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OrcaSlicer/tests/slic3rutils/test_slicing_pipeline_bindings.cpp
SoftFever a04ce5f81e docs(plugin): make comments self-contained; drop design-doc and dead-code references 
Review the slicing-pipeline plugin comments for context a reader of the source
alone cannot follow, and rewrite them to stand on their own:

- drop pointers to uncommitted design/plan material ("§3.6 (Twistify design)",
  "the brief's note", "Fix 4(a)/4(b)")
- fix dangling references to code this branch removed: the retired set_slices()
  and view mutators, the former G-code post-processing capability/trampoline,
  the "Post-processing" capability family, the pre-refactor array helper
- drop "v1"/"in v1" phase labels, keeping the behavior they described
- correct stale cross-references: Twistify.py -> the real sample path;
  test_plugin_host_api.cpp:32-40 -> import_orca_module in python_test_support.hpp;
  "the binding"/"graphs above" -> the named source

Comment/string-only; no code behavior change.
2026-07-11 03:30:05 +08:00

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#include <catch2/catch_test_macros.hpp>
#include "slic3r/plugin/PythonPluginInterface.hpp"
using namespace Slic3r;
TEST_CASE("SlicingPipeline capability-type string maps round-trip", "[slicing_pipeline]") {
CHECK(plugin_capability_type_to_string(PluginCapabilityType::SlicingPipeline) == "slicing-pipeline");
CHECK(plugin_capability_type_display_name(PluginCapabilityType::SlicingPipeline) == "Slicing Pipeline");
CHECK(plugin_capability_type_from_string("slicing-pipeline") == PluginCapabilityType::SlicingPipeline);
CHECK(plugin_capability_type_from_string("SLICING-PIPELINE") == PluginCapabilityType::SlicingPipeline);
CHECK(plugin_capability_type_from_string("nope") == PluginCapabilityType::Unknown);
}
#include "python_test_support.hpp"
#include "slic3r/plugin/PluginBindingUtils.hpp"
#include "slic3r/plugin/pluginTypes/slicingPipeline/SlicingPipelinePluginCapability.hpp"
#include "libslic3r/Point.hpp"
#include "libslic3r/ExPolygon.hpp"
#include "libslic3r/Surface.hpp"
#include "libslic3r/Layer.hpp"
#include "libslic3r/ExtrusionEntity.hpp"
#include "libslic3r/ExtrusionEntityCollection.hpp"
#include <catch2/matchers/catch_matchers_floating_point.hpp>
#include <pybind11/embed.h>
#include <pybind11/numpy.h>
namespace py = pybind11;
TEST_CASE("make_readonly_rows builds a read-only (N,2) int64 view", "[slicing_pipeline]") {
ensure_python_initialized(); // helper already used by test_plugin_host_api.cpp
py::gil_scoped_acquire gil;
// make_readonly_rows() constructs a py::array_t, which requires numpy to be
// importable in the embedded interpreter. The unit-test interpreter ships no
// site-packages (same condition test_plugin_host_api.cpp's TriangleMesh numpy
// test guards against), so skip the array-backed assertions when numpy is
// unavailable there rather than fail on an environment quirk.
bool have_numpy = false;
try {
py::module_::import("numpy");
have_numpy = true;
} catch (const py::error_already_set&) {
have_numpy = false;
}
if (!have_numpy) {
SKIP("numpy unavailable in unit-test interpreter");
}
static Slic3r::Points pts = { Slic3r::Point(10, 20), Slic3r::Point(30, 40) };
py::capsule keepalive(&pts, [](void*){});
py::array a = Slic3r::make_readonly_rows<coord_t, 2>(keepalive, pts.front().data(), (py::ssize_t)pts.size());
CHECK(a.dtype().kind() == 'i');
CHECK(a.itemsize() == 8); // int64
CHECK(a.shape(0) == 2);
CHECK(a.shape(1) == 2);
CHECK_FALSE(a.writeable());
auto r = a.unchecked<coord_t, 2>();
CHECK(r(0,0) == 10); CHECK(r(1,1) == 40);
}
TEST_CASE("make_writable_rows builds a writable (N,2) int64 view that aliases the buffer", "[slicing_pipeline]") {
ensure_python_initialized();
py::gil_scoped_acquire gil;
bool have_numpy = false;
try { py::module_::import("numpy"); have_numpy = true; }
catch (const py::error_already_set&) { have_numpy = false; }
if (!have_numpy) SKIP("numpy unavailable in unit-test interpreter");
static Slic3r::Points pts = { Slic3r::Point(10, 20), Slic3r::Point(30, 40) };
py::capsule keepalive(&pts, [](void*){});
py::array a = Slic3r::make_writable_rows<coord_t, 2>(keepalive, pts.front().data(), (py::ssize_t)pts.size());
CHECK(a.writeable());
// Writing through the view mutates the C++ buffer (zero-copy alias).
