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xatlas_web.cpp
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xatlas_web.cpp
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#include "xatlas_web.h"
xatlas::Atlas *atlas;
xatlas::MeshDecl *meshDecl;
xatlas::UvMeshDecl *uvMeshDecl;
uint32_t nextMeshId = 0;
bool printProgress = false;
static bool ProgressCallback(xatlas::ProgressCategory category, int progress, void *userData)
{
if(printProgress) {
printf("%s [", xatlas::StringForEnum(category));
for (int i = 0; i < 10; i++)
printf(progress / ((i + 1) * 10) ? "*" : " ");
printf("] %d%%\n", progress);
}
onAtlasProgress((int)category, progress);
return true;
}
void setProgressLogging(bool f){
printProgress = f;
}
void createAtlas() {
atlas = xatlas::Create();
xatlas::SetProgressCallback(atlas, ProgressCallback, nullptr);
}
MeshBufferInfo createMesh(uint32_t vertexCount, uint32_t indexCount, bool normals, bool uvs) {
MeshBufferInfo meshBufferInfo;
meshBufferInfo.meshId = nextMeshId++;
meshDecl = new xatlas::MeshDecl;
meshDecl->vertexCount = vertexCount;
meshDecl->indexCount = indexCount;
meshDecl->indexData = new uint16_t[indexCount];
meshDecl->indexFormat = xatlas::IndexFormat::UInt16;
meshBufferInfo.indexOffset = (uint32_t) meshDecl->indexData;
meshDecl->vertexPositionData = new float[vertexCount * 3];
meshDecl->vertexPositionStride = sizeof(float) * 3;
meshBufferInfo.positionOffset = (uint32_t) meshDecl->vertexPositionData;
if (normals) {
meshDecl->vertexNormalData = new float[vertexCount * 3];
meshDecl->vertexNormalStride = sizeof(float) * 3;
meshBufferInfo.normalOffset = (uint32_t) meshDecl->vertexNormalData;
}
if (uvs) {
meshDecl->vertexUvData = new float[vertexCount * 2];
meshDecl->vertexUvStride = sizeof(float) * 2;
meshBufferInfo.uvOffset = (uint32_t) meshDecl->vertexUvData;
}
return meshBufferInfo;
}
UvMeshBufferInfo createUvMesh(int vertexCount, int indexCount) {
UvMeshBufferInfo uvMeshBufferInfo;
uvMeshBufferInfo.meshId = nextMeshId++;
uvMeshDecl = new xatlas::UvMeshDecl;
uvMeshDecl->vertexCount = vertexCount;
uvMeshDecl->indexCount = indexCount;
uvMeshDecl->indexData = new uint16_t[indexCount];
uvMeshDecl->indexFormat = xatlas::IndexFormat::UInt16;
uvMeshBufferInfo.indexOffset = (uint32_t) uvMeshDecl->indexData;
uvMeshDecl->vertexUvData = new float[vertexCount * 2];
uvMeshDecl->vertexStride = sizeof(float) * 2;
uvMeshBufferInfo.uvOffset = (uint32_t) uvMeshDecl->vertexUvData;
return uvMeshBufferInfo;
}
uint32_t addMesh() {
if (meshDecl == nullptr) return 5;
uint32_t mesh = (uint32_t) xatlas::AddMesh(atlas, *meshDecl);
delete[] (float *) meshDecl->vertexUvData;
delete[] (float *) meshDecl->vertexNormalData;
delete[] (float *) meshDecl->vertexPositionData;
delete[] (uint16_t *) meshDecl->indexData;
delete meshDecl;
meshDecl = nullptr;
return mesh;
}
uint32_t addUvMesh() {
if (uvMeshDecl == nullptr) return 5;
uint32_t mesh = (uint32_t) xatlas::AddUvMesh(atlas, *uvMeshDecl);
delete[] (float *) uvMeshDecl->vertexUvData;
delete[] (uint16_t *) uvMeshDecl->indexData;
delete uvMeshDecl;
uvMeshDecl = nullptr;
return mesh;
}
void computeCharts(const xatlas::ChartOptions chartOptions = defaultChartOptions()){
xatlas::ComputeCharts(atlas, chartOptions);
}
void packCharts(const xatlas::PackOptions packOptions=defaultPackOptions()){
xatlas::PackCharts(atlas, packOptions);
}
