xatlas: Sync with upstream ec707faea

https://github.com/jpcy/xatlas/commit/ec707faeac3b95e6b416076a9509718cce105b6a

thirdparty/README.md

@@ -683,12 +683,12 @@ File extracted from upstream release tarball:
 ## xatlas
 
 - Upstream: https://github.com/jpcy/xatlas
-- Version: git (5571fc7ef0d06832947c0a935ccdcf083f7a9264, 2020)
+- Version: git (ec707faeac3b95e6b416076a9509718cce105b6a, 2021)
 - License: MIT
 
 Files extracted from upstream source:
 
-- `xatlas.{cpp,h}`
+- `source/xatlas/xatlas.{cpp,h}`
 - `LICENSE`
 
 

thirdparty/xatlas/xatlas.h

@@ -36,7 +36,8 @@ Copyright NVIDIA Corporation 2006 -- Ignacio Castano <[email protected]>
 
 namespace xatlas {
 
-enum class ChartType {
+enum class ChartType
+{
 	Planar,
 	Ortho,
 	LSCM,
@@ -45,7 +46,8 @@ enum class ChartType {
 };
 
 // A group of connected faces, belonging to a single atlas.
-struct Chart {
+struct Chart
+{
 	uint32_t *faceArray;
 	uint32_t atlasIndex; // Sub-atlas index.
 	uint32_t faceCount;
@@ -54,7 +56,8 @@ struct Chart {
 };
 
 // Output vertex.
-struct Vertex {
+struct Vertex
+{
 	int32_t atlasIndex; // Sub-atlas index. -1 if the vertex doesn't exist in any atlas.
 	int32_t chartIndex; // -1 if the vertex doesn't exist in any chart.
 	float uv[2]; // Not normalized - values are in Atlas width and height range.
@@ -62,7 +65,8 @@ struct Vertex {
 };
 
 // Output mesh.
-struct Mesh {
+struct Mesh
+{
 	Chart *chartArray;
 	uint32_t *indexArray;
 	Vertex *vertexArray;
@@ -77,7 +81,8 @@ static const uint32_t kImageIsBilinearBit = 0x40000000;
 static const uint32_t kImageIsPaddingBit = 0x20000000;
 
 // Empty on creation. Populated after charts are packed.
-struct Atlas {
+struct Atlas
+{
 	uint32_t *image;
 	Mesh *meshes; // The output meshes, corresponding to each AddMesh call.
 	float *utilization; // Normalized atlas texel utilization array. E.g. a value of 0.8 means 20% empty space. atlasCount in length.
@@ -94,13 +99,15 @@ Atlas *Create();
 
 void Destroy(Atlas *atlas);
 
-enum class IndexFormat {
+enum class IndexFormat
+{
 	UInt16,
 	UInt32
 };
 
 // Input mesh declaration.
-struct MeshDecl {
+struct MeshDecl
+{
 	const void *vertexPositionData = nullptr;
 	const void *vertexNormalData = nullptr; // optional
 	const void *vertexUvData = nullptr; // optional. The input UVs are provided as a hint to the chart generator.
@@ -131,7 +138,8 @@ struct MeshDecl {
 	float epsilon = 1.192092896e-07F;
 };
 
-enum class AddMeshError {
+enum class AddMeshError
+{
 	Success, // No error.
 	Error, // Unspecified error.
 	IndexOutOfRange, // An index is >= MeshDecl vertexCount.
@@ -145,7 +153,8 @@ AddMeshError AddMesh(Atlas *atlas, const MeshDecl &meshDecl, uint32_t meshCountH
 // Wait for AddMesh async processing to finish. ComputeCharts / Generate call this internally.
 void AddMeshJoin(Atlas *atlas);
 
-struct UvMeshDecl {
+struct UvMeshDecl
+{
 	const void *vertexUvData = nullptr;
 	const void *indexData = nullptr; // optional
 	const uint32_t *faceMaterialData = nullptr; // Optional. Overlapping UVs should be assigned a different material. Must be indexCount / 3 in length.
@@ -161,7 +170,8 @@ AddMeshError AddUvMesh(Atlas *atlas, const UvMeshDecl &decl);
 // Custom parameterization function. texcoords initial values are an orthogonal parameterization.
 typedef void (*ParameterizeFunc)(const float *positions, float *texcoords, uint32_t vertexCount, const uint32_t *indices, uint32_t indexCount);
 
-struct ChartOptions {
+struct ChartOptions
+{
 	ParameterizeFunc paramFunc = nullptr;
 
 	float maxChartArea = 0.0f; // Don't grow charts to be larger than this. 0 means no limit.
@@ -184,7 +194,8 @@ struct ChartOptions {
 // Call after all AddMesh calls. Can be called multiple times to recompute charts with different options.
 void ComputeCharts(Atlas *atlas, ChartOptions options = ChartOptions());
 
-struct PackOptions {
+struct PackOptions
+{
 	// Charts larger than this will be scaled down. 0 means no limit.
 	uint32_t maxChartSize = 0;
 
@@ -227,7 +238,8 @@ void PackCharts(Atlas *atlas, PackOptions packOptions = PackOptions());
 void Generate(Atlas *atlas, ChartOptions chartOptions = ChartOptions(), PackOptions packOptions = PackOptions());
 
 // Progress tracking.
-enum class ProgressCategory {
+enum class ProgressCategory
+{
 	AddMesh,
 	ComputeCharts,
 	PackCharts,