a.attr("__setitem__")(py::make_tuple(0, 0), py::int_(99));
CHECK(pts.front().x() == 99);
}
TEST_CASE("orca.slicing module: Step enum, context, and a Python capability can execute", "[slicing_pipeline]") {
ensure_python_initialized();
import_orca_module(); // forces PythonPluginBridge::instance() (see import_orca_module in python_test_support.hpp)
py::gil_scoped_acquire gil;
py::module_ orca = py::module_::import("orca");
REQUIRE(py::hasattr(orca, "slicing"));
py::object slicing = orca.attr("slicing");
CHECK(py::hasattr(slicing, "Step"));
CHECK(py::hasattr(slicing.attr("Step"), "posSlice"));
CHECK(py::hasattr(slicing.attr("Step"), "psGCodePostProcess"));
CHECK(py::hasattr(slicing, "SlicingPipelineContext"));
CHECK(py::hasattr(slicing, "SlicingPipelineCapabilityBase"));
// A trivial Python subclass whose execute() reports success, invoked via the C++ trampoline.
py::exec(R"(
import orca
class Probe(orca.slicing.SlicingPipelineCapabilityBase):
def get_name(self): return "probe"
def execute(self, ctx): return orca.ExecutionResult.success("ok")
_probe = Probe()
)");
// (Full C++ trampoline invocation with a real context is exercised elsewhere.)
}
TEST_CASE("orca.slicing is workflow-only: context exposes raw print/object; view classes are gone", "[slicing_pipeline]") {
using Catch::Matchers::WithinRel;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
py::module_ orca = py::module_::import("orca");
py::object slicing = orca.attr("slicing");
// Context surface: raw graph entry points + workflow accessors.
for (const char* name : { "print", "object", "params", "config_value", "cancelled",
"orca_version", "step" })
CHECK(py::hasattr(slicing.attr("SlicingPipelineContext"), name));
// The wrapper layer is gone.
for (const char* legacy : { "ExPolygonView", "SurfaceView", "LayerRegionView",
"LayerView", "PrintObjectView", "PathData", "SurfaceType" })
CHECK_FALSE(py::hasattr(slicing, legacy));
// unscale() stays in orca.slicing and reads the live SCALING_FACTOR.
const coord_t scaled10 = (coord_t) scale_(10.0);
double mm = slicing.attr("unscale")(scaled10).cast<double>();
CHECK_THAT(mm, WithinRel(10.0, 1e-9));
// A default context casts print/object to None (no dangling wrapper).
Slic3r::SlicingPipelineContext ctx;
py::object pyctx = py::cast(&ctx, py::return_value_policy::reference);
CHECK(pyctx.attr("print").is_none());
CHECK(pyctx.attr("object").is_none());
}
#include "libslic3r/PrintConfig.hpp" // DynamicPrintConfig for the psGCodePostProcess context
#include <boost/filesystem.hpp>
#include <boost/nowide/fstream.hpp>
#include <sstream>
// psGCodePostProcess is the merged post-processing seam: no live Print (print/object are None), the
// plugin edits the file at ctx.gcode_path in place, and ctx.config_value() falls back to the config
// the export path handed in. Exercising the real bindings by calling the Python execute() directly
// (not the C++ audit trampoline) keeps this a pure binding-surface test.
TEST_CASE("orca.slicing psGCodePostProcess context: file edit in place + config fallback", "[slicing_pipeline]") {
namespace fs = boost::filesystem;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
const fs::path gpath = fs::temp_directory_path() / fs::unique_path("orca_pp_%%%%-%%%%.gcode");
{
boost::nowide::ofstream ofs(gpath.string());
ofs << "; header\nG1 X0 Y0\n";
}
// Config the plugin reads back through ctx.config_value() (there is no live Print at this step).
