                     m_min_y;
+        int                     m_max_x;
+        int                     m_max_y;
+        bool                    m_sorted;
+    };
+
+
+
+
+    //------------------------------------------------------------------------
+    template<class Cell> 
+    rasterizer_cells_aa<Cell>::~rasterizer_cells_aa()
+    {
+        if(m_num_blocks)
+        {
+            cell_type** ptr = m_cells + m_num_blocks - 1;
+            while(m_num_blocks--)
+            {
+                pod_allocator<cell_type>::deallocate(*ptr, cell_block_size);
+                ptr--;
+            }
+            pod_allocator<cell_type*>::deallocate(m_cells, m_max_blocks);
+        }
+    }
+
+    //------------------------------------------------------------------------
+    template<class Cell> 
+    rasterizer_cells_aa<Cell>::rasterizer_cells_aa() :
+        m_num_blocks(0),
+        m_max_blocks(0),
+        m_curr_block(0),
+        m_num_cells(0),
+        m_cells(0),
+        m_curr_cell_ptr(0),
+        m_sorted_cells(),
+        m_sorted_y(),
+        m_min_x(std::numeric_limits<int>::max()),
+        m_min_y(std::numeric_limits<int>::max()),
+        m_max_x(std::numeric_limits<int>::min()),
+        m_max_y(std::numeric_limits<int>::min()),
+        m_sorted(false)
+    {
+        m_style_cell.initial();
+        m_curr_cell.initial();
+    }
+
+    //------------------------------------------------------------------------
+    template<class Cell> 
+    void rasterizer_cells_aa<Cell>::reset()
+    {
+        m_num_cells = 0; 
+        m_curr_block = 0;
+        m_curr_cell.initial();
+        m_style_cell.initial();
+        m_sorted = false;
+        m_min_x = std::numeric_limits<int>::max();
+        m_min_y = std::numeric_limits<int>::max();
+        m_max_x = std::numeric_limits<int>::min();
+        m_max_y = std::numeric_limits<int>::min();
+    }
+
+    //------------------------------------------------------------------------
+    template<class Cell> 
+    AGG_INLINE void rasterizer_cells_aa<Cell>::add_curr_cell()
+    {
+        if(m_curr_cell.area | m_curr_cell.cover)
+        {
+            if((m_num_cells & cell_block_mask) == 0)
+            {
+                if(m_num_blocks >= cell_block_limit) return;
+                allocate_block();
+            }
+            *m_curr_cell_ptr++ = m_curr_cell;
+            ++m_num_cells;
+        }
+    }
+
+    //------------------------------------------------------------------------
+    template<class Cell> 
+    AGG_INLINE void rasterizer_cells_aa<Cell>::set_curr_cell(int x, int y)
+    {
+        if(m_curr_cell.not_equal(x, y, m_style_cell))
+        {
+            add_curr_cell();
+            m_curr_cell.style(m_style_cell);
+            m_curr_cell.x     = x;
+            m_curr_cell.y     = y;
+            m_curr_cell.cover = 0;
+            m_curr_cell.area  = 0;
+        }
+    }
+
+    //------------------------------------------------------------------------
+    template<class Cell> 
+    AGG_INLINE void rasterizer_cells_aa<Cell>::render_hline(int ey, 
+                                                            int x1, int y1, 
+                                                            int x2, int y2)
+    {
+        int ex1 = x1 >> poly_subpixel_shift;
+        int ex2 = x2 >> poly_subpixel_shift;
+        int fx1 = x1 & poly_subpixel_mask;
+        int fx2 = x2 & poly_subpixel_mask;
+
+        int delta, p, first;
+        long long dx;
+        int incr, lift, mod, rem;
+
+        //trivial case. Happens often
+        if(y1 == y2)
+        {
+            set_curr_cell(ex2, ey);
+            return;
+        }
+
+        //everything is located in a single cell.  That is easy!
+        if(ex1 == ex2)
+        {
+            delta = y2 - y1;
+            m_curr_cell.cover += delta;
+            m_curr_cell.area  += (fx1 + fx2) * delta;
+            return;
+        }
+
+        //ok, we'll have to render a run of adjacent cells on the same
+        //hline...
+        p     = (poly_subpixel_scale - fx1) * (y2 - y1);
+        first = poly_subpixel_scale;
+        incr  = 1;
+
+        dx = (long long)x2 - (long long)x1;
+
+        if(dx < 0)
+        {
+            p     = fx1 * (y2 - y1);
+            first = 0;
+            incr  = -1;
+            dx    = -dx;
+        }
+
+        delta = (int)(p / dx);
+        mod   = (int)(p % dx);
+
+        if(mod < 0)
+        {
+            delta--;
+            mod += static_cast<int>(dx);
+        }
+
+        m_curr_cell.cover += delta;
+        m_curr_cell.area  += (fx1 + first) * delta;
+
+        ex1 += incr;
+        set_curr_cell(ex1, ey);
+        y1  += delta;
+
+        if(ex1 != ex2)
+        {
+            p     = poly_subpixel_scale * (y2 - y1 + delta);
+            lift  = (int)(p / dx);
+            rem   = (int)(p % dx);
+
+            if (rem < 0)
+            {
+                lift--;
+                rem += static_cast<int>(dx);
+            }
+
+            mod -= static_cast<int>(dx);
+
+            while (ex1 != ex2)
+            {
+                delta = lift;
+                mod  += rem;
+                if(mod >= 0)
+                {
+                    mod -= static_cast<int>(dx);
+                    delta++;
+                }
+
+                m_curr_cell.cover += delta;
+                m_curr_cell.area  += poly_subpixel_scale * delta;
+                y1  += delta;
+                ex1 += incr;
+                set_curr_cell(ex1, ey);
+            }
+        }
+        delta = y2 - y1;
+        m_curr_cell.cover += delta;
+        m_curr_cell.area  += (fx2 + poly_subpixel_scale - first) * delta;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Cell> 
+    AGG_INLINE void rasterizer_cells_aa<Cell>::style(const cell_type& style_cell)
+    { 
+        m_style_cell.style(style_cell); 
+    }
+
+    //------------------------------------------------------------------------
+    template<class Cell> 
+    void rasterizer_cells_aa<Cell>::line(int x1, int y1, int x2, int y2)
+    {
+        enum dx_limit_e { dx_limit = 16384 << poly_subpixel_shift };
+
+        long long dx = (long long)x2 - (long long)x1;
+
+        if(dx >= dx_limit || dx <= -dx_limit)
+        {
+            int cx = (int)(((long long)x1 + (long long)x2) >> 1);
+            int cy = (int)(((long long)y1 + (long long)y2) >> 1);
+            line(x1, y1, cx, cy);
+            line(cx, cy, x2, y2);
+        }
+
+        long long dy = (long long)y2 - (long long)y1;
+        int ex1 = x1 >> poly_subpixel_shift;
+        int ex2 = x2 >> poly_subpixel_shift;
+        int ey1 = y1 >> poly_subpixel_shift;
+        int ey2 = y2 >> poly_subpixel_shift;
+        int fy1 = y1 & poly_subpixel_mask;
+        int fy2 = y2 & poly_subpixel_mask;
+
+        int x_from, x_to;
+        int rem, mod, lift, delta, first, incr;
+        long long p;
+
+        if(ex1 < m_min_x) m_min_x = ex1;
+        if(ex1 > m_max_x) m_max_x = ex1;
+        if(ey1 < m_min_y) m_min_y = ey1;
+        if(ey1 > m_max_y) m_max_y = ey1;
+        if(ex2 < m_min_x) m_min_x = ex2;
+        if(ex2 > m_max_x) m_max_x = ex2;
+        if(ey2 < m_min_y) m_min_y = ey2;
+        if(ey2 > m_max_y) m_max_y = ey2;
+
+        set_curr_cell(ex1, ey1);
+
+        //everything is on a single hline
+        if(ey1 == ey2)
+        {
+            render_hline(ey1, x1, fy1, x2, fy2);
+            return;
+        }
+
+        //Vertical line - we have to calculate start and end cells,
+        //and then - the common values of the area and coverage for
+        //all cells of the line. We know exactly there's only one 
+        //cell, so, we don't have to call render_hline().
+        incr  = 1;
+        if(dx == 0)
+        {
+            int ex = x1 >> poly_subpixel_shift;
+            int two_fx = (x1 - (ex << poly_subpixel_shift)) << 1;
+            int area;
+
+            first = poly_subpixel_scale;
+            if(dy < 0)
+            {
+                first = 0;
+                incr  = -1;
+            }
+
+            x_from = x1;
+
+            //render_hline(ey1, x_from, fy1, x_from, first);
+            delta = first - fy1;
+            m_curr_cell.cover += delta;
+            m_curr_cell.area  += two_fx * delta;
+
+            ey1 += incr;
+            set_curr_cell(ex, ey1);
+
+            delta = first + first - poly_subpixel_scale;
+            area = two_fx * delta;
+            while(ey1 != ey2)
+            {
+                //render_hline(ey1, x_from, poly_subpixel_scale - first, x_from, first);
+                m_curr_cell.cover = delta;
+                m_curr_cell.area  = area;
+                ey1 += incr;
+                set_curr_cell(ex, ey1);
+            }
+            //render_hline(ey1, x_from, poly_subpixel_scale - first, x_from, fy2);
+            delta = fy2 - poly_subpixel_scale + first;
+            m_curr_cell.cover += delta;
+            m_curr_cell.area  += two_fx * delta;
+            return;
+        }
+
+        //ok, we have to render several hlines
+        p     = (poly_subpixel_scale - fy1) * dx;
+        first = poly_subpixel_scale;
+
+        if(dy < 0)
+        {
+            p     = fy1 * dx;
+            first = 0;
+            incr  = -1;
+            dy    = -dy;
+        }
+
+        delta = (int)(p / dy);
+        mod   = (int)(p % dy);
+
+        if(mod < 0)
+        {
+            delta--;
+            mod += static_cast<int>(dy);
+        }
+
+        x_from = x1 + delta;
+        render_hline(ey1, x1, fy1, x_from, first);
+
+        ey1 += incr;
+        set_curr_cell(x_from >> poly_subpixel_shift, ey1);
+
+        if(ey1 != ey2)
+        {
+            p     = poly_subpixel_scale * dx;
+            lift  = (int)(p / dy);
+            rem   = (int)(p % dy);
+
+            if(rem < 0)
+            {
+                lift--;
+                rem += static_cast<int>(dy);
+            }
+            mod -= static_cast<int>(dy);
+
+            while(ey1 != ey2)
+            {
+                delta = lift;
+                mod  += rem;
+                if (mod >= 0)
+                {
+                    mod -= static_cast<int>(dy);
+                    delta++;
+                }
+
+                x_to = x_from + delta;
+                render_hline(ey1, x_from, poly_subpixel_scale - first, x_to, first);
+                x_from = x_to;
+
+                ey1 += incr;
+                set_curr_cell(x_from >> poly_subpixel_shift, ey1);
+            }
+        }
+        render_hline(ey1, x_from, poly_subpixel_scale - first, x2, fy2);
+    }
+
+    //------------------------------------------------------------------------
+    template<class Cell> 
+    void rasterizer_cells_aa<Cell>::allocate_block()
+    {
+        if(m_curr_block >= m_num_blocks)
+        {
+            if(m_num_blocks >= m_max_blocks)
+            {
+                cell_type** new_cells = 
+                    pod_allocator<cell_type*>::allocate(m_max_blocks + 
+                                                        cell_block_pool);
+
+                if(m_cells)
+                {
+                    memcpy(new_cells, m_cells, m_max_blocks * sizeof(cell_type*));
+                    pod_allocator<cell_type*>::deallocate(m_cells, m_max_blocks);
+                }
+                m_cells = new_cells;
+                m_max_blocks += cell_block_pool;
+            }
+
+            m_cells[m_num_blocks++] = 
+                pod_allocator<cell_type>::allocate(cell_block_size);
+
+        }
+        m_curr_cell_ptr = m_cells[m_curr_block++];
+    }
+
+
+
+    //------------------------------------------------------------------------
+    template <class T> static AGG_INLINE void swap_cells(T* a, T* b)
+    {
+        T temp = *a;
+        *a = *b;
+        *b = temp;
+    }
+
+
+    //------------------------------------------------------------------------
+    enum
+    {
+        qsort_threshold = 9
+    };
+
+
+    //------------------------------------------------------------------------
+    template<class Cell>
+    void qsort_cells(Cell** start, unsigned num)
+    {
+        Cell**  stack[80];
+        Cell*** top; 
+        Cell**  limit;
+        Cell**  base;
+
+        limit = start + num;
+        base  = start;
+        top   = stack;
+
+        for (;;)
+        {
+            int len = int(limit - base);
+
+            Cell** i;
+            Cell** j;
+            Cell** pivot;
+
+            if(len > qsort_threshold)
+            {
+                // we use base + len/2 as the pivot
+                pivot = base + len / 2;
+                swap_cells(base, pivot);
+
+                i = base + 1;
+                j = limit - 1;
+
+                // now ensure that *i <= *base <= *j 
+                if((*j)->x < (*i)->x)
+                {
+                    swap_cells(i, j);
+                }
+
+                if((*base)->x < (*i)->x)
+                {
+                    swap_cells(base, i);
+                }
+
+                if((*j)->x < (*base)->x)
+                {
+                    swap_cells(base, j);
+                }
+
+                for(;;)
+                {
+                    int x = (*base)->x;
+                    do i++; while( (*i)->x < x );
+                    do j--; while( x < (*j)->x );
+
+                    if(i > j)
+                    {
+                        break;
+                    }
+
+                    swap_cells(i, j);
+                }
+
+                swap_cells(base, j);
+
+                // now, push the largest sub-array
+                if(j - base > limit - i)
+                {
+                    top[0] = base;
+                    top[1] = j;
+                    base   = i;
+                }
+                else
+                {
+                    top[0] = i;
+                    top[1] = limit;
+                    limit  = j;
+                }
+                top += 2;
+            }
+            else
+            {
+                // the sub-array is small, perform insertion sort
+                j = base;
+                i = j + 1;
+
+                for(; i < limit; j = i, i++)
+                {
+                    for(; j[1]->x < (*j)->x; j--)
+                    {
+                        swap_cells(j + 1, j);
+                        if (j == base)
+                        {
+                            break;
+                        }
+                    }
+                }
+
+                if(top > stack)
+                {
+                    top  -= 2;
+                    base  = top[0];
+                    limit = top[1];
+                }
+                else
+                {
+                    break;
+                }
+            }
+        }
+    }
+
+
+    //------------------------------------------------------------------------
+    template<class Cell> 
+    void rasterizer_cells_aa<Cell>::sort_cells()
+    {
+        if(m_sorted) return; //Perform sort only the first time.
+
+        add_curr_cell();
+        m_curr_cell.x     = std::numeric_limits<int>::max();
+        m_curr_cell.y     = std::numeric_limits<int>::max();
+        m_curr_cell.cover = 0;
+        m_curr_cell.area  = 0;
+
+        if(m_num_cells == 0) return;
+
+// DBG: Check to see if min/max works well.
+//for(unsigned nc = 0; nc < m_num_cells; nc++)
+//{
+//    cell_type* cell = m_cells[nc >> cell_block_shift] + (nc & cell_block_mask);
+//    if(cell->x < m_min_x || 
+//       cell->y < m_min_y || 
+//       cell->x > m_max_x || 
+//       cell->y > m_max_y)
+//    {
+//        cell = cell; // Breakpoint here
+//    }
+//}
+        // Allocate the array of cell pointers
+        m_sorted_cells.allocate(m_num_cells, 16);
+
+        // Allocate and zero the Y array
+        m_sorted_y.allocate(m_max_y - m_min_y + 1, 16);
+        m_sorted_y.zero();
+
+        // Create the Y-histogram (count the numbers of cells for each Y)
+        cell_type** block_ptr = m_cells;
+        cell_type*  cell_ptr;
+        unsigned nb = m_num_cells;
+        unsigned i;
+        while(nb)
+        {
+            cell_ptr = *block_ptr++;
+            i = (nb > cell_block_size) ? unsigned(cell_block_size) : nb;
+            nb -= i;
+            while(i--) 
+            {
+                m_sorted_y[cell_ptr->y - m_min_y].start++;
+                ++cell_ptr;
+            }
+        }
+
+        // Convert the Y-histogram into the array of starting indexes
+        unsigned start = 0;
+        for(i = 0; i < m_sorted_y.size(); i++)
+        {
+            unsigned v = m_sorted_y[i].start;
+            m_sorted_y[i].start = start;
+            start += v;
+        }
+
+        // Fill the cell pointer array sorted by Y
+        block_ptr = m_cells;
+        nb = m_num_cells;
+        while(nb)
+        {
+            cell_ptr = *block_ptr++;
+            i = (nb > cell_block_size) ? unsigned(cell_block_size) : nb;
+            nb -= i;
+            while(i--)
+            {
+                sorted_y& curr_y = m_sorted_y[cell_ptr->y - m_min_y];
+                m_sorted_cells[curr_y.start + curr_y.num] = cell_ptr;
+                ++curr_y.num;
+                ++cell_ptr;
+            }
+        }
+        
+        // Finally arrange the X-arrays
+        for(i = 0; i < m_sorted_y.size(); i++)
+        {
+            const sorted_y& curr_y = m_sorted_y[i];
+            if(curr_y.num)
+            {
+                qsort_cells(m_sorted_cells.data() + curr_y.start, curr_y.num);
+            }
+        }
+        m_sorted = true;
+    }
+
+
+
+    //------------------------------------------------------scanline_hit_test
+    class scanline_hit_test
+    {
+    public:
+        scanline_hit_test(int x) : m_x(x), m_hit(false) {}
+
+        void reset_spans() {}
+        void finalize(int) {}
+        void add_cell(int x, int)
+        {
+            if(m_x == x) m_hit = true;
+        }
+        void add_span(int x, int len, int)
+        {
+            if(m_x >= x && m_x < x+len) m_hit = true;
+        }
+        unsigned num_spans() const { return 1; }
+        bool hit() const { return m_hit; }
+
+    private:
+        int  m_x;
+        bool m_hit;
+    };
+
+
+}
+
+#endif

deps_src/agg/agg_rasterizer_scanline_aa.h

@@ -0,0 +1,481 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+//
+// The author gratefully acknowleges the support of David Turner, 
+// Robert Wilhelm, and Werner Lemberg - the authors of the FreeType 
+// libray - in producing this work. See http://www.freetype.org for details.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Adaptation for 32-bit screen coordinates has been sponsored by 
+// Liberty Technology Systems, Inc., visit http://lib-sys.com
+//
+// Liberty Technology Systems, Inc. is the provider of
+// PostScript and PDF technology for software developers.
+// 
+//----------------------------------------------------------------------------
+#ifndef AGG_RASTERIZER_SCANLINE_AA_INCLUDED
+#define AGG_RASTERIZER_SCANLINE_AA_INCLUDED
+
+#include "agg_rasterizer_cells_aa.h"
+#include "agg_rasterizer_sl_clip.h"
+#include "agg_rasterizer_scanline_aa_nogamma.h"
+#include "agg_gamma_functions.h"
+
+
+namespace agg
+{
+    //==================================================rasterizer_scanline_aa
+    // Polygon rasterizer that is used to render filled polygons with 
+    // high-quality Anti-Aliasing. Internally, by default, the class uses 
+    // integer coordinates in format 24.8, i.e. 24 bits for integer part 
+    // and 8 bits for fractional - see poly_subpixel_shift. This class can be 
+    // used in the following  way:
+    //
+    // 1. filling_rule(filling_rule_e ft) - optional.
+    //
+    // 2. gamma() - optional.
+    //
+    // 3. reset()
+    //
+    // 4. move_to(x, y) / line_to(x, y) - make the polygon. One can create 
+    //    more than one contour, but each contour must consist of at least 3
+    //    vertices, i.e. move_to(x1, y1); line_to(x2, y2); line_to(x3, y3);
+    //    is the absolute minimum of vertices that define a triangle.
+    //    The algorithm does not check either the number of vertices nor
+    //    coincidence of their coordinates, but in the worst case it just 
+    //    won't draw anything.
+    //    The orger of the vertices (clockwise or counterclockwise) 
+    //    is important when using the non-zero filling rule (fill_non_zero).
+    //    In this case the vertex order of all the contours must be the same
+    //    if you want your intersecting polygons to be without "holes".
+    //    You actually can use different vertices order. If the contours do not 
+    //    intersect each other the order is not important anyway. If they do, 
+    //    contours with the same vertex order will be rendered without "holes" 
+    //    while the intersecting contours with different orders will have "holes".
+    //
+    // filling_rule() and gamma() can be called anytime before "sweeping".
+    //------------------------------------------------------------------------
+    template<class Clip=rasterizer_sl_clip_int> class rasterizer_scanline_aa
+    {
+        enum status
+        {
+            status_initial,
+            status_move_to,
+            status_line_to,
+            status_closed
+        };
+
+    public:
+        typedef Clip                      clip_type;
+        typedef typename Clip::conv_type  conv_type;
+        typedef typename Clip::coord_type coord_type;
+
+        enum aa_scale_e
+        {
+            aa_shift  = 8,
+            aa_scale  = 1 << aa_shift,
+            aa_mask   = aa_scale - 1,
+            aa_scale2 = aa_scale * 2,
+            aa_mask2  = aa_scale2 - 1
+        };
+
+        //--------------------------------------------------------------------
+        rasterizer_scanline_aa() : 
+            m_outline(),
+            m_clipper(),
+            m_filling_rule(fill_non_zero),
+            m_auto_close(true),
+            m_start_x(0),
+            m_start_y(0),
+            m_status(status_initial)
+        {
+            int i;
+            for(i = 0; i < aa_scale; i++) m_gamma[i] = i;
+        }
+
+        //--------------------------------------------------------------------
+        template<class GammaF> 
+        rasterizer_scanline_aa(const GammaF& gamma_function) : 
+            m_outline(),
+            m_clipper(m_outline),
+            m_filling_rule(fill_non_zero),
+            m_auto_close(true),
+            m_start_x(0),
+            m_start_y(0),
+            m_status(status_initial)
+        {
+            gamma(gamma_function);
+        }
+
+        //--------------------------------------------------------------------
+        void reset(); 
+        void reset_clipping();
+        void clip_box(double x1, double y1, double x2, double y2);
+        void filling_rule(filling_rule_e filling_rule);
+        void auto_close(bool flag) { m_auto_close = flag; }
+
+        //--------------------------------------------------------------------
+        template<class GammaF> void gamma(const GammaF& gamma_function)
+        { 
+            int i;
+            for(i = 0; i < aa_scale; i++)
+            {
+                m_gamma[i] = uround(gamma_function(double(i) / aa_mask) * aa_mask);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        unsigned apply_gamma(unsigned cover) const 
+        { 
+            return m_gamma[cover]; 
+        }
+
+        //--------------------------------------------------------------------
+        void move_to(int x, int y);
+        void line_to(int x, int y);
+        void move_to_d(double x, double y);
+        void line_to_d(double x, double y);
+        void close_polygon();
+        void add_vertex(double x, double y, unsigned cmd);
+
+        void edge(int x1, int y1, int x2, int y2);
+        void edge_d(double x1, double y1, double x2, double y2);
+
+        //-------------------------------------------------------------------
+        template<class VertexSource>
+        void add_path(VertexSource &&vs, unsigned path_id=0)
+        {
+            double x;
+            double y;
+
+            unsigned cmd;
+            vs.rewind(path_id);
+            if(m_outline.sorted()) reset();
+            while(!is_stop(cmd = vs.vertex(&x, &y)))
+            {
+                add_vertex(x, y, cmd);
+            }
+        }
+        
+        //--------------------------------------------------------------------
+        int min_x() const { return m_outline.min_x(); }
+        int min_y() const { return m_outline.min_y(); }
+        int max_x() const { return m_outline.max_x(); }
+        int max_y() const { return m_outline.max_y(); }
+
+        //--------------------------------------------------------------------
+        void sort();
+        bool rewind_scanlines();
+        bool navigate_scanline(int y);
+
+        //--------------------------------------------------------------------
+        AGG_INLINE unsigned calculate_alpha(int area) const
+        {
+            int cover = area >> (poly_subpixel_shift*2 + 1 - aa_shift);
+
+            if(cover < 0) cover = -cover;
+            if(m_filling_rule == fill_even_odd)
+            {
+                cover &= aa_mask2;
+                if(cover > aa_scale)
+                {
+                    cover = aa_scale2 - cover;
+                }
+            }
+            if(cover > aa_mask) cover = aa_mask;
+            return m_gamma[cover];
+        }
+
+        //--------------------------------------------------------------------
+        template<class Scanline> bool sweep_scanline(Scanline& sl)
+        {
+            for(;;)
+            {
+                if(m_scan_y > m_outline.max_y()) return false;
+                sl.reset_spans();
+                unsigned num_cells = m_outline.scanline_num_cells(m_scan_y);
+                const cell_aa* const* cells = m_outline.scanline_cells(m_scan_y);
+                int cover = 0;
+
+                while(num_cells)
+                {
+                    const cell_aa* cur_cell = *cells;
+                    int x    = cur_cell->x;
+                    int area = cur_cell->area;
+                    unsigned alpha;
+
+                    cover += cur_cell->cover;
+
+                    //accumulate all cells with the same X
+                    while(--num_cells)
+                    {
+                        cur_cell = *++cells;
+                        if(cur_cell->x != x) break;
+                        area  += cur_cell->area;
+                        cover += cur_cell->cover;
+                    }
+
+                    if(area)
+                    {
+                        alpha = calculate_alpha((cover << (poly_subpixel_shift + 1)) - area);
+                        if(alpha)
+                        {
+                            sl.add_cell(x, alpha);
+                        }
+                        x++;
+                    }
+
+                    if(num_cells && cur_cell->x > x)
+                    {
+                        alpha = calculate_alpha(cover << (poly_subpixel_shift + 1));
+                        if(alpha)
+                        {
+                            sl.add_span(x, cur_cell->x - x, alpha);
+                        }
+                    }
+                }
+        
+                if(sl.num_spans()) break;
+                ++m_scan_y;
+            }
+
+            sl.finalize(m_scan_y);
+            ++m_scan_y;
+            return true;
+        }
+
+        //--------------------------------------------------------------------
+        bool hit_test(int tx, int ty);
+
+
+    private:
+        //--------------------------------------------------------------------
+        // Disable copying
+        rasterizer_scanline_aa(const rasterizer_scanline_aa<Clip>&);
+        const rasterizer_scanline_aa<Clip>& 
+        operator = (const rasterizer_scanline_aa<Clip>&);
+
+    private:
+        rasterizer_cells_aa<cell_aa> m_outline;
+        clip_type      m_clipper;
+        int            m_gamma[aa_scale];
+        filling_rule_e m_filling_rule;
+        bool           m_auto_close;
+        coord_type     m_start_x;
+        coord_type     m_start_y;
+        unsigned       m_status;
+        int            m_scan_y;
+    };
+
+
+
+
+
+
+
+
+
+
+
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::reset() 
+    { 
+        m_outline.reset(); 
+        m_status = status_initial;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::filling_rule(filling_rule_e filling_rule) 
+    { 
+        m_filling_rule = filling_rule; 
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::clip_box(double x1, double y1, 
+                                                double x2, double y2)
+    {
+        reset();
+        m_clipper.clip_box(conv_type::upscale(x1), conv_type::upscale(y1), 
+                           conv_type::upscale(x2), conv_type::upscale(y2));
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::reset_clipping()
+    {
+        reset();
+        m_clipper.reset_clipping();
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::close_polygon()
+    {
+        if(m_status == status_line_to)
+        {
+            m_clipper.line_to(m_outline, m_start_x, m_start_y);
+            m_status = status_closed;
+        }
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::move_to(int x, int y)
+    {
+        if(m_outline.sorted()) reset();
+        if(m_auto_close) close_polygon();
+        m_clipper.move_to(m_start_x = conv_type::downscale(x), 
+                          m_start_y = conv_type::downscale(y));
+        m_status = status_move_to;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::line_to(int x, int y)
+    {
+        m_clipper.line_to(m_outline, 
+                          conv_type::downscale(x), 
+                          conv_type::downscale(y));
+        m_status = status_line_to;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::move_to_d(double x, double y) 
+    { 
+        if(m_outline.sorted()) reset();
+        if(m_auto_close) close_polygon();
+        m_clipper.move_to(m_start_x = conv_type::upscale(x), 
+                          m_start_y = conv_type::upscale(y)); 
+        m_status = status_move_to;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::line_to_d(double x, double y) 
+    { 
+        m_clipper.line_to(m_outline, 
+                          conv_type::upscale(x), 
+                          conv_type::upscale(y)); 
+        m_status = status_line_to;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::add_vertex(double x, double y, unsigned cmd)
+    {
+        if(is_move_to(cmd)) 
+        {
+            move_to_d(x, y);
+        }
+        else 
+        if(is_vertex(cmd))
+        {
+            line_to_d(x, y);
+        }
+        else
+        if(is_close(cmd))
+        {
+            close_polygon();
+        }
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::edge(int x1, int y1, int x2, int y2)
+    {
+        if(m_outline.sorted()) reset();
+        m_clipper.move_to(conv_type::downscale(x1), conv_type::downscale(y1));
+        m_clipper.line_to(m_outline, 
+                          conv_type::downscale(x2), 
+                          conv_type::downscale(y2));
+        m_status = status_move_to;
+    }
+    
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::edge_d(double x1, double y1, 
+                                              double x2, double y2)
+    {
+        if(m_outline.sorted()) reset();
+        m_clipper.move_to(conv_type::upscale(x1), conv_type::upscale(y1)); 
+        m_clipper.line_to(m_outline, 
+                          conv_type::upscale(x2), 
+                          conv_type::upscale(y2)); 
+        m_status = status_move_to;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa<Clip>::sort()
+    {
+        if(m_auto_close) close_polygon();
+        m_outline.sort_cells();
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    AGG_INLINE bool rasterizer_scanline_aa<Clip>::rewind_scanlines()
+    {
+        if(m_auto_close) close_polygon();
+        m_outline.sort_cells();
+        if(m_outline.total_cells() == 0) 
+        {
+            return false;
+        }
+        m_scan_y = m_outline.min_y();
+        return true;
+    }
+
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    AGG_INLINE bool rasterizer_scanline_aa<Clip>::navigate_scanline(int y)
+    {
+        if(m_auto_close) close_polygon();
+        m_outline.sort_cells();
+        if(m_outline.total_cells() == 0 || 
+           y < m_outline.min_y() || 
+           y > m_outline.max_y()) 
+        {
+            return false;
+        }
+        m_scan_y = y;
+        return true;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    bool rasterizer_scanline_aa<Clip>::hit_test(int tx, int ty)
+    {
+        if(!navigate_scanline(ty)) return false;
+        scanline_hit_test sl(tx);
+        sweep_scanline(sl);
+        return sl.hit();
+    }
+
+
+
+}
+
+
+
+#endif
+