void generateAtlas(const xatlas::ChartOptions chartOptions = defaultChartOptions(), const xatlas::PackOptions packOptions=defaultPackOptions()) {
xatlas::Generate(atlas, chartOptions, packOptions);
}
xatlas::ChartOptions defaultChartOptions(){
return xatlas::ChartOptions();
}
xatlas::PackOptions defaultPackOptions(){
return xatlas::PackOptions();
}
AtlasMeshBufferInfo getMeshData(uint32_t meshId) {
const xatlas::Mesh &mesh = atlas->meshes[meshId];
uint32_t *originalIndexArray = new uint32_t[mesh.vertexCount];
float *uvArray = new float[mesh.vertexCount * 2];
for (uint32_t i = 0; i < mesh.vertexCount; i++) {
const xatlas::Vertex &vertex = mesh.vertexArray[i];
originalIndexArray[i] = vertex.xref;
uvArray[i * 2] = vertex.uv[0] / atlas->width;
uvArray[i * 2 + 1] = vertex.uv[1] / atlas->height;
}
AtlasMeshBufferInfo atlasMeshBufferInfo;
atlasMeshBufferInfo.newVertexCount = mesh.vertexCount;
atlasMeshBufferInfo.newIndexCount = mesh.indexCount;
atlasMeshBufferInfo.indexOffset = (uint32_t) mesh.indexArray;
atlasMeshBufferInfo.originalIndexOffset = (uint32_t) originalIndexArray;
atlasMeshBufferInfo.uvOffset = (uint32_t) uvArray;
return atlasMeshBufferInfo;
}
void destroyMeshData(const AtlasMeshBufferInfo atlasMeshBufferInfo) {
delete[] (uint32_t *) atlasMeshBufferInfo.originalIndexOffset;
delete[] (float *) atlasMeshBufferInfo.uvOffset;
}
void destroyAtlas() {
xatlas::Destroy(atlas);
nextMeshId = 0;
}
#ifdef SANITIZE_ADDRESS_CHECK
#include <sanitizer/lsan_interface.h>
#else
void __lsan_do_recoverable_leak_check() {}
#endif
EMSCRIPTEN_BINDINGS(xatlas) {
emscripten::value_object<MeshBufferInfo>("MeshBufferInfo")
.field("meshId", &MeshBufferInfo::meshId)
.field("indexOffset", &MeshBufferInfo::indexOffset)
.field("positionOffset", &MeshBufferInfo::positionOffset)
.field("normalOffset", &MeshBufferInfo::normalOffset)
.field("uvOffset", &MeshBufferInfo::uvOffset);
emscripten::value_object<UvMeshBufferInfo>("UvMeshBufferInfo")
.field("meshId", &UvMeshBufferInfo::meshId)
.field("indexOffset", &UvMeshBufferInfo::indexOffset)
.field("uvOffset", &UvMeshBufferInfo::uvOffset);
emscripten::value_object<AtlasMeshBufferInfo>("AtlasMeshBufferInfo")
.field("newVertexCount", &AtlasMeshBufferInfo::newVertexCount)
.field("newIndexCount", &AtlasMeshBufferInfo::newIndexCount)
.field("indexOffset", &AtlasMeshBufferInfo::indexOffset)
.field("originalIndexOffset", &AtlasMeshBufferInfo::originalIndexOffset)
.field("uvOffset", &AtlasMeshBufferInfo::uvOffset);
emscripten::value_object<xatlas::ChartOptions>("ChartOptions")
.field("maxChartArea", &xatlas::ChartOptions::maxChartArea)
.field("maxBoundaryLength", &xatlas::ChartOptions::maxBoundaryLength)
.field("normalDeviationWeight", &xatlas::ChartOptions::normalDeviationWeight)
.field("roundnessWeight", &xatlas::ChartOptions::roundnessWeight)
.field("straightnessWeight", &xatlas::ChartOptions::straightnessWeight)
.field("normalSeamWeight", &xatlas::ChartOptions::normalSeamWeight)
.field("textureSeamWeight", &xatlas::ChartOptions::textureSeamWeight)
.field("maxCost", &xatlas::ChartOptions::maxCost)
.field("maxIterations", &xatlas::ChartOptions::maxIterations)
.field("useInputMeshUvs", &xatlas::ChartOptions::useInputMeshUvs)
.field("fixWinding", &xatlas::ChartOptions::fixWinding)
;
emscripten::value_object<xatlas::PackOptions>("PackOptions")
.field("maxChartSize", &xatlas::PackOptions::maxChartSize)
.field("padding", &xatlas::PackOptions::padding)
.