Slic3r::DynamicPrintConfig config = Slic3r::DynamicPrintConfig::full_print_config();
config.set_key_value("layer_height", new Slic3r::ConfigOptionFloat(0.2));
Slic3r::SlicingPipelineContext ctx;
ctx.orca_version = "test";
ctx.step = Slic3r::SlicingPipelineStepPlugin::psGCodePostProcess;
ctx.gcode_path = gpath.string();
ctx.host = "File";
ctx.output_name = "final.gcode";
ctx.full_config = &config; // print stays null
py::object pyctx = py::cast(&ctx, py::return_value_policy::reference);
CHECK(pyctx.attr("gcode_path").cast<std::string>() == gpath.string());
CHECK(pyctx.attr("host").cast<std::string>() == "File");
CHECK(pyctx.attr("output_name").cast<std::string>() == "final.gcode");
CHECK(pyctx.attr("print").is_none());
CHECK(pyctx.attr("object").is_none());
CHECK(pyctx.attr("step").cast<Slic3r::SlicingPipelineStepPlugin>()
== Slic3r::SlicingPipelineStepPlugin::psGCodePostProcess);
CHECK_FALSE(pyctx.attr("cancelled")().cast<bool>()); // null print -> not cancelled
// config_value() resolves from full_config when print is null; unknown keys are None.
CHECK_FALSE(pyctx.attr("config_value")("layer_height").is_none());
CHECK(pyctx.attr("config_value")("this_key_does_not_exist").is_none());
// A Python capability edits the file in place through ctx.gcode_path. Calling execute() directly
// in Python dispatches to the Python method (no C++ trampoline), so this needs no audit context.
py::module_ main = py::module_::import("__main__");
main.attr("_pp_ctx") = pyctx;
py::exec(R"(
import orca
class Stamp(orca.slicing.SlicingPipelineCapabilityBase):
def get_name(self): return "stamp"
def execute(self, ctx):
assert ctx.step == orca.slicing.Step.psGCodePostProcess
assert ctx.print is None and ctx.object is None
with open(ctx.gcode_path, "a") as f:
f.write("; stamped by " + ctx.host + "\n")
return orca.ExecutionResult.success("ok")
_pp_result = Stamp().execute(_pp_ctx)
)");
CHECK(main.attr("_pp_result").attr("message").cast<std::string>() == std::string("ok"));
std::string contents;
{
boost::nowide::ifstream ifs(gpath.string());
std::stringstream ss; ss << ifs.rdbuf(); contents = ss.str();
}
CHECK(contents.find("; stamped by File") != std::string::npos);
fs::remove(gpath);
}
// ---------------------------------------------------------------------------
// Toolpath helpers for the raw-graph tests.
//
// LayerRegion's ctor is protected (constructed only by Layer/PrintObject). A
// trivial derived struct lets a unit test build one with null layer/region
// pointers — the extrusion accessors only read the public `perimeters`/`fills`
// collections, never the layer/region back-pointers.
// ---------------------------------------------------------------------------
namespace {
struct TestLayerRegion : Slic3r::LayerRegion {
TestLayerRegion() : Slic3r::LayerRegion(nullptr, nullptr) {}
};
// Build a realistic nested perimeters collection into `region.perimeters`:
// perimeters (outer) -> inner collection -> [ ExtrusionLoop(pathA), ExtrusionPath(pathB) ]
// This exercises both the recursive descent through nested collections and the
// decomposition of an ExtrusionLoop into its contained ExtrusionPath (flatten()
// does NOT decompose loops, hence the hand-rolled recursive walk).
static void build_nested_perimeters(TestLayerRegion& region) {
using namespace Slic3r;
ExtrusionPath pathA(erExternalPerimeter); // -> "Outer wall"
pathA.mm3_per_mm = 0.05; pathA.width = 0.45f; pathA.height = 0.20f;
pathA.polyline.points = { Point3(0, 0, 0), Point3(10, 0, 0), Point3(10, 10, 0) };
ExtrusionPath pathB(erInternalInfill); // -> "Sparse infill"
pathB.mm3_per_mm = 0.03; pathB.width = 0.40f; pathB.height = 0.20f;
pathB.polyline.points = { Point3(1, 1, 0), Point3(2, 1, 0), Point3(2, 2, 0) };
ExtrusionEntityCollection inner;
inner.append(ExtrusionLoop(pathA)); // clone_move
inner.append(pathB); // clone
region.perimeters.append(inner); // nested (deep clone)
}
} // namespace
// ---------------------------------------------------------------------------
// Raw Print-graph data model (orca.host) — replaces the *View wrapper API.
// LIFETIME: raw bindings follow C++ semantics — references into the slicing
// graph are valid during execute(ctx) and invalidated by container-replacing
// mutators, exactly like std::vector iterators.