deps_src/agg/agg_rasterizer_scanline_aa_nogamma.h

@@ -0,0 +1,483 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+//
+// The author gratefully acknowleges the support of David Turner, 
+// Robert Wilhelm, and Werner Lemberg - the authors of the FreeType 
+// libray - in producing this work. See http://www.freetype.org for details.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Adaptation for 32-bit screen coordinates has been sponsored by 
+// Liberty Technology Systems, Inc., visit http://lib-sys.com
+//
+// Liberty Technology Systems, Inc. is the provider of
+// PostScript and PDF technology for software developers.
+// 
+//----------------------------------------------------------------------------
+#ifndef AGG_RASTERIZER_SCANLINE_AA_NOGAMMA_INCLUDED
+#define AGG_RASTERIZER_SCANLINE_AA_NOGAMMA_INCLUDED
+
+#include <limits>
+#include "agg_rasterizer_cells_aa.h"
+#include "agg_rasterizer_sl_clip.h"
+
+
+namespace agg
+{
+
+
+    //-----------------------------------------------------------------cell_aa
+    // A pixel cell. There're no constructors defined and it was done 
+    // intentionally in order to avoid extra overhead when allocating an 
+    // array of cells.
+    struct cell_aa
+    {
+        int x;
+        int y;
+        int cover;
+        int area;
+
+        void initial()
+        {
+            x = std::numeric_limits<int>::max();
+            y = std::numeric_limits<int>::max();
+            cover = 0;
+            area  = 0;
+        }
+
+        void style(const cell_aa&) {}
+
+        int not_equal(int ex, int ey, const cell_aa&) const
+        {
+            return ((unsigned)ex - (unsigned)x) | ((unsigned)ey - (unsigned)y);
+        }
+    };
+
+
+    //==================================================rasterizer_scanline_aa_nogamma
+    // Polygon rasterizer that is used to render filled polygons with 
+    // high-quality Anti-Aliasing. Internally, by default, the class uses 
+    // integer coordinates in format 24.8, i.e. 24 bits for integer part 
+    // and 8 bits for fractional - see poly_subpixel_shift. This class can be 
+    // used in the following  way:
+    //
+    // 1. filling_rule(filling_rule_e ft) - optional.
+    //
+    // 2. gamma() - optional.
+    //
+    // 3. reset()
+    //
+    // 4. move_to(x, y) / line_to(x, y) - make the polygon. One can create 
+    //    more than one contour, but each contour must consist of at least 3
+    //    vertices, i.e. move_to(x1, y1); line_to(x2, y2); line_to(x3, y3);
+    //    is the absolute minimum of vertices that define a triangle.
+    //    The algorithm does not check either the number of vertices nor
+    //    coincidence of their coordinates, but in the worst case it just 
+    //    won't draw anything.
+    //    The orger of the vertices (clockwise or counterclockwise) 
+    //    is important when using the non-zero filling rule (fill_non_zero).
+    //    In this case the vertex order of all the contours must be the same
+    //    if you want your intersecting polygons to be without "holes".
+    //    You actually can use different vertices order. If the contours do not 
+    //    intersect each other the order is not important anyway. If they do, 
+    //    contours with the same vertex order will be rendered without "holes" 
+    //    while the intersecting contours with different orders will have "holes".
+    //
+    // filling_rule() and gamma() can be called anytime before "sweeping".
+    //------------------------------------------------------------------------
+    template<class Clip=rasterizer_sl_clip_int> class rasterizer_scanline_aa_nogamma
+    {
+        enum status
+        {
+            status_initial,
+            status_move_to,
+            status_line_to,
+            status_closed
+        };
+
+    public:
+        typedef Clip                      clip_type;
+        typedef typename Clip::conv_type  conv_type;
+        typedef typename Clip::coord_type coord_type;
+
+        enum aa_scale_e
+        {
+            aa_shift  = 8,
+            aa_scale  = 1 << aa_shift,
+            aa_mask   = aa_scale - 1,
+            aa_scale2 = aa_scale * 2,
+            aa_mask2  = aa_scale2 - 1
+        };
+
+        //--------------------------------------------------------------------
+        rasterizer_scanline_aa_nogamma() : 
+            m_outline(),
+            m_clipper(),
+            m_filling_rule(fill_non_zero),
+            m_auto_close(true),
+            m_start_x(0),
+            m_start_y(0),
+            m_status(status_initial)
+        {
+        }
+
+        //--------------------------------------------------------------------
+        void reset(); 
+        void reset_clipping();
+        void clip_box(double x1, double y1, double x2, double y2);
+        void filling_rule(filling_rule_e filling_rule);
+        void auto_close(bool flag) { m_auto_close = flag; }
+
+        //--------------------------------------------------------------------
+        unsigned apply_gamma(unsigned cover) const 
+        { 
+            return cover;
+        }
+
+        //--------------------------------------------------------------------
+        void move_to(int x, int y);
+        void line_to(int x, int y);
+        void move_to_d(double x, double y);
+        void line_to_d(double x, double y);
+        void close_polygon();
+        void add_vertex(double x, double y, unsigned cmd);
+
+        void edge(int x1, int y1, int x2, int y2);
+        void edge_d(double x1, double y1, double x2, double y2);
+
+        //-------------------------------------------------------------------
+        template<class VertexSource>
+        void add_path(VertexSource& vs, unsigned path_id=0)
+        {
+            double x;
+            double y;
+
+            unsigned cmd;
+            vs.rewind(path_id);
+            if(m_outline.sorted()) reset();
+            while(!is_stop(cmd = vs.vertex(&x, &y)))
+            {
+                add_vertex(x, y, cmd);
+            }
+        }
+        
+        //--------------------------------------------------------------------
+        int min_x() const { return m_outline.min_x(); }
+        int min_y() const { return m_outline.min_y(); }
+        int max_x() const { return m_outline.max_x(); }
+        int max_y() const { return m_outline.max_y(); }
+
+        //--------------------------------------------------------------------
+        void sort();
+        bool rewind_scanlines();
+        bool navigate_scanline(int y);
+
+        //--------------------------------------------------------------------
+        AGG_INLINE unsigned calculate_alpha(int area) const
+        {
+            int cover = area >> (poly_subpixel_shift*2 + 1 - aa_shift);
+
+            if(cover < 0) cover = -cover;
+            if(m_filling_rule == fill_even_odd)
+            {
+                cover &= aa_mask2;
+                if(cover > aa_scale)
+                {
+                    cover = aa_scale2 - cover;
+                }
+            }
+            if(cover > aa_mask) cover = aa_mask;
+            return cover;
+        }
+
+        //--------------------------------------------------------------------
+        template<class Scanline> bool sweep_scanline(Scanline& sl)
+        {
+            for(;;)
+            {
+                if(m_scan_y > m_outline.max_y()) return false;
+                sl.reset_spans();
+                unsigned num_cells = m_outline.scanline_num_cells(m_scan_y);
+                const cell_aa* const* cells = m_outline.scanline_cells(m_scan_y);
+                int cover = 0;
+
+                while(num_cells)
+                {
+                    const cell_aa* cur_cell = *cells;
+                    int x    = cur_cell->x;
+                    int area = cur_cell->area;
+                    unsigned alpha;
+
+                    cover += cur_cell->cover;
+
+                    //accumulate all cells with the same X
+                    while(--num_cells)
+                    {
+                        cur_cell = *++cells;
+                        if(cur_cell->x != x) break;
+                        area  += cur_cell->area;
+                        cover += cur_cell->cover;
+                    }
+
+                    if(area)
+                    {
+                        alpha = calculate_alpha((cover << (poly_subpixel_shift + 1)) - area);
+                        if(alpha)
+                        {
+                            sl.add_cell(x, alpha);
+                        }
+                        x++;
+                    }
+
+                    if(num_cells && cur_cell->x > x)
+                    {
+                        alpha = calculate_alpha(cover << (poly_subpixel_shift + 1));
+                        if(alpha)
+                        {
+                            sl.add_span(x, cur_cell->x - x, alpha);
+                        }
+                    }
+                }
+        
+                if(sl.num_spans()) break;
+                ++m_scan_y;
+            }
+
+            sl.finalize(m_scan_y);
+            ++m_scan_y;
+            return true;
+        }
+
+        //--------------------------------------------------------------------
+        bool hit_test(int tx, int ty);
+
+
+    private:
+        //--------------------------------------------------------------------
+        // Disable copying
+        rasterizer_scanline_aa_nogamma(const rasterizer_scanline_aa_nogamma<Clip>&);
+        const rasterizer_scanline_aa_nogamma<Clip>& 
+        operator = (const rasterizer_scanline_aa_nogamma<Clip>&);
+
+    private:
+        rasterizer_cells_aa<cell_aa> m_outline;
+        clip_type      m_clipper;
+        filling_rule_e m_filling_rule;
+        bool           m_auto_close;
+        coord_type     m_start_x;
+        coord_type     m_start_y;
+        unsigned       m_status;
+        int            m_scan_y;
+    };
+
+
+
+
+
+
+
+
+
+
+
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::reset() 
+    { 
+        m_outline.reset(); 
+        m_status = status_initial;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::filling_rule(filling_rule_e filling_rule) 
+    { 
+        m_filling_rule = filling_rule; 
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::clip_box(double x1, double y1, 
+                                                double x2, double y2)
+    {
+        reset();
+        m_clipper.clip_box(conv_type::upscale(x1), conv_type::upscale(y1), 
+                           conv_type::upscale(x2), conv_type::upscale(y2));
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::reset_clipping()
+    {
+        reset();
+        m_clipper.reset_clipping();
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::close_polygon()
+    {
+        if(m_status == status_line_to)
+        {
+            m_clipper.line_to(m_outline, m_start_x, m_start_y);
+            m_status = status_closed;
+        }
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::move_to(int x, int y)
+    {
+        if(m_outline.sorted()) reset();
+        if(m_auto_close) close_polygon();
+        m_clipper.move_to(m_start_x = conv_type::downscale(x), 
+                          m_start_y = conv_type::downscale(y));
+        m_status = status_move_to;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::line_to(int x, int y)
+    {
+        m_clipper.line_to(m_outline, 
+                          conv_type::downscale(x), 
+                          conv_type::downscale(y));
+        m_status = status_line_to;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::move_to_d(double x, double y) 
+    { 
+        if(m_outline.sorted()) reset();
+        if(m_auto_close) close_polygon();
+        m_clipper.move_to(m_start_x = conv_type::upscale(x), 
+                          m_start_y = conv_type::upscale(y)); 
+        m_status = status_move_to;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::line_to_d(double x, double y) 
+    { 
+        m_clipper.line_to(m_outline, 
+                          conv_type::upscale(x), 
+                          conv_type::upscale(y)); 
+        m_status = status_line_to;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::add_vertex(double x, double y, unsigned cmd)
+    {
+        if(is_move_to(cmd)) 
+        {
+            move_to_d(x, y);
+        }
+        else 
+        if(is_vertex(cmd))
+        {
+            line_to_d(x, y);
+        }
+        else
+        if(is_close(cmd))
+        {
+            close_polygon();
+        }
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::edge(int x1, int y1, int x2, int y2)
+    {
+        if(m_outline.sorted()) reset();
+        m_clipper.move_to(conv_type::downscale(x1), conv_type::downscale(y1));
+        m_clipper.line_to(m_outline, 
+                          conv_type::downscale(x2), 
+                          conv_type::downscale(y2));
+        m_status = status_move_to;
+    }
+    
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::edge_d(double x1, double y1, 
+                                              double x2, double y2)
+    {
+        if(m_outline.sorted()) reset();
+        m_clipper.move_to(conv_type::upscale(x1), conv_type::upscale(y1)); 
+        m_clipper.line_to(m_outline, 
+                          conv_type::upscale(x2), 
+                          conv_type::upscale(y2)); 
+        m_status = status_move_to;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    void rasterizer_scanline_aa_nogamma<Clip>::sort()
+    {
+        if(m_auto_close) close_polygon();
+        m_outline.sort_cells();
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    AGG_INLINE bool rasterizer_scanline_aa_nogamma<Clip>::rewind_scanlines()
+    {
+        if(m_auto_close) close_polygon();
+        m_outline.sort_cells();
+        if(m_outline.total_cells() == 0) 
+        {
+            return false;
+        }
+        m_scan_y = m_outline.min_y();
+        return true;
+    }
+
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    AGG_INLINE bool rasterizer_scanline_aa_nogamma<Clip>::navigate_scanline(int y)
+    {
+        if(m_auto_close) close_polygon();
+        m_outline.sort_cells();
+        if(m_outline.total_cells() == 0 || 
+           y < m_outline.min_y() || 
+           y > m_outline.max_y()) 
+        {
+            return false;
+        }
+        m_scan_y = y;
+        return true;
+    }
+
+    //------------------------------------------------------------------------
+    template<class Clip> 
+    bool rasterizer_scanline_aa_nogamma<Clip>::hit_test(int tx, int ty)
+    {
+        if(!navigate_scanline(ty)) return false;
+        scanline_hit_test sl(tx);
+        sweep_scanline(sl);
+        return sl.hit();
+    }
+
+
+
+}
+
+
+
+#endif
+

deps_src/agg/agg_rasterizer_sl_clip.h

@@ -0,0 +1,351 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+#ifndef AGG_RASTERIZER_SL_CLIP_INCLUDED
+#define AGG_RASTERIZER_SL_CLIP_INCLUDED
+
+#include "agg_clip_liang_barsky.h"
+
+namespace agg
+{
+    //--------------------------------------------------------poly_max_coord_e
+    enum poly_max_coord_e
+    {
+        poly_max_coord = (1 << 30) - 1 //----poly_max_coord
+    };
+    
+    //------------------------------------------------------------ras_conv_int
+    struct ras_conv_int
+    {
+        typedef int coord_type;
+        static AGG_INLINE int mul_div(double a, double b, double c)
+        {
+            return iround(a * b / c);
+        }
+        static int xi(int v) { return v; }
+        static int yi(int v) { return v; }
+        static int upscale(double v) { return iround(v * poly_subpixel_scale); }
+        static int downscale(int v)  { return v; }
+    };
+
+    //--------------------------------------------------------ras_conv_int_sat
+    struct ras_conv_int_sat
+    {
+        typedef int coord_type;
+        static AGG_INLINE int mul_div(double a, double b, double c)
+        {
+            return saturation<poly_max_coord>::iround(a * b / c);
+        }
+        static int xi(int v) { return v; }
+        static int yi(int v) { return v; }
+        static int upscale(double v) 
+        { 
+            return saturation<poly_max_coord>::iround(v * poly_subpixel_scale); 
+        }
+        static int downscale(int v) { return v; }
+    };
+
+    //---------------------------------------------------------ras_conv_int_3x
+    struct ras_conv_int_3x
+    {
+        typedef int coord_type;
+        static AGG_INLINE int mul_div(double a, double b, double c)
+        {
+            return iround(a * b / c);
+        }
+        static int xi(int v) { return v * 3; }
+        static int yi(int v) { return v; }
+        static int upscale(double v) { return iround(v * poly_subpixel_scale); }
+        static int downscale(int v)  { return v; }
+    };
+
+    //-----------------------------------------------------------ras_conv_dbl
+    struct ras_conv_dbl
+    {
+        typedef double coord_type;
+        static AGG_INLINE double mul_div(double a, double b, double c)
+        {
+            return a * b / c;
+        }
+        static int xi(double v) { return iround(v * poly_subpixel_scale); }
+        static int yi(double v) { return iround(v * poly_subpixel_scale); }
+        static double upscale(double v) { return v; }
+        static double downscale(int v)  { return v / double(poly_subpixel_scale); }
+    };
+
+    //--------------------------------------------------------ras_conv_dbl_3x
+    struct ras_conv_dbl_3x
+    {
+        typedef double coord_type;
+        static AGG_INLINE double mul_div(double a, double b, double c)
+        {
+            return a * b / c;
+        }
+        static int xi(double v) { return iround(v * poly_subpixel_scale * 3); }
+        static int yi(double v) { return iround(v * poly_subpixel_scale); }
+        static double upscale(double v) { return v; }
+        static double downscale(int v)  { return v / double(poly_subpixel_scale); }
+    };
+
+
+
+
+
+    //------------------------------------------------------rasterizer_sl_clip
+    template<class Conv> class rasterizer_sl_clip
+    {
+    public:
+        typedef Conv                      conv_type;
+        typedef typename Conv::coord_type coord_type;
+        typedef rect_base<coord_type>     rect_type;
+
+        //--------------------------------------------------------------------
+        rasterizer_sl_clip() :  
+            m_clip_box(0,0,0,0),
+            m_x1(0),
+            m_y1(0),
+            m_f1(0),
+            m_clipping(false) 
+        {}
+
+        //--------------------------------------------------------------------
+        void reset_clipping()
+        {
+            m_clipping = false;
+        }
+
+        //--------------------------------------------------------------------
+        void clip_box(coord_type x1, coord_type y1, coord_type x2, coord_type y2)
+        {
+            m_clip_box = rect_type(x1, y1, x2, y2);
+            m_clip_box.normalize();
+            m_clipping = true;
+        }
+
+        //--------------------------------------------------------------------
+        void move_to(coord_type x1, coord_type y1)
+        {
+            m_x1 = x1;
+            m_y1 = y1;
+            if(m_clipping) m_f1 = clipping_flags(x1, y1, m_clip_box);
+        }
+
+    private:
+        //------------------------------------------------------------------------
+        template<class Rasterizer>
+        AGG_INLINE void line_clip_y(Rasterizer& ras,
+                                    coord_type x1, coord_type y1, 
+                                    coord_type x2, coord_type y2, 
+                                    unsigned   f1, unsigned   f2) const
+        {
+            f1 &= 10;
+            f2 &= 10;
+            if((f1 | f2) == 0)
+            {
+                // Fully visible
+                ras.line(Conv::xi(x1), Conv::yi(y1), Conv::xi(x2), Conv::yi(y2)); 
+            }
+            else
+            {
+                if(f1 == f2)
+                {
+                    // Invisible by Y
+                    return;
+                }
+
+                coord_type tx1 = x1;
+                coord_type ty1 = y1;
+                coord_type tx2 = x2;
+                coord_type ty2 = y2;
+
+                if(f1 & 8) // y1 < clip.y1
+                {
+                    tx1 = x1 + Conv::mul_div(m_clip_box.y1-y1, x2-x1, y2-y1);
+                    ty1 = m_clip_box.y1;
+                }
+
+                if(f1 & 2) // y1 > clip.y2
+                {
+                    tx1 = x1 + Conv::mul_div(m_clip_box.y2-y1, x2-x1, y2-y1);
+                    ty1 = m_clip_box.y2;
+                }
+
+                if(f2 & 8) // y2 < clip.y1
+                {
+                    tx2 = x1 + Conv::mul_div(m_clip_box.y1-y1, x2-x1, y2-y1);
+                    ty2 = m_clip_box.y1;
+                }
+
+                if(f2 & 2) // y2 > clip.y2
+                {
+                    tx2 = x1 + Conv::mul_div(m_clip_box.y2-y1, x2-x1, y2-y1);
+                    ty2 = m_clip_box.y2;
+                }
+                ras.line(Conv::xi(tx1), Conv::yi(ty1), 
+                         Conv::xi(tx2), Conv::yi(ty2)); 
+            }
+        }
+
+
+    public:
+        //--------------------------------------------------------------------
+        template<class Rasterizer>
+        void line_to(Rasterizer& ras, coord_type x2, coord_type y2)
+        {
+            if(m_clipping)
+            {
+                unsigned f2 = clipping_flags(x2, y2, m_clip_box);
+
+                if((m_f1 & 10) == (f2 & 10) && (m_f1 & 10) != 0)
+                {
+                    // Invisible by Y
+                    m_x1 = x2;
+                    m_y1 = y2;
+                    m_f1 = f2;
+                    return;
+                }
+
+                coord_type x1 = m_x1;
+                coord_type y1 = m_y1;
+                unsigned   f1 = m_f1;
+                coord_type y3, y4;
+                unsigned   f3, f4;
+
+                switch(((f1 & 5) << 1) | (f2 & 5))
+                {
+                case 0: // Visible by X
+                    line_clip_y(ras, x1, y1, x2, y2, f1, f2);
+                    break;
+
+                case 1: // x2 > clip.x2
+                    y3 = y1 + Conv::mul_div(m_clip_box.x2-x1, y2-y1, x2-x1);
+                    f3 = clipping_flags_y(y3, m_clip_box);
+                    line_clip_y(ras, x1, y1, m_clip_box.x2, y3, f1, f3);
+                    line_clip_y(ras, m_clip_box.x2, y3, m_clip_box.x2, y2, f3, f2);
+                    break;
+
+                case 2: // x1 > clip.x2
+                    y3 = y1 + Conv::mul_div(m_clip_box.x2-x1, y2-y1, x2-x1);
+                    f3 = clipping_flags_y(y3, m_clip_box);
+                    line_clip_y(ras, m_clip_box.x2, y1, m_clip_box.x2, y3, f1, f3);
+                    line_clip_y(ras, m_clip_box.x2, y3, x2, y2, f3, f2);
+                    break;
+
+                case 3: // x1 > clip.x2 && x2 > clip.x2
+                    line_clip_y(ras, m_clip_box.x2, y1, m_clip_box.x2, y2, f1, f2);
+                    break;
+
+                case 4: // x2 < clip.x1
+                    y3 = y1 + Conv::mul_div(m_clip_box.x1-x1, y2-y1, x2-x1);
+                    f3 = clipping_flags_y(y3, m_clip_box);
+                    line_clip_y(ras, x1, y1, m_clip_box.x1, y3, f1, f3);
+                    line_clip_y(ras, m_clip_box.x1, y3, m_clip_box.x1, y2, f3, f2);
+                    break;
+
+                case 6: // x1 > clip.x2 && x2 < clip.x1
+                    y3 = y1 + Conv::mul_div(m_clip_box.x2-x1, y2-y1, x2-x1);
+                    y4 = y1 + Conv::mul_div(m_clip_box.x1-x1, y2-y1, x2-x1);
+                    f3 = clipping_flags_y(y3, m_clip_box);
+                    f4 = clipping_flags_y(y4, m_clip_box);
+                    line_clip_y(ras, m_clip_box.x2, y1, m_clip_box.x2, y3, f1, f3);
+                    line_clip_y(ras, m_clip_box.x2, y3, m_clip_box.x1, y4, f3, f4);
+                    line_clip_y(ras, m_clip_box.x1, y4, m_clip_box.x1, y2, f4, f2);
+                    break;
+
+                case 8: // x1 < clip.x1
+                    y3 = y1 + Conv::mul_div(m_clip_box.x1-x1, y2-y1, x2-x1);
+                    f3 = clipping_flags_y(y3, m_clip_box);
+                    line_clip_y(ras, m_clip_box.x1, y1, m_clip_box.x1, y3, f1, f3);
+                    line_clip_y(ras, m_clip_box.x1, y3, x2, y2, f3, f2);
+                    break;
+
+                case 9:  // x1 < clip.x1 && x2 > clip.x2
+                    y3 = y1 + Conv::mul_div(m_clip_box.x1-x1, y2-y1, x2-x1);
+                    y4 = y1 + Conv::mul_div(m_clip_box.x2-x1, y2-y1, x2-x1);
+                    f3 = clipping_flags_y(y3, m_clip_box);
+                    f4 = clipping_flags_y(y4, m_clip_box);
+                    line_clip_y(ras, m_clip_box.x1, y1, m_clip_box.x1, y3, f1, f3);
+                    line_clip_y(ras, m_clip_box.x1, y3, m_clip_box.x2, y4, f3, f4);
+                    line_clip_y(ras, m_clip_box.x2, y4, m_clip_box.x2, y2, f4, f2);
+                    break;
+
+                case 12: // x1 < clip.x1 && x2 < clip.x1
+                    line_clip_y(ras, m_clip_box.x1, y1, m_clip_box.x1, y2, f1, f2);
+                    break;
+                }
+                m_f1 = f2;
+            }
+            else
+            {
+                ras.line(Conv::xi(m_x1), Conv::yi(m_y1), 
+                         Conv::xi(x2),   Conv::yi(y2)); 
+            }
+            m_x1 = x2;
+            m_y1 = y2;
+        }
+
+
+    private:
+        rect_type        m_clip_box;
+        coord_type       m_x1;
+        coord_type       m_y1;
+        unsigned         m_f1;
+        bool             m_clipping;
+    };
+
+
+
+
+    //---------------------------------------------------rasterizer_sl_no_clip
+    class rasterizer_sl_no_clip
+    {
+    public:
+        typedef ras_conv_int conv_type;
+        typedef int          coord_type;
+
+        rasterizer_sl_no_clip() : m_x1(0), m_y1(0) {}
+
+        void reset_clipping() {}
+        void clip_box(coord_type, coord_type, coord_type, coord_type) {}
+        void move_to(coord_type x1, coord_type y1) { m_x1 = x1; m_y1 = y1; }
+
+        template<class Rasterizer>
+        void line_to(Rasterizer& ras, coord_type x2, coord_type y2) 
+        { 
+            ras.line(m_x1, m_y1, x2, y2); 
+            m_x1 = x2; 
+            m_y1 = y2;
+        }
+
+    private:
+        int m_x1, m_y1;
+    };
+
+
+    //                                         -----rasterizer_sl_clip_int
+    //                                         -----rasterizer_sl_clip_int_sat
+    //                                         -----rasterizer_sl_clip_int_3x
+    //                                         -----rasterizer_sl_clip_dbl
+    //                                         -----rasterizer_sl_clip_dbl_3x
+    //------------------------------------------------------------------------
+    typedef rasterizer_sl_clip<ras_conv_int>     rasterizer_sl_clip_int;
+    typedef rasterizer_sl_clip<ras_conv_int_sat> rasterizer_sl_clip_int_sat;
+    typedef rasterizer_sl_clip<ras_conv_int_3x>  rasterizer_sl_clip_int_3x;
+    typedef rasterizer_sl_clip<ras_conv_dbl>     rasterizer_sl_clip_dbl;
+    typedef rasterizer_sl_clip<ras_conv_dbl_3x>  rasterizer_sl_clip_dbl_3x;
+
+
+}
+
+#endif

