chore(PxMesh): add polygon-based API

include/phoenix/cffi/Mesh.h

@@ -15,6 +15,20 @@ typedef phoenix::mesh PxMesh;
 typedef struct PxInternal_Mesh PxMesh;
 #endif
 
+typedef struct {
+	std::uint8_t is_portal;
+	std::uint8_t is_occluder;
+	std::uint8_t is_sector;
+	std::uint8_t should_relight;
+	std::uint8_t is_outdoor;
+	std::uint8_t is_ghost_occluder;
+	std::uint8_t is_dynamically_lit;
+	std::int16_t sector_index;
+
+	uint8_t is_lod;
+	uint8_t normal_axis;
+} PxPolygonFlags;
+
 // TODO: Lightmaps
 PXC_API PxMesh* pxMshLoad(PxBuffer* buffer);
 PXC_API PxMesh* pxMshLoadFromVfs(PxVfs const* vfs, char const* name);
@@ -31,3 +45,13 @@ PXC_API void pxMshGetFeature(PxMesh const* msh, uint32_t i, PxVec2* texture, uin
 PXC_API uint32_t const* pxMshGetPolygonMaterialIndices(PxMesh const* msh, uint32_t* length);
 PXC_API uint32_t const* pxMshGetPolygonFeatureIndices(PxMesh const* msh, uint32_t* length);
 PXC_API uint32_t const* pxMshGetPolygonVertexIndices(PxMesh const* msh, uint32_t* length);
+
+PXC_API uint32_t pxMshGetPolygonCount(PxMesh const* msh);
+PXC_API void pxMshGetPolygon(PxMesh const* msh,
+                             uint32_t idx,
+                             uint32_t* materialIndex,
+                             int32_t* lightmapIndex,
+                             PxPolygonFlags* flags,
+                             uint32_t const** vertexIndices,
+                             uint32_t const** featureIndices,
+                             uint32_t* vertexCount);

src/Mesh.cc

@@ -97,3 +97,34 @@ uint32_t const* pxMshGetPolygonVertexIndices(PxMesh const* msh, uint32_t* length
 	*length = (uint32_t) polys.vertex_indices.size();
 	return polys.vertex_indices.data();
 }
+
+uint32_t pxMshGetPolygonCount(PxMesh const* msh) {
+	return msh->geometry.size();
+}
+
+void pxMshGetPolygon(PxMesh const* msh,
+                     uint32_t idx,
+                     uint32_t* materialIndex,
+                     int32_t* lightmapIndex,
+                     PxPolygonFlags* flags,
+                     uint32_t const** vertexIndices,
+                     uint32_t const** featureIndices,
+                     uint32_t* vertexCount) {
+	auto& poly = msh->geometry[idx];
+	*materialIndex = poly.material;
+	*lightmapIndex = poly.lightmap;
+	*vertexIndices = poly.vertices.data();
+	*featureIndices = poly.features.data();
+	*vertexCount = poly.vertices.size();
+
+	flags->is_portal = poly.flags.is_portal;
+	flags->is_occluder = poly.flags.is_occluder;
+	flags->is_sector = poly.flags.is_sector;
+	flags->should_relight = poly.flags.should_relight;
+	flags->is_outdoor = poly.flags.is_outdoor;
+	flags->is_ghost_occluder = poly.flags.is_ghost_occluder;
+	flags->is_dynamically_lit = poly.flags.is_dynamically_lit;
+	flags->sector_index = poly.flags.sector_index;
+	flags->is_lod = poly.flags.is_lod;
+	flags->normal_axis = poly.flags.normal_axis;
+}