// ---------------------------------------------------------------------------
TEST_CASE("orca.host leaf geometry: Surface/ExPolygon/Polygon raw bindings", "[slicing_pipeline]") {
using Catch::Matchers::WithinRel;
using Catch::Matchers::WithinAbs;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
py::object host = py::module_::import("orca").attr("host");
for (const char* name : { "SurfaceType", "Polygon", "ExPolygon", "Surface", "SurfaceCollection" })
CHECK(py::hasattr(host, name));
// SurfaceType enum values round-trip to the C++ enumerators (moved from orca.slicing).
py::object ST = host.attr("SurfaceType");
CHECK(ST.attr("stTop").cast<Slic3r::SurfaceType>() == Slic3r::stTop);
CHECK(ST.attr("stInternalSolid").cast<Slic3r::SurfaceType>() == Slic3r::stInternalSolid);
CHECK(ST.attr("stPerimeter").cast<Slic3r::SurfaceType>() == Slic3r::stPerimeter);
// Raw Surface: scalar reads + WRITABLE surface_type (replaces SurfaceView.set_type).
Slic3r::Surface surf(Slic3r::stInternalSolid);
surf.thickness = 0.4;
surf.bridge_angle = -1.0;
surf.extra_perimeters = 2;
py::object sv = py::cast(&surf, py::return_value_policy::reference);
CHECK(sv.attr("surface_type").cast<Slic3r::SurfaceType>() == Slic3r::stInternalSolid);
CHECK_THAT(sv.attr("thickness").cast<double>(), WithinRel(0.4, 1e-9));
CHECK_THAT(sv.attr("bridge_angle").cast<double>(), WithinAbs(-1.0, 1e-12));
CHECK(sv.attr("extra_perimeters").cast<int>() == 2);
sv.attr("surface_type") = host.attr("SurfaceType").attr("stTop");
CHECK(surf.surface_type == Slic3r::stTop); // C++ side reflects the assignment
// ExPolygon navigation without numpy: contour is a Polygon, holes an empty list.
py::object exv = sv.attr("expolygon");
CHECK(py::hasattr(exv, "contour"));
CHECK(exv.attr("holes").cast<py::list>().size() == 0);
CHECK(exv.attr("contour").attr("size")().cast<size_t>() == 0);
}
TEST_CASE("orca.host Surface/SurfaceCollection: construct, writable members, set()", "[slicing_pipeline]") {
using Catch::Matchers::WithinRel;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
py::object host = py::module_::import("orca").attr("host");
py::object ST = host.attr("SurfaceType");
const coord_t s = (coord_t) scale_(10.0);
// Build an ExPolygon (Point idiom) and a Surface from it.
py::object P = host.attr("Polygon")();
P.attr("append")(host.attr("Point")(0, 0));
P.attr("append")(host.attr("Point")(s, 0));
P.attr("append")(host.attr("Point")(s, s));
P.attr("append")(host.attr("Point")(0, s));
py::object ex = host.attr("ExPolygon")(P);
py::object surf = host.attr("Surface")(ST.attr("stTop"), ex);
CHECK(surf.attr("surface_type").cast<Slic3r::SurfaceType>() == Slic3r::stTop);
CHECK(surf.attr("is_top")().cast<bool>());
CHECK_THAT(surf.attr("area")().cast<double>(), WithinRel((double) s * (double) s, 1e-9));
surf.attr("thickness") = py::float_(0.3);
CHECK_THAT(surf.attr("thickness").cast<double>(), WithinRel(0.3, 1e-9));
// SurfaceCollection.set(expolys, type): replace all surfaces from a list of ExPolygon tagged with one SurfaceType.
Slic3r::SurfaceCollection coll;
py::object cv = py::cast(&coll, py::return_value_policy::reference);
py::list expolys; expolys.append(ex);
cv.attr("set")(expolys, ST.attr("stInternalSolid"));
REQUIRE(coll.surfaces.size() == 1);
CHECK(coll.surfaces.front().surface_type == Slic3r::stInternalSolid);
CHECK(cv.attr("has")(ST.attr("stInternalSolid")).cast<bool>());
cv.attr("clear")();
CHECK(coll.surfaces.empty());
}
TEST_CASE("orca.host Point: construct, read/write coords, arithmetic", "[slicing_pipeline]") {
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
py::object host = py::module_::import("orca").attr("host");
REQUIRE(py::hasattr(host, "Point"));
py::object p = host.attr("Point")(3, 4);
CHECK(p.attr("x").cast<coord_t>() == 3);
CHECK(p.attr("y").cast<coord_t>() == 4);
p.attr("x") = py::int_(7);
CHECK(p.attr("x").cast<coord_t>() == 7);
py::object q = host.attr("Point")(1, 2);
py::object sum = p.attr("__add__")(q);
CHECK(sum.attr("x").cast<coord_t>() == 8);
CHECK(sum.attr("y").cast<coord_t>() == 6);
// __mul__ must scale as a double, not truncate to int64 before multiplying.