deps_src/agg/agg_renderer_base.h

@@ -0,0 +1,731 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// class renderer_base
+//
+//----------------------------------------------------------------------------
+
+#ifndef AGG_RENDERER_BASE_INCLUDED
+#define AGG_RENDERER_BASE_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_rendering_buffer.h"
+
+namespace agg
+{
+
+    //-----------------------------------------------------------renderer_base
+    template<class PixelFormat> class renderer_base
+    {
+    public:
+        typedef PixelFormat pixfmt_type;
+        typedef typename pixfmt_type::color_type color_type;
+        typedef typename pixfmt_type::row_data row_data;
+
+        //--------------------------------------------------------------------
+        renderer_base() : m_ren(0), m_clip_box(1, 1, 0, 0) {}
+        explicit renderer_base(pixfmt_type& ren) :
+            m_ren(&ren),
+            m_clip_box(0, 0, ren.width() - 1, ren.height() - 1)
+        {}
+        void attach(pixfmt_type& ren)
+        {
+            m_ren = &ren;
+            m_clip_box = rect_i(0, 0, ren.width() - 1, ren.height() - 1);
+        }
+
+        //--------------------------------------------------------------------
+        const pixfmt_type& ren() const { return *m_ren;  }
+        pixfmt_type& ren() { return *m_ren;  }
+          
+        //--------------------------------------------------------------------
+        unsigned width()  const { return m_ren->width();  }
+        unsigned height() const { return m_ren->height(); }
+
+        //--------------------------------------------------------------------
+        bool clip_box(int x1, int y1, int x2, int y2)
+        {
+            rect_i cb(x1, y1, x2, y2);
+            cb.normalize();
+            if(cb.clip(rect_i(0, 0, width() - 1, height() - 1)))
+            {
+                m_clip_box = cb;
+                return true;
+            }
+            m_clip_box.x1 = 1;
+            m_clip_box.y1 = 1;
+            m_clip_box.x2 = 0;
+            m_clip_box.y2 = 0;
+            return false;
+        }
+
+        //--------------------------------------------------------------------
+        void reset_clipping(bool visibility)
+        {
+            if(visibility)
+            {
+                m_clip_box.x1 = 0;
+                m_clip_box.y1 = 0;
+                m_clip_box.x2 = width() - 1;
+                m_clip_box.y2 = height() - 1;
+            }
+            else
+            {
+                m_clip_box.x1 = 1;
+                m_clip_box.y1 = 1;
+                m_clip_box.x2 = 0;
+                m_clip_box.y2 = 0;
+            }
+        }
+
+        //--------------------------------------------------------------------
+        void clip_box_naked(int x1, int y1, int x2, int y2)
+        {
+            m_clip_box.x1 = x1;
+            m_clip_box.y1 = y1;
+            m_clip_box.x2 = x2;
+            m_clip_box.y2 = y2;
+        }
+
+        //--------------------------------------------------------------------
+        bool inbox(int x, int y) const
+        {
+            return x >= m_clip_box.x1 && y >= m_clip_box.y1 &&
+                   x <= m_clip_box.x2 && y <= m_clip_box.y2;
+        }
+
+        //--------------------------------------------------------------------
+        const rect_i& clip_box() const { return m_clip_box;    }
+        int           xmin()     const { return m_clip_box.x1; }
+        int           ymin()     const { return m_clip_box.y1; }
+        int           xmax()     const { return m_clip_box.x2; }
+        int           ymax()     const { return m_clip_box.y2; }
+
+        //--------------------------------------------------------------------
+        const rect_i& bounding_clip_box() const { return m_clip_box;    }
+        int           bounding_xmin()     const { return m_clip_box.x1; }
+        int           bounding_ymin()     const { return m_clip_box.y1; }
+        int           bounding_xmax()     const { return m_clip_box.x2; }
+        int           bounding_ymax()     const { return m_clip_box.y2; }
+
+        //--------------------------------------------------------------------
+        void clear(const color_type& c)
+        {
+            unsigned y;
+            if(width())
+            {
+                for(y = 0; y < height(); y++)
+                {
+                    m_ren->copy_hline(0, y, width(), c);
+                }
+            }
+        }
+          
+
+        //--------------------------------------------------------------------
+        void fill(const color_type& c)
+        {
+            unsigned y;
+            if(width())
+            {
+                for(y = 0; y < height(); y++)
+                {
+                    m_ren->blend_hline(0, y, width(), c, cover_mask);
+                }
+            }
+        }
+        
+        //--------------------------------------------------------------------
+        void copy_pixel(int x, int y, const color_type& c)
+        {
+            if(inbox(x, y))
+            {
+                m_ren->copy_pixel(x, y, c);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        void blend_pixel(int x, int y, const color_type& c, cover_type cover)
+        {
+            if(inbox(x, y))
+            {
+                m_ren->blend_pixel(x, y, c, cover);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        color_type pixel(int x, int y) const
+        {
+            return inbox(x, y) ? 
+                   m_ren->pixel(x, y) :
+                   color_type::no_color();
+        }
+
+        //--------------------------------------------------------------------
+        void copy_hline(int x1, int y, int x2, const color_type& c)
+        {
+            if(x1 > x2) { int t = x2; x2 = x1; x1 = t; }
+            if(y  > ymax()) return;
+            if(y  < ymin()) return;
+            if(x1 > xmax()) return;
+            if(x2 < xmin()) return;
+
+            if(x1 < xmin()) x1 = xmin();
+            if(x2 > xmax()) x2 = xmax();
+
+            m_ren->copy_hline(x1, y, x2 - x1 + 1, c);
+        }
+
+        //--------------------------------------------------------------------
+        void copy_vline(int x, int y1, int y2, const color_type& c)
+        {
+            if(y1 > y2) { int t = y2; y2 = y1; y1 = t; }
+            if(x  > xmax()) return;
+            if(x  < xmin()) return;
+            if(y1 > ymax()) return;
+            if(y2 < ymin()) return;
+
+            if(y1 < ymin()) y1 = ymin();
+            if(y2 > ymax()) y2 = ymax();
+
+            m_ren->copy_vline(x, y1, y2 - y1 + 1, c);
+        }
+
+        //--------------------------------------------------------------------
+        void blend_hline(int x1, int y, int x2, 
+                         const color_type& c, cover_type cover)
+        {
+            if(x1 > x2) { int t = x2; x2 = x1; x1 = t; }
+            if(y  > ymax()) return;
+            if(y  < ymin()) return;
+            if(x1 > xmax()) return;
+            if(x2 < xmin()) return;
+
+            if(x1 < xmin()) x1 = xmin();
+            if(x2 > xmax()) x2 = xmax();
+
+            m_ren->blend_hline(x1, y, x2 - x1 + 1, c, cover);
+        }
+
+        //--------------------------------------------------------------------
+        void blend_vline(int x, int y1, int y2, 
+                         const color_type& c, cover_type cover)
+        {
+            if(y1 > y2) { int t = y2; y2 = y1; y1 = t; }
+            if(x  > xmax()) return;
+            if(x  < xmin()) return;
+            if(y1 > ymax()) return;
+            if(y2 < ymin()) return;
+
+            if(y1 < ymin()) y1 = ymin();
+            if(y2 > ymax()) y2 = ymax();
+
+            m_ren->blend_vline(x, y1, y2 - y1 + 1, c, cover);
+        }
+
+
+        //--------------------------------------------------------------------
+        void copy_bar(int x1, int y1, int x2, int y2, const color_type& c)
+        {
+            rect_i rc(x1, y1, x2, y2);
+            rc.normalize();
+            if(rc.clip(clip_box()))
+            {
+                int y;
+                for(y = rc.y1; y <= rc.y2; y++)
+                {
+                    m_ren->copy_hline(rc.x1, y, unsigned(rc.x2 - rc.x1 + 1), c);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        void blend_bar(int x1, int y1, int x2, int y2, 
+                       const color_type& c, cover_type cover)
+        {
+            rect_i rc(x1, y1, x2, y2);
+            rc.normalize();
+            if(rc.clip(clip_box()))
+            {
+                int y;
+                for(y = rc.y1; y <= rc.y2; y++)
+                {
+                    m_ren->blend_hline(rc.x1,
+                                       y,
+                                       unsigned(rc.x2 - rc.x1 + 1), 
+                                       c, 
+                                       cover);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        void blend_solid_hspan(int x, int y, int len, 
+                               const color_type& c, 
+                               const cover_type* covers)
+        {
+            if(y > ymax()) return;
+            if(y < ymin()) return;
+
+            if(x < xmin())
+            {
+                len -= xmin() - x;
+                if(len <= 0) return;
+                covers += xmin() - x;
+                x = xmin();
+            }
+            if(x + len > xmax())
+            {
+                len = xmax() - x + 1;
+                if(len <= 0) return;
+            }
+            m_ren->blend_solid_hspan(x, y, len, c, covers);
+        }
+
+        //--------------------------------------------------------------------
+        void blend_solid_vspan(int x, int y, int len, 
+                               const color_type& c, 
+                               const cover_type* covers)
+        {
+            if(x > xmax()) return;
+            if(x < xmin()) return;
+
+            if(y < ymin())
+            {
+                len -= ymin() - y;
+                if(len <= 0) return;
+                covers += ymin() - y;
+                y = ymin();
+            }
+            if(y + len > ymax())
+            {
+                len = ymax() - y + 1;
+                if(len <= 0) return;
+            }
+            m_ren->blend_solid_vspan(x, y, len, c, covers);
+        }
+
+
+        //--------------------------------------------------------------------
+        void copy_color_hspan(int x, int y, int len, const color_type* colors)
+        {
+            if(y > ymax()) return;
+            if(y < ymin()) return;
+
+            if(x < xmin())
+            {
+                int d = xmin() - x;
+                len -= d;
+                if(len <= 0) return;
+                colors += d;
+                x = xmin();
+            }
+            if(x + len > xmax())
+            {
+                len = xmax() - x + 1;
+                if(len <= 0) return;
+            }
+            m_ren->copy_color_hspan(x, y, len, colors);
+        }
+
+
+        //--------------------------------------------------------------------
+        void copy_color_vspan(int x, int y, int len, const color_type* colors)
+        {
+            if(x > xmax()) return;
+            if(x < xmin()) return;
+
+            if(y < ymin())
+            {
+                int d = ymin() - y;
+                len -= d;
+                if(len <= 0) return;
+                colors += d;
+                y = ymin();
+            }
+            if(y + len > ymax())
+            {
+                len = ymax() - y + 1;
+                if(len <= 0) return;
+            }
+            m_ren->copy_color_vspan(x, y, len, colors);
+        }
+
+
+        //--------------------------------------------------------------------
+        void blend_color_hspan(int x, int y, int len, 
+                               const color_type* colors, 
+                               const cover_type* covers,
+                               cover_type cover = agg::cover_full)
+        {
+            if(y > ymax()) return;
+            if(y < ymin()) return;
+
+            if(x < xmin())
+            {
+                int d = xmin() - x;
+                len -= d;
+                if(len <= 0) return;
+                if(covers) covers += d;
+                colors += d;
+                x = xmin();
+            }
+            if(x + len > xmax())
+            {
+                len = xmax() - x + 1;
+                if(len <= 0) return;
+            }
+            m_ren->blend_color_hspan(x, y, len, colors, covers, cover);
+        }
+
+        //--------------------------------------------------------------------
+        void blend_color_vspan(int x, int y, int len, 
+                               const color_type* colors, 
+                               const cover_type* covers,
+                               cover_type cover = agg::cover_full)
+        {
+            if(x > xmax()) return;
+            if(x < xmin()) return;
+
+            if(y < ymin())
+            {
+                int d = ymin() - y;
+                len -= d;
+                if(len <= 0) return;
+                if(covers) covers += d;
+                colors += d;
+                y = ymin();
+            }
+            if(y + len > ymax())
+            {
+                len = ymax() - y + 1;
+                if(len <= 0) return;
+            }
+            m_ren->blend_color_vspan(x, y, len, colors, covers, cover);
+        }
+
+        //--------------------------------------------------------------------
+        rect_i clip_rect_area(rect_i& dst, rect_i& src, int wsrc, int hsrc) const
+        {
+            rect_i rc(0,0,0,0);
+            rect_i cb = clip_box();
+            ++cb.x2;
+            ++cb.y2;
+
+            if(src.x1 < 0)
+            {
+                dst.x1 -= src.x1;
+                src.x1 = 0;
+            }
+            if(src.y1 < 0)
+            {
+                dst.y1 -= src.y1;
+                src.y1 = 0;
+            }
+
+            if(src.x2 > wsrc) src.x2 = wsrc;
+            if(src.y2 > hsrc) src.y2 = hsrc;
+
+            if(dst.x1 < cb.x1)
+            {
+                src.x1 += cb.x1 - dst.x1;
+                dst.x1 = cb.x1;
+            }
+            if(dst.y1 < cb.y1)
+            {
+                src.y1 += cb.y1 - dst.y1;
+                dst.y1 = cb.y1;
+            }
+
+            if(dst.x2 > cb.x2) dst.x2 = cb.x2;
+            if(dst.y2 > cb.y2) dst.y2 = cb.y2;
+
+            rc.x2 = dst.x2 - dst.x1;
+            rc.y2 = dst.y2 - dst.y1;
+
+            if(rc.x2 > src.x2 - src.x1) rc.x2 = src.x2 - src.x1;
+            if(rc.y2 > src.y2 - src.y1) rc.y2 = src.y2 - src.y1;
+            return rc;
+        }
+
+        //--------------------------------------------------------------------
+        template<class RenBuf>
+        void copy_from(const RenBuf& src, 
+                       const rect_i* rect_src_ptr = 0, 
+                       int dx = 0, 
+                       int dy = 0)
+        {
+            rect_i rsrc(0, 0, src.width(), src.height());
+            if(rect_src_ptr)
+            {
+                rsrc.x1 = rect_src_ptr->x1; 
+                rsrc.y1 = rect_src_ptr->y1;
+                rsrc.x2 = rect_src_ptr->x2 + 1;
+                rsrc.y2 = rect_src_ptr->y2 + 1;
+            }
+
+            // Version with xdst, ydst (absolute positioning)
+            //rect_i rdst(xdst, ydst, xdst + rsrc.x2 - rsrc.x1, ydst + rsrc.y2 - rsrc.y1);
+
+            // Version with dx, dy (relative positioning)
+            rect_i rdst(rsrc.x1 + dx, rsrc.y1 + dy, rsrc.x2 + dx, rsrc.y2 + dy);
+
+            rect_i rc = clip_rect_area(rdst, rsrc, src.width(), src.height());
+
+            if(rc.x2 > 0)
+            {
+                int incy = 1;
+                if(rdst.y1 > rsrc.y1)
+                {
+                    rsrc.y1 += rc.y2 - 1;
+                    rdst.y1 += rc.y2 - 1;
+                    incy = -1;
+                }
+                while(rc.y2 > 0)
+                {
+                    m_ren->copy_from(src, 
+                                     rdst.x1, rdst.y1,
+                                     rsrc.x1, rsrc.y1,
+                                     rc.x2);
+                    rdst.y1 += incy;
+                    rsrc.y1 += incy;
+                    --rc.y2;
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        template<class SrcPixelFormatRenderer>
+        void blend_from(const SrcPixelFormatRenderer& src, 
+                        const rect_i* rect_src_ptr = 0, 
+                        int dx = 0, 
+                        int dy = 0,
+                        cover_type cover = agg::cover_full)
+        {
+            rect_i rsrc(0, 0, src.width(), src.height());
+            if(rect_src_ptr)
+            {
+                rsrc.x1 = rect_src_ptr->x1; 
+                rsrc.y1 = rect_src_ptr->y1;
+                rsrc.x2 = rect_src_ptr->x2 + 1;
+                rsrc.y2 = rect_src_ptr->y2 + 1;
+            }
+
+            // Version with xdst, ydst (absolute positioning)
+            //rect_i rdst(xdst, ydst, xdst + rsrc.x2 - rsrc.x1, ydst + rsrc.y2 - rsrc.y1);
+
+            // Version with dx, dy (relative positioning)
+            rect_i rdst(rsrc.x1 + dx, rsrc.y1 + dy, rsrc.x2 + dx, rsrc.y2 + dy);
+            rect_i rc = clip_rect_area(rdst, rsrc, src.width(), src.height());
+
+            if(rc.x2 > 0)
+            {
+                int incy = 1;
+                if(rdst.y1 > rsrc.y1)
+                {
+                    rsrc.y1 += rc.y2 - 1;
+                    rdst.y1 += rc.y2 - 1;
+                    incy = -1;
+                }
+                while(rc.y2 > 0)
+                {
+                    typename SrcPixelFormatRenderer::row_data rw = src.row(rsrc.y1);
+                    if(rw.ptr)
+                    {
+                        int x1src = rsrc.x1;
+                        int x1dst = rdst.x1;
+                        int len   = rc.x2;
+                        if(rw.x1 > x1src)
+                        {
+                            x1dst += rw.x1 - x1src;
+                            len   -= rw.x1 - x1src;
+                            x1src  = rw.x1;
+                        }
+                        if(len > 0)
+                        {
+                            if(x1src + len-1 > rw.x2)
+                            {
+                                len -= x1src + len - rw.x2 - 1;
+                            }
+                            if(len > 0)
+                            {
+                                m_ren->blend_from(src,
+                                                  x1dst, rdst.y1,
+                                                  x1src, rsrc.y1,
+                                                  len,
+                                                  cover);
+                            }
+                        }
+                    }
+                    rdst.y1 += incy;
+                    rsrc.y1 += incy;
+                    --rc.y2;
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        template<class SrcPixelFormatRenderer>
+        void blend_from_color(const SrcPixelFormatRenderer& src, 
+                              const color_type& color,
+                              const rect_i* rect_src_ptr = 0, 
+                              int dx = 0, 
+                              int dy = 0,
+                              cover_type cover = agg::cover_full)
+        {
+            rect_i rsrc(0, 0, src.width(), src.height());
+            if(rect_src_ptr)
+            {
+                rsrc.x1 = rect_src_ptr->x1; 
+                rsrc.y1 = rect_src_ptr->y1;
+                rsrc.x2 = rect_src_ptr->x2 + 1;
+                rsrc.y2 = rect_src_ptr->y2 + 1;
+            }
+
+            // Version with xdst, ydst (absolute positioning)
+            //rect_i rdst(xdst, ydst, xdst + rsrc.x2 - rsrc.x1, ydst + rsrc.y2 - rsrc.y1);
+
+            // Version with dx, dy (relative positioning)
+            rect_i rdst(rsrc.x1 + dx, rsrc.y1 + dy, rsrc.x2 + dx, rsrc.y2 + dy);
+            rect_i rc = clip_rect_area(rdst, rsrc, src.width(), src.height());
+
+            if(rc.x2 > 0)
+            {
+                int incy = 1;
+                if(rdst.y1 > rsrc.y1)
+                {
+                    rsrc.y1 += rc.y2 - 1;
+                    rdst.y1 += rc.y2 - 1;
+                    incy = -1;
+                }
+                while(rc.y2 > 0)
+                {
+                    typename SrcPixelFormatRenderer::row_data rw = src.row(rsrc.y1);
+                    if(rw.ptr)
+                    {
+                        int x1src = rsrc.x1;
+                        int x1dst = rdst.x1;
+                        int len   = rc.x2;
+                        if(rw.x1 > x1src)
+                        {
+                            x1dst += rw.x1 - x1src;
+                            len   -= rw.x1 - x1src;
+                            x1src  = rw.x1;
+                        }
+                        if(len > 0)
+                        {
+                            if(x1src + len-1 > rw.x2)
+                            {
+                                len -= x1src + len - rw.x2 - 1;
+                            }
+                            if(len > 0)
+                            {
+                                m_ren->blend_from_color(src,
+                                                        color,
+                                                        x1dst, rdst.y1,
+                                                        x1src, rsrc.y1,
+                                                        len,
+                                                        cover);
+                            }
+                        }
+                    }
+                    rdst.y1 += incy;
+                    rsrc.y1 += incy;
+                    --rc.y2;
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------
+        template<class SrcPixelFormatRenderer>
+        void blend_from_lut(const SrcPixelFormatRenderer& src, 
+                            const color_type* color_lut,
+                            const rect_i* rect_src_ptr = 0, 
+                            int dx = 0, 
+                            int dy = 0,
+                            cover_type cover = agg::cover_full)
+        {
+            rect_i rsrc(0, 0, src.width(), src.height());
+            if(rect_src_ptr)
+            {
+                rsrc.x1 = rect_src_ptr->x1; 
+                rsrc.y1 = rect_src_ptr->y1;
+                rsrc.x2 = rect_src_ptr->x2 + 1;
+                rsrc.y2 = rect_src_ptr->y2 + 1;
+            }
+
+            // Version with xdst, ydst (absolute positioning)
+            //rect_i rdst(xdst, ydst, xdst + rsrc.x2 - rsrc.x1, ydst + rsrc.y2 - rsrc.y1);
+
+            // Version with dx, dy (relative positioning)
+            rect_i rdst(rsrc.x1 + dx, rsrc.y1 + dy, rsrc.x2 + dx, rsrc.y2 + dy);
+            rect_i rc = clip_rect_area(rdst, rsrc, src.width(), src.height());
+
+            if(rc.x2 > 0)
+            {
+                int incy = 1;
+                if(rdst.y1 > rsrc.y1)
+                {
+                    rsrc.y1 += rc.y2 - 1;
+                    rdst.y1 += rc.y2 - 1;
+                    incy = -1;
+                }
+                while(rc.y2 > 0)
+                {
+                    typename SrcPixelFormatRenderer::row_data rw = src.row(rsrc.y1);
+                    if(rw.ptr)
+                    {
+                        int x1src = rsrc.x1;
+                        int x1dst = rdst.x1;
+                        int len   = rc.x2;
+                        if(rw.x1 > x1src)
+                        {
+                            x1dst += rw.x1 - x1src;
+                            len   -= rw.x1 - x1src;
+                            x1src  = rw.x1;
+                        }
+                        if(len > 0)
+                        {
+                            if(x1src + len-1 > rw.x2)
+                            {
+                                len -= x1src + len - rw.x2 - 1;
+                            }
+                            if(len > 0)
+                            {
+                                m_ren->blend_from_lut(src,
+                                                      color_lut,
+                                                      x1dst, rdst.y1,
+                                                      x1src, rsrc.y1,
+                                                      len,
+                                                      cover);
+                            }
+                        }
+                    }
+                    rdst.y1 += incy;
+                    rsrc.y1 += incy;
+                    --rc.y2;
+                }
+            }
+        }
+
+    private:
+        pixfmt_type* m_ren;
+        rect_i       m_clip_box;
+    };
+
+
+}
+
+#endif

deps_src/agg/agg_renderer_scanline.h

@@ -0,0 +1,854 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+
+#ifndef AGG_RENDERER_SCANLINE_INCLUDED
+#define AGG_RENDERER_SCANLINE_INCLUDED
+
+#include <limits>
+#include <cstdlib>
+#include "agg_basics.h"
+#include "agg_renderer_base.h"
+
+namespace agg
+{
+
+    //================================================render_scanline_aa_solid
+    template<class Scanline, class BaseRenderer, class ColorT> 
+    void render_scanline_aa_solid(const Scanline& sl, 
+                                  BaseRenderer& ren, 
+                                  const ColorT& color)
+    {
+        int y = sl.y();
+        unsigned num_spans = sl.num_spans();
+        typename Scanline::const_iterator span = sl.begin();
+
+        for(;;)
+        {
+            int x = span->x;
+            if(span->len > 0)
+            {
+                ren.blend_solid_hspan(x, y, (unsigned)span->len, 
+                                      color, 
+                                      span->covers);
+            }
+            else
+            {
+                ren.blend_hline(x, y, (unsigned)(x - span->len - 1), 
+                                color, 
+                                *(span->covers));
+            }
+            if(--num_spans == 0) break;
+            ++span;
+        }
+    }
+
+    //===============================================render_scanlines_aa_solid
+    template<class Rasterizer, class Scanline, 
+             class BaseRenderer, class ColorT>
+    void render_scanlines_aa_solid(Rasterizer& ras, Scanline& sl, 
+                                   BaseRenderer& ren, const ColorT& color)
+    {
+        if(ras.rewind_scanlines())
+        {
+            // Explicitly convert "color" to the BaseRenderer color type.
+            // For example, it can be called with color type "rgba", while
+            // "rgba8" is needed. Otherwise it will be implicitly 
+            // converted in the loop many times.
+            //----------------------
+            typename BaseRenderer::color_type ren_color = color;
+
+            sl.reset(ras.min_x(), ras.max_x());
+            while(ras.sweep_scanline(sl))
+            {
+                //render_scanline_aa_solid(sl, ren, ren_color);
+
+                // This code is equivalent to the above call (copy/paste). 
+                // It's just a "manual" optimization for old compilers,
+                // like Microsoft Visual C++ v6.0
+                //-------------------------------
+                int y = sl.y();
+                unsigned num_spans = sl.num_spans();
+                typename Scanline::const_iterator span = sl.begin();
+
+                for(;;)
+                {
+                    int x = span->x;
+                    if(span->len > 0)
+                    {
+                        ren.blend_solid_hspan(x, y, (unsigned)span->len, 
+                                              ren_color, 
+                                              span->covers);
+                    }
+                    else
+                    {
+                        ren.blend_hline(x, y, (unsigned)(x - span->len - 1), 
+                                        ren_color, 
+                                        *(span->covers));
+                    }
+                    if(--num_spans == 0) break;
+                    ++span;
+                }
+            }
+        }
+    }
+
+    //==============================================renderer_scanline_aa_solid
+    template<class BaseRenderer> class renderer_scanline_aa_solid
+    {
+    public:
+        typedef BaseRenderer base_ren_type;
+        typedef typename base_ren_type::color_type color_type;
+
+        //--------------------------------------------------------------------
+        renderer_scanline_aa_solid() : m_ren(0) {}
+        explicit renderer_scanline_aa_solid(base_ren_type& ren) : m_ren(&ren) {}
+        void attach(base_ren_type& ren)
+        {
+            m_ren = &ren;
+        }
+        
+        //--------------------------------------------------------------------
+        void color(const color_type& c) { m_color = c; }
+        const color_type& color() const { return m_color; }
+
+        //--------------------------------------------------------------------
+        void prepare() {}
+
+        //--------------------------------------------------------------------
+        template<class Scanline> void render(const Scanline& sl)
+        {
+            render_scanline_aa_solid(sl, *m_ren, m_color);
+        }
+        
+    private:
+        base_ren_type* m_ren;
+        color_type m_color;
+    };
+
+
+
+
+
+
+
+
+
+
+
+
+
+    //======================================================render_scanline_aa
+    template<class Scanline, class BaseRenderer, 
+             class SpanAllocator, class SpanGenerator> 
+    void render_scanline_aa(const Scanline& sl, BaseRenderer& ren, 
+                            SpanAllocator& alloc, SpanGenerator& span_gen)
+    {
+        int y = sl.y();
+
+        unsigned num_spans = sl.num_spans();
+        typename Scanline::const_iterator span = sl.begin();
+        for(;;)
+        {
+            int x = span->x;
+            int len = span->len;
+            const typename Scanline::cover_type* covers = span->covers;
+
+            if(len < 0) len = -len;
+            typename BaseRenderer::color_type* colors = alloc.allocate(len);
+            span_gen.generate(colors, x, y, len);
+            ren.blend_color_hspan(x, y, len, colors, 
+                                  (span->len < 0) ? 0 : covers, *covers);
+
+            if(--num_spans == 0) break;
+            ++span;
+        }
+    }
+
+    //=====================================================render_scanlines_aa
+    template<class Rasterizer, class Scanline, class BaseRenderer, 
+             class SpanAllocator, class SpanGenerator>
+    void render_scanlines_aa(Rasterizer& ras, Scanline& sl, BaseRenderer& ren, 
+                             SpanAllocator& alloc, SpanGenerator& span_gen)
+    {
+        if(ras.rewind_scanlines())
+        {
+            sl.reset(ras.min_x(), ras.max_x());
+            span_gen.prepare();
+            while(ras.sweep_scanline(sl))
+            {
+                render_scanline_aa(sl, ren, alloc, span_gen);
+            }
+        }
+    }
+
+    //====================================================renderer_scanline_aa
+    template<class BaseRenderer, class SpanAllocator, class SpanGenerator> 
+    class renderer_scanline_aa
+    {
+    public:
+        typedef BaseRenderer  base_ren_type;
+        typedef SpanAllocator alloc_type;
+        typedef SpanGenerator span_gen_type;
+
+        //--------------------------------------------------------------------
+        renderer_scanline_aa() : m_ren(0), m_alloc(0), m_span_gen(0) {}
+        renderer_scanline_aa(base_ren_type& ren, 
+                             alloc_type& alloc, 
+                             span_gen_type& span_gen) :
+            m_ren(&ren),
+            m_alloc(&alloc),
+            m_span_gen(&span_gen)
+        {}
+        void attach(base_ren_type& ren, 
+                    alloc_type& alloc, 
+                    span_gen_type& span_gen)
+        {
+            m_ren = &ren;
+            m_alloc = &alloc;
+            m_span_gen = &span_gen;
+        }
+        
+        //--------------------------------------------------------------------
+        void prepare() { m_span_gen->prepare(); }
+
+        //--------------------------------------------------------------------
+        template<class Scanline> void render(const Scanline& sl)
+        {
+            render_scanline_aa(sl, *m_ren, *m_alloc, *m_span_gen);
+        }
+
+    private:
+        base_ren_type* m_ren;
+        alloc_type*    m_alloc;
+        span_gen_type* m_span_gen;
+    };
+
+
+
+
+
+
+    //===============================================render_scanline_bin_solid
+    template<class Scanline, class BaseRenderer, class ColorT> 
+    void render_scanline_bin_solid(const Scanline& sl, 
+                                   BaseRenderer& ren, 
+                                   const ColorT& color)
+    {
+        unsigned num_spans = sl.num_spans();
+        typename Scanline::const_iterator span = sl.begin();
+        for(;;)
+        {
+            ren.blend_hline(span->x, 
+                            sl.y(), 
+                            span->x - 1 + ((span->len < 0) ? 
+                                              -span->len : 
+                                               span->len), 
+                               color, 
+                               cover_full);
+            if(--num_spans == 0) break;
+            ++span;
+        }
+    }
+
+    //==============================================render_scanlines_bin_solid
+    template<class Rasterizer, class Scanline, 
+             class BaseRenderer, class ColorT>
+    void render_scanlines_bin_solid(Rasterizer& ras, Scanline& sl, 
+                                    BaseRenderer& ren, const ColorT& color)
+    {
+        if(ras.rewind_scanlines())
+        {
+            // Explicitly convert "color" to the BaseRenderer color type.
+            // For example, it can be called with color type "rgba", while
+            // "rgba8" is needed. Otherwise it will be implicitly 
+            // converted in the loop many times.
+            //----------------------
+            typename BaseRenderer::color_type ren_color(color);
+
+            sl.reset(ras.min_x(), ras.max_x());
+            while(ras.sweep_scanline(sl))
+            {
+                //render_scanline_bin_solid(sl, ren, ren_color);
+
+                // This code is equivalent to the above call (copy/paste). 
+                // It's just a "manual" optimization for old compilers,
+                // like Microsoft Visual C++ v6.0
+                //-------------------------------
+                unsigned num_spans = sl.num_spans();
+                typename Scanline::const_iterator span = sl.begin();
+                for(;;)
+                {
+                    ren.blend_hline(span->x, 
+                                    sl.y(), 
+                                    span->x - 1 + ((span->len < 0) ? 
+                                                      -span->len : 
+                                                       span->len), 
+                                       ren_color, 
+                                       cover_full);
+                    if(--num_spans == 0) break;
+                    ++span;
+                }
+            }
+        }
+    }
+
+    //=============================================renderer_scanline_bin_solid
+    template<class BaseRenderer> class renderer_scanline_bin_solid
+    {
+    public:
+        typedef BaseRenderer base_ren_type;
+        typedef typename base_ren_type::color_type color_type;
+
+        //--------------------------------------------------------------------
+        renderer_scanline_bin_solid() : m_ren(0) {}
+        explicit renderer_scanline_bin_solid(base_ren_type& ren) : m_ren(&ren) {}
+        void attach(base_ren_type& ren)
+        {
+            m_ren = &ren;
+        }
+        
+        //--------------------------------------------------------------------
+        void color(const color_type& c) { m_color = c; }
+        const color_type& color() const { return m_color; }
+
+        //--------------------------------------------------------------------
+        void prepare() {}
+
+        //--------------------------------------------------------------------
+        template<class Scanline> void render(const Scanline& sl)
+        {
+            render_scanline_bin_solid(sl, *m_ren, m_color);
+        }
+        
+    private:
+        base_ren_type* m_ren;
+        color_type m_color;
+    };
+
+
+
+
+
+
+
+
+    //======================================================render_scanline_bin
+    template<class Scanline, class BaseRenderer, 
+             class SpanAllocator, class SpanGenerator> 
+    void render_scanline_bin(const Scanline& sl, BaseRenderer& ren, 
+                             SpanAllocator& alloc, SpanGenerator& span_gen)
+    {
+        int y = sl.y();
+
+        unsigned num_spans = sl.num_spans();
+        typename Scanline::const_iterator span = sl.begin();
+        for(;;)
+        {
+            int x = span->x;
+            int len = span->len;
+            if(len < 0) len = -len;
+            typename BaseRenderer::color_type* colors = alloc.allocate(len);
+            span_gen.generate(colors, x, y, len);
+            ren.blend_color_hspan(x, y, len, colors, 0, cover_full); 
+            if(--num_spans == 0) break;
+            ++span;
+        }
+    }
+
+    //=====================================================render_scanlines_bin
+    template<class Rasterizer, class Scanline, class BaseRenderer, 
+             class SpanAllocator, class SpanGenerator>
+    void render_scanlines_bin(Rasterizer& ras, Scanline& sl, BaseRenderer& ren, 
+                              SpanAllocator& alloc, SpanGenerator& span_gen)
+    {
+        if(ras.rewind_scanlines())
+        {
+            sl.reset(ras.min_x(), ras.max_x());
+            span_gen.prepare();
+            while(ras.sweep_scanline(sl))
+            {
+                render_scanline_bin(sl, ren, alloc, span_gen);
+            }
+        }
+    }
+
+    //====================================================renderer_scanline_bin
+    template<class BaseRenderer, class SpanAllocator, class SpanGenerator> 
+    class renderer_scanline_bin
+    {
+    public:
+        typedef BaseRenderer  base_ren_type;
+        typedef SpanAllocator alloc_type;
+        typedef SpanGenerator span_gen_type;
+
+        //--------------------------------------------------------------------
+        renderer_scanline_bin() : m_ren(0), m_alloc(0), m_span_gen(0) {}
+        renderer_scanline_bin(base_ren_type& ren, 
+                              alloc_type& alloc, 
+                              span_gen_type& span_gen) :
+            m_ren(&ren),
+            m_alloc(&alloc),
+            m_span_gen(&span_gen)
+        {}
+        void attach(base_ren_type& ren, 
+                    alloc_type& alloc, 
+                    span_gen_type& span_gen)
+        {
+            m_ren = &ren;
+            m_alloc = &alloc;
+            m_span_gen = &span_gen;
+        }
+        
+        //--------------------------------------------------------------------
+        void prepare() { m_span_gen->prepare(); }
+
+        //--------------------------------------------------------------------
+        template<class Scanline> void render(const Scanline& sl)
+        {
+            render_scanline_bin(sl, *m_ren, *m_alloc, *m_span_gen);
+        }
+
+    private:
+        base_ren_type* m_ren;
+        alloc_type*    m_alloc;
+        span_gen_type* m_span_gen;
+    };
+
+
+
+
+
+
+
+
+
+
+    //========================================================render_scanlines
+    template<class Rasterizer, class Scanline, class Renderer>
+    void render_scanlines(Rasterizer& ras, Scanline& sl, Renderer& ren)
+    {
+        if(ras.rewind_scanlines())
+        {
+            sl.reset(ras.min_x(), ras.max_x());
+            ren.prepare();
+            while(ras.sweep_scanline(sl))
+            {
+                ren.render(sl);
+            }
+        }
+    }
+
+    //========================================================render_all_paths
+    template<class Rasterizer, class Scanline, class Renderer, 
+             class VertexSource, class ColorStorage, class PathId>
+    void render_all_paths(Rasterizer& ras, 
+                          Scanline& sl,
+                          Renderer& r, 
+                          VertexSource& vs, 
+                          const ColorStorage& as, 
+                          const PathId& path_id,
+                          unsigned num_paths)
+    {
+        for(unsigned i = 0; i < num_paths; i++)
+        {
+            ras.reset();
+            ras.add_path(vs, path_id[i]);
+            r.color(as[i]);
+            render_scanlines(ras, sl, r);
+        }
+    }
+
+
+
+
+
+
+    //=============================================render_scanlines_compound
+    template<class Rasterizer, 
+             class ScanlineAA, 
+             class ScanlineBin, 
+             class BaseRenderer, 
+             class SpanAllocator,
+             class StyleHandler>
+    void render_scanlines_compound(Rasterizer& ras, 
+                                   ScanlineAA& sl_aa,
+                                   ScanlineBin& sl_bin,
+                                   BaseRenderer& ren,
+                                   SpanAllocator& alloc,
+                                   StyleHandler& sh)
+    {
+        if(ras.rewind_scanlines())
+        {
+            int min_x = ras.min_x();
+            int len = ras.max_x() - min_x + 2;
+            sl_aa.reset(min_x, ras.max_x());
+            sl_bin.reset(min_x, ras.max_x());
+
+            typedef typename BaseRenderer::color_type color_type;
+            color_type* color_span = alloc.allocate(len * 2);
+            color_type* mix_buffer = color_span + len;
+            unsigned num_spans;
+
+            unsigned num_styles;
+            unsigned style;
+            bool     solid;
+            while((num_styles = ras.sweep_styles()) > 0)
+            {
+                typename ScanlineAA::const_iterator span_aa;
+                if(num_styles == 1)
+                {
+                    // Optimization for a single style. Happens often
+                    //-------------------------
+                    if(ras.sweep_scanline(sl_aa, 0))
+                    {
+                        style = ras.style(0);
+                        if(sh.is_solid(style))
+                        {
+                            // Just solid fill
+                            //-----------------------
+                            render_scanline_aa_solid(sl_aa, ren, sh.color(style));
+                        }
+                        else
+                        {
+                            // Arbitrary span generator
+                            //-----------------------
+                            span_aa   = sl_aa.begin();
+                            num_spans = sl_aa.num_spans();
+                            for(;;)
+                            {
+                                len = span_aa->len;
+                                sh.generate_span(color_span, 
+                                                 span_aa->x, 
+                                                 sl_aa.y(), 
+                                                 len, 
+                                                 style);
+
+                                ren.blend_color_hspan(span_aa->x, 
+                                                      sl_aa.y(), 
+                                                      span_aa->len,
+                                                      color_span,
+                                                      span_aa->covers);
+                                if(--num_spans == 0) break;
+                                ++span_aa;
+                            }
+                        }
+                    }
+                }
+                else
+                {
+                    if(ras.sweep_scanline(sl_bin, -1))
+                    {
+                        // Clear the spans of the mix_buffer
+                        //--------------------
+                        typename ScanlineBin::const_iterator span_bin = sl_bin.begin();
+                        num_spans = sl_bin.num_spans();
+                        for(;;)
+                        {
+                            memset(mix_buffer + span_bin->x - min_x, 
+                                   0, 
+                                   span_bin->len * sizeof(color_type));
+
+                            if(--num_spans == 0) break;
+                            ++span_bin;
+                        }
+
+                        unsigned i;
+                        for(i = 0; i < num_styles; i++)
+                        {
+                            style = ras.style(i);
+                            solid = sh.is_solid(style);
+
+                            if(ras.sweep_scanline(sl_aa, i))
+                            {
+                                color_type* colors;
+                                color_type* cspan;
+                                typename ScanlineAA::cover_type* covers;
+                                span_aa   = sl_aa.begin();
+                                num_spans = sl_aa.num_spans();
+                                if(solid)
+                                {
+                                    // Just solid fill
+                                    //-----------------------
+                                    for(;;)
+                                    {
+                                        color_type c = sh.color(style);
+                                        len    = span_aa->len;
+                                        colors = mix_buffer + span_aa->x - min_x;
+                                        covers = span_aa->covers;
+                                        do
+                                        {
+                                            if(*covers == cover_full) 
+                                            {
+                                                *colors = c;
+                                            }
+                                            else
+                                            {
+                                                colors->add(c, *covers);
+                                            }
+                                            ++colors;
+                                            ++covers;
+                                        }
+                                        while(--len);
+                                        if(--num_spans == 0) break;
+                                        ++span_aa;
+                                    }
+                                }
+                                else
+                                {
+                                    // Arbitrary span generator
+                                    //-----------------------
+                                    for(;;)
+                                    {
+                                        len = span_aa->len;
+                                        colors = mix_buffer + span_aa->x - min_x;
+                                        cspan  = color_span;
+                                        sh.generate_span(cspan, 
+                                                         span_aa->x, 
+                                                         sl_aa.y(), 
+                                                         len, 
+                                                         style);
+                                        covers = span_aa->covers;
+                                        do
+                                        {
+                                            if(*covers == cover_full) 
+                                            {
+                                                *colors = *cspan;
+                                            }
+                                            else
+                                            {
+                                                colors->add(*cspan, *covers);
+                                            }
+                                            ++cspan;
+                                            ++colors;
+                                            ++covers;
+                                        }
+                                        while(--len);
+                                        if(--num_spans == 0) break;
+                                        ++span_aa;
+                                    }
+                                }
+                            }
+                        }
+
+                        // Emit the blended result as a color hspan
+                        //-------------------------
+                        span_bin = sl_bin.begin();
+                        num_spans = sl_bin.num_spans();
+                        for(;;)
+                        {
+                            ren.blend_color_hspan(span_bin->x, 
+                                                  sl_bin.y(), 
+                                                  span_bin->len,
+                                                  mix_buffer + span_bin->x - min_x,
+                                                  0,
+                                                  cover_full);
+                            if(--num_spans == 0) break;
+                            ++span_bin;
+                        }
+                    } // if(ras.sweep_scanline(sl_bin, -1))
+                } // if(num_styles == 1) ... else
+            } // while((num_styles = ras.sweep_styles()) > 0)
+        } // if(ras.rewind_scanlines())
+    }
+
+    //=======================================render_scanlines_compound_layered
+    template<class Rasterizer, 
+             class ScanlineAA, 
+             class BaseRenderer, 
+             class SpanAllocator,
+             class StyleHandler>
+    void render_scanlines_compound_layered(Rasterizer& ras, 
+                                           ScanlineAA& sl_aa,
+                                           BaseRenderer& ren,
+                                           SpanAllocator& alloc,
+                                           StyleHandler& sh)
+    {
+        if(ras.rewind_scanlines())
+        {
+            int min_x = ras.min_x();
+            int len = ras.max_x() - min_x + 2;
+            sl_aa.reset(min_x, ras.max_x());
+
+            typedef typename BaseRenderer::color_type color_type;
+            color_type* color_span   = alloc.allocate(len * 2);
+            color_type* mix_buffer   = color_span + len;
+            cover_type* cover_buffer = ras.allocate_cover_buffer(len);
+            unsigned num_spans;
+
+            unsigned num_styles;
+            unsigned style;
+            bool     solid;
+            while((num_styles = ras.sweep_styles()) > 0)
+            {
+                typename ScanlineAA::const_iterator span_aa;
+                if(num_styles == 1)
+                {
+                    // Optimization for a single style. Happens often
+                    //-------------------------
+                    if(ras.sweep_scanline(sl_aa, 0))
+                    {
+                        style = ras.style(0);
+                        if(sh.is_solid(style))
+                        {
+                            // Just solid fill
+                            //-----------------------
+                            render_scanline_aa_solid(sl_aa, ren, sh.color(style));
+                        }
+                        else
+                        {
+                            // Arbitrary span generator
+                            //-----------------------
+                            span_aa   = sl_aa.begin();
+                            num_spans = sl_aa.num_spans();
+                            for(;;)
+                            {
+                                len = span_aa->len;
+                                sh.generate_span(color_span, 
+                                                 span_aa->x, 
+                                                 sl_aa.y(), 
+                                                 len, 
+                                                 style);
+
+                                ren.blend_color_hspan(span_aa->x, 
+                                                      sl_aa.y(), 
+                                                      span_aa->len,
+                                                      color_span,
+                                                      span_aa->covers);
+                                if(--num_spans == 0) break;
+                                ++span_aa;
+                            }
+                        }
+                    }
+                }
+                else
+                {
+                    int      sl_start = ras.scanline_start();
+                    unsigned sl_len   = ras.scanline_length();
+
+                    if(sl_len)
+                    {
+                        memset(mix_buffer + sl_start - min_x, 
+                               0, 
+                               sl_len * sizeof(color_type));
+
+                        memset(cover_buffer + sl_start - min_x, 
+                               0, 
+                               sl_len * sizeof(cover_type));
+
+                        int sl_y = std::numeric_limits<int>::max();
+                        unsigned i;
+                        for(i = 0; i < num_styles; i++)
+                        {
+                            style = ras.style(i);
+                            solid = sh.is_solid(style);
+
+                            if(ras.sweep_scanline(sl_aa, i))
+                            {
+                                unsigned    cover;
+                                color_type* colors;
+                                color_type* cspan;
+                                cover_type* src_covers;
+                                cover_type* dst_covers;
+                                span_aa   = sl_aa.begin();
+                                num_spans = sl_aa.num_spans();
+                                sl_y      = sl_aa.y();
+                                if(solid)
+                                {
+                                    // Just solid fill
+                                    //-----------------------
+                                    for(;;)
+                                    {
+                                        color_type c = sh.color(style);
+                                        len    = span_aa->len;
+                                        colors = mix_buffer + span_aa->x - min_x;
+                                        src_covers = span_aa->covers;
+                                        dst_covers = cover_buffer + span_aa->x - min_x;
+                                        do
+                                        {
+                                            cover = *src_covers;
+                                            if(*dst_covers + cover > cover_full)
+                                            {
+                                                cover = cover_full - *dst_covers;
+                                            }
+                                            if(cover)
+                                            {
+                                                colors->add(c, cover);
+                                                *dst_covers += cover;
+                                            }
+                                            ++colors;
+                                            ++src_covers;
+                                            ++dst_covers;
+                                        }
+                                        while(--len);
+                                        if(--num_spans == 0) break;
+                                        ++span_aa;
+                                    }
+                                }
+                                else
+                                {
+                                    // Arbitrary span generator
+                                    //-----------------------
+                                    for(;;)
+                                    {
+                                        len = span_aa->len;
+                                        colors = mix_buffer + span_aa->x - min_x;
+                                        cspan  = color_span;
+                                        sh.generate_span(cspan, 
+                                                         span_aa->x, 
+                                                         sl_aa.y(), 
+                                                         len, 
+                                                         style);
+                                        src_covers = span_aa->covers;
+                                        dst_covers = cover_buffer + span_aa->x - min_x;
+                                        do
+                                        {
+                                            cover = *src_covers;
+                                            if(*dst_covers + cover > cover_full)
+                                            {
+                                                cover = cover_full - *dst_covers;
+                                            }
+                                            if(cover)
+                                            {
+                                                colors->add(*cspan, cover);
+                                                *dst_covers += cover;
+                                            }
+                                            ++cspan;
+                                            ++colors;
+                                            ++src_covers;
+                                            ++dst_covers;
+                                        }
+                                        while(--len);
+                                        if(--num_spans == 0) break;
+                                        ++span_aa;
+                                    }
+                                }
+                            }
+                        }
+                        ren.blend_color_hspan(sl_start, 
+                                              sl_y, 
+                                              sl_len,
+                                              mix_buffer + sl_start - min_x,
+                                              0,
+                                              cover_full);
+                    } //if(sl_len)
+                } //if(num_styles == 1) ... else
+            } //while((num_styles = ras.sweep_styles()) > 0)
+        } //if(ras.rewind_scanlines())
+    }
+
+
+}
+
+#endif

