assimp

deps/Assimp/Assimp.cmake

@@ -0,0 +1,40 @@
+if(CMAKE_VERSION VERSION_LESS 3.22)
+    set(_assimp_url "https://github.com/assimp/assimp/archive/refs/tags/v5.3.1.tar.gz")
+    set(_assimp_hash "SHA256=a07666be71afe1ad4bc008c2336b7c688aca391271188eb9108d0c6db1be53f1")
+else()
+    set(_assimp_url "https://github.com/assimp/assimp/archive/refs/tags/v5.4.3.tar.gz")
+    set(_assimp_hash "SHA256=66dfbaee288f2bc43172440a55d0235dfc7bf885dda6435c038e8000e79582cb")
+endif()
+
+# Assimp's bundled zlib (contrib/zlib) is too old to compile against the modern
+# macOS SDK: its zutil.h takes the classic-Mac branch under TARGET_OS_MAC and
+# does `#define fdopen(fd,mode) NULL`, which then clobbers the SDK's real
+# `fdopen` prototype in <stdio.h> and breaks the build. On macOS use the system
+# zlib (already found by find_package(ZLIB) in deps-unix-common) instead.
+if(APPLE)
+    set(_assimp_build_zlib "-DASSIMP_BUILD_ZLIB=OFF")
+else()
+    set(_assimp_build_zlib "-DASSIMP_BUILD_ZLIB=ON")
+endif()
+
+orcaslicer_add_cmake_project(Assimp
+    URL ${_assimp_url}
+    URL_HASH ${_assimp_hash}
+    CMAKE_ARGS
+        -DASSIMP_BUILD_TESTS=OFF
+        -DASSIMP_BUILD_SAMPLES=OFF
+        -DASSIMP_BUILD_ASSIMP_TOOLS=OFF
+        -DASSIMP_INSTALL_PDB=OFF
+        -DASSIMP_NO_EXPORT=ON
+        -DASSIMP_BUILD_ALL_IMPORTERS_BY_DEFAULT=OFF
+        -DASSIMP_BUILD_GLTF_IMPORTER=ON
+        -DASSIMP_BUILD_OBJ_IMPORTER=ON
+        -DASSIMP_BUILD_FBX_IMPORTER=ON
+        ${_assimp_build_zlib}
+        -DASSIMP_WARNINGS_AS_ERRORS=OFF
+        -DBUILD_WITH_STATIC_CRT=OFF
+)
+
+if (MSVC)
+    add_debug_dep(dep_Assimp)
+endif ()

deps/CMakeLists.txt

@@ -367,6 +367,9 @@ include(libnoise/libnoise.cmake)
 
 include(Draco/Draco.cmake)
 
+# Assimp: glTF/GLB/FBX import for the texture-to-color feature.
+include(Assimp/Assimp.cmake)
+
 
 # I *think* 1.1 is used for *just* md5 hashing?
 # 3.1 has everything in the right place, but the md5 funcs used are deprecated
@@ -448,6 +451,7 @@ set(_dep_list
     dep_libnoise
     dep_python3
     dep_wxInspector
+    dep_Assimp
     )
 
 if (MSVC)