py::object h = host.attr("Point")(10, 20).attr("__mul__")(py::float_(0.5));
CHECK(h.attr("x").cast<coord_t>() == 5);
CHECK(h.attr("y").cast<coord_t>() == 10);
}
TEST_CASE("orca.host Polygon: writable as_array aliases buffer; Point refs; set_points; offset", "[slicing_pipeline]") {
using Catch::Matchers::WithinRel;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
py::object host = py::module_::import("orca").attr("host");
const coord_t s = (coord_t) scale_(10.0);
Slic3r::Polygon poly;
poly.points = { Slic3r::Point(0, 0), Slic3r::Point(s, 0), Slic3r::Point(s, s), Slic3r::Point(0, s) };
py::object pv = py::cast(&poly, py::return_value_policy::reference);
// Non-array surface works without numpy.
CHECK(pv.attr("size")().cast<size_t>() == 4);
CHECK(pv.attr("is_counter_clockwise")().cast<bool>());
CHECK_THAT(pv.attr("area")().cast<double>(), WithinRel((double) s * (double) s, 1e-9));
// Point-object idiom: editing a returned Point ref mutates the buffer in place.
py::list pts = pv.attr("points").cast<py::list>();
REQUIRE(pts.size() == 4);
pts[0].attr("x") = py::int_(5);
CHECK(poly.points[0].x() == 5);
poly.points[0].x() = 0; // restore
// offset() returns new geometry (ClipperUtils bound as a method).
py::list shrunk = pv.attr("offset")(py::int_(-(coord_t)scale_(1.0))).cast<py::list>();
CHECK(shrunk.size() >= 1);
bool have_numpy = false;
try { py::module_::import("numpy"); have_numpy = true; }
catch (const py::error_already_set&) { have_numpy = false; }
if (!have_numpy) SKIP("numpy unavailable: array-backed assertions skipped");
py::module_ np = py::module_::import("numpy");
py::array a = pv.attr("as_array")().cast<py::array>();
CHECK(a.dtype().kind() == 'i');
CHECK(a.itemsize() == 8);
CHECK(a.shape(0) == 4);
CHECK(a.shape(1) == 2);
CHECK(a.writeable()); // writable now
a.attr("__setitem__")(py::make_tuple(0, 0), py::int_(123));
CHECK(poly.points[0].x() == 123); // in-place bulk edit
// set_points replaces contents (count-changing).
py::object i64 = np.attr("int64");
py::list rows;
rows.append(py::make_tuple(0, 0)); rows.append(py::make_tuple(s, 0)); rows.append(py::make_tuple(s, s));
pv.attr("set_points")(np.attr("array")(rows, py::arg("dtype") = i64));
CHECK(poly.points.size() == 3);
}
TEST_CASE("orca.host ExPolygon: construct, writable contour/holes, transforms, boolean ops", "[slicing_pipeline]") {
using Catch::Matchers::WithinRel;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
py::object host = py::module_::import("orca").attr("host");
const coord_t s = (coord_t) scale_(10.0);
// Construct from Polygon objects (Point idiom, no numpy).
py::object P = host.attr("Polygon")();
P.attr("append")(host.attr("Point")(0, 0));
P.attr("append")(host.attr("Point")(s, 0));
P.attr("append")(host.attr("Point")(s, s));
P.attr("append")(host.attr("Point")(0, s));
py::object ex = host.attr("ExPolygon")(P);
CHECK_THAT(ex.attr("area")().cast<double>(), WithinRel((double) s * (double) s, 1e-9));
CHECK(ex.attr("num_contours")().cast<size_t>() == 1);
CHECK(ex.attr("contour").attr("size")().cast<size_t>() == 4);
// In-place transform mutates the geometry.
ex.attr("translate")(py::float_(1000.0), py::float_(0.0));
// Boolean op returns new geometry: A minus a smaller inset of A is a non-empty ring set.
py::list inset = ex.attr("offset")(py::int_(-(coord_t)scale_(1.0))).cast<py::list>();
REQUIRE(inset.size() >= 1);
py::list ring = ex.attr("diff_ex")(inset[0]).cast<py::list>();
CHECK(ring.size() >= 1);
}
namespace {
// Nested collection: outer -> inner -> [ ExtrusionLoop(pathA), ExtrusionPath(pathB) ].