deps_src/agg/agg_rendering_buffer.h

@@ -0,0 +1,300 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// class rendering_buffer
+//
+//----------------------------------------------------------------------------
+
+#ifndef AGG_RENDERING_BUFFER_INCLUDED
+#define AGG_RENDERING_BUFFER_INCLUDED
+
+#include "agg_array.h"
+
+namespace agg
+{
+
+    //===========================================================row_accessor
+    template<class T> class row_accessor
+    {
+    public:
+        typedef const_row_info<T> row_data;
+
+        //-------------------------------------------------------------------
+        row_accessor() :
+            m_buf(0),
+            m_start(0),
+            m_width(0),
+            m_height(0),
+            m_stride(0)
+        {
+        }
+
+        //--------------------------------------------------------------------
+        row_accessor(T* buf, unsigned width, unsigned height, int stride) :
+            m_buf(0),
+            m_start(0),
+            m_width(0),
+            m_height(0),
+            m_stride(0)
+        {
+            attach(buf, width, height, stride);
+        }
+
+
+        //--------------------------------------------------------------------
+        void attach(T* buf, unsigned width, unsigned height, int stride)
+        {
+            m_buf = m_start = buf;
+            m_width = width;
+            m_height = height;
+            m_stride = stride;
+            if(stride < 0) 
+            { 
+                m_start = m_buf - int(height - 1) * stride;
+            }
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE       T* buf()          { return m_buf;    }
+        AGG_INLINE const T* buf()    const { return m_buf;    }
+        AGG_INLINE unsigned width()  const { return m_width;  }
+        AGG_INLINE unsigned height() const { return m_height; }
+        AGG_INLINE int      stride() const { return m_stride; }
+        AGG_INLINE unsigned stride_abs() const 
+        {
+            return (m_stride < 0) ? unsigned(-m_stride) : unsigned(m_stride); 
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE       T* row_ptr(int, int y, unsigned) 
+        { 
+            return m_start + y * m_stride; 
+        }
+        AGG_INLINE       T* row_ptr(int y)       { return m_start + y * m_stride; }
+        AGG_INLINE const T* row_ptr(int y) const { return m_start + y * m_stride; }
+        AGG_INLINE row_data row    (int y) const 
+        { 
+            return row_data(0, m_width-1, row_ptr(y)); 
+        }
+
+        //--------------------------------------------------------------------
+        template<class RenBuf>
+        void copy_from(const RenBuf& src)
+        {
+            unsigned h = height();
+            if(src.height() < h) h = src.height();
+        
+            unsigned l = stride_abs();
+            if(src.stride_abs() < l) l = src.stride_abs();
+        
+            l *= sizeof(T);
+
+            unsigned y;
+            unsigned w = width();
+            for (y = 0; y < h; y++)
+            {
+                memcpy(row_ptr(0, y, w), src.row_ptr(y), l);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        void clear(T value)
+        {
+            unsigned y;
+            unsigned w = width();
+            unsigned stride = stride_abs();
+            for(y = 0; y < height(); y++)
+            {
+                T* p = row_ptr(0, y, w);
+                unsigned x;
+                for(x = 0; x < stride; x++)
+                {
+                    *p++ = value;
+                }
+            }
+        }
+
+    private:
+        //--------------------------------------------------------------------
+        T*            m_buf;    // Pointer to renrdering buffer
+        T*            m_start;  // Pointer to first pixel depending on stride 
+        unsigned      m_width;  // Width in pixels
+        unsigned      m_height; // Height in pixels
+        int           m_stride; // Number of bytes per row. Can be < 0
+    };
+
+
+
+
+    //==========================================================row_ptr_cache
+    template<class T> class row_ptr_cache
+    {
+    public:
+        typedef const_row_info<T> row_data;
+
+        //-------------------------------------------------------------------
+        row_ptr_cache() :
+            m_buf(0),
+            m_rows(),
+            m_width(0),
+            m_height(0),
+            m_stride(0)
+        {
+        }
+
+        //--------------------------------------------------------------------
+        row_ptr_cache(T* buf, unsigned width, unsigned height, int stride) :
+            m_buf(0),
+            m_rows(),
+            m_width(0),
+            m_height(0),
+            m_stride(0)
+        {
+            attach(buf, width, height, stride);
+        }
+
+        //--------------------------------------------------------------------
+        void attach(T* buf, unsigned width, unsigned height, int stride)
+        {
+            m_buf = buf;
+            m_width = width;
+            m_height = height;
+            m_stride = stride;
+            if(height > m_rows.size())
+            {
+                m_rows.resize(height);
+            }
+
+            T* row_ptr = m_buf;
+
+            if(stride < 0)
+            {
+                row_ptr = m_buf - int(height - 1) * stride;
+            }
+
+            T** rows = &m_rows[0];
+
+            while(height--)
+            {
+                *rows++ = row_ptr;
+                row_ptr += stride;
+            }
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE       T* buf()          { return m_buf;    }
+        AGG_INLINE const T* buf()    const { return m_buf;    }
+        AGG_INLINE unsigned width()  const { return m_width;  }
+        AGG_INLINE unsigned height() const { return m_height; }
+        AGG_INLINE int      stride() const { return m_stride; }
+        AGG_INLINE unsigned stride_abs() const 
+        {
+            return (m_stride < 0) ? unsigned(-m_stride) : unsigned(m_stride); 
+        }
+
+        //--------------------------------------------------------------------
+        AGG_INLINE       T* row_ptr(int, int y, unsigned) 
+        { 
+            return m_rows[y]; 
+        }
+        AGG_INLINE       T* row_ptr(int y)       { return m_rows[y]; }
+        AGG_INLINE const T* row_ptr(int y) const { return m_rows[y]; }
+        AGG_INLINE row_data row    (int y) const 
+        { 
+            return row_data(0, m_width-1, m_rows[y]); 
+        }
+
+        //--------------------------------------------------------------------
+        T const* const* rows() const { return &m_rows[0]; }
+
+        //--------------------------------------------------------------------
+        template<class RenBuf>
+        void copy_from(const RenBuf& src)
+        {
+            unsigned h = height();
+            if(src.height() < h) h = src.height();
+        
+            unsigned l = stride_abs();
+            if(src.stride_abs() < l) l = src.stride_abs();
+        
+            l *= sizeof(T);
+
+            unsigned y;
+            unsigned w = width();
+            for (y = 0; y < h; y++)
+            {
+                memcpy(row_ptr(0, y, w), src.row_ptr(y), l);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        void clear(T value)
+        {
+            unsigned y;
+            unsigned w = width();
+            unsigned stride = stride_abs();
+            for(y = 0; y < height(); y++)
+            {
+                T* p = row_ptr(0, y, w);
+                unsigned x;
+                for(x = 0; x < stride; x++)
+                {
+                    *p++ = value;
+                }
+            }
+        }
+
+    private:
+        //--------------------------------------------------------------------
+        T*            m_buf;        // Pointer to renrdering buffer
+        pod_array<T*> m_rows;       // Pointers to each row of the buffer
+        unsigned      m_width;      // Width in pixels
+        unsigned      m_height;     // Height in pixels
+        int           m_stride;     // Number of bytes per row. Can be < 0
+    };
+
+
+
+
+    //========================================================rendering_buffer
+    // 
+    // The definition of the main type for accessing the rows in the frame 
+    // buffer. It provides functionality to navigate to the rows in a 
+    // rectangular matrix, from top to bottom or from bottom to top depending 
+    // on stride.
+    //
+    // row_accessor is cheap to create/destroy, but performs one multiplication
+    // when calling row_ptr().
+    // 
+    // row_ptr_cache creates an array of pointers to rows, so, the access 
+    // via row_ptr() may be faster. But it requires memory allocation 
+    // when creating. For example, on typical Intel Pentium hardware 
+    // row_ptr_cache speeds span_image_filter_rgb_nn up to 10%
+    //
+    // It's used only in short hand typedefs like pixfmt_rgba32 and can be 
+    // redefined in agg_config.h
+    // In real applications you can use both, depending on your needs
+    //------------------------------------------------------------------------
+#ifdef AGG_RENDERING_BUFFER
+    typedef AGG_RENDERING_BUFFER rendering_buffer;
+#else
+//  typedef row_ptr_cache<int8u> rendering_buffer;
+    typedef row_accessor<int8u> rendering_buffer;
+#endif
+
+}
+
+
+#endif

deps_src/agg/agg_scanline_p.h

@@ -0,0 +1,329 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Class scanline_p - a general purpose scanline container with packed spans.
+//
+//----------------------------------------------------------------------------
+//
+// Adaptation for 32-bit screen coordinates (scanline32_p) has been sponsored by 
+// Liberty Technology Systems, Inc., visit http://lib-sys.com
+//
+// Liberty Technology Systems, Inc. is the provider of
+// PostScript and PDF technology for software developers.
+// 
+//----------------------------------------------------------------------------
+#ifndef AGG_SCANLINE_P_INCLUDED
+#define AGG_SCANLINE_P_INCLUDED
+
+#include "agg_array.h"
+
+namespace agg
+{
+
+    //=============================================================scanline_p8
+    // 
+    // This is a general purpose scaline container which supports the interface 
+    // used in the rasterizer::render(). See description of scanline_u8
+    // for details.
+    // 
+    //------------------------------------------------------------------------
+    class scanline_p8
+    {
+    public:
+        typedef scanline_p8 self_type;
+        typedef int8u       cover_type;
+        typedef int16       coord_type;
+
+        //--------------------------------------------------------------------
+        struct span
+        {
+            coord_type        x;
+            coord_type        len; // If negative, it's a solid span, covers is valid
+            const cover_type* covers;
+        };
+
+        typedef span* iterator;
+        typedef const span* const_iterator;
+
+        scanline_p8() :
+            m_last_x(0x7FFFFFF0),
+            m_covers(),
+            m_cover_ptr(0),
+            m_spans(),
+            m_cur_span(0)
+        {
+        }
+
+        //--------------------------------------------------------------------
+        void reset(int min_x, int max_x)
+        {
+            unsigned max_len = max_x - min_x + 3;
+            if(max_len > m_spans.size())
+            {
+                m_spans.resize(max_len);
+                m_covers.resize(max_len);
+            }
+            m_last_x    = 0x7FFFFFF0;
+            m_cover_ptr = &m_covers[0];
+            m_cur_span  = &m_spans[0];
+            m_cur_span->len = 0;
+        }
+
+        //--------------------------------------------------------------------
+        void add_cell(int x, unsigned cover)
+        {
+            *m_cover_ptr = (cover_type)cover;
+            if(x == m_last_x+1 && m_cur_span->len > 0)
+            {
+                m_cur_span->len++;
+            }
+            else
+            {
+                m_cur_span++;
+                m_cur_span->covers = m_cover_ptr;
+                m_cur_span->x = (int16)x;
+                m_cur_span->len = 1;
+            }
+            m_last_x = x;
+            m_cover_ptr++;
+        }
+
+        //--------------------------------------------------------------------
+        void add_cells(int x, unsigned len, const cover_type* covers)
+        {
+            memcpy(m_cover_ptr, covers, len * sizeof(cover_type));
+            if(x == m_last_x+1 && m_cur_span->len > 0)
+            {
+                m_cur_span->len += (int16)len;
+            }
+            else
+            {
+                m_cur_span++;
+                m_cur_span->covers = m_cover_ptr;
+                m_cur_span->x = (int16)x;
+                m_cur_span->len = (int16)len;
+            }
+            m_cover_ptr += len;
+            m_last_x = x + len - 1;
+        }
+
+        //--------------------------------------------------------------------
+        void add_span(int x, unsigned len, unsigned cover)
+        {
+            if(x == m_last_x+1 && 
+               m_cur_span->len < 0 && 
+               cover == *m_cur_span->covers)
+            {
+                m_cur_span->len -= (int16)len;
+            }
+            else
+            {
+                *m_cover_ptr = (cover_type)cover;
+                m_cur_span++;
+                m_cur_span->covers = m_cover_ptr++;
+                m_cur_span->x      = (int16)x;
+                m_cur_span->len    = (int16)(-int(len));
+            }
+            m_last_x = x + len - 1;
+        }
+
+        //--------------------------------------------------------------------
+        void finalize(int y) 
+        { 
+            m_y = y; 
+        }
+
+        //--------------------------------------------------------------------
+        void reset_spans()
+        {
+            m_last_x    = 0x7FFFFFF0;
+            m_cover_ptr = &m_covers[0];
+            m_cur_span  = &m_spans[0];
+            m_cur_span->len = 0;
+        }
+
+        //--------------------------------------------------------------------
+        int            y()         const { return m_y; }
+        unsigned       num_spans() const { return unsigned(m_cur_span - &m_spans[0]); }
+        const_iterator begin()     const { return &m_spans[1]; }
+
+    private:
+        scanline_p8(const self_type&);
+        const self_type& operator = (const self_type&);
+
+        int                   m_last_x;
+        int                   m_y;
+        pod_array<cover_type> m_covers;
+        cover_type*           m_cover_ptr;
+        pod_array<span>       m_spans;
+        span*                 m_cur_span;
+    };
+
+
+
+
+
+
+
+
+    //==========================================================scanline32_p8
+    class scanline32_p8
+    {
+    public:
+        typedef scanline32_p8 self_type;
+        typedef int8u         cover_type;
+        typedef int32         coord_type;
+
+        struct span
+        {
+            span() {}
+            span(coord_type x_, coord_type len_, const cover_type* covers_) :
+                x(x_), len(len_), covers(covers_) {}
+
+            coord_type x;
+            coord_type len; // If negative, it's a solid span, covers is valid
+            const cover_type* covers;
+        };
+        typedef pod_bvector<span, 4> span_array_type;
+
+
+        //--------------------------------------------------------------------
+        class const_iterator
+        {
+        public:
+            const_iterator(const span_array_type& spans) :
+                m_spans(spans),
+                m_span_idx(0)
+            {}
+
+            const span& operator*()  const { return m_spans[m_span_idx];  }
+            const span* operator->() const { return &m_spans[m_span_idx]; }
+
+            void operator ++ () { ++m_span_idx; }
+
+        private:
+            const span_array_type& m_spans;
+            unsigned               m_span_idx;
+        };
+
+        //--------------------------------------------------------------------
+        scanline32_p8() :
+            m_max_len(0),
+            m_last_x(0x7FFFFFF0),
+            m_covers(),
+            m_cover_ptr(0)
+        {
+        }
+
+        //--------------------------------------------------------------------
+        void reset(int min_x, int max_x)
+        {
+            unsigned max_len = max_x - min_x + 3;
+            if(max_len > m_covers.size())
+            {
+                m_covers.resize(max_len);
+            }
+            m_last_x    = 0x7FFFFFF0;
+            m_cover_ptr = &m_covers[0];
+            m_spans.remove_all();
+        }
+
+        //--------------------------------------------------------------------
+        void add_cell(int x, unsigned cover)
+        {
+            *m_cover_ptr = cover_type(cover);
+            if(x == m_last_x+1 && m_spans.size() && m_spans.last().len > 0)
+            {
+                m_spans.last().len++;
+            }
+            else
+            {
+                m_spans.add(span(coord_type(x), 1, m_cover_ptr));
+            }
+            m_last_x = x;
+            m_cover_ptr++;
+        }
+
+        //--------------------------------------------------------------------
+        void add_cells(int x, unsigned len, const cover_type* covers)
+        {
+            memcpy(m_cover_ptr, covers, len * sizeof(cover_type));
+            if(x == m_last_x+1 && m_spans.size() && m_spans.last().len > 0)
+            {
+                m_spans.last().len += coord_type(len);
+            }
+            else
+            {
+                m_spans.add(span(coord_type(x), coord_type(len), m_cover_ptr));
+            }
+            m_cover_ptr += len;
+            m_last_x = x + len - 1;
+        }
+
+        //--------------------------------------------------------------------
+        void add_span(int x, unsigned len, unsigned cover)
+        {
+            if(x == m_last_x+1 && 
+               m_spans.size() &&
+               m_spans.last().len < 0 && 
+               cover == *m_spans.last().covers)
+            {
+                m_spans.last().len -= coord_type(len);
+            }
+            else
+            {
+                *m_cover_ptr = cover_type(cover);
+                m_spans.add(span(coord_type(x), -coord_type(len), m_cover_ptr++));
+            }
+            m_last_x = x + len - 1;
+        }
+
+        //--------------------------------------------------------------------
+        void finalize(int y) 
+        { 
+            m_y = y; 
+        }
+
+        //--------------------------------------------------------------------
+        void reset_spans()
+        {
+            m_last_x    = 0x7FFFFFF0;
+            m_cover_ptr = &m_covers[0];
+            m_spans.remove_all();
+        }
+
+        //--------------------------------------------------------------------
+        int            y()         const { return m_y; }
+        unsigned       num_spans() const { return m_spans.size(); }
+        const_iterator begin()     const { return const_iterator(m_spans); }
+
+    private:
+        scanline32_p8(const self_type&);
+        const self_type& operator = (const self_type&);
+
+        unsigned              m_max_len;
+        int                   m_last_x;
+        int                   m_y;
+        pod_array<cover_type> m_covers;
+        cover_type*           m_cover_ptr;
+        span_array_type       m_spans;
+    };
+
+
+}
+
+
+#endif
+

deps_src/agg/agg_trans_affine.h

@@ -0,0 +1,518 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Affine transformation classes.
+//
+//----------------------------------------------------------------------------
+#ifndef AGG_TRANS_AFFINE_INCLUDED
+#define AGG_TRANS_AFFINE_INCLUDED
+
+#include <math.h>
+#include "agg_basics.h"
+
+namespace agg
+{
+    const double affine_epsilon = 1e-14; 
+
+    //============================================================trans_affine
+    //
+    // See Implementation agg_trans_affine.cpp
+    //
+    // Affine transformation are linear transformations in Cartesian coordinates
+    // (strictly speaking not only in Cartesian, but for the beginning we will 
+    // think so). They are rotation, scaling, translation and skewing.  
+    // After any affine transformation a line segment remains a line segment 
+    // and it will never become a curve. 
+    //
+    // There will be no math about matrix calculations, since it has been 
+    // described many times. Ask yourself a very simple question:
+    // "why do we need to understand and use some matrix stuff instead of just 
+    // rotating, scaling and so on". The answers are:
+    //
+    // 1. Any combination of transformations can be done by only 4 multiplications
+    //    and 4 additions in floating point.
+    // 2. One matrix transformation is equivalent to the number of consecutive
+    //    discrete transformations, i.e. the matrix "accumulates" all transformations 
+    //    in the order of their settings. Suppose we have 4 transformations: 
+    //       * rotate by 30 degrees,
+    //       * scale X to 2.0, 
+    //       * scale Y to 1.5, 
+    //       * move to (100, 100). 
+    //    The result will depend on the order of these transformations, 
+    //    and the advantage of matrix is that the sequence of discret calls:
+    //    rotate(30), scaleX(2.0), scaleY(1.5), move(100,100) 
+    //    will have exactly the same result as the following matrix transformations:
+    //   
+    //    affine_matrix m;
+    //    m *= rotate_matrix(30); 
+    //    m *= scaleX_matrix(2.0);
+    //    m *= scaleY_matrix(1.5);
+    //    m *= move_matrix(100,100);
+    //
+    //    m.transform_my_point_at_last(x, y);
+    //
+    // What is the good of it? In real life we will set-up the matrix only once
+    // and then transform many points, let alone the convenience to set any 
+    // combination of transformations.
+    //
+    // So, how to use it? Very easy - literally as it's shown above. Not quite,
+    // let us write a correct example:
+    //
+    // agg::trans_affine m;
+    // m *= agg::trans_affine_rotation(30.0 * 3.1415926 / 180.0);
+    // m *= agg::trans_affine_scaling(2.0, 1.5);
+    // m *= agg::trans_affine_translation(100.0, 100.0);
+    // m.transform(&x, &y);
+    //
+    // The affine matrix is all you need to perform any linear transformation,
+    // but all transformations have origin point (0,0). It means that we need to 
+    // use 2 translations if we want to rotate someting around (100,100):
+    // 
+    // m *= agg::trans_affine_translation(-100.0, -100.0);         // move to (0,0)
+    // m *= agg::trans_affine_rotation(30.0 * 3.1415926 / 180.0);  // rotate
+    // m *= agg::trans_affine_translation(100.0, 100.0);           // move back to (100,100)
+    //----------------------------------------------------------------------
+    struct trans_affine
+    {
+        double sx, shy, shx, sy, tx, ty;
+
+        //------------------------------------------ Construction
+        // Identity matrix
+        trans_affine() :
+            sx(1.0), shy(0.0), shx(0.0), sy(1.0), tx(0.0), ty(0.0)
+        {}
+
+        // Custom matrix. Usually used in derived classes
+        trans_affine(double v0, double v1, double v2, 
+                     double v3, double v4, double v5) :
+            sx(v0), shy(v1), shx(v2), sy(v3), tx(v4), ty(v5)
+        {}
+
+        // Custom matrix from m[6]
+        explicit trans_affine(const double* m) :
+            sx(m[0]), shy(m[1]), shx(m[2]), sy(m[3]), tx(m[4]), ty(m[5])
+        {}
+
+        // Rectangle to a parallelogram.
+        trans_affine(double x1, double y1, double x2, double y2, 
+                     const double* parl)
+        {
+            rect_to_parl(x1, y1, x2, y2, parl);
+        }
+
+        // Parallelogram to a rectangle.
+        trans_affine(const double* parl, 
+                     double x1, double y1, double x2, double y2)
+        {
+            parl_to_rect(parl, x1, y1, x2, y2);
+        }
+
+        // Arbitrary parallelogram transformation.
+        trans_affine(const double* src, const double* dst)
+        {
+            parl_to_parl(src, dst);
+        }
+
+        //---------------------------------- Parellelogram transformations
+        // transform a parallelogram to another one. Src and dst are 
+        // pointers to arrays of three points (double[6], x1,y1,...) that 
+        // identify three corners of the parallelograms assuming implicit 
+        // fourth point. The arguments are arrays of double[6] mapped 
+        // to x1,y1, x2,y2, x3,y3  where the coordinates are:
+        //        *-----------------*
+        //       /          (x3,y3)/
+        //      /                 /
+        //     /(x1,y1)   (x2,y2)/
+        //    *-----------------*
+        const trans_affine& parl_to_parl(const double* src, 
+                                         const double* dst);
+
+        const trans_affine& rect_to_parl(double x1, double y1, 
+                                         double x2, double y2, 
+                                         const double* parl);
+
+        const trans_affine& parl_to_rect(const double* parl, 
+                                         double x1, double y1, 
+                                         double x2, double y2);
+
+
+        //------------------------------------------ Operations
+        // Reset - load an identity matrix
+        const trans_affine& reset();
+
+        // Direct transformations operations
+        const trans_affine& translate(double x, double y);
+        const trans_affine& rotate(double a);
+        const trans_affine& scale(double s);
+        const trans_affine& scale(double x, double y);
+
+        // Multiply matrix to another one
+        const trans_affine& multiply(const trans_affine& m);
+
+        // Multiply "m" to "this" and assign the result to "this"
+        const trans_affine& premultiply(const trans_affine& m);
+
+        // Multiply matrix to inverse of another one
+        const trans_affine& multiply_inv(const trans_affine& m);
+
+        // Multiply inverse of "m" to "this" and assign the result to "this"
+        const trans_affine& premultiply_inv(const trans_affine& m);
+
+        // Invert matrix. Do not try to invert degenerate matrices, 
+        // there's no check for validity. If you set scale to 0 and 
+        // then try to invert matrix, expect unpredictable result.
+        const trans_affine& invert();
+
+        // Mirroring around X
+        const trans_affine& flip_x();
+
+        // Mirroring around Y
+        const trans_affine& flip_y();
+
+        //------------------------------------------- Load/Store
+        // Store matrix to an array [6] of double
+        void store_to(double* m) const
+        {
+            *m++ = sx; *m++ = shy; *m++ = shx; *m++ = sy; *m++ = tx; *m++ = ty;
+        }
+
+        // Load matrix from an array [6] of double
+        const trans_affine& load_from(const double* m)
+        {
+            sx = *m++; shy = *m++; shx = *m++; sy = *m++; tx = *m++;  ty = *m++;
+            return *this;
+        }
+
+        //------------------------------------------- Operators
+        
+        // Multiply the matrix by another one
+        const trans_affine& operator *= (const trans_affine& m)
+        {
+            return multiply(m);
+        }
+
+        // Multiply the matrix by inverse of another one
+        const trans_affine& operator /= (const trans_affine& m)
+        {
+            return multiply_inv(m);
+        }
+
+        // Multiply the matrix by another one and return
+        // the result in a separete matrix.
+        trans_affine operator * (const trans_affine& m) const
+        {
+            return trans_affine(*this).multiply(m);
+        }
+
+        // Multiply the matrix by inverse of another one 
+        // and return the result in a separete matrix.
+        trans_affine operator / (const trans_affine& m) const
+        {
+            return trans_affine(*this).multiply_inv(m);
+        }
+
+        // Calculate and return the inverse matrix
+        trans_affine operator ~ () const
+        {
+            trans_affine ret = *this;
+            return ret.invert();
+        }
+
+        // Equal operator with default epsilon
+        bool operator == (const trans_affine& m) const
+        {
+            return is_equal(m, affine_epsilon);
+        }
+
+        // Not Equal operator with default epsilon
+        bool operator != (const trans_affine& m) const
+        {
+            return !is_equal(m, affine_epsilon);
+        }
+
+        //-------------------------------------------- Transformations
+        // Direct transformation of x and y
+        void transform(double* x, double* y) const;
+
+        // Direct transformation of x and y, 2x2 matrix only, no translation
+        void transform_2x2(double* x, double* y) const;
+
+        // Inverse transformation of x and y. It works slower than the 
+        // direct transformation. For massive operations it's better to 
+        // invert() the matrix and then use direct transformations. 
+        void inverse_transform(double* x, double* y) const;
+
+        //-------------------------------------------- Auxiliary
+        // Calculate the determinant of matrix
+        double determinant() const
+        {
+            return sx * sy - shy * shx;
+        }
+
+        // Calculate the reciprocal of the determinant
+        double determinant_reciprocal() const
+        {
+            return 1.0 / (sx * sy - shy * shx);
+        }
+
+        // Get the average scale (by X and Y). 
+        // Basically used to calculate the approximation_scale when
+        // decomposinting curves into line segments.
+        double scale() const;
+
+        // Check to see if the matrix is not degenerate
+        bool is_valid(double epsilon = affine_epsilon) const;
+
+        // Check to see if it's an identity matrix
+        bool is_identity(double epsilon = affine_epsilon) const;
+
+        // Check to see if two matrices are equal
+        bool is_equal(const trans_affine& m, double epsilon = affine_epsilon) const;
+
+        // Determine the major parameters. Use with caution considering 
+        // possible degenerate cases.
+        double rotation() const;
+        void   translation(double* dx, double* dy) const;
+        void   scaling(double* x, double* y) const;
+        void   scaling_abs(double* x, double* y) const;
+    };
+
+    //------------------------------------------------------------------------
+    inline void trans_affine::transform(double* x, double* y) const
+    {
+        double tmp = *x;
+        *x = tmp * sx  + *y * shx + tx;
+        *y = tmp * shy + *y * sy  + ty;
+    }
+
+    //------------------------------------------------------------------------
+    inline void trans_affine::transform_2x2(double* x, double* y) const
+    {
+        double tmp = *x;
+        *x = tmp * sx  + *y * shx;
+        *y = tmp * shy + *y * sy;
+    }
+
+    //------------------------------------------------------------------------
+    inline void trans_affine::inverse_transform(double* x, double* y) const
+    {
+        double d = determinant_reciprocal();
+        double a = (*x - tx) * d;
+        double b = (*y - ty) * d;
+        *x = a * sy - b * shx;
+        *y = b * sx - a * shy;
+    }
+
+    //------------------------------------------------------------------------
+    inline double trans_affine::scale() const
+    {
+        double x = 0.707106781 * sx  + 0.707106781 * shx;
+        double y = 0.707106781 * shy + 0.707106781 * sy;
+        return sqrt(x*x + y*y);
+    }
+
+    //------------------------------------------------------------------------
+    inline const trans_affine& trans_affine::translate(double x, double y) 
+    { 
+        tx += x;
+        ty += y; 
+        return *this;
+    }
+
+    //------------------------------------------------------------------------
+    inline const trans_affine& trans_affine::rotate(double a) 
+    {
+        double ca = cos(a); 
+        double sa = sin(a);
+        double t0 = sx  * ca - shy * sa;
+        double t2 = shx * ca - sy * sa;
+        double t4 = tx  * ca - ty * sa;
+        shy = sx  * sa + shy * ca;
+        sy  = shx * sa + sy * ca; 
+        ty  = tx  * sa + ty * ca;
+        sx  = t0;
+        shx = t2;
+        tx  = t4;
+        return *this;
+    }
+
+    //------------------------------------------------------------------------
+    inline const trans_affine& trans_affine::scale(double x, double y) 
+    {
+        double mm0 = x; // Possible hint for the optimizer
+        double mm3 = y; 
+        sx  *= mm0;
+        shx *= mm0;
+        tx  *= mm0;
+        shy *= mm3;
+        sy  *= mm3;
+        ty  *= mm3;
+        return *this;
+    }
+
+    //------------------------------------------------------------------------
+    inline const trans_affine& trans_affine::scale(double s) 
+    {
+        double m = s; // Possible hint for the optimizer
+        sx  *= m;
+        shx *= m;
+        tx  *= m;
+        shy *= m;
+        sy  *= m;
+        ty  *= m;
+        return *this;
+    }
+
+    //------------------------------------------------------------------------
+    inline const trans_affine& trans_affine::premultiply(const trans_affine& m)
+    {
+        trans_affine t = m;
+        return *this = t.multiply(*this);
+    }
+
+    //------------------------------------------------------------------------
+    inline const trans_affine& trans_affine::multiply_inv(const trans_affine& m)
+    {
+        trans_affine t = m;
+        t.invert();
+        return multiply(t);
+    }
+
+    //------------------------------------------------------------------------
+    inline const trans_affine& trans_affine::premultiply_inv(const trans_affine& m)
+    {
+        trans_affine t = m;
+        t.invert();
+        return *this = t.multiply(*this);
+    }
+
+    //------------------------------------------------------------------------
+    inline void trans_affine::scaling_abs(double* x, double* y) const
+    {
+        // Used to calculate scaling coefficients in image resampling. 
+        // When there is considerable shear this method gives us much
+        // better estimation than just sx, sy.
+        *x = sqrt(sx  * sx  + shx * shx);
+        *y = sqrt(shy * shy + sy  * sy);
+    }
+
+    //====================================================trans_affine_rotation
+    // Rotation matrix. sin() and cos() are calculated twice for the same angle.
+    // There's no harm because the performance of sin()/cos() is very good on all
+    // modern processors. Besides, this operation is not going to be invoked too 
+    // often.
+    class trans_affine_rotation : public trans_affine
+    {
+    public:
+        trans_affine_rotation(double a) : 
+          trans_affine(cos(a), sin(a), -sin(a), cos(a), 0.0, 0.0)
+        {}
+    };
+
+    //====================================================trans_affine_scaling
+    // Scaling matrix. x, y - scale coefficients by X and Y respectively
+    class trans_affine_scaling : public trans_affine
+    {
+    public:
+        trans_affine_scaling(double x, double y) : 
+          trans_affine(x, 0.0, 0.0, y, 0.0, 0.0)
+        {}
+
+        trans_affine_scaling(double s) : 
+          trans_affine(s, 0.0, 0.0, s, 0.0, 0.0)
+        {}
+    };
+
+    //================================================trans_affine_translation
+    // Translation matrix
+    class trans_affine_translation : public trans_affine
+    {
+    public:
+        trans_affine_translation(double x, double y) : 
+          trans_affine(1.0, 0.0, 0.0, 1.0, x, y)
+        {}
+    };
+
+    //====================================================trans_affine_skewing
+    // Sckewing (shear) matrix
+    class trans_affine_skewing : public trans_affine
+    {
+    public:
+        trans_affine_skewing(double x, double y) : 
+          trans_affine(1.0, tan(y), tan(x), 1.0, 0.0, 0.0)
+        {}
+    };
+
+
+    //===============================================trans_affine_line_segment
+    // Rotate, Scale and Translate, associating 0...dist with line segment 
+    // x1,y1,x2,y2
+    class trans_affine_line_segment : public trans_affine
+    {
+    public:
+        trans_affine_line_segment(double x1, double y1, double x2, double y2, 
+                                  double dist)
+        {
+            double dx = x2 - x1;
+            double dy = y2 - y1;
+            if(dist > 0.0)
+            {
+                multiply(trans_affine_scaling(sqrt(dx * dx + dy * dy) / dist));
+            }
+            multiply(trans_affine_rotation(atan2(dy, dx)));
+            multiply(trans_affine_translation(x1, y1));
+        }
+    };
+
+
+    //============================================trans_affine_reflection_unit
+    // Reflection matrix. Reflect coordinates across the line through 
+    // the origin containing the unit vector (ux, uy).
+    // Contributed by John Horigan
+    class trans_affine_reflection_unit : public trans_affine
+    {
+    public:
+        trans_affine_reflection_unit(double ux, double uy) :
+          trans_affine(2.0 * ux * ux - 1.0, 
+                       2.0 * ux * uy, 
+                       2.0 * ux * uy, 
+                       2.0 * uy * uy - 1.0, 
+                       0.0, 0.0)
+        {}
+    };
+
+
+    //=================================================trans_affine_reflection
+    // Reflection matrix. Reflect coordinates across the line through 
+    // the origin at the angle a or containing the non-unit vector (x, y).
+    // Contributed by John Horigan
+    class trans_affine_reflection : public trans_affine_reflection_unit
+    {
+    public:
+        trans_affine_reflection(double a) :
+          trans_affine_reflection_unit(cos(a), sin(a))
+        {}
+
+
+        trans_affine_reflection(double x, double y) :
+          trans_affine_reflection_unit(x / sqrt(x * x + y * y), y / sqrt(x * x + y * y))
+        {}
+    };
+
+}
+
+
+#endif
+