// Exercises polymorphic downcast of .entities and loop decomposition in flatten_paths().
static Slic3r::ExtrusionEntityCollection build_nested_collection() {
using namespace Slic3r;
ExtrusionPath pathA(erExternalPerimeter); // -> "Outer wall"
pathA.mm3_per_mm = 0.05; pathA.width = 0.45f; pathA.height = 0.20f;
pathA.polyline.points = { Point3(0, 0, 0), Point3(10, 0, 0), Point3(10, 10, 0) };
ExtrusionPath pathB(erInternalInfill); // -> "Sparse infill"
pathB.mm3_per_mm = 0.03; pathB.width = 0.40f; pathB.height = 0.20f;
pathB.polyline.points = { Point3(1, 1, 0), Point3(2, 1, 0), Point3(2, 2, 0) };
ExtrusionEntityCollection inner;
inner.append(ExtrusionLoop(pathA));
inner.append(pathB);
ExtrusionEntityCollection outer;
outer.append(inner);
return outer;
}
} // namespace
TEST_CASE("orca.host extrusion tree: polymorphic entities + flatten_paths", "[slicing_pipeline]") {
using Catch::Matchers::WithinRel;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
py::object host = py::module_::import("orca").attr("host");
for (const char* name : { "ExtrusionEntity", "ExtrusionPath", "ExtrusionLoop",
"ExtrusionMultiPath", "ExtrusionEntityCollection", "PrintRegion" })
CHECK(py::hasattr(host, name));
Slic3r::ExtrusionEntityCollection outer = build_nested_collection();
py::object coll = py::cast(&outer, py::return_value_policy::reference);
// .entities downcasts: the single child is a collection; ITS children are a loop + a path.
py::list kids = coll.attr("entities").cast<py::list>();
REQUIRE(kids.size() == 1);
py::list inner_kids = kids[0].attr("entities").cast<py::list>();
REQUIRE(inner_kids.size() == 2);
CHECK(py::hasattr(inner_kids[0], "paths")); // ExtrusionLoop binding
CHECK(py::hasattr(inner_kids[1], "width")); // ExtrusionPath binding
// flatten_paths: loop decomposed, scalars readable.
py::list ps = coll.attr("flatten_paths")().cast<py::list>();
REQUIRE(ps.size() == 2);
CHECK(ps[0].attr("role").cast<std::string>() == "Outer wall");
CHECK_THAT(ps[0].attr("width").cast<double>(), WithinRel(0.45, 1e-6));
CHECK_THAT(ps[0].attr("mm3_per_mm").cast<double>(), WithinRel(0.05, 1e-9));
CHECK(ps[1].attr("role").cast<std::string>() == "Sparse infill");
}
TEST_CASE("orca.host ExtrusionPath.points() is a read-only (N,3) int64 view", "[slicing_pipeline]") {
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
bool have_numpy = false;
try { py::module_::import("numpy"); have_numpy = true; }
catch (const py::error_already_set&) { have_numpy = false; }
if (!have_numpy) SKIP("numpy unavailable in unit-test interpreter");
Slic3r::ExtrusionEntityCollection outer = build_nested_collection();
py::object coll = py::cast(&outer, py::return_value_policy::reference);
py::list ps = coll.attr("flatten_paths")().cast<py::list>();
REQUIRE(ps.size() == 2);
py::array pts = ps[1].attr("points")().cast<py::array>(); // pathB: (1,1,0),(2,1,0),(2,2,0)
CHECK(pts.dtype().kind() == 'i');
CHECK(pts.itemsize() == 8);
CHECK(pts.shape(0) == 3);
CHECK(pts.shape(1) == 3);
CHECK_FALSE(pts.writeable());
auto r = pts.cast<py::array_t<coord_t>>().unchecked<2>();
CHECK(r(0, 0) == 1); CHECK(r(1, 0) == 2); CHECK(r(2, 1) == 2);
}
// ---------------------------------------------------------------------------
// Raw Print-graph spine (orca.host): LayerRegion / Layer / PrintObject / Print,
// read side. LayerRegion/Layer ctors are protected (friend class PrintObject),
// so the tests use tiny derived structs -- the pattern TestLayerRegion above
// already establishes; TestLayer is its Layer counterpart.
// ---------------------------------------------------------------------------
namespace {
struct TestLayer : Slic3r::Layer {
// id=0, no owning PrintObject, height/print_z/slice_z suitable for assertions.
TestLayer() : Slic3r::Layer(0, nullptr, 0.2, 0.45, 0.35) {}
};
} // namespace
TEST_CASE("orca.host graph classes: LayerRegion/Layer raw traversal; Print/PrintObject registered", "[slicing_pipeline]") {
using Catch::Matchers::WithinRel;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
py::object host = py::module_::import("orca").attr("host");
for (const char* name : { "LayerRegion", "Layer", "PrintObject", "Print" })
CHECK(py::hasattr(host, name));
// Members needing a live Print are verified by registration only (slic3rutils
// cannot build a Print; the fff_print C++ suite covers live-graph behavior).
for (const char* name : { "layers", "support_layers", "model_object", "id",
"bounding_box", "trafo", "config_value", "config_keys" })
CHECK(py::hasattr(host.attr("PrintObject"), name));
for (const char* name : { "objects", "model", "config_value", "config_keys", "canceled" })
CHECK(py::hasattr(host.attr("Print"), name));
// Raw LayerRegion traversal over a hand-built region.
TestLayerRegion region;
region.slices.surfaces.emplace_back(Slic3r::Surface(Slic3r::stInternal));
build_nested_perimeters(region); // helper defined earlier in this file
py::object lr = py::cast(static_cast<Slic3r::LayerRegion*>(&region),
py::return_value_policy::reference);
CHECK(lr.attr("slices").attr("size")().cast<size_t>() == 1);
CHECK(lr.attr("slices").attr("surfaces").cast<py::list>().size() == 1);
CHECK(lr.attr("perimeters").attr("flatten_paths")().cast<py::list>().size() == 2);
CHECK(lr.attr("fills").attr("size")().cast<size_t>() == 0);
CHECK(lr.attr("layer")().is_none()); // hand-built region has no owning layer
// Raw Layer scalars + empty traversals on a hand-built layer.
TestLayer layer;
py::object ly = py::cast(static_cast<Slic3r::Layer*>(&layer),
py::return_value_policy::reference);
CHECK_THAT(ly.attr("print_z").cast<double>(), WithinRel(0.45, 1e-9));
CHECK_THAT(ly.attr("slice_z").cast<double>(), WithinRel(0.35, 1e-9));
CHECK_THAT(ly.attr("height").cast<double>(), WithinRel(0.2, 1e-9));
CHECK(ly.attr("regions")().cast<py::list>().size() == 0);
CHECK(ly.attr("lslices")().cast<py::list>().size() == 0);
CHECK(ly.attr("upper_layer").is_none());
CHECK(ly.attr("lower_layer").is_none());
}
TEST_CASE("orca.host: plugin-only mutators are gone; class-API editing works", "[slicing_pipeline]") {
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
py::object host = py::module_::import("orca").attr("host");
// The three plugin-only mutators were removed in the raw-API realignment.
CHECK_FALSE(py::hasattr(host.attr("LayerRegion"), "set_slices"));
CHECK_FALSE(py::hasattr(host.attr("LayerRegion"), "set_fill_surfaces"));
CHECK_FALSE(py::hasattr(host.attr("Layer"), "set_lslices"));
// The faithful surface is present.
CHECK(py::hasattr(host.attr("SurfaceCollection"), "set"));
CHECK(py::hasattr(host.attr("Layer"), "make_slices"));
// clear() via the collection on a hand-built region (null owning layer is null-safe).
TestLayerRegion region;
region.slices.surfaces.emplace_back(Slic3r::Surface(Slic3r::stInternal));
py::object lr = py::cast(static_cast<Slic3r::LayerRegion*>(&region), py::return_value_policy::reference);
lr.attr("slices").attr("clear")();
CHECK(region.slices.surfaces.empty());
}
TEST_CASE("orca.host: SurfaceCollection.set mutates geometry; lslices via make_slices", "[slicing_pipeline]") {
using Catch::Matchers::WithinRel;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
bool have_numpy = false;
try { py::module_::import("numpy"); have_numpy = true; }
catch (const py::error_already_set&) { have_numpy = false; }
if (!have_numpy) SKIP("numpy unavailable in unit-test interpreter");
py::object host = py::module_::import("orca").attr("host");
py::module_ np = py::module_::import("numpy");
py::object i64 = np.attr("int64");
py::object ST = host.attr("SurfaceType");
const coord_t s = (coord_t) scale_(10.0);
auto arr = [&](std::initializer_list<std::pair<coord_t,coord_t>> pts) {
py::list rows; for (auto& p : pts) rows.append(py::make_tuple(p.first, p.second));
return np.attr("array")(rows, py::arg("dtype") = i64);
};
// Build an ExPolygon from a CW ndarray; the ctor normalizes to CCW.
py::object ex = host.attr("ExPolygon")(arr({ {0,0}, {0,s}, {s,s}, {s,0} }));
CHECK(ex.attr("contour").attr("is_counter_clockwise")().cast<bool>());
TestLayerRegion region;
py::object lr = py::cast(static_cast<Slic3r::LayerRegion*>(&region), py::return_value_policy::reference);
py::list expolys; expolys.append(ex);
lr.attr("slices").attr("set")(expolys, ST.attr("stInternalSolid"));
REQUIRE(region.slices.surfaces.size() == 1);
const Slic3r::Surface& out = region.slices.surfaces.front();
CHECK(out.surface_type == Slic3r::stInternalSolid);
CHECK_THAT(out.expolygon.area(), WithinRel((double) s * (double) s, 1e-9));
// Read geometry back through the class API.
py::array c = lr.attr("slices").attr("surfaces").cast<py::list>()[0]
.attr("expolygon").attr("contour").attr("as_array")().cast<py::array>();
CHECK(c.shape(0) == 4);
// lslices are derived: make_slices() re-derives them + refreshes the bbox cache.