deps_src/agg/copying

@@ -0,0 +1,65 @@
+The Anti-Grain Geometry Project
+A high quality rendering engine for C++
+http://antigrain.com
+
+Anti-Grain Geometry has dual licensing model. The Modified BSD 
+License was first added in version v2.4 just for convenience.
+It is a simple, permissive non-copyleft free software license, 
+compatible with the GNU GPL. It's well proven and recognizable.
+See http://www.fsf.org/licensing/licenses/index_html#ModifiedBSD
+for details.
+
+Note that the Modified BSD license DOES NOT restrict your rights 
+if you choose the Anti-Grain Geometry Public License.
+
+
+
+
+Anti-Grain Geometry Public License
+====================================================
+
+Anti-Grain Geometry - Version 2.4 
+Copyright (C) 2002-2005 Maxim Shemanarev (McSeem) 
+
+Permission to copy, use, modify, sell and distribute this software 
+is granted provided this copyright notice appears in all copies. 
+This software is provided "as is" without express or implied
+warranty, and with no claim as to its suitability for any purpose.
+
+
+
+
+
+Modified BSD License
+====================================================
+Anti-Grain Geometry - Version 2.4 
+Copyright (C) 2002-2005 Maxim Shemanarev (McSeem) 
+
+Redistribution and use in source and binary forms, with or without 
+modification, are permitted provided that the following conditions 
+are met:
+
+  1. Redistributions of source code must retain the above copyright 
+     notice, this list of conditions and the following disclaimer. 
+
+  2. Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in 
+     the documentation and/or other materials provided with the 
+     distribution. 
+
+  3. The name of the author may not be used to endorse or promote 
+     products derived from this software without specific prior 
+     written permission. 
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+POSSIBILITY OF SUCH DAMAGE.
+

deps_src/ankerl/CMakeLists.txt

@@ -0,0 +1,12 @@
+cmake_minimum_required(VERSION 3.13)
+project(ankerl)
+
+add_library(ankerl INTERFACE)
+
+target_include_directories(ankerl INTERFACE
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+target_sources(ankerl INTERFACE
+    ${CMAKE_CURRENT_SOURCE_DIR}/unordered_dense.h
+)

deps_src/ankerl/README.txt

@@ -0,0 +1,7 @@
+THIS DIRECTORY CONTAINS PIECES OF THE 
+ankerl::unordered_dense::{map, set}
+https://github.com/martinus/unordered_dense
+unordered_dense 4.5.0 73f3cbb237e84d483afafc743f1f14ec53e12314
+SOURCE DISTRIBUTION.
+
+THIS IS NOT THE COMPLETE unordered_dense DISTRIBUTION. ONLY FILES NEEDED FOR COMPILING PRUSASLICER WERE PUT INTO THE PRUSASLICER SOURCE DISTRIBUTION.

deps_src/clipper/CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.13)
+project(clipper)
+
+add_library(clipper STATIC
+# We are using ClipperLib compiled as part of the libslic3r project using Slic3r::Point as its base type.
+#    clipper.cpp
+#    clipper.hpp
+    clipper_z.cpp
+    clipper_z.hpp
+)
+
+target_include_directories(clipper PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+target_link_libraries(clipper 
+    PUBLIC eigen
+    PRIVATE TBB::tbb TBB::tbbmalloc
+)

deps_src/clipper/clipper.hpp

@@ -0,0 +1,606 @@
+/*******************************************************************************
+*                                                                              *
+* Author    :  Angus Johnson                                                   *
+* Version   :  6.4.2                                                           *
+* Date      :  27 February 2017                                                *
+* Website   :  http://www.angusj.com                                           *
+* Copyright :  Angus Johnson 2010-2017                                         *
+*                                                                              *
+* License:                                                                     *
+* Use, modification & distribution is subject to Boost Software License Ver 1. *
+* http://www.boost.org/LICENSE_1_0.txt                                         *
+*                                                                              *
+* Attributions:                                                                *
+* The code in this library is an extension of Bala Vatti's clipping algorithm: *
+* "A generic solution to polygon clipping"                                     *
+* Communications of the ACM, Vol 35, Issue 7 (July 1992) pp 56-63.             *
+* http://portal.acm.org/citation.cfm?id=129906                                 *
+*                                                                              *
+* Computer graphics and geometric modeling: implementation and algorithms      *
+* By Max K. Agoston                                                            *
+* Springer; 1 edition (January 4, 2005)                                        *
+* http://books.google.com/books?q=vatti+clipping+agoston                       *
+*                                                                              *
+* See also:                                                                    *
+* "Polygon Offsetting by Computing Winding Numbers"                            *
+* Paper no. DETC2005-85513 pp. 565-575                                         *
+* ASME 2005 International Design Engineering Technical Conferences             *
+* and Computers and Information in Engineering Conference (IDETC/CIE2005)      *
+* September 24-28, 2005 , Long Beach, California, USA                          *
+* http://www.me.berkeley.edu/~mcmains/pubs/DAC05OffsetPolygon.pdf              *
+*                                                                              *
+*******************************************************************************/
+
+#ifndef clipper_hpp
+#define clipper_hpp
+
+#include <inttypes.h>
+#include <functional>
+
+#include <Eigen/Geometry> 
+
+#include <oneapi/tbb/scalable_allocator.h>
+
+#define CLIPPER_VERSION "6.2.6"
+
+//CLIPPERLIB_USE_XYZ: adds a Z member to IntPoint. Adds a minor cost to perfomance.
+//#define CLIPPERLIB_USE_XYZ
+
+//use_lines: Enables line clipping. Adds a very minor cost to performance.
+#define use_lines
+  
+//use_deprecated: Enables temporary support for the obsolete functions
+//#define use_deprecated  
+
+#include <array>
+#include <vector>
+#include <deque>
+#include <stdexcept>
+#include <cstring>
+#include <cstdlib>
+#include <ostream>
+#include <functional>
+#include <queue>
+
+#ifdef CLIPPERLIB_NAMESPACE_PREFIX
+  namespace CLIPPERLIB_NAMESPACE_PREFIX {
+#endif // CLIPPERLIB_NAMESPACE_PREFIX
+
+#ifdef CLIPPERLIB_USE_XYZ
+  namespace ClipperLib_Z {
+#else
+  namespace ClipperLib {
+#endif
+
+enum ClipType { ctIntersection, ctUnion, ctDifference, ctXor };
+enum PolyType { ptSubject, ptClip };
+//By far the most widely used winding rules for polygon filling are
+//EvenOdd & NonZero (GDI, GDI+, XLib, OpenGL, Cairo, AGG, Quartz, SVG, Gr32)
+//Others rules include Positive, Negative and ABS_GTR_EQ_TWO (only in OpenGL)
+//see http://glprogramming.com/red/chapter11.html
+enum PolyFillType { pftEvenOdd, pftNonZero, pftPositive, pftNegative };
+
+// If defined, Clipper will work with 32bit signed int coordinates to reduce memory
+// consumption and to speed up exact orientation predicate calculation.
+// In that case, coordinates and their differences (vectors of the coordinates) have to fit int32_t.
+// #define CLIPPERLIB_INT32
+
+// Point coordinate type
+#ifdef CLIPPERLIB_INT32
+  // Coordinates and their differences (vectors of the coordinates) have to fit int32_t.
+  using cInt = int32_t;
+  using CrossProductType = int64_t;
+#else
+  using cInt = int64_t;
+  using CrossProductType = double;
+  // Maximum cInt value to allow a cross product calculation using 32bit expressions.
+  static constexpr cInt const loRange = 0x3FFFFFFF; // 0x3FFFFFFF = 1 073 741 823
+  // Maximum allowed cInt value.
+  static constexpr cInt const hiRange = 0x3FFFFFFFFFFFFFFFLL;
+#endif // CLIPPERLIB_INT32
+
+#ifdef CLIPPERLIB_INTPOINT_TYPE
+using IntPoint = CLIPPERLIB_INTPOINT_TYPE;
+#else // CLIPPERLIB_INTPOINT_TYPE
+using IntPoint = Eigen::Matrix<cInt, 
+#ifdef CLIPPERLIB_USE_XYZ
+  3
+#else // CLIPPERLIB_USE_XYZ
+  2
+#endif // CLIPPERLIB_USE_XYZ
+  , 1, Eigen::DontAlign>;
+#endif // CLIPPERLIB_INTPOINT_TYPE
+
+using DoublePoint = Eigen::Matrix<double, 2, 1, Eigen::DontAlign>;
+
+//------------------------------------------------------------------------------
+
+template<typename BaseType>
+using Allocator = tbb::scalable_allocator<BaseType>;
+//using Allocator = std::allocator<BaseType>;
+using Path      = std::vector<IntPoint, Allocator<IntPoint>>;
+using Paths     = std::vector<Path, Allocator<Path>>;
+
+inline Path& operator <<(Path& poly, const IntPoint& p) {poly.push_back(p); return poly;}
+inline Paths& operator <<(Paths& polys, const Path& p) {polys.push_back(p); return polys;}
+
+std::ostream& operator <<(std::ostream &s, const IntPoint &p);
+std::ostream& operator <<(std::ostream &s, const Path &p);
+std::ostream& operator <<(std::ostream &s, const Paths &p);
+
+//------------------------------------------------------------------------------
+
+#ifdef CLIPPERLIB_USE_XYZ
+typedef std::function<void(const IntPoint& e1bot, const IntPoint& e1top, const IntPoint& e2bot, const IntPoint& e2top, IntPoint& pt)> ZFillCallback;
+#endif
+
+enum InitOptions {ioReverseSolution = 1, ioStrictlySimple = 2, ioPreserveCollinear = 4};
+enum JoinType {jtSquare, jtRound, jtMiter};
+enum EndType {etClosedPolygon, etClosedLine, etOpenButt, etOpenSquare, etOpenRound};
+
+class PolyNode;
+typedef std::vector<PolyNode*, Allocator<PolyNode*>> PolyNodes;
+
+class PolyNode 
+{ 
+public:
+    PolyNode() : Parent(0), Index(0), m_IsOpen(false) {}
+    virtual ~PolyNode(){};
+    Path Contour;
+    PolyNodes Childs;
+    PolyNode* Parent;
+    // Traversal of the polygon tree in a depth first fashion.
+    PolyNode* GetNext() const { return Childs.empty() ? GetNextSiblingUp() : Childs.front(); }
+    bool IsHole() const;
+    bool IsOpen() const { return m_IsOpen; }  
+    int  ChildCount() const { return (int)Childs.size(); }
+private:
+    unsigned Index; //node index in Parent.Childs
+    bool m_IsOpen;
+    JoinType m_jointype;
+    EndType m_endtype;
+    PolyNode* GetNextSiblingUp() const { return Parent ? ((Index == Parent->Childs.size() - 1) ? Parent->GetNextSiblingUp() : Parent->Childs[Index + 1]) : nullptr; }
+    void AddChild(PolyNode& child);
+    friend class Clipper; //to access Index
+    friend class ClipperOffset;
+    friend class PolyTree; //to implement the PolyTree::move operator
+};
+
+class PolyTree: public PolyNode
+{ 
+public:
+    PolyTree() {}
+    PolyTree(PolyTree &&src) { *this = std::move(src); }
+    virtual ~PolyTree(){Clear();};
+    PolyTree& operator=(PolyTree &&src) { 
+        AllNodes   = std::move(src.AllNodes);
+        Contour    = std::move(src.Contour);
+        Childs     = std::move(src.Childs);
+        Parent     = nullptr;
+        Index      = src.Index;
+        m_IsOpen   = src.m_IsOpen;
+        m_jointype = src.m_jointype;
+        m_endtype  = src.m_endtype;
+        for (size_t i = 0; i < Childs.size(); ++ i)
+          Childs[i]->Parent = this;
+        return *this; 
+    }
+    PolyNode* GetFirst() const { return Childs.empty() ? nullptr : Childs.front(); }
+    void Clear() {  AllNodes.clear(); Childs.clear(); }
+    int Total() const;
+    void RemoveOutermostPolygon();
+private:
+    PolyTree(const PolyTree &src) = delete;
+    PolyTree& operator=(const PolyTree &src) = delete;
+    std::vector<PolyNode, Allocator<PolyNode>> AllNodes;
+    friend class Clipper; //to access AllNodes
+};
+
+double Area(const Path &poly);
+inline bool Orientation(const Path &poly) { return Area(poly) >= 0; }
+int PointInPolygon(const IntPoint &pt, const Path &path);
+
+// Union with "strictly simple" fix enabled.
+Paths SimplifyPolygon(const Path &in_poly, PolyFillType fillType = pftNonZero, bool strictly_simple = true);
+
+void CleanPolygon(const Path& in_poly, Path& out_poly, double distance = 1.415);
+void CleanPolygon(Path& poly, double distance = 1.415);
+void CleanPolygons(const Paths& in_polys, Paths& out_polys, double distance = 1.415);
+void CleanPolygons(Paths& polys, double distance = 1.415);
+
+void MinkowskiSum(const Path& pattern, const Path& path, Paths& solution, bool pathIsClosed);
+void MinkowskiSum(const Path& pattern, const Paths& paths, Paths& solution, bool pathIsClosed);
+void MinkowskiDiff(const Path& poly1, const Path& poly2, Paths& solution);
+
+void PolyTreeToPaths(const PolyTree& polytree, Paths& paths);
+void PolyTreeToPaths(PolyTree&& polytree, Paths& paths);
+void ClosedPathsFromPolyTree(const PolyTree& polytree, Paths& paths);
+void OpenPathsFromPolyTree(PolyTree& polytree, Paths& paths);
+
+void ReversePath(Path& p);
+void ReversePaths(Paths& p);
+
+struct IntRect { cInt left; cInt top; cInt right; cInt bottom; };
+
+//enums that are used internally ...
+enum EdgeSide { esLeft = 1, esRight = 2};
+
+// namespace Internal {
+  //forward declarations (for stuff used internally) ...
+  struct TEdge {
+    // Bottom point of this edge (with minimum Y).
+    IntPoint Bot;
+    // Current position.
+    IntPoint Curr;
+    // Top point of this edge (with maximum Y).
+    IntPoint Top;
+    // Slope (dx/dy). For horiontal edges, the slope is set to HORIZONTAL (-1.0E+40).
+    double Dx;
+    PolyType PolyTyp;
+    EdgeSide Side;
+    // Winding number delta. 1 or -1 depending on winding direction, 0 for open paths and flat closed paths.
+    int WindDelta;
+    int WindCnt;
+    int WindCnt2; //winding count of the opposite polytype
+    int OutIdx;
+    // Next edge in the input path.
+    TEdge *Next;
+    // Previous edge in the input path.
+    TEdge *Prev;
+    // Next edge in the Local Minima List chain.
+    TEdge *NextInLML;
+    TEdge *NextInAEL;
+    TEdge *PrevInAEL;
+    TEdge *NextInSEL;
+    TEdge *PrevInSEL;
+  };
+
+  struct IntersectNode {
+    IntersectNode(TEdge *Edge1, TEdge *Edge2, IntPoint Pt) :
+      Edge1(Edge1), Edge2(Edge2), Pt(Pt) {}
+    TEdge          *Edge1;
+    TEdge          *Edge2;
+    IntPoint        Pt;
+  };
+
+  struct LocalMinimum {
+    cInt          Y;
+    TEdge        *LeftBound;
+    TEdge        *RightBound;
+  };
+
+  // Point of an output polygon.
+  // 36B on 64bit system without CLIPPERLIB_USE_XYZ.
+  struct OutPt {
+    // 4B
+    int       Idx;
+    // 16B without CLIPPERLIB_USE_XYZ / 24B with CLIPPERLIB_USE_XYZ
+    IntPoint  Pt;
+    // 4B on 32bit system, 8B on 64bit system
+    OutPt    *Next;
+    // 4B on 32bit system, 8B on 64bit system
+    OutPt    *Prev;
+  };
+
+  using OutPts = std::vector<OutPt, Allocator<OutPt>>;
+
+  // Output polygon.
+  struct OutRec {
+      int       Idx;
+      bool      IsHole;
+      bool      IsOpen;
+      //The 'FirstLeft' field points to another OutRec that contains or is the
+      //'parent' of OutRec. It is 'first left' because the ActiveEdgeList (AEL) is
+      //parsed left from the current edge (owning OutRec) until the owner OutRec
+      //is found. This field simplifies sorting the polygons into a tree structure
+      //which reflects the parent/child relationships of all polygons.
+      //This field should be renamed Parent, and will be later.
+      OutRec* FirstLeft;
+      // Used only by void Clipper::BuildResult2(PolyTree& polytree)
+      PolyNode* PolyNd;
+      // Linked list of output points, dynamically allocated.
+      OutPt* Pts;
+      OutPt* BottomPt;
+  };
+
+  struct Join {
+    Join(OutPt *OutPt1, OutPt *OutPt2, IntPoint OffPt) :
+      OutPt1(OutPt1), OutPt2(OutPt2), OffPt(OffPt) {}
+    OutPt    *OutPt1;
+    OutPt    *OutPt2;
+    IntPoint  OffPt;
+  };
+// }; // namespace Internal
+
+//------------------------------------------------------------------------------
+
+//ClipperBase is the ancestor to the Clipper class. It should not be
+//instantiated directly. This class simply abstracts the conversion of sets of
+//polygon coordinates into edge objects that are stored in a LocalMinima list.
+class ClipperBase
+{
+public:
+  ClipperBase() : 
+#ifndef CLIPPERLIB_INT32
+    m_UseFullRange(false), 
+#endif // CLIPPERLIB_INT32
+    m_HasOpenPaths(false) {}
+  ~ClipperBase() { Clear(); }
+  bool AddPath(const Path &pg, PolyType PolyTyp, bool Closed);
+
+  template<typename PathsProvider>
+  bool AddPaths(PathsProvider &&paths_provider, PolyType PolyTyp, bool Closed)
+  {
+    size_t num_paths = paths_provider.size();
+    if (num_paths == 0)
+        return false;
+    if (num_paths == 1)
+        return AddPath(*paths_provider.begin(), PolyTyp, Closed);
+
+    std::vector<int, Allocator<int>> num_edges(num_paths, 0);
+    int num_edges_total = 0;
+    size_t i = 0;
+    for (const Path &pg : paths_provider) {
+      // Remove duplicate end point from a closed input path.
+      // Remove duplicate points from the end of the input path.
+      int highI = (int)pg.size() -1;
+      if (Closed) 
+        while (highI > 0 && (pg[highI] == pg[0])) 
+          --highI;
+      while (highI > 0 && (pg[highI] == pg[highI -1])) 
+        --highI;
+      if ((Closed && highI < 2) || (!Closed && highI < 1))
+        highI = -1;
+      num_edges[i ++] = highI + 1;
+      num_edges_total += highI + 1;
+    }
+    if (num_edges_total == 0)
+      return false;
+
+    // Allocate a new edge array.
+    std::vector<TEdge, Allocator<TEdge>> edges(num_edges_total);
+    // Fill in the edge array.
+    bool result = false;
+    TEdge *p_edge = edges.data();
+    i = 0;
+    for (const Path &pg : paths_provider) {
+      if (num_edges[i] && !pg.empty()) {
+        bool res = AddPathInternal(pg, num_edges[i] - 1, PolyTyp, Closed, p_edge);
+        if (res) {
+          p_edge += num_edges[i];
+          result = true;
+        }
+      }
+      ++ i;
+    }
+    if (result)
+      // At least some edges were generated. Remember the edge array.
+      m_edges.emplace_back(std::move(edges));
+    return result;
+  }
+
+  void Clear();
+  IntRect GetBounds();
+  // By default, when three or more vertices are collinear in input polygons (subject or clip), the Clipper object removes the 'inner' vertices before clipping.
+  // When enabled the PreserveCollinear property prevents this default behavior to allow these inner vertices to appear in the solution.
+  bool PreserveCollinear() const {return m_PreserveCollinear;};
+  void PreserveCollinear(bool value) {m_PreserveCollinear = value;};
+protected:
+  bool AddPathInternal(const Path &pg, int highI, PolyType PolyTyp, bool Closed, TEdge* edges);
+  TEdge* AddBoundsToLML(TEdge *e, bool IsClosed);
+  void Reset();
+  TEdge* ProcessBound(TEdge* E, bool IsClockwise);
+  TEdge* DescendToMin(TEdge *&E);
+  void AscendToMax(TEdge *&E, bool Appending, bool IsClosed);
+
+  // Local minima (Y, left edge, right edge) sorted by ascending Y.
+  std::vector<LocalMinimum, Allocator<LocalMinimum>> m_MinimaList;
+
+#ifdef CLIPPERLIB_INT32
+  static constexpr const bool m_UseFullRange = false;
+#else // CLIPPERLIB_INT32
+  // True if the input polygons have abs values higher than loRange, but lower than hiRange.
+  // False if the input polygons have abs values lower or equal to loRange.
+  bool              m_UseFullRange;
+#endif // CLIPPERLIB_INT32
+
+  // A vector of edges per each input path.
+  using Edges = std::vector<TEdge, Allocator<TEdge>>;
+  std::vector<Edges, Allocator<Edges>> m_edges;
+  // Don't remove intermediate vertices of a collinear sequence of points.
+  bool             m_PreserveCollinear;
+  // Is any of the paths inserted by AddPath() or AddPaths() open?
+  bool             m_HasOpenPaths;
+};
+//------------------------------------------------------------------------------
+
+class Clipper : public ClipperBase
+{
+public:
+  Clipper(int initOptions = 0);
+  ~Clipper() { Clear(); }
+  void Clear() { ClipperBase::Clear(); DisposeAllOutRecs(); }
+  bool Execute(ClipType clipType,
+      Paths &solution,
+      PolyFillType fillType = pftEvenOdd) 
+    { return Execute(clipType, solution, fillType, fillType); }
+  bool Execute(ClipType clipType,
+      Paths &solution,
+      PolyFillType subjFillType,
+      PolyFillType clipFillType);
+  bool Execute(ClipType clipType,
+      PolyTree &polytree,
+      PolyFillType fillType = pftEvenOdd)
+    { return Execute(clipType, polytree, fillType, fillType); }
+  bool Execute(ClipType clipType,
+      PolyTree &polytree,
+      PolyFillType subjFillType,
+      PolyFillType clipFillType);
+  bool ReverseSolution() const { return m_ReverseOutput; };
+  void ReverseSolution(bool value) {m_ReverseOutput = value;};
+  bool StrictlySimple() const {return m_StrictSimple;};
+  void StrictlySimple(bool value) {m_StrictSimple = value;};
+  //set the callback function for z value filling on intersections (otherwise Z is 0)
+#ifdef CLIPPERLIB_USE_XYZ
+  void ZFillFunction(ZFillCallback zFillFunc) { m_ZFill = zFillFunc; }
+#endif
+protected:
+  void Reset();
+  virtual bool ExecuteInternal();
+private:
+  
+  // Output polygons.
+  std::deque<OutRec, Allocator<OutRec>>  m_PolyOuts;
+  // Output points, allocated by a continuous sets of m_OutPtsChunkSize.
+  static constexpr const size_t m_OutPtsChunkSize = 32;
+  std::deque<std::array<OutPt, m_OutPtsChunkSize>, Allocator<std::array<OutPt, m_OutPtsChunkSize>>> m_OutPts;
+  // List of free output points, to be used before taking a point from m_OutPts or allocating a new chunk.
+  OutPt                *m_OutPtsFree;
+  size_t                m_OutPtsChunkLast;
+
+  std::vector<Join, Allocator<Join>>     m_Joins;
+  std::vector<Join, Allocator<Join>>     m_GhostJoins;
+  std::vector<IntersectNode, Allocator<IntersectNode>> m_IntersectList;
+  ClipType              m_ClipType;
+  // A priority queue (a binary heap) of Y coordinates.
+  using cInts = std::vector<cInt, Allocator<cInt>>;
+  std::priority_queue<cInt, cInts> m_Scanbeam;
+  // Maxima are collected by ProcessEdgesAtTopOfScanbeam(), consumed by ProcessHorizontal().
+  cInts                 m_Maxima;
+  TEdge                *m_ActiveEdges;
+  TEdge                *m_SortedEdges;
+  PolyFillType          m_ClipFillType;
+  PolyFillType          m_SubjFillType;
+  bool                  m_ReverseOutput;
+  // Does the result go to a PolyTree or Paths?
+  bool                  m_UsingPolyTree; 
+  bool                  m_StrictSimple;
+#ifdef CLIPPERLIB_USE_XYZ
+  ZFillCallback         m_ZFill; //custom callback 
+#endif
+  void SetWindingCount(TEdge& edge) const;
+  bool IsEvenOddFillType(const TEdge& edge) const 
+    { return (edge.PolyTyp == ptSubject) ? m_SubjFillType == pftEvenOdd : m_ClipFillType == pftEvenOdd; }
+  bool IsEvenOddAltFillType(const TEdge& edge) const
+    { return (edge.PolyTyp == ptSubject) ? m_ClipFillType == pftEvenOdd : m_SubjFillType == pftEvenOdd; }
+  void InsertLocalMinimaIntoAEL(const cInt botY);
+  void InsertEdgeIntoAEL(TEdge *edge, TEdge* startEdge);
+  void AddEdgeToSEL(TEdge *edge);
+  void CopyAELToSEL();
+  void DeleteFromSEL(TEdge *e);
+  void DeleteFromAEL(TEdge *e);
+  void UpdateEdgeIntoAEL(TEdge *&e);
+  void SwapPositionsInSEL(TEdge *edge1, TEdge *edge2);
+  bool IsContributing(const TEdge& edge) const;
+  bool IsTopHorz(const cInt XPos);
+  void SwapPositionsInAEL(TEdge *edge1, TEdge *edge2);
+  void DoMaxima(TEdge *e);
+  void ProcessHorizontals();
+  void ProcessHorizontal(TEdge *horzEdge);
+  void AddLocalMaxPoly(TEdge *e1, TEdge *e2, const IntPoint &pt);
+  OutPt* AddLocalMinPoly(TEdge *e1, TEdge *e2, const IntPoint &pt);
+  OutRec* GetOutRec(int idx);
+  void AppendPolygon(TEdge *e1, TEdge *e2);
+  void IntersectEdges(TEdge *e1, TEdge *e2, IntPoint &pt);
+  OutRec* CreateOutRec();
+  OutPt* AddOutPt(TEdge *e, const IntPoint &pt);
+  OutPt* GetLastOutPt(TEdge *e);
+  OutPt* AllocateOutPt();
+  OutPt* DupOutPt(OutPt* outPt, bool InsertAfter);
+  // Add the point to a list of free points.
+  void DisposeOutPt(OutPt *pt) { pt->Next = m_OutPtsFree; m_OutPtsFree = pt; }
+  void DisposeOutPts(OutPt*& pp) { if (pp != nullptr) { pp->Prev->Next = m_OutPtsFree; m_OutPtsFree = pp; } }
+  void DisposeAllOutRecs();
+  bool ProcessIntersections(const cInt topY);
+  void BuildIntersectList(const cInt topY);
+  void ProcessEdgesAtTopOfScanbeam(const cInt topY);
+  void BuildResult(Paths& polys);
+  void BuildResult2(PolyTree& polytree);
+  void SetHoleState(TEdge *e, OutRec *outrec);
+  bool FixupIntersectionOrder();
+  void FixupOutPolygon(OutRec &outrec);
+  void FixupOutPolyline(OutRec &outrec);
+  bool FindOwnerFromSplitRecs(OutRec &outRec, OutRec *&currOrfl);
+  void FixHoleLinkage(OutRec &outrec);
+  bool JoinPoints(Join *j, OutRec* outRec1, OutRec* outRec2);
+  bool JoinHorz(OutPt* op1, OutPt* op1b, OutPt* op2, OutPt* op2b, const IntPoint &Pt, bool DiscardLeft);
+  void JoinCommonEdges();
+  void DoSimplePolygons();
+  void FixupFirstLefts1(OutRec* OldOutRec, OutRec* NewOutRec);
+  void FixupFirstLefts2(OutRec* InnerOutRec, OutRec* OuterOutRec);
+  void FixupFirstLefts3(OutRec* OldOutRec, OutRec* NewOutRec);
+#ifdef CLIPPERLIB_USE_XYZ
+  void SetZ(IntPoint& pt, TEdge& e1, TEdge& e2);
+#endif
+};
+//------------------------------------------------------------------------------
+
+class ClipperOffset 
+{
+public:
+  ClipperOffset(double miterLimit = 2.0, double roundPrecision = 0.25, double shortestEdgeLength = 0.) :
+    MiterLimit(miterLimit), ArcTolerance(roundPrecision), ShortestEdgeLength(shortestEdgeLength), m_lowest(-1, 0) {}
+  ~ClipperOffset() { Clear(); }
+  void AddPath(const Path& path, JoinType joinType, EndType endType);
+  template<typename PathsProvider>
+  void AddPaths(PathsProvider &&paths, JoinType joinType, EndType endType) {
+    for (const Path &path : paths)
+      AddPath(path, joinType, endType);
+  }
+  void Execute(Paths& solution, double delta);
+  void Execute(PolyTree& solution, double delta);
+  void Clear();
+  double MiterLimit;
+  double ArcTolerance;
+  double ShortestEdgeLength;
+
+private:
+  Paths m_destPolys;
+  Path m_srcPoly;
+  Path m_destPoly;
+  std::vector<DoublePoint, Allocator<DoublePoint>> m_normals;
+  double m_delta, m_sinA, m_sin, m_cos;
+  double m_miterLim, m_StepsPerRad;
+  // x: index of the lowest contour in m_polyNodes
+  // y: index of the lowest point in the lowest contour
+  IntPoint m_lowest;
+  PolyNode m_polyNodes;
+
+  void FixOrientations();
+  void DoOffset(double delta);
+  void OffsetPoint(int j, int& k, JoinType jointype);
+  void DoSquare(int j, int k);
+  void DoMiter(int j, int k, double r);
+  void DoRound(int j, int k);
+};
+//------------------------------------------------------------------------------
+
+class clipperException : public std::exception
+{
+  public:
+    clipperException(const char* description): m_descr(description) {}
+    virtual ~clipperException() throw() {}
+    virtual const char* what() const throw() {return m_descr.c_str();}
+  private:
+    std::string m_descr;
+};
+//------------------------------------------------------------------------------
+
+// Union with "strictly simple" fix enabled.
+template<typename PathsProvider>
+inline Paths SimplifyPolygons(PathsProvider &&in_polys, PolyFillType fillType = pftNonZero, bool strictly_simple = true) {
+    Clipper c;
+    c.StrictlySimple(strictly_simple);
+    c.AddPaths(std::forward<PathsProvider>(in_polys), ptSubject, true);
+    Paths out;
+    c.Execute(ctUnion, out, fillType, fillType);
+    return out;
+}
+
+} //ClipperLib namespace
+
+#ifdef CLIPPERLIB_NAMESPACE_PREFIX
+} // namespace CLIPPERLIB_NAMESPACE_PREFIX
+#endif // CLIPPERLIB_NAMESPACE_PREFIX
+
+#endif //clipper_hpp

deps_src/clipper/clipper_z.cpp

@@ -0,0 +1,7 @@
+// Hackish wrapper around the ClipperLib library to compile the Clipper library with the Z support.
+
+// Enable the Z coordinate support.
+#define CLIPPERLIB_USE_XYZ
+
+// and let it compile
+#include "clipper.cpp"

deps_src/clipper/clipper_z.hpp

@@ -0,0 +1,18 @@
+// Hackish wrapper around the ClipperLib library to compile the Clipper library with the Z support.
+
+#ifndef clipper_z_hpp
+#ifdef clipper_hpp
+#error "You should include clipper_z.hpp before clipper.hpp"
+#endif
+
+#define clipper_z_hpp
+
+// Enable the Z coordinate support.
+#define CLIPPERLIB_USE_XYZ
+
+#include "clipper.hpp"
+
+#undef clipper_hpp
+#undef CLIPPERLIB_USE_XYZ
+
+#endif // clipper_z_hpp

deps_src/eigen/CMakeLists.txt

@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.13)
+project(eigen)
+
+add_library(eigen INTERFACE)
+
+target_include_directories(eigen INTERFACE
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+# Eigen is header-only, so we only need to specify the include directory
+# The headers are in the Eigen/ subdirectory structure

deps_src/eigen/COPYING.README

@@ -0,0 +1,18 @@
+Eigen is primarily MPL2 licensed. See COPYING.MPL2 and these links:
+  http://www.mozilla.org/MPL/2.0/
+  http://www.mozilla.org/MPL/2.0/FAQ.html
+
+Some files contain third-party code under BSD or LGPL licenses, whence the other
+COPYING.* files here.
+
+All the LGPL code is either LGPL 2.1-only, or LGPL 2.1-or-later.
+For this reason, the COPYING.LGPL file contains the LGPL 2.1 text.
+
+If you want to guarantee that the Eigen code that you are #including is licensed
+under the MPL2 and possibly more permissive licenses (like BSD), #define this
+preprocessor symbol:
+  EIGEN_MPL2_ONLY
+For example, with most compilers, you could add this to your project CXXFLAGS:
+  -DEIGEN_MPL2_ONLY
+This will cause a compilation error to be generated if you #include any code that is
+LGPL licensed.

deps_src/eigen/Eigen/CMakeLists.txt

@@ -0,0 +1,19 @@
+include(RegexUtils)
+test_escape_string_as_regex()
+
+file(GLOB Eigen_directory_files "*")
+
+escape_string_as_regex(ESCAPED_CMAKE_CURRENT_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
+
+foreach(f ${Eigen_directory_files})
+  if(NOT f MATCHES "\\.txt" AND NOT f MATCHES "${ESCAPED_CMAKE_CURRENT_SOURCE_DIR}/[.].+" AND NOT f MATCHES "${ESCAPED_CMAKE_CURRENT_SOURCE_DIR}/src")
+    list(APPEND Eigen_directory_files_to_install ${f})
+  endif()
+endforeach(f ${Eigen_directory_files})
+
+install(FILES
+  ${Eigen_directory_files_to_install}
+  DESTINATION ${INCLUDE_INSTALL_DIR}/Eigen COMPONENT Devel
+  )
+
+install(DIRECTORY src DESTINATION ${INCLUDE_INSTALL_DIR}/Eigen COMPONENT Devel FILES_MATCHING PATTERN "*.h")

deps_src/eigen/Eigen/Cholesky

@@ -0,0 +1,46 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_CHOLESKY_MODULE_H
+#define EIGEN_CHOLESKY_MODULE_H
+
+#include "Core"
+#include "Jacobi"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+/** \defgroup Cholesky_Module Cholesky module
+  *
+  *
+  *
+  * This module provides two variants of the Cholesky decomposition for selfadjoint (hermitian) matrices.
+  * Those decompositions are also accessible via the following methods:
+  *  - MatrixBase::llt()
+  *  - MatrixBase::ldlt()
+  *  - SelfAdjointView::llt()
+  *  - SelfAdjointView::ldlt()
+  *
+  * \code
+  * #include <Eigen/Cholesky>
+  * \endcode
+  */
+
+#include "src/Cholesky/LLT.h"
+#include "src/Cholesky/LDLT.h"
+#ifdef EIGEN_USE_LAPACKE
+#ifdef EIGEN_USE_MKL
+#include "mkl_lapacke.h"
+#else
+#include "src/misc/lapacke.h"
+#endif
+#include "src/Cholesky/LLT_LAPACKE.h"
+#endif
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_CHOLESKY_MODULE_H
+/* vim: set filetype=cpp et sw=2 ts=2 ai: */

deps_src/eigen/Eigen/CholmodSupport

@@ -0,0 +1,48 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_CHOLMODSUPPORT_MODULE_H
+#define EIGEN_CHOLMODSUPPORT_MODULE_H
+
+#include "SparseCore"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+extern "C" {
+  #include <cholmod.h>
+}
+
+/** \ingroup Support_modules
+  * \defgroup CholmodSupport_Module CholmodSupport module
+  *
+  * This module provides an interface to the Cholmod library which is part of the <a href="http://www.suitesparse.com">suitesparse</a> package.
+  * It provides the two following main factorization classes:
+  * - class CholmodSupernodalLLT: a supernodal LLT Cholesky factorization.
+  * - class CholmodDecomposiiton: a general L(D)LT Cholesky factorization with automatic or explicit runtime selection of the underlying factorization method (supernodal or simplicial).
+  *
+  * For the sake of completeness, this module also propose the two following classes:
+  * - class CholmodSimplicialLLT
+  * - class CholmodSimplicialLDLT
+  * Note that these classes does not bring any particular advantage compared to the built-in
+  * SimplicialLLT and SimplicialLDLT factorization classes.
+  *
+  * \code
+  * #include <Eigen/CholmodSupport>
+  * \endcode
+  *
+  * In order to use this module, the cholmod headers must be accessible from the include paths, and your binary must be linked to the cholmod library and its dependencies.
+  * The dependencies depend on how cholmod has been compiled.
+  * For a cmake based project, you can use our FindCholmod.cmake module to help you in this task.
+  *
+  */
+
+#include "src/CholmodSupport/CholmodSupport.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_CHOLMODSUPPORT_MODULE_H
+

deps_src/eigen/Eigen/Core

@@ -0,0 +1,537 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
+// Copyright (C) 2007-2011 Benoit Jacob <jacob.benoit.1@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_CORE_H
+#define EIGEN_CORE_H
+
+// first thing Eigen does: stop the compiler from committing suicide
+#include "src/Core/util/DisableStupidWarnings.h"
+
+#if defined(__CUDACC__) && !defined(EIGEN_NO_CUDA)
+  #define EIGEN_CUDACC __CUDACC__
+#endif
+
+#if defined(__CUDA_ARCH__) && !defined(EIGEN_NO_CUDA)
+  #define EIGEN_CUDA_ARCH __CUDA_ARCH__
+#endif
+
+#if defined(__CUDACC_VER_MAJOR__) && (__CUDACC_VER_MAJOR__ >= 9)
+#define EIGEN_CUDACC_VER  ((__CUDACC_VER_MAJOR__ * 10000) + (__CUDACC_VER_MINOR__ * 100))
+#elif defined(__CUDACC_VER__)
+#define EIGEN_CUDACC_VER __CUDACC_VER__
+#else
+#define EIGEN_CUDACC_VER 0
+#endif
+
+// Handle NVCC/CUDA/SYCL
+#if defined(__CUDACC__) || defined(__SYCL_DEVICE_ONLY__)
+  // Do not try asserts on CUDA and SYCL!
+  #ifndef EIGEN_NO_DEBUG
+  #define EIGEN_NO_DEBUG
+  #endif
+
+  #ifdef EIGEN_INTERNAL_DEBUGGING
+  #undef EIGEN_INTERNAL_DEBUGGING
+  #endif
+
+  #ifdef EIGEN_EXCEPTIONS
+  #undef EIGEN_EXCEPTIONS
+  #endif
+
+  // All functions callable from CUDA code must be qualified with __device__
+  #ifdef __CUDACC__
+    // Do not try to vectorize on CUDA and SYCL!
+    #ifndef EIGEN_DONT_VECTORIZE
+    #define EIGEN_DONT_VECTORIZE
+    #endif
+
+    #define EIGEN_DEVICE_FUNC __host__ __device__
+    // We need cuda_runtime.h to ensure that that EIGEN_USING_STD_MATH macro
+    // works properly on the device side
+    #include <cuda_runtime.h>
+  #else
+    #define EIGEN_DEVICE_FUNC
+  #endif
+
+#else
+  #define EIGEN_DEVICE_FUNC
+
+#endif
+
+// When compiling CUDA device code with NVCC, pull in math functions from the
+// global namespace.  In host mode, and when device doee with clang, use the
+// std versions.
+#if defined(__CUDA_ARCH__) && defined(__NVCC__)
+  #define EIGEN_USING_STD_MATH(FUNC) using ::FUNC;
+#else
+  #define EIGEN_USING_STD_MATH(FUNC) using std::FUNC;
+#endif
+
+#if (defined(_CPPUNWIND) || defined(__EXCEPTIONS)) && !defined(__CUDA_ARCH__) && !defined(EIGEN_EXCEPTIONS) && !defined(EIGEN_USE_SYCL)
+  #define EIGEN_EXCEPTIONS
+#endif
+
+#ifdef EIGEN_EXCEPTIONS
+  #include <new>
+#endif
+
+// then include this file where all our macros are defined. It's really important to do it first because
+// it's where we do all the alignment settings (platform detection and honoring the user's will if he
+// defined e.g. EIGEN_DONT_ALIGN) so it needs to be done before we do anything with vectorization.
+#include "src/Core/util/Macros.h"
+
+// Disable the ipa-cp-clone optimization flag with MinGW 6.x or newer (enabled by default with -O3)
+// See http://eigen.tuxfamily.org/bz/show_bug.cgi?id=556 for details.
+#if EIGEN_COMP_MINGW && EIGEN_GNUC_AT_LEAST(4,6)
+  #pragma GCC optimize ("-fno-ipa-cp-clone")
+#endif
+
+#include <complex>
+
+// this include file manages BLAS and MKL related macros
+// and inclusion of their respective header files
+#include "src/Core/util/MKL_support.h"
+
+// if alignment is disabled, then disable vectorization. Note: EIGEN_MAX_ALIGN_BYTES is the proper check, it takes into
+// account both the user's will (EIGEN_MAX_ALIGN_BYTES,EIGEN_DONT_ALIGN) and our own platform checks
+#if EIGEN_MAX_ALIGN_BYTES==0
+  #ifndef EIGEN_DONT_VECTORIZE
+    #define EIGEN_DONT_VECTORIZE
+  #endif
+#endif
+
+#if EIGEN_COMP_MSVC
+  #include <malloc.h> // for _aligned_malloc -- need it regardless of whether vectorization is enabled
+  #if (EIGEN_COMP_MSVC >= 1500) // 2008 or later
+    // Remember that usage of defined() in a #define is undefined by the standard.
+    // a user reported that in 64-bit mode, MSVC doesn't care to define _M_IX86_FP.
+    #if (defined(_M_IX86_FP) && (_M_IX86_FP >= 2)) || EIGEN_ARCH_x86_64
+      #define EIGEN_SSE2_ON_MSVC_2008_OR_LATER
+    #endif
+  #endif
+#else
+  // Remember that usage of defined() in a #define is undefined by the standard
+  #if (defined __SSE2__) && ( (!EIGEN_COMP_GNUC) || EIGEN_COMP_ICC || EIGEN_GNUC_AT_LEAST(4,2) )
+    #define EIGEN_SSE2_ON_NON_MSVC_BUT_NOT_OLD_GCC
+  #endif
+#endif
+
+#ifndef EIGEN_DONT_VECTORIZE
+
+  #if defined (EIGEN_SSE2_ON_NON_MSVC_BUT_NOT_OLD_GCC) || defined(EIGEN_SSE2_ON_MSVC_2008_OR_LATER)
+
+    // Defines symbols for compile-time detection of which instructions are
+    // used.
+    // EIGEN_VECTORIZE_YY is defined if and only if the instruction set YY is used
+    #define EIGEN_VECTORIZE
+    #define EIGEN_VECTORIZE_SSE
+    #define EIGEN_VECTORIZE_SSE2
+
+    // Detect sse3/ssse3/sse4:
+    // gcc and icc defines __SSE3__, ...
+    // there is no way to know about this on msvc. You can define EIGEN_VECTORIZE_SSE* if you
+    // want to force the use of those instructions with msvc.
+    #ifdef __SSE3__
+      #define EIGEN_VECTORIZE_SSE3
+    #endif
+    #ifdef __SSSE3__
+      #define EIGEN_VECTORIZE_SSSE3
+    #endif
+    #ifdef __SSE4_1__
+      #define EIGEN_VECTORIZE_SSE4_1
+    #endif
+    #ifdef __SSE4_2__
+      #define EIGEN_VECTORIZE_SSE4_2
+    #endif
+    #ifdef __AVX__
+      #define EIGEN_VECTORIZE_AVX
+      #define EIGEN_VECTORIZE_SSE3
+      #define EIGEN_VECTORIZE_SSSE3
+      #define EIGEN_VECTORIZE_SSE4_1
+      #define EIGEN_VECTORIZE_SSE4_2
+    #endif
+    #ifdef __AVX2__
+      #define EIGEN_VECTORIZE_AVX2
+    #endif
+    #ifdef __FMA__
+      #define EIGEN_VECTORIZE_FMA
+    #endif
+    #if defined(__AVX512F__) && defined(EIGEN_ENABLE_AVX512)
+      #define EIGEN_VECTORIZE_AVX512
+      #define EIGEN_VECTORIZE_AVX2
+      #define EIGEN_VECTORIZE_AVX
+      #define EIGEN_VECTORIZE_FMA
+      #ifdef __AVX512DQ__
+        #define EIGEN_VECTORIZE_AVX512DQ
+      #endif
+      #ifdef __AVX512ER__
+        #define EIGEN_VECTORIZE_AVX512ER
+      #endif
+    #endif
+
+    // include files
+
+    // This extern "C" works around a MINGW-w64 compilation issue
+    // https://sourceforge.net/tracker/index.php?func=detail&aid=3018394&group_id=202880&atid=983354
+    // In essence, intrin.h is included by windows.h and also declares intrinsics (just as emmintrin.h etc. below do).
+    // However, intrin.h uses an extern "C" declaration, and g++ thus complains of duplicate declarations
+    // with conflicting linkage.  The linkage for intrinsics doesn't matter, but at that stage the compiler doesn't know;
+    // so, to avoid compile errors when windows.h is included after Eigen/Core, ensure intrinsics are extern "C" here too.
+    // notice that since these are C headers, the extern "C" is theoretically needed anyways.
+    extern "C" {
+      // In theory we should only include immintrin.h and not the other *mmintrin.h header files directly.
+      // Doing so triggers some issues with ICC. However old gcc versions seems to not have this file, thus:
+      #if EIGEN_COMP_ICC >= 1110
+        #include <immintrin.h>
+      #else
+        #include <mmintrin.h>
+        #include <emmintrin.h>
+        #include <xmmintrin.h>
+        #ifdef  EIGEN_VECTORIZE_SSE3
+        #include <pmmintrin.h>
+        #endif
+        #ifdef EIGEN_VECTORIZE_SSSE3
+        #include <tmmintrin.h>
+        #endif
+        #ifdef EIGEN_VECTORIZE_SSE4_1
+        #include <smmintrin.h>
+        #endif
+        #ifdef EIGEN_VECTORIZE_SSE4_2
+        #include <nmmintrin.h>
+        #endif
+        #if defined(EIGEN_VECTORIZE_AVX) || defined(EIGEN_VECTORIZE_AVX512)
+        #include <immintrin.h>
+        #endif
+      #endif
+    } // end extern "C"
+  #elif defined __VSX__
+    #define EIGEN_VECTORIZE
+    #define EIGEN_VECTORIZE_VSX
+    #include <altivec.h>
+    // We need to #undef all these ugly tokens defined in <altivec.h>
+    // => use __vector instead of vector
+    #undef bool
+    #undef vector
+    #undef pixel
+  #elif defined __ALTIVEC__
+    #define EIGEN_VECTORIZE
+    #define EIGEN_VECTORIZE_ALTIVEC
+    #include <altivec.h>
+    // We need to #undef all these ugly tokens defined in <altivec.h>
+    // => use __vector instead of vector
+    #undef bool
+    #undef vector
+    #undef pixel
+  #elif (defined  __ARM_NEON) || (defined __ARM_NEON__)
+    #define EIGEN_VECTORIZE
+    #define EIGEN_VECTORIZE_NEON
+    #include <arm_neon.h>
+  #elif (defined __s390x__ && defined __VEC__)
+    #define EIGEN_VECTORIZE
+    #define EIGEN_VECTORIZE_ZVECTOR
+    #include <vecintrin.h>
+  #endif
+#endif
+
+#if defined(__F16C__) && !defined(EIGEN_COMP_CLANG)
+  // We can use the optimized fp16 to float and float to fp16 conversion routines
+  #define EIGEN_HAS_FP16_C
+#endif
+
+#if defined __CUDACC__
+  #define EIGEN_VECTORIZE_CUDA
+  #include <vector_types.h>
+  #if EIGEN_CUDACC_VER >= 70500
+    #define EIGEN_HAS_CUDA_FP16
+  #endif
+#endif
+
+#if defined EIGEN_HAS_CUDA_FP16
+  #include <host_defines.h>
+  #include <cuda_fp16.h>
+#endif
+
+#if (defined _OPENMP) && (!defined EIGEN_DONT_PARALLELIZE)
+  #define EIGEN_HAS_OPENMP
+#endif
+
+#ifdef EIGEN_HAS_OPENMP
+#include <omp.h>
+#endif
+
+// MSVC for windows mobile does not have the errno.h file
+#if !(EIGEN_COMP_MSVC && EIGEN_OS_WINCE) && !EIGEN_COMP_ARM
+#define EIGEN_HAS_ERRNO
+#endif
+
+#ifdef EIGEN_HAS_ERRNO
+#include <cerrno>
+#endif
+#include <cstddef>
+#include <cstdlib>
+#include <cmath>
+#include <cassert>
+#include <functional>
+#include <iosfwd>
+#include <cstring>
+#include <string>
+#include <limits>
+#include <climits> // for CHAR_BIT
+// for min/max:
+#include <algorithm>
+
+// for std::is_nothrow_move_assignable
+#ifdef EIGEN_INCLUDE_TYPE_TRAITS
+#include <type_traits>
+#endif
+
+// for outputting debug info
+#ifdef EIGEN_DEBUG_ASSIGN
+#include <iostream>
+#endif
+
+// required for __cpuid, needs to be included after cmath
+#if EIGEN_COMP_MSVC && EIGEN_ARCH_i386_OR_x86_64 && !EIGEN_OS_WINCE
+  #include <intrin.h>
+#endif
+
+/** \brief Namespace containing all symbols from the %Eigen library. */
+namespace Eigen {
+
+inline static const char *SimdInstructionSetsInUse(void) {
+#if defined(EIGEN_VECTORIZE_AVX512)
+  return "AVX512, FMA, AVX2, AVX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2";
+#elif defined(EIGEN_VECTORIZE_AVX)
+  return "AVX SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2";
+#elif defined(EIGEN_VECTORIZE_SSE4_2)
+  return "SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2";
+#elif defined(EIGEN_VECTORIZE_SSE4_1)
+  return "SSE, SSE2, SSE3, SSSE3, SSE4.1";
+#elif defined(EIGEN_VECTORIZE_SSSE3)
+  return "SSE, SSE2, SSE3, SSSE3";
+#elif defined(EIGEN_VECTORIZE_SSE3)
+  return "SSE, SSE2, SSE3";
+#elif defined(EIGEN_VECTORIZE_SSE2)
+  return "SSE, SSE2";
+#elif defined(EIGEN_VECTORIZE_ALTIVEC)
+  return "AltiVec";
+#elif defined(EIGEN_VECTORIZE_VSX)
+  return "VSX";
+#elif defined(EIGEN_VECTORIZE_NEON)
+  return "ARM NEON";
+#elif defined(EIGEN_VECTORIZE_ZVECTOR)
+  return "S390X ZVECTOR";
+#else
+  return "None";
+#endif
+}
+
+} // end namespace Eigen
+
+#if defined EIGEN2_SUPPORT_STAGE40_FULL_EIGEN3_STRICTNESS || defined EIGEN2_SUPPORT_STAGE30_FULL_EIGEN3_API || defined EIGEN2_SUPPORT_STAGE20_RESOLVE_API_CONFLICTS || defined EIGEN2_SUPPORT_STAGE10_FULL_EIGEN2_API || defined EIGEN2_SUPPORT
+// This will generate an error message:
+#error Eigen2-support is only available up to version 3.2. Please go to "http://eigen.tuxfamily.org/index.php?title=Eigen2" for further information
+#endif
+
+namespace Eigen {
+
+// we use size_t frequently and we'll never remember to prepend it with std:: everytime just to
+// ensure QNX/QCC support
+using std::size_t;
+// gcc 4.6.0 wants std:: for ptrdiff_t
+using std::ptrdiff_t;
+
+}
+
+/** \defgroup Core_Module Core module
+  * This is the main module of Eigen providing dense matrix and vector support
+  * (both fixed and dynamic size) with all the features corresponding to a BLAS library
+  * and much more...
+  *
+  * \code
+  * #include <Eigen/Core>
+  * \endcode
+  */
+
+#include "src/Core/util/Constants.h"
+#include "src/Core/util/Meta.h"
+#include "src/Core/util/ForwardDeclarations.h"
+#include "src/Core/util/StaticAssert.h"
+#include "src/Core/util/XprHelper.h"
+#include "src/Core/util/Memory.h"
+
+#include "src/Core/NumTraits.h"
+#include "src/Core/MathFunctions.h"
+#include "src/Core/GenericPacketMath.h"
+#include "src/Core/MathFunctionsImpl.h"
+#include "src/Core/arch/Default/ConjHelper.h"
+
+#if defined EIGEN_VECTORIZE_AVX512
+  #include "src/Core/arch/SSE/PacketMath.h"
+  #include "src/Core/arch/AVX/PacketMath.h"
+  #include "src/Core/arch/AVX512/PacketMath.h"
+  #include "src/Core/arch/AVX512/MathFunctions.h"
+#elif defined EIGEN_VECTORIZE_AVX
+  // Use AVX for floats and doubles, SSE for integers
+  #include "src/Core/arch/SSE/PacketMath.h"
+  #include "src/Core/arch/SSE/Complex.h"
+  #include "src/Core/arch/SSE/MathFunctions.h"
+  #include "src/Core/arch/AVX/PacketMath.h"
+  #include "src/Core/arch/AVX/MathFunctions.h"
+  #include "src/Core/arch/AVX/Complex.h"
+  #include "src/Core/arch/AVX/TypeCasting.h"
+  #include "src/Core/arch/SSE/TypeCasting.h"
+#elif defined EIGEN_VECTORIZE_SSE
+  #include "src/Core/arch/SSE/PacketMath.h"
+  #include "src/Core/arch/SSE/MathFunctions.h"
+  #include "src/Core/arch/SSE/Complex.h"
+  #include "src/Core/arch/SSE/TypeCasting.h"
+#elif defined(EIGEN_VECTORIZE_ALTIVEC) || defined(EIGEN_VECTORIZE_VSX)
+  #include "src/Core/arch/AltiVec/PacketMath.h"
+  #include "src/Core/arch/AltiVec/MathFunctions.h"
+  #include "src/Core/arch/AltiVec/Complex.h"
+#elif defined EIGEN_VECTORIZE_NEON
+  #include "src/Core/arch/NEON/PacketMath.h"
+  #include "src/Core/arch/NEON/MathFunctions.h"
+  #include "src/Core/arch/NEON/Complex.h"
+#elif defined EIGEN_VECTORIZE_ZVECTOR
+  #include "src/Core/arch/ZVector/PacketMath.h"
+  #include "src/Core/arch/ZVector/MathFunctions.h"
+  #include "src/Core/arch/ZVector/Complex.h"
+#endif
+
+// Half float support
+#include "src/Core/arch/CUDA/Half.h"
+#include "src/Core/arch/CUDA/PacketMathHalf.h"
+#include "src/Core/arch/CUDA/TypeCasting.h"
+
+#if defined EIGEN_VECTORIZE_CUDA
+  #include "src/Core/arch/CUDA/PacketMath.h"
+  #include "src/Core/arch/CUDA/MathFunctions.h"
+#endif
+
+#include "src/Core/arch/Default/Settings.h"
+
+#include "src/Core/functors/TernaryFunctors.h"
+#include "src/Core/functors/BinaryFunctors.h"
+#include "src/Core/functors/UnaryFunctors.h"
+#include "src/Core/functors/NullaryFunctors.h"
+#include "src/Core/functors/StlFunctors.h"
+#include "src/Core/functors/AssignmentFunctors.h"
+
+// Specialized functors to enable the processing of complex numbers
+// on CUDA devices
+#include "src/Core/arch/CUDA/Complex.h"
+
+#include "src/Core/IO.h"
+#include "src/Core/DenseCoeffsBase.h"
+#include "src/Core/DenseBase.h"
+#include "src/Core/MatrixBase.h"
+#include "src/Core/EigenBase.h"
+
+#include "src/Core/Product.h"
+#include "src/Core/CoreEvaluators.h"
+#include "src/Core/AssignEvaluator.h"
+
+#ifndef EIGEN_PARSED_BY_DOXYGEN // work around Doxygen bug triggered by Assign.h r814874
+                                // at least confirmed with Doxygen 1.5.5 and 1.5.6
+  #include "src/Core/Assign.h"
+#endif
+
+#include "src/Core/ArrayBase.h"
+#include "src/Core/util/BlasUtil.h"
+#include "src/Core/DenseStorage.h"
+#include "src/Core/NestByValue.h"
+
+// #include "src/Core/ForceAlignedAccess.h"
+
+#include "src/Core/ReturnByValue.h"
+#include "src/Core/NoAlias.h"
+#include "src/Core/PlainObjectBase.h"
+#include "src/Core/Matrix.h"
+#include "src/Core/Array.h"
+#include "src/Core/CwiseTernaryOp.h"
+#include "src/Core/CwiseBinaryOp.h"
+#include "src/Core/CwiseUnaryOp.h"
+#include "src/Core/CwiseNullaryOp.h"
+#include "src/Core/CwiseUnaryView.h"
+#include "src/Core/SelfCwiseBinaryOp.h"
+#include "src/Core/Dot.h"
+#include "src/Core/StableNorm.h"
+#include "src/Core/Stride.h"
+#include "src/Core/MapBase.h"
+#include "src/Core/Map.h"
+#include "src/Core/Ref.h"
+#include "src/Core/Block.h"
+#include "src/Core/VectorBlock.h"
+#include "src/Core/Transpose.h"
+#include "src/Core/DiagonalMatrix.h"
+#include "src/Core/Diagonal.h"
+#include "src/Core/DiagonalProduct.h"
+#include "src/Core/Redux.h"
+#include "src/Core/Visitor.h"
+#include "src/Core/Fuzzy.h"
+#include "src/Core/Swap.h"
+#include "src/Core/CommaInitializer.h"
+#include "src/Core/GeneralProduct.h"
+#include "src/Core/Solve.h"
+#include "src/Core/Inverse.h"
+#include "src/Core/SolverBase.h"
+#include "src/Core/PermutationMatrix.h"
+#include "src/Core/Transpositions.h"
+#include "src/Core/TriangularMatrix.h"
+#include "src/Core/SelfAdjointView.h"
+#include "src/Core/products/GeneralBlockPanelKernel.h"
+#include "src/Core/products/Parallelizer.h"
+#include "src/Core/ProductEvaluators.h"
+#include "src/Core/products/GeneralMatrixVector.h"
+#include "src/Core/products/GeneralMatrixMatrix.h"
+#include "src/Core/SolveTriangular.h"
+#include "src/Core/products/GeneralMatrixMatrixTriangular.h"
+#include "src/Core/products/SelfadjointMatrixVector.h"
+#include "src/Core/products/SelfadjointMatrixMatrix.h"
+#include "src/Core/products/SelfadjointProduct.h"
+#include "src/Core/products/SelfadjointRank2Update.h"
+#include "src/Core/products/TriangularMatrixVector.h"
+#include "src/Core/products/TriangularMatrixMatrix.h"
+#include "src/Core/products/TriangularSolverMatrix.h"
+#include "src/Core/products/TriangularSolverVector.h"
+#include "src/Core/BandMatrix.h"
+#include "src/Core/CoreIterators.h"
+#include "src/Core/ConditionEstimator.h"
+
+#include "src/Core/BooleanRedux.h"
+#include "src/Core/Select.h"
+#include "src/Core/VectorwiseOp.h"
+#include "src/Core/Random.h"
+#include "src/Core/Replicate.h"
+#include "src/Core/Reverse.h"
+#include "src/Core/ArrayWrapper.h"
+
+#ifdef EIGEN_USE_BLAS
+#include "src/Core/products/GeneralMatrixMatrix_BLAS.h"
+#include "src/Core/products/GeneralMatrixVector_BLAS.h"
+#include "src/Core/products/GeneralMatrixMatrixTriangular_BLAS.h"
+#include "src/Core/products/SelfadjointMatrixMatrix_BLAS.h"
+#include "src/Core/products/SelfadjointMatrixVector_BLAS.h"
+#include "src/Core/products/TriangularMatrixMatrix_BLAS.h"
+#include "src/Core/products/TriangularMatrixVector_BLAS.h"
+#include "src/Core/products/TriangularSolverMatrix_BLAS.h"
+#endif // EIGEN_USE_BLAS
+
+#ifdef EIGEN_USE_MKL_VML
+#include "src/Core/Assign_MKL.h"
+#endif
+
+#include "src/Core/GlobalFunctions.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_CORE_H

deps_src/eigen/Eigen/Dense

@@ -0,0 +1,7 @@
+#include "Core"
+#include "LU"
+#include "Cholesky"
+#include "QR"
+#include "SVD"
+#include "Geometry"
+#include "Eigenvalues"

deps_src/eigen/Eigen/Eigen

@@ -0,0 +1,2 @@
+#include "Dense"
+#include "Sparse"

deps_src/eigen/Eigen/Eigenvalues

@@ -0,0 +1,61 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_EIGENVALUES_MODULE_H
+#define EIGEN_EIGENVALUES_MODULE_H
+
+#include "Core"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+#include "Cholesky"
+#include "Jacobi"
+#include "Householder"
+#include "LU"
+#include "Geometry"
+
+/** \defgroup Eigenvalues_Module Eigenvalues module
+  *
+  *
+  *
+  * This module mainly provides various eigenvalue solvers.
+  * This module also provides some MatrixBase methods, including:
+  *  - MatrixBase::eigenvalues(),
+  *  - MatrixBase::operatorNorm()
+  *
+  * \code
+  * #include <Eigen/Eigenvalues>
+  * \endcode
+  */
+
+#include "src/misc/RealSvd2x2.h"
+#include "src/Eigenvalues/Tridiagonalization.h"
+#include "src/Eigenvalues/RealSchur.h"
+#include "src/Eigenvalues/EigenSolver.h"
+#include "src/Eigenvalues/SelfAdjointEigenSolver.h"
+#include "src/Eigenvalues/GeneralizedSelfAdjointEigenSolver.h"
+#include "src/Eigenvalues/HessenbergDecomposition.h"
+#include "src/Eigenvalues/ComplexSchur.h"
+#include "src/Eigenvalues/ComplexEigenSolver.h"
+#include "src/Eigenvalues/RealQZ.h"
+#include "src/Eigenvalues/GeneralizedEigenSolver.h"
+#include "src/Eigenvalues/MatrixBaseEigenvalues.h"
+#ifdef EIGEN_USE_LAPACKE
+#ifdef EIGEN_USE_MKL
+#include "mkl_lapacke.h"
+#else
+#include "src/misc/lapacke.h"
+#endif
+#include "src/Eigenvalues/RealSchur_LAPACKE.h"
+#include "src/Eigenvalues/ComplexSchur_LAPACKE.h"
+#include "src/Eigenvalues/SelfAdjointEigenSolver_LAPACKE.h"
+#endif
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_EIGENVALUES_MODULE_H
+/* vim: set filetype=cpp et sw=2 ts=2 ai: */

deps_src/eigen/Eigen/Geometry

@@ -0,0 +1,62 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_GEOMETRY_MODULE_H
+#define EIGEN_GEOMETRY_MODULE_H
+
+#include "Core"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+#include "SVD"
+#include "LU"
+#include <limits>
+
+/** \defgroup Geometry_Module Geometry module
+  *
+  * This module provides support for:
+  *  - fixed-size homogeneous transformations
+  *  - translation, scaling, 2D and 3D rotations
+  *  - \link Quaternion quaternions \endlink
+  *  - cross products (\ref MatrixBase::cross, \ref MatrixBase::cross3)
+  *  - orthognal vector generation (\ref MatrixBase::unitOrthogonal)
+  *  - some linear components: \link ParametrizedLine parametrized-lines \endlink and \link Hyperplane hyperplanes \endlink
+  *  - \link AlignedBox axis aligned bounding boxes \endlink
+  *  - \link umeyama least-square transformation fitting \endlink
+  *
+  * \code
+  * #include <Eigen/Geometry>
+  * \endcode
+  */
+
+#include "src/Geometry/OrthoMethods.h"
+#include "src/Geometry/EulerAngles.h"
+
+#include "src/Geometry/Homogeneous.h"
+#include "src/Geometry/RotationBase.h"
+#include "src/Geometry/Rotation2D.h"
+#include "src/Geometry/Quaternion.h"
+#include "src/Geometry/AngleAxis.h"
+#include "src/Geometry/Transform.h"
+#include "src/Geometry/Translation.h"
+#include "src/Geometry/Scaling.h"
+#include "src/Geometry/Hyperplane.h"
+#include "src/Geometry/ParametrizedLine.h"
+#include "src/Geometry/AlignedBox.h"
+#include "src/Geometry/Umeyama.h"
+
+// Use the SSE optimized version whenever possible. At the moment the
+// SSE version doesn't compile when AVX is enabled
+#if defined EIGEN_VECTORIZE_SSE && !defined EIGEN_VECTORIZE_AVX
+#include "src/Geometry/arch/Geometry_SSE.h"
+#endif
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_GEOMETRY_MODULE_H
+/* vim: set filetype=cpp et sw=2 ts=2 ai: */
+

deps_src/eigen/Eigen/Householder

@@ -0,0 +1,30 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_HOUSEHOLDER_MODULE_H
+#define EIGEN_HOUSEHOLDER_MODULE_H
+
+#include "Core"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+/** \defgroup Householder_Module Householder module
+  * This module provides Householder transformations.
+  *
+  * \code
+  * #include <Eigen/Householder>
+  * \endcode
+  */
+
+#include "src/Householder/Householder.h"
+#include "src/Householder/HouseholderSequence.h"
+#include "src/Householder/BlockHouseholder.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_HOUSEHOLDER_MODULE_H
+/* vim: set filetype=cpp et sw=2 ts=2 ai: */

deps_src/eigen/Eigen/IterativeLinearSolvers

@@ -0,0 +1,48 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_ITERATIVELINEARSOLVERS_MODULE_H
+#define EIGEN_ITERATIVELINEARSOLVERS_MODULE_H
+
+#include "SparseCore"
+#include "OrderingMethods"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+/** 
+  * \defgroup IterativeLinearSolvers_Module IterativeLinearSolvers module
+  *
+  * This module currently provides iterative methods to solve problems of the form \c A \c x = \c b, where \c A is a squared matrix, usually very large and sparse.
+  * Those solvers are accessible via the following classes:
+  *  - ConjugateGradient for selfadjoint (hermitian) matrices,
+  *  - LeastSquaresConjugateGradient for rectangular least-square problems,
+  *  - BiCGSTAB for general square matrices.
+  *
+  * These iterative solvers are associated with some preconditioners:
+  *  - IdentityPreconditioner - not really useful
+  *  - DiagonalPreconditioner - also called Jacobi preconditioner, work very well on diagonal dominant matrices.
+  *  - IncompleteLUT - incomplete LU factorization with dual thresholding
+  *
+  * Such problems can also be solved using the direct sparse decomposition modules: SparseCholesky, CholmodSupport, UmfPackSupport, SuperLUSupport.
+  *
+    \code
+    #include <Eigen/IterativeLinearSolvers>
+    \endcode
+  */
+
+#include "src/IterativeLinearSolvers/SolveWithGuess.h"
+#include "src/IterativeLinearSolvers/IterativeSolverBase.h"
+#include "src/IterativeLinearSolvers/BasicPreconditioners.h"
+#include "src/IterativeLinearSolvers/ConjugateGradient.h"
+#include "src/IterativeLinearSolvers/LeastSquareConjugateGradient.h"
+#include "src/IterativeLinearSolvers/BiCGSTAB.h"
+#include "src/IterativeLinearSolvers/IncompleteLUT.h"
+#include "src/IterativeLinearSolvers/IncompleteCholesky.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_ITERATIVELINEARSOLVERS_MODULE_H

deps_src/eigen/Eigen/Jacobi

@@ -0,0 +1,33 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_JACOBI_MODULE_H
+#define EIGEN_JACOBI_MODULE_H
+
+#include "Core"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+/** \defgroup Jacobi_Module Jacobi module
+  * This module provides Jacobi and Givens rotations.
+  *
+  * \code
+  * #include <Eigen/Jacobi>
+  * \endcode
+  *
+  * In addition to listed classes, it defines the two following MatrixBase methods to apply a Jacobi or Givens rotation:
+  *  - MatrixBase::applyOnTheLeft()
+  *  - MatrixBase::applyOnTheRight().
+  */
+
+#include "src/Jacobi/Jacobi.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_JACOBI_MODULE_H
+/* vim: set filetype=cpp et sw=2 ts=2 ai: */
+

deps_src/eigen/Eigen/LU

@@ -0,0 +1,50 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_LU_MODULE_H
+#define EIGEN_LU_MODULE_H
+
+#include "Core"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+/** \defgroup LU_Module LU module
+  * This module includes %LU decomposition and related notions such as matrix inversion and determinant.
+  * This module defines the following MatrixBase methods:
+  *  - MatrixBase::inverse()
+  *  - MatrixBase::determinant()
+  *
+  * \code
+  * #include <Eigen/LU>
+  * \endcode
+  */
+
+#include "src/misc/Kernel.h"
+#include "src/misc/Image.h"
+#include "src/LU/FullPivLU.h"
+#include "src/LU/PartialPivLU.h"
+#ifdef EIGEN_USE_LAPACKE
+#ifdef EIGEN_USE_MKL
+#include "mkl_lapacke.h"
+#else
+#include "src/misc/lapacke.h"
+#endif
+#include "src/LU/PartialPivLU_LAPACKE.h"
+#endif
+#include "src/LU/Determinant.h"
+#include "src/LU/InverseImpl.h"
+
+// Use the SSE optimized version whenever possible. At the moment the
+// SSE version doesn't compile when AVX is enabled
+#if defined EIGEN_VECTORIZE_SSE && !defined EIGEN_VECTORIZE_AVX
+  #include "src/LU/arch/Inverse_SSE.h"
+#endif
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_LU_MODULE_H
+/* vim: set filetype=cpp et sw=2 ts=2 ai: */

deps_src/eigen/Eigen/MetisSupport

@@ -0,0 +1,35 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_METISSUPPORT_MODULE_H
+#define EIGEN_METISSUPPORT_MODULE_H
+
+#include "SparseCore"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+extern "C" {
+#include <metis.h>
+}
+
+
+/** \ingroup Support_modules
+  * \defgroup MetisSupport_Module MetisSupport module
+  *
+  * \code
+  * #include <Eigen/MetisSupport>
+  * \endcode
+  * This module defines an interface to the METIS reordering package (http://glaros.dtc.umn.edu/gkhome/views/metis). 
+  * It can be used just as any other built-in method as explained in \link OrderingMethods_Module here. \endlink
+  */
+
+
+#include "src/MetisSupport/MetisSupport.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_METISSUPPORT_MODULE_H

deps_src/eigen/Eigen/OrderingMethods

@@ -0,0 +1,73 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_ORDERINGMETHODS_MODULE_H
+#define EIGEN_ORDERINGMETHODS_MODULE_H
+
+#include "SparseCore"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+/** 
+  * \defgroup OrderingMethods_Module OrderingMethods module
+  *
+  * This module is currently for internal use only
+  * 
+  * It defines various built-in and external ordering methods for sparse matrices. 
+  * They are typically used to reduce the number of elements during 
+  * the sparse matrix decomposition (LLT, LU, QR).
+  * Precisely, in a preprocessing step, a permutation matrix P is computed using 
+  * those ordering methods and applied to the columns of the matrix. 
+  * Using for instance the sparse Cholesky decomposition, it is expected that 
+  * the nonzeros elements in LLT(A*P) will be much smaller than that in LLT(A).
+  * 
+  * 
+  * Usage : 
+  * \code
+  * #include <Eigen/OrderingMethods>
+  * \endcode
+  * 
+  * A simple usage is as a template parameter in the sparse decomposition classes : 
+  * 
+  * \code 
+  * SparseLU<MatrixType, COLAMDOrdering<int> > solver;
+  * \endcode 
+  * 
+  * \code 
+  * SparseQR<MatrixType, COLAMDOrdering<int> > solver;
+  * \endcode
+  * 
+  * It is possible as well to call directly a particular ordering method for your own purpose, 
+  * \code 
+  * AMDOrdering<int> ordering;
+  * PermutationMatrix<Dynamic, Dynamic, int> perm;
+  * SparseMatrix<double> A; 
+  * //Fill the matrix ...
+  * 
+  * ordering(A, perm); // Call AMD
+  * \endcode
+  * 
+  * \note Some of these methods (like AMD or METIS), need the sparsity pattern 
+  * of the input matrix to be symmetric. When the matrix is structurally unsymmetric, 
+  * Eigen computes internally the pattern of \f$A^T*A\f$ before calling the method.
+  * If your matrix is already symmetric (at leat in structure), you can avoid that
+  * by calling the method with a SelfAdjointView type.
+  * 
+  * \code
+  *  // Call the ordering on the pattern of the lower triangular matrix A
+  * ordering(A.selfadjointView<Lower>(), perm);
+  * \endcode
+  */
+
+#ifndef EIGEN_MPL2_ONLY
+#include "src/OrderingMethods/Amd.h"
+#endif
+
+#include "src/OrderingMethods/Ordering.h"
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_ORDERINGMETHODS_MODULE_H

deps_src/eigen/Eigen/PaStiXSupport

@@ -0,0 +1,48 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_PASTIXSUPPORT_MODULE_H
+#define EIGEN_PASTIXSUPPORT_MODULE_H
+
+#include "SparseCore"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+extern "C" {
+#include <pastix_nompi.h>
+#include <pastix.h>
+}
+
+#ifdef complex
+#undef complex
+#endif
+
+/** \ingroup Support_modules
+  * \defgroup PaStiXSupport_Module PaStiXSupport module
+  * 
+  * This module provides an interface to the <a href="http://pastix.gforge.inria.fr/">PaSTiX</a> library.
+  * PaSTiX is a general \b supernodal, \b parallel and \b opensource sparse solver.
+  * It provides the two following main factorization classes:
+  * - class PastixLLT : a supernodal, parallel LLt Cholesky factorization.
+  * - class PastixLDLT: a supernodal, parallel LDLt Cholesky factorization.
+  * - class PastixLU : a supernodal, parallel LU factorization (optimized for a symmetric pattern).
+  * 
+  * \code
+  * #include <Eigen/PaStiXSupport>
+  * \endcode
+  *
+  * In order to use this module, the PaSTiX headers must be accessible from the include paths, and your binary must be linked to the PaSTiX library and its dependencies.
+  * The dependencies depend on how PaSTiX has been compiled.
+  * For a cmake based project, you can use our FindPaSTiX.cmake module to help you in this task.
+  *
+  */
+
+#include "src/PaStiXSupport/PaStiXSupport.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_PASTIXSUPPORT_MODULE_H

deps_src/eigen/Eigen/PardisoSupport

@@ -0,0 +1,35 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_PARDISOSUPPORT_MODULE_H
+#define EIGEN_PARDISOSUPPORT_MODULE_H
+
+#include "SparseCore"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+#include <mkl_pardiso.h>
+
+/** \ingroup Support_modules
+  * \defgroup PardisoSupport_Module PardisoSupport module
+  *
+  * This module brings support for the Intel(R) MKL PARDISO direct sparse solvers.
+  *
+  * \code
+  * #include <Eigen/PardisoSupport>
+  * \endcode
+  *
+  * In order to use this module, the MKL headers must be accessible from the include paths, and your binary must be linked to the MKL library and its dependencies.
+  * See this \ref TopicUsingIntelMKL "page" for more information on MKL-Eigen integration.
+  * 
+  */
+
+#include "src/PardisoSupport/PardisoSupport.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_PARDISOSUPPORT_MODULE_H

deps_src/eigen/Eigen/QR

@@ -0,0 +1,51 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_QR_MODULE_H
+#define EIGEN_QR_MODULE_H
+
+#include "Core"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+#include "Cholesky"
+#include "Jacobi"
+#include "Householder"
+
+/** \defgroup QR_Module QR module
+  *
+  *
+  *
+  * This module provides various QR decompositions
+  * This module also provides some MatrixBase methods, including:
+  *  - MatrixBase::householderQr()
+  *  - MatrixBase::colPivHouseholderQr()
+  *  - MatrixBase::fullPivHouseholderQr()
+  *
+  * \code
+  * #include <Eigen/QR>
+  * \endcode
+  */
+
+#include "src/QR/HouseholderQR.h"
+#include "src/QR/FullPivHouseholderQR.h"
+#include "src/QR/ColPivHouseholderQR.h"
+#include "src/QR/CompleteOrthogonalDecomposition.h"
+#ifdef EIGEN_USE_LAPACKE
+#ifdef EIGEN_USE_MKL
+#include "mkl_lapacke.h"
+#else
+#include "src/misc/lapacke.h"
+#endif
+#include "src/QR/HouseholderQR_LAPACKE.h"
+#include "src/QR/ColPivHouseholderQR_LAPACKE.h"
+#endif
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_QR_MODULE_H
+/* vim: set filetype=cpp et sw=2 ts=2 ai: */

deps_src/eigen/Eigen/QtAlignedMalloc

@@ -0,0 +1,40 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_QTMALLOC_MODULE_H
+#define EIGEN_QTMALLOC_MODULE_H
+
+#include "Core"
+
+#if (!EIGEN_MALLOC_ALREADY_ALIGNED)
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+void *qMalloc(std::size_t size)
+{
+  return Eigen::internal::aligned_malloc(size);
+}
+
+void qFree(void *ptr)
+{
+  Eigen::internal::aligned_free(ptr);
+}
+
+void *qRealloc(void *ptr, std::size_t size)
+{
+  void* newPtr = Eigen::internal::aligned_malloc(size);
+  std::memcpy(newPtr, ptr, size);
+  Eigen::internal::aligned_free(ptr);
+  return newPtr;
+}
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif
+
+#endif // EIGEN_QTMALLOC_MODULE_H
+/* vim: set filetype=cpp et sw=2 ts=2 ai: */

deps_src/eigen/Eigen/SPQRSupport

@@ -0,0 +1,34 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_SPQRSUPPORT_MODULE_H
+#define EIGEN_SPQRSUPPORT_MODULE_H
+
+#include "SparseCore"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+#include "SuiteSparseQR.hpp"
+
+/** \ingroup Support_modules
+  * \defgroup SPQRSupport_Module SuiteSparseQR module
+  * 
+  * This module provides an interface to the SPQR library, which is part of the <a href="http://www.suitesparse.com">suitesparse</a> package.
+  *
+  * \code
+  * #include <Eigen/SPQRSupport>
+  * \endcode
+  *
+  * In order to use this module, the SPQR headers must be accessible from the include paths, and your binary must be linked to the SPQR library and its dependencies (Cholmod, AMD, COLAMD,...).
+  * For a cmake based project, you can use our FindSPQR.cmake and FindCholmod.Cmake modules
+  *
+  */
+
+#include "src/CholmodSupport/CholmodSupport.h"
+#include "src/SPQRSupport/SuiteSparseQRSupport.h"
+
+#endif

deps_src/eigen/Eigen/SVD

@@ -0,0 +1,51 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_SVD_MODULE_H
+#define EIGEN_SVD_MODULE_H
+
+#include "QR"
+#include "Householder"
+#include "Jacobi"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+/** \defgroup SVD_Module SVD module
+  *
+  *
+  *
+  * This module provides SVD decomposition for matrices (both real and complex).
+  * Two decomposition algorithms are provided:
+  *  - JacobiSVD implementing two-sided Jacobi iterations is numerically very accurate, fast for small matrices, but very slow for larger ones.
+  *  - BDCSVD implementing a recursive divide & conquer strategy on top of an upper-bidiagonalization which remains fast for large problems.
+  * These decompositions are accessible via the respective classes and following MatrixBase methods:
+  *  - MatrixBase::jacobiSvd()
+  *  - MatrixBase::bdcSvd()
+  *
+  * \code
+  * #include <Eigen/SVD>
+  * \endcode
+  */
+
+#include "src/misc/RealSvd2x2.h"
+#include "src/SVD/UpperBidiagonalization.h"
+#include "src/SVD/SVDBase.h"
+#include "src/SVD/JacobiSVD.h"
+#include "src/SVD/BDCSVD.h"
+#if defined(EIGEN_USE_LAPACKE) && !defined(EIGEN_USE_LAPACKE_STRICT)
+#ifdef EIGEN_USE_MKL
+#include "mkl_lapacke.h"
+#else
+#include "src/misc/lapacke.h"
+#endif
+#include "src/SVD/JacobiSVD_LAPACKE.h"
+#endif
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_SVD_MODULE_H
+/* vim: set filetype=cpp et sw=2 ts=2 ai: */

deps_src/eigen/Eigen/Sparse

@@ -0,0 +1,36 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_SPARSE_MODULE_H
+#define EIGEN_SPARSE_MODULE_H
+
+/** \defgroup Sparse_Module Sparse meta-module
+  *
+  * Meta-module including all related modules:
+  * - \ref SparseCore_Module
+  * - \ref OrderingMethods_Module
+  * - \ref SparseCholesky_Module
+  * - \ref SparseLU_Module
+  * - \ref SparseQR_Module
+  * - \ref IterativeLinearSolvers_Module
+  *
+    \code
+    #include <Eigen/Sparse>
+    \endcode
+  */
+
+#include "SparseCore"
+#include "OrderingMethods"
+#ifndef EIGEN_MPL2_ONLY
+#include "SparseCholesky"
+#endif
+#include "SparseLU"
+#include "SparseQR"
+#include "IterativeLinearSolvers"
+
+#endif // EIGEN_SPARSE_MODULE_H
+

deps_src/eigen/Eigen/SparseCholesky

@@ -0,0 +1,45 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2008-2013 Gael Guennebaud <gael.guennebaud@inria.fr>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_SPARSECHOLESKY_MODULE_H
+#define EIGEN_SPARSECHOLESKY_MODULE_H
+
+#include "SparseCore"
+#include "OrderingMethods"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+/** 
+  * \defgroup SparseCholesky_Module SparseCholesky module
+  *
+  * This module currently provides two variants of the direct sparse Cholesky decomposition for selfadjoint (hermitian) matrices.
+  * Those decompositions are accessible via the following classes:
+  *  - SimplicialLLt,
+  *  - SimplicialLDLt
+  *
+  * Such problems can also be solved using the ConjugateGradient solver from the IterativeLinearSolvers module.
+  *
+  * \code
+  * #include <Eigen/SparseCholesky>
+  * \endcode
+  */
+
+#ifdef EIGEN_MPL2_ONLY
+#error The SparseCholesky module has nothing to offer in MPL2 only mode
+#endif
+
+#include "src/SparseCholesky/SimplicialCholesky.h"
+
+#ifndef EIGEN_MPL2_ONLY
+#include "src/SparseCholesky/SimplicialCholesky_impl.h"
+#endif
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_SPARSECHOLESKY_MODULE_H

deps_src/eigen/Eigen/SparseCore

@@ -0,0 +1,69 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_SPARSECORE_MODULE_H
+#define EIGEN_SPARSECORE_MODULE_H
+
+#include "Core"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+#include <vector>
+#include <map>
+#include <cstdlib>
+#include <cstring>
+#include <algorithm>
+
+/** 
+  * \defgroup SparseCore_Module SparseCore module
+  *
+  * This module provides a sparse matrix representation, and basic associated matrix manipulations
+  * and operations.
+  *
+  * See the \ref TutorialSparse "Sparse tutorial"
+  *
+  * \code
+  * #include <Eigen/SparseCore>
+  * \endcode
+  *
+  * This module depends on: Core.
+  */
+
+#include "src/SparseCore/SparseUtil.h"
+#include "src/SparseCore/SparseMatrixBase.h"
+#include "src/SparseCore/SparseAssign.h"
+#include "src/SparseCore/CompressedStorage.h"
+#include "src/SparseCore/AmbiVector.h"
+#include "src/SparseCore/SparseCompressedBase.h"
+#include "src/SparseCore/SparseMatrix.h"
+#include "src/SparseCore/SparseMap.h"
+#include "src/SparseCore/MappedSparseMatrix.h"
+#include "src/SparseCore/SparseVector.h"
+#include "src/SparseCore/SparseRef.h"
+#include "src/SparseCore/SparseCwiseUnaryOp.h"
+#include "src/SparseCore/SparseCwiseBinaryOp.h"
+#include "src/SparseCore/SparseTranspose.h"
+#include "src/SparseCore/SparseBlock.h"
+#include "src/SparseCore/SparseDot.h"
+#include "src/SparseCore/SparseRedux.h"
+#include "src/SparseCore/SparseView.h"
+#include "src/SparseCore/SparseDiagonalProduct.h"
+#include "src/SparseCore/ConservativeSparseSparseProduct.h"
+#include "src/SparseCore/SparseSparseProductWithPruning.h"
+#include "src/SparseCore/SparseProduct.h"
+#include "src/SparseCore/SparseDenseProduct.h"
+#include "src/SparseCore/SparseSelfAdjointView.h"
+#include "src/SparseCore/SparseTriangularView.h"
+#include "src/SparseCore/TriangularSolver.h"
+#include "src/SparseCore/SparsePermutation.h"
+#include "src/SparseCore/SparseFuzzy.h"
+#include "src/SparseCore/SparseSolverBase.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_SPARSECORE_MODULE_H
+

deps_src/eigen/Eigen/SparseLU

@@ -0,0 +1,46 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2012 Désiré Nuentsa-Wakam <desire.nuentsa_wakam@inria.fr>
+// Copyright (C) 2012 Gael Guennebaud <gael.guennebaud@inria.fr>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_SPARSELU_MODULE_H
+#define EIGEN_SPARSELU_MODULE_H
+
+#include "SparseCore"
+
+/** 
+  * \defgroup SparseLU_Module SparseLU module
+  * This module defines a supernodal factorization of general sparse matrices.
+  * The code is fully optimized for supernode-panel updates with specialized kernels.
+  * Please, see the documentation of the SparseLU class for more details.
+  */
+
+// Ordering interface
+#include "OrderingMethods"
+
+#include "src/SparseLU/SparseLU_gemm_kernel.h"
+
+#include "src/SparseLU/SparseLU_Structs.h"
+#include "src/SparseLU/SparseLU_SupernodalMatrix.h"
+#include "src/SparseLU/SparseLUImpl.h"
+#include "src/SparseCore/SparseColEtree.h"
+#include "src/SparseLU/SparseLU_Memory.h"
+#include "src/SparseLU/SparseLU_heap_relax_snode.h"
+#include "src/SparseLU/SparseLU_relax_snode.h"
+#include "src/SparseLU/SparseLU_pivotL.h"
+#include "src/SparseLU/SparseLU_panel_dfs.h"
+#include "src/SparseLU/SparseLU_kernel_bmod.h"
+#include "src/SparseLU/SparseLU_panel_bmod.h"
+#include "src/SparseLU/SparseLU_column_dfs.h"
+#include "src/SparseLU/SparseLU_column_bmod.h"
+#include "src/SparseLU/SparseLU_copy_to_ucol.h"
+#include "src/SparseLU/SparseLU_pruneL.h"
+#include "src/SparseLU/SparseLU_Utils.h"
+#include "src/SparseLU/SparseLU.h"
+
+#endif // EIGEN_SPARSELU_MODULE_H

deps_src/eigen/Eigen/SparseQR

@@ -0,0 +1,37 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_SPARSEQR_MODULE_H
+#define EIGEN_SPARSEQR_MODULE_H
+
+#include "SparseCore"
+#include "OrderingMethods"
+#include "src/Core/util/DisableStupidWarnings.h"
+
+/** \defgroup SparseQR_Module SparseQR module
+  * \brief Provides QR decomposition for sparse matrices
+  * 
+  * This module provides a simplicial version of the left-looking Sparse QR decomposition. 
+  * The columns of the input matrix should be reordered to limit the fill-in during the 
+  * decomposition. Built-in methods (COLAMD, AMD) or external  methods (METIS) can be used to this end.
+  * See the \link OrderingMethods_Module OrderingMethods\endlink module for the list 
+  * of built-in and external ordering methods.
+  * 
+  * \code
+  * #include <Eigen/SparseQR>
+  * \endcode
+  * 
+  * 
+  */
+
+#include "OrderingMethods"
+#include "src/SparseCore/SparseColEtree.h"
+#include "src/SparseQR/SparseQR.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif

deps_src/eigen/Eigen/StdDeque

@@ -0,0 +1,27 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2009 Gael Guennebaud <gael.guennebaud@inria.fr>
+// Copyright (C) 2009 Hauke Heibel <hauke.heibel@googlemail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_STDDEQUE_MODULE_H
+#define EIGEN_STDDEQUE_MODULE_H
+
+#include "Core"
+#include <deque>
+
+#if EIGEN_COMP_MSVC && EIGEN_OS_WIN64 && (EIGEN_MAX_STATIC_ALIGN_BYTES<=16) /* MSVC auto aligns up to 16 bytes in 64 bit builds */
+
+#define EIGEN_DEFINE_STL_DEQUE_SPECIALIZATION(...)
+
+#else
+
+#include "src/StlSupport/StdDeque.h"
+
+#endif
+
+#endif // EIGEN_STDDEQUE_MODULE_H

deps_src/eigen/Eigen/StdList

@@ -0,0 +1,26 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2009 Hauke Heibel <hauke.heibel@googlemail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_STDLIST_MODULE_H
+#define EIGEN_STDLIST_MODULE_H
+
+#include "Core"
+#include <list>
+
+#if EIGEN_COMP_MSVC && EIGEN_OS_WIN64 && (EIGEN_MAX_STATIC_ALIGN_BYTES<=16) /* MSVC auto aligns up to 16 bytes in 64 bit builds */
+
+#define EIGEN_DEFINE_STL_LIST_SPECIALIZATION(...)
+
+#else
+
+#include "src/StlSupport/StdList.h"
+
+#endif
+
+#endif // EIGEN_STDLIST_MODULE_H

deps_src/eigen/Eigen/StdVector

@@ -0,0 +1,27 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2009 Gael Guennebaud <gael.guennebaud@inria.fr>
+// Copyright (C) 2009 Hauke Heibel <hauke.heibel@googlemail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_STDVECTOR_MODULE_H
+#define EIGEN_STDVECTOR_MODULE_H
+
+#include "Core"
+#include <vector>
+
+#if EIGEN_COMP_MSVC && EIGEN_OS_WIN64 && (EIGEN_MAX_STATIC_ALIGN_BYTES<=16) /* MSVC auto aligns up to 16 bytes in 64 bit builds */
+
+#define EIGEN_DEFINE_STL_VECTOR_SPECIALIZATION(...)
+
+#else
+
+#include "src/StlSupport/StdVector.h"
+
+#endif
+
+#endif // EIGEN_STDVECTOR_MODULE_H

deps_src/eigen/Eigen/SuperLUSupport

@@ -0,0 +1,64 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_SUPERLUSUPPORT_MODULE_H
+#define EIGEN_SUPERLUSUPPORT_MODULE_H
+
+#include "SparseCore"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+#ifdef EMPTY
+#define EIGEN_EMPTY_WAS_ALREADY_DEFINED
+#endif
+
+typedef int int_t;
+#include <slu_Cnames.h>
+#include <supermatrix.h>
+#include <slu_util.h>
+
+// slu_util.h defines a preprocessor token named EMPTY which is really polluting,
+// so we remove it in favor of a SUPERLU_EMPTY token.
+// If EMPTY was already defined then we don't undef it.
+
+#if defined(EIGEN_EMPTY_WAS_ALREADY_DEFINED)
+# undef EIGEN_EMPTY_WAS_ALREADY_DEFINED
+#elif defined(EMPTY)
+# undef EMPTY
+#endif
+
+#define SUPERLU_EMPTY (-1)
+
+namespace Eigen { struct SluMatrix; }
+
+/** \ingroup Support_modules
+  * \defgroup SuperLUSupport_Module SuperLUSupport module
+  *
+  * This module provides an interface to the <a href="http://crd-legacy.lbl.gov/~xiaoye/SuperLU/">SuperLU</a> library.
+  * It provides the following factorization class:
+  * - class SuperLU: a supernodal sequential LU factorization.
+  * - class SuperILU: a supernodal sequential incomplete LU factorization (to be used as a preconditioner for iterative methods).
+  *
+  * \warning This wrapper requires at least versions 4.0 of SuperLU. The 3.x versions are not supported.
+  *
+  * \warning When including this module, you have to use SUPERLU_EMPTY instead of EMPTY which is no longer defined because it is too polluting.
+  *
+  * \code
+  * #include <Eigen/SuperLUSupport>
+  * \endcode
+  *
+  * In order to use this module, the superlu headers must be accessible from the include paths, and your binary must be linked to the superlu library and its dependencies.
+  * The dependencies depend on how superlu has been compiled.
+  * For a cmake based project, you can use our FindSuperLU.cmake module to help you in this task.
+  *
+  */
+
+#include "src/SuperLUSupport/SuperLUSupport.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_SUPERLUSUPPORT_MODULE_H

deps_src/eigen/Eigen/UmfPackSupport

@@ -0,0 +1,40 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_UMFPACKSUPPORT_MODULE_H
+#define EIGEN_UMFPACKSUPPORT_MODULE_H
+
+#include "SparseCore"
+
+#include "src/Core/util/DisableStupidWarnings.h"
+
+extern "C" {
+#include <umfpack.h>
+}
+
+/** \ingroup Support_modules
+  * \defgroup UmfPackSupport_Module UmfPackSupport module
+  *
+  * This module provides an interface to the UmfPack library which is part of the <a href="http://www.suitesparse.com">suitesparse</a> package.
+  * It provides the following factorization class:
+  * - class UmfPackLU: a multifrontal sequential LU factorization.
+  *
+  * \code
+  * #include <Eigen/UmfPackSupport>
+  * \endcode
+  *
+  * In order to use this module, the umfpack headers must be accessible from the include paths, and your binary must be linked to the umfpack library and its dependencies.
+  * The dependencies depend on how umfpack has been compiled.
+  * For a cmake based project, you can use our FindUmfPack.cmake module to help you in this task.
+  *
+  */
+
+#include "src/UmfPackSupport/UmfPackSupport.h"
+
+#include "src/Core/util/ReenableStupidWarnings.h"
+
+#endif // EIGEN_UMFPACKSUPPORT_MODULE_H

deps_src/eigen/Eigen/src/Cholesky/LDLT.h

@@ -0,0 +1,673 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2008-2011 Gael Guennebaud <gael.guennebaud@inria.fr>
+// Copyright (C) 2009 Keir Mierle <mierle@gmail.com>
+// Copyright (C) 2009 Benoit Jacob <jacob.benoit.1@gmail.com>
+// Copyright (C) 2011 Timothy E. Holy <tim.holy@gmail.com >
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef EIGEN_LDLT_H
+#define EIGEN_LDLT_H
+
+namespace Eigen {
+
+namespace internal {
+  template<typename MatrixType, int UpLo> struct LDLT_Traits;
+
+  // PositiveSemiDef means positive semi-definite and non-zero; same for NegativeSemiDef
+  enum SignMatrix { PositiveSemiDef, NegativeSemiDef, ZeroSign, Indefinite };
+}
+
+/** \ingroup Cholesky_Module
+  *
+  * \class LDLT
+  *
+  * \brief Robust Cholesky decomposition of a matrix with pivoting
+  *
+  * \tparam _MatrixType the type of the matrix of which to compute the LDL^T Cholesky decomposition
+  * \tparam _UpLo the triangular part that will be used for the decompositon: Lower (default) or Upper.
+  *             The other triangular part won't be read.
+  *
+  * Perform a robust Cholesky decomposition of a positive semidefinite or negative semidefinite
+  * matrix \f$ A \f$ such that \f$ A =  P^TLDL^*P \f$, where P is a permutation matrix, L
+  * is lower triangular with a unit diagonal and D is a diagonal matrix.
+  *
+  * The decomposition uses pivoting to ensure stability, so that L will have
+  * zeros in the bottom right rank(A) - n submatrix. Avoiding the square root
+  * on D also stabilizes the computation.
+  *
+  * Remember that Cholesky decompositions are not rank-revealing. Also, do not use a Cholesky
+  * decomposition to determine whether a system of equations has a solution.
+  *
+  * This class supports the \link InplaceDecomposition inplace decomposition \endlink mechanism.
+  * 
+  * \sa MatrixBase::ldlt(), SelfAdjointView::ldlt(), class LLT
+  */
+template<typename _MatrixType, int _UpLo> class LDLT
+{
+  public:
+    typedef _MatrixType MatrixType;
+    enum {
+      RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+      ColsAtCompileTime = MatrixType::ColsAtCompileTime,
+      MaxRowsAtCompileTime = MatrixType::MaxRowsAtCompileTime,
+      MaxColsAtCompileTime = MatrixType::MaxColsAtCompileTime,
+      UpLo = _UpLo
+    };
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename NumTraits<typename MatrixType::Scalar>::Real RealScalar;
+    typedef Eigen::Index Index; ///< \deprecated since Eigen 3.3
+    typedef typename MatrixType::StorageIndex StorageIndex;
+    typedef Matrix<Scalar, RowsAtCompileTime, 1, 0, MaxRowsAtCompileTime, 1> TmpMatrixType;
+
+    typedef Transpositions<RowsAtCompileTime, MaxRowsAtCompileTime> TranspositionType;
+    typedef PermutationMatrix<RowsAtCompileTime, MaxRowsAtCompileTime> PermutationType;
+
+    typedef internal::LDLT_Traits<MatrixType,UpLo> Traits;
+
+    /** \brief Default Constructor.
+      *
+      * The default constructor is useful in cases in which the user intends to
+      * perform decompositions via LDLT::compute(const MatrixType&).
+      */
+    LDLT()
+      : m_matrix(),
+        m_transpositions(),
+        m_sign(internal::ZeroSign),
+        m_isInitialized(false)
+    {}
+
+    /** \brief Default Constructor with memory preallocation
+      *
+      * Like the default constructor but with preallocation of the internal data
+      * according to the specified problem \a size.
+      * \sa LDLT()
+      */
+    explicit LDLT(Index size)
+      : m_matrix(size, size),
+        m_transpositions(size),
+        m_temporary(size),
+        m_sign(internal::ZeroSign),
+        m_isInitialized(false)
+    {}
+
+    /** \brief Constructor with decomposition
+      *
+      * This calculates the decomposition for the input \a matrix.
+      *
+      * \sa LDLT(Index size)
+      */
+    template<typename InputType>
+    explicit LDLT(const EigenBase<InputType>& matrix)
+      : m_matrix(matrix.rows(), matrix.cols()),
+        m_transpositions(matrix.rows()),
+        m_temporary(matrix.rows()),
+        m_sign(internal::ZeroSign),
+        m_isInitialized(false)
+    {
+      compute(matrix.derived());
+    }
+
+    /** \brief Constructs a LDLT factorization from a given matrix
+      *
+      * This overloaded constructor is provided for \link InplaceDecomposition inplace decomposition \endlink when \c MatrixType is a Eigen::Ref.
+      *
+      * \sa LDLT(const EigenBase&)
+      */
+    template<typename InputType>
+    explicit LDLT(EigenBase<InputType>& matrix)
+      : m_matrix(matrix.derived()),
+        m_transpositions(matrix.rows()),
+        m_temporary(matrix.rows()),
+        m_sign(internal::ZeroSign),
+        m_isInitialized(false)
+    {
+      compute(matrix.derived());
+    }
+
+    /** Clear any existing decomposition
+     * \sa rankUpdate(w,sigma)
+     */
+    void setZero()
+    {
+      m_isInitialized = false;
+    }
+
+    /** \returns a view of the upper triangular matrix U */
+    inline typename Traits::MatrixU matrixU() const
+    {
+      eigen_assert(m_isInitialized && "LDLT is not initialized.");
+      return Traits::getU(m_matrix);
+    }
+
+    /** \returns a view of the lower triangular matrix L */
+    inline typename Traits::MatrixL matrixL() const
+    {
+      eigen_assert(m_isInitialized && "LDLT is not initialized.");
+      return Traits::getL(m_matrix);
+    }
+
+    /** \returns the permutation matrix P as a transposition sequence.
+      */
+    inline const TranspositionType& transpositionsP() const
+    {
+      eigen_assert(m_isInitialized && "LDLT is not initialized.");
+      return m_transpositions;
+    }
+
+    /** \returns the coefficients of the diagonal matrix D */
+    inline Diagonal<const MatrixType> vectorD() const
+    {
+      eigen_assert(m_isInitialized && "LDLT is not initialized.");
+      return m_matrix.diagonal();
+    }
+
+    /** \returns true if the matrix is positive (semidefinite) */
+    inline bool isPositive() const
+    {
+      eigen_assert(m_isInitialized && "LDLT is not initialized.");
+      return m_sign == internal::PositiveSemiDef || m_sign == internal::ZeroSign;
+    }
+
+    /** \returns true if the matrix is negative (semidefinite) */
+    inline bool isNegative(void) const
+    {
+      eigen_assert(m_isInitialized && "LDLT is not initialized.");
+      return m_sign == internal::NegativeSemiDef || m_sign == internal::ZeroSign;
+    }
+
+    /** \returns a solution x of \f$ A x = b \f$ using the current decomposition of A.
+      *
+      * This function also supports in-place solves using the syntax <tt>x = decompositionObject.solve(x)</tt> .
+      *
+      * \note_about_checking_solutions
+      *
+      * More precisely, this method solves \f$ A x = b \f$ using the decomposition \f$ A = P^T L D L^* P \f$
+      * by solving the systems \f$ P^T y_1 = b \f$, \f$ L y_2 = y_1 \f$, \f$ D y_3 = y_2 \f$,
+      * \f$ L^* y_4 = y_3 \f$ and \f$ P x = y_4 \f$ in succession. If the matrix \f$ A \f$ is singular, then
+      * \f$ D \f$ will also be singular (all the other matrices are invertible). In that case, the
+      * least-square solution of \f$ D y_3 = y_2 \f$ is computed. This does not mean that this function
+      * computes the least-square solution of \f$ A x = b \f$ is \f$ A \f$ is singular.
+      *
+      * \sa MatrixBase::ldlt(), SelfAdjointView::ldlt()
+      */
+    template<typename Rhs>
+    inline const Solve<LDLT, Rhs>
+    solve(const MatrixBase<Rhs>& b) const
+    {
+      eigen_assert(m_isInitialized && "LDLT is not initialized.");
+      eigen_assert(m_matrix.rows()==b.rows()
+                && "LDLT::solve(): invalid number of rows of the right hand side matrix b");
+      return Solve<LDLT, Rhs>(*this, b.derived());
+    }
+
+    template<typename Derived>
+    bool solveInPlace(MatrixBase<Derived> &bAndX) const;
+
+    template<typename InputType>
+    LDLT& compute(const EigenBase<InputType>& matrix);
+
+    /** \returns an estimate of the reciprocal condition number of the matrix of
+     *  which \c *this is the LDLT decomposition.
+     */
+    RealScalar rcond() const
+    {
+      eigen_assert(m_isInitialized && "LDLT is not initialized.");
+      return internal::rcond_estimate_helper(m_l1_norm, *this);
+    }
+
+    template <typename Derived>
+    LDLT& rankUpdate(const MatrixBase<Derived>& w, const RealScalar& alpha=1);
+
+    /** \returns the internal LDLT decomposition matrix
+      *
+      * TODO: document the storage layout
+      */
+    inline const MatrixType& matrixLDLT() const
+    {
+      eigen_assert(m_isInitialized && "LDLT is not initialized.");
+      return m_matrix;
+    }
+
+    MatrixType reconstructedMatrix() const;
+
+    /** \returns the adjoint of \c *this, that is, a const reference to the decomposition itself as the underlying matrix is self-adjoint.
+      *
+      * This method is provided for compatibility with other matrix decompositions, thus enabling generic code such as:
+      * \code x = decomposition.adjoint().solve(b) \endcode
+      */
+    const LDLT& adjoint() const { return *this; };
+
+    inline Index rows() const { return m_matrix.rows(); }
+    inline Index cols() const { return m_matrix.cols(); }
+
+    /** \brief Reports whether previous computation was successful.
+      *
+      * \returns \c Success if computation was succesful,
+      *          \c NumericalIssue if the factorization failed because of a zero pivot.
+      */
+    ComputationInfo info() const
+    {
+      eigen_assert(m_isInitialized && "LDLT is not initialized.");
+      return m_info;
+    }
+
+    #ifndef EIGEN_PARSED_BY_DOXYGEN
+    template<typename RhsType, typename DstType>
+    EIGEN_DEVICE_FUNC
+    void _solve_impl(const RhsType &rhs, DstType &dst) const;
+    #endif
+
+  protected:
+
+    static void check_template_parameters()
+    {
+      EIGEN_STATIC_ASSERT_NON_INTEGER(Scalar);
+    }
+
+    /** \internal
+      * Used to compute and store the Cholesky decomposition A = L D L^* = U^* D U.
+      * The strict upper part is used during the decomposition, the strict lower
+      * part correspond to the coefficients of L (its diagonal is equal to 1 and
+      * is not stored), and the diagonal entries correspond to D.
+      */
+    MatrixType m_matrix;
+    RealScalar m_l1_norm;
+    TranspositionType m_transpositions;
+    TmpMatrixType m_temporary;
+    internal::SignMatrix m_sign;
+    bool m_isInitialized;
+    ComputationInfo m_info;
+};
+
+namespace internal {
+
+template<int UpLo> struct ldlt_inplace;
+
+template<> struct ldlt_inplace<Lower>
+{
+  template<typename MatrixType, typename TranspositionType, typename Workspace>
+  static bool unblocked(MatrixType& mat, TranspositionType& transpositions, Workspace& temp, SignMatrix& sign)
+  {
+    using std::abs;
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::RealScalar RealScalar;
+    typedef typename TranspositionType::StorageIndex IndexType;
+    eigen_assert(mat.rows()==mat.cols());
+    const Index size = mat.rows();
+    bool found_zero_pivot = false;
+    bool ret = true;
+
+    if (size <= 1)
+    {
+      transpositions.setIdentity();
+      if(size==0) sign = ZeroSign;
+      else if (numext::real(mat.coeff(0,0)) > static_cast<RealScalar>(0) ) sign = PositiveSemiDef;
+      else if (numext::real(mat.coeff(0,0)) < static_cast<RealScalar>(0)) sign = NegativeSemiDef;
+      else sign = ZeroSign;
+      return true;
+    }
+
+    for (Index k = 0; k < size; ++k)
+    {
+      // Find largest diagonal element
+      Index index_of_biggest_in_corner;
+      mat.diagonal().tail(size-k).cwiseAbs().maxCoeff(&index_of_biggest_in_corner);
+      index_of_biggest_in_corner += k;
+
+      transpositions.coeffRef(k) = IndexType(index_of_biggest_in_corner);
+      if(k != index_of_biggest_in_corner)
+      {
+        // apply the transposition while taking care to consider only
+        // the lower triangular part
+        Index s = size-index_of_biggest_in_corner-1; // trailing size after the biggest element
+        mat.row(k).head(k).swap(mat.row(index_of_biggest_in_corner).head(k));
+        mat.col(k).tail(s).swap(mat.col(index_of_biggest_in_corner).tail(s));
+        std::swap(mat.coeffRef(k,k),mat.coeffRef(index_of_biggest_in_corner,index_of_biggest_in_corner));
+        for(Index i=k+1;i<index_of_biggest_in_corner;++i)
+        {
+          Scalar tmp = mat.coeffRef(i,k);
+          mat.coeffRef(i,k) = numext::conj(mat.coeffRef(index_of_biggest_in_corner,i));
+          mat.coeffRef(index_of_biggest_in_corner,i) = numext::conj(tmp);
+        }
+        if(NumTraits<Scalar>::IsComplex)
+          mat.coeffRef(index_of_biggest_in_corner,k) = numext::conj(mat.coeff(index_of_biggest_in_corner,k));
+      }
+
+      // partition the matrix:
+      //       A00 |  -  |  -
+      // lu  = A10 | A11 |  -
+      //       A20 | A21 | A22
+      Index rs = size - k - 1;
+      Block<MatrixType,Dynamic,1> A21(mat,k+1,k,rs,1);
+      Block<MatrixType,1,Dynamic> A10(mat,k,0,1,k);
+      Block<MatrixType,Dynamic,Dynamic> A20(mat,k+1,0,rs,k);
+
+      if(k>0)
+      {
+        temp.head(k) = mat.diagonal().real().head(k).asDiagonal() * A10.adjoint();
+        mat.coeffRef(k,k) -= (A10 * temp.head(k)).value();
+        if(rs>0)
+          A21.noalias() -= A20 * temp.head(k);
+      }
+
+      // In some previous versions of Eigen (e.g., 3.2.1), the scaling was omitted if the pivot
+      // was smaller than the cutoff value. However, since LDLT is not rank-revealing
+      // we should only make sure that we do not introduce INF or NaN values.
+      // Remark that LAPACK also uses 0 as the cutoff value.
+      RealScalar realAkk = numext::real(mat.coeffRef(k,k));
+      bool pivot_is_valid = (abs(realAkk) > RealScalar(0));
+
+      if(k==0 && !pivot_is_valid)
+      {
+        // The entire diagonal is zero, there is nothing more to do
+        // except filling the transpositions, and checking whether the matrix is zero.
+        sign = ZeroSign;
+        for(Index j = 0; j<size; ++j)
+        {
+          transpositions.coeffRef(j) = IndexType(j);
+          ret = ret && (mat.col(j).tail(size-j-1).array()==Scalar(0)).all();
+        }
+        return ret;
+      }
+
+      if((rs>0) && pivot_is_valid)
+        A21 /= realAkk;
+      else if(rs>0)
+        ret = ret && (A21.array()==Scalar(0)).all();
+
+      if(found_zero_pivot && pivot_is_valid) ret = false; // factorization failed
+      else if(!pivot_is_valid) found_zero_pivot = true;
+
+      if (sign == PositiveSemiDef) {
+        if (realAkk < static_cast<RealScalar>(0)) sign = Indefinite;
+      } else if (sign == NegativeSemiDef) {
+        if (realAkk > static_cast<RealScalar>(0)) sign = Indefinite;
+      } else if (sign == ZeroSign) {
+        if (realAkk > static_cast<RealScalar>(0)) sign = PositiveSemiDef;
+        else if (realAkk < static_cast<RealScalar>(0)) sign = NegativeSemiDef;
+      }
+    }
+
+    return ret;
+  }
+
+  // Reference for the algorithm: Davis and Hager, "Multiple Rank
+  // Modifications of a Sparse Cholesky Factorization" (Algorithm 1)
+  // Trivial rearrangements of their computations (Timothy E. Holy)
+  // allow their algorithm to work for rank-1 updates even if the
+  // original matrix is not of full rank.
+  // Here only rank-1 updates are implemented, to reduce the
+  // requirement for intermediate storage and improve accuracy
+  template<typename MatrixType, typename WDerived>
+  static bool updateInPlace(MatrixType& mat, MatrixBase<WDerived>& w, const typename MatrixType::RealScalar& sigma=1)
+  {
+    using numext::isfinite;
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::RealScalar RealScalar;
+
+    const Index size = mat.rows();
+    eigen_assert(mat.cols() == size && w.size()==size);
+
+    RealScalar alpha = 1;
+
+    // Apply the update
+    for (Index j = 0; j < size; j++)
+    {
+      // Check for termination due to an original decomposition of low-rank
+      if (!(isfinite)(alpha))
+        break;
+
+      // Update the diagonal terms
+      RealScalar dj = numext::real(mat.coeff(j,j));
+      Scalar wj = w.coeff(j);
+      RealScalar swj2 = sigma*numext::abs2(wj);
+      RealScalar gamma = dj*alpha + swj2;
+
+      mat.coeffRef(j,j) += swj2/alpha;
+      alpha += swj2/dj;
+
+
+      // Update the terms of L
+      Index rs = size-j-1;
+      w.tail(rs) -= wj * mat.col(j).tail(rs);
+      if(gamma != 0)
+        mat.col(j).tail(rs) += (sigma*numext::conj(wj)/gamma)*w.tail(rs);
+    }
+    return true;
+  }
+
+  template<typename MatrixType, typename TranspositionType, typename Workspace, typename WType>
+  static bool update(MatrixType& mat, const TranspositionType& transpositions, Workspace& tmp, const WType& w, const typename MatrixType::RealScalar& sigma=1)
+  {
+    // Apply the permutation to the input w
+    tmp = transpositions * w;
+
+    return ldlt_inplace<Lower>::updateInPlace(mat,tmp,sigma);
+  }
+};
+
+template<> struct ldlt_inplace<Upper>
+{
+  template<typename MatrixType, typename TranspositionType, typename Workspace>
+  static EIGEN_STRONG_INLINE bool unblocked(MatrixType& mat, TranspositionType& transpositions, Workspace& temp, SignMatrix& sign)
+  {
+    Transpose<MatrixType> matt(mat);
+    return ldlt_inplace<Lower>::unblocked(matt, transpositions, temp, sign);
+  }
+
+  template<typename MatrixType, typename TranspositionType, typename Workspace, typename WType>
+  static EIGEN_STRONG_INLINE bool update(MatrixType& mat, TranspositionType& transpositions, Workspace& tmp, WType& w, const typename MatrixType::RealScalar& sigma=1)
+  {
+    Transpose<MatrixType> matt(mat);
+    return ldlt_inplace<Lower>::update(matt, transpositions, tmp, w.conjugate(), sigma);
+  }
+};
+
+template<typename MatrixType> struct LDLT_Traits<MatrixType,Lower>
+{
+  typedef const TriangularView<const MatrixType, UnitLower> MatrixL;
+  typedef const TriangularView<const typename MatrixType::AdjointReturnType, UnitUpper> MatrixU;
+  static inline MatrixL getL(const MatrixType& m) { return MatrixL(m); }
+  static inline MatrixU getU(const MatrixType& m) { return MatrixU(m.adjoint()); }
+};
+
+template<typename MatrixType> struct LDLT_Traits<MatrixType,Upper>
+{
+  typedef const TriangularView<const typename MatrixType::AdjointReturnType, UnitLower> MatrixL;
+  typedef const TriangularView<const MatrixType, UnitUpper> MatrixU;
+  static inline MatrixL getL(const MatrixType& m) { return MatrixL(m.adjoint()); }
+  static inline MatrixU getU(const MatrixType& m) { return MatrixU(m); }
+};
+
+} // end namespace internal
+
+/** Compute / recompute the LDLT decomposition A = L D L^* = U^* D U of \a matrix
+  */
+template<typename MatrixType, int _UpLo>
+template<typename InputType>
+LDLT<MatrixType,_UpLo>& LDLT<MatrixType,_UpLo>::compute(const EigenBase<InputType>& a)
+{
+  check_template_parameters();
+
+  eigen_assert(a.rows()==a.cols());
+  const Index size = a.rows();
+
+  m_matrix = a.derived();
+
+  // Compute matrix L1 norm = max abs column sum.
+  m_l1_norm = RealScalar(0);
+  // TODO move this code to SelfAdjointView
+  for (Index col = 0; col < size; ++col) {
+    RealScalar abs_col_sum;
+    if (_UpLo == Lower)
+      abs_col_sum = m_matrix.col(col).tail(size - col).template lpNorm<1>() + m_matrix.row(col).head(col).template lpNorm<1>();
+    else
+      abs_col_sum = m_matrix.col(col).head(col).template lpNorm<1>() + m_matrix.row(col).tail(size - col).template lpNorm<1>();
+    if (abs_col_sum > m_l1_norm)
+      m_l1_norm = abs_col_sum;
+  }
+
+  m_transpositions.resize(size);
+  m_isInitialized = false;
+  m_temporary.resize(size);
+  m_sign = internal::ZeroSign;
+
+  m_info = internal::ldlt_inplace<UpLo>::unblocked(m_matrix, m_transpositions, m_temporary, m_sign) ? Success : NumericalIssue;
+
+  m_isInitialized = true;
+  return *this;
+}
+
+/** Update the LDLT decomposition:  given A = L D L^T, efficiently compute the decomposition of A + sigma w w^T.
+ * \param w a vector to be incorporated into the decomposition.
+ * \param sigma a scalar, +1 for updates and -1 for "downdates," which correspond to removing previously-added column vectors. Optional; default value is +1.
+ * \sa setZero()
+  */
+template<typename MatrixType, int _UpLo>
+template<typename Derived>
+LDLT<MatrixType,_UpLo>& LDLT<MatrixType,_UpLo>::rankUpdate(const MatrixBase<Derived>& w, const typename LDLT<MatrixType,_UpLo>::RealScalar& sigma)
+{
+  typedef typename TranspositionType::StorageIndex IndexType;
+  const Index size = w.rows();
+  if (m_isInitialized)
+  {
+    eigen_assert(m_matrix.rows()==size);
+  }
+  else
+  {
+    m_matrix.resize(size,size);
+    m_matrix.setZero();
+    m_transpositions.resize(size);
+    for (Index i = 0; i < size; i++)
+      m_transpositions.coeffRef(i) = IndexType(i);
+    m_temporary.resize(size);
+    m_sign = sigma>=0 ? internal::PositiveSemiDef : internal::NegativeSemiDef;
+    m_isInitialized = true;
+  }
+
+  internal::ldlt_inplace<UpLo>::update(m_matrix, m_transpositions, m_temporary, w, sigma);
+
+  return *this;
+}
+
+#ifndef EIGEN_PARSED_BY_DOXYGEN
+template<typename _MatrixType, int _UpLo>
+template<typename RhsType, typename DstType>
+void LDLT<_MatrixType,_UpLo>::_solve_impl(const RhsType &rhs, DstType &dst) const
+{
+  eigen_assert(rhs.rows() == rows());
+  // dst = P b
+  dst = m_transpositions * rhs;
+
+  // dst = L^-1 (P b)
+  matrixL().solveInPlace(dst);
+
+  // dst = D^-1 (L^-1 P b)
+  // more precisely, use pseudo-inverse of D (see bug 241)
+  using std::abs;
+  const typename Diagonal<const MatrixType>::RealReturnType vecD(vectorD());
+  // In some previous versions, tolerance was set to the max of 1/highest (or rather numeric_limits::min())
+  // and the maximal diagonal entry * epsilon as motivated by LAPACK's xGELSS:
+  // RealScalar tolerance = numext::maxi(vecD.array().abs().maxCoeff() * NumTraits<RealScalar>::epsilon(),RealScalar(1) / NumTraits<RealScalar>::highest());
+  // However, LDLT is not rank revealing, and so adjusting the tolerance wrt to the highest
+  // diagonal element is not well justified and leads to numerical issues in some cases.
+  // Moreover, Lapack's xSYTRS routines use 0 for the tolerance.
+  // Using numeric_limits::min() gives us more robustness to denormals.
+  RealScalar tolerance = (std::numeric_limits<RealScalar>::min)();
+
+  for (Index i = 0; i < vecD.size(); ++i)
+  {
+    if(abs(vecD(i)) > tolerance)
+      dst.row(i) /= vecD(i);
+    else
+      dst.row(i).setZero();
+  }
+
+  // dst = L^-T (D^-1 L^-1 P b)
+  matrixU().solveInPlace(dst);
+
+  // dst = P^-1 (L^-T D^-1 L^-1 P b) = A^-1 b
+  dst = m_transpositions.transpose() * dst;
+}
+#endif
+
+/** \internal use x = ldlt_object.solve(x);
+  *
+  * This is the \em in-place version of solve().
+  *
+  * \param bAndX represents both the right-hand side matrix b and result x.
+  *
+  * \returns true always! If you need to check for existence of solutions, use another decomposition like LU, QR, or SVD.
+  *
+  * This version avoids a copy when the right hand side matrix b is not
+  * needed anymore.
+  *
+  * \sa LDLT::solve(), MatrixBase::ldlt()
+  */
+template<typename MatrixType,int _UpLo>
+template<typename Derived>
+bool LDLT<MatrixType,_UpLo>::solveInPlace(MatrixBase<Derived> &bAndX) const
+{
+  eigen_assert(m_isInitialized && "LDLT is not initialized.");
+  eigen_assert(m_matrix.rows() == bAndX.rows());
+
+  bAndX = this->solve(bAndX);
+
+  return true;
+}
+
+/** \returns the matrix represented by the decomposition,
+ * i.e., it returns the product: P^T L D L^* P.
+ * This function is provided for debug purpose. */
+template<typename MatrixType, int _UpLo>
+MatrixType LDLT<MatrixType,_UpLo>::reconstructedMatrix() const
+{
+  eigen_assert(m_isInitialized && "LDLT is not initialized.");
+  const Index size = m_matrix.rows();
+  MatrixType res(size,size);
+
+  // P
+  res.setIdentity();
+  res = transpositionsP() * res;
+  // L^* P
+  res = matrixU() * res;
+  // D(L^*P)
+  res = vectorD().real().asDiagonal() * res;
+  // L(DL^*P)
+  res = matrixL() * res;
+  // P^T (LDL^*P)
+  res = transpositionsP().transpose() * res;
+
+  return res;
+}
+
+/** \cholesky_module
+  * \returns the Cholesky decomposition with full pivoting without square root of \c *this
+  * \sa MatrixBase::ldlt()
+  */
+template<typename MatrixType, unsigned int UpLo>
+inline const LDLT<typename SelfAdjointView<MatrixType, UpLo>::PlainObject, UpLo>
+SelfAdjointView<MatrixType, UpLo>::ldlt() const
+{
+  return LDLT<PlainObject,UpLo>(m_matrix);
+}
+
+/** \cholesky_module
+  * \returns the Cholesky decomposition with full pivoting without square root of \c *this
+  * \sa SelfAdjointView::ldlt()
+  */
+template<typename Derived>
+inline const LDLT<typename MatrixBase<Derived>::PlainObject>
+MatrixBase<Derived>::ldlt() const
+{
+  return LDLT<PlainObject>(derived());
+}
+
+} // end namespace Eigen
+
+#endif // EIGEN_LDLT_H