TestLayer layer;
py::object ly = py::cast(static_cast<Slic3r::Layer*>(&layer), py::return_value_policy::reference);
// (A hand-built layer has no regions, so make_slices() yields empty lslices — still null-safe.)
ly.attr("make_slices")();
CHECK(layer.lslices_bboxes.size() == layer.lslices.size());
}
TEST_CASE("orca.host ExPolygon in-place transforms + SurfaceCollection.append (sample ops)", "[slicing_pipeline]") {
using Catch::Matchers::WithinRel;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
py::object host = py::module_::import("orca").attr("host");
const coord_t s = (coord_t) scale_(10.0);
auto make_square = [&]() {
py::object P = host.attr("Polygon")();
P.attr("append")(host.attr("Point")(0, 0));
P.attr("append")(host.attr("Point")(s, 0));
P.attr("append")(host.attr("Point")(s, s));
P.attr("append")(host.attr("Point")(0, s));
return host.attr("ExPolygon")(P);
};
const double area0 = (double) s * (double) s;
// rotate about the square's center preserves area
py::object ex = make_square();
py::object center = host.attr("Point")(s / 2, s / 2);
ex.attr("rotate")(py::float_(1.5707963267948966), center); // pi/2
CHECK_THAT(ex.attr("area")().cast<double>(), WithinRel(area0, 1e-6));
// uniform scale by 2 quadruples area (scale is about the origin)
py::object ex2 = make_square();
ex2.attr("scale")(py::float_(2.0));
CHECK_THAT(ex2.attr("area")().cast<double>(), WithinRel(4.0 * area0, 1e-6));
// translate preserves area
py::object ex3 = make_square();
ex3.attr("translate")(py::float_(1000.0), py::float_(-500.0));
CHECK_THAT(ex3.attr("area")().cast<double>(), WithinRel(area0, 1e-6));
// SurfaceCollection.append accumulates surfaces of a second type (the sample write-back path)
Slic3r::SurfaceCollection coll;
py::object cv = py::cast(&coll, py::return_value_policy::reference);
py::list g1; g1.append(make_square());
cv.attr("set")(g1, host.attr("SurfaceType").attr("stInternalSolid"));
py::list g2; g2.append(make_square());
cv.attr("append")(g2, host.attr("SurfaceType").attr("stTop"));
REQUIRE(coll.surfaces.size() == 2);
CHECK(coll.surfaces[0].surface_type == Slic3r::stInternalSolid);
CHECK(coll.surfaces[1].surface_type == Slic3r::stTop);
}
TEST_CASE("orca.host: in-place edit of surface.expolygon through a live collection persists to C++", "[slicing_pipeline]") {
using Catch::Matchers::WithinRel;
ensure_python_initialized();
import_orca_module();
py::gil_scoped_acquire gil;
const coord_t s = (coord_t) scale_(10.0);
// Live LayerRegion holding one surface (a 10mm square at the origin).
TestLayerRegion region;
Slic3r::ExPolygon sq;
sq.contour.points = { Slic3r::Point(0, 0), Slic3r::Point(s, 0),
Slic3r::Point(s, s), Slic3r::Point(0, s) };
region.slices.surfaces.emplace_back(Slic3r::Surface(Slic3r::stInternal, sq));
py::object lr = py::cast(static_cast<Slic3r::LayerRegion*>(&region),
py::return_value_policy::reference);
// Twistify's path: get the Surface through the live collection, mutate its expolygon in place.
py::object surf = lr.attr("slices").attr("surfaces").cast<py::list>()[0];
surf.attr("expolygon").attr("translate")(py::float_(1000.0), py::float_(0.0));
// The C++-side surface geometry reflects the Python in-place edit (proves the live ref).
const Slic3r::Surface& out = region.slices.surfaces.front();
CHECK(out.expolygon.contour.points[0].x() == 1000); // was 0
CHECK(out.expolygon.contour.points[0].y() == 0);
CHECK_THAT(out.expolygon.area(), WithinRel((double) s * (double) s, 1e-9)); // translate preserves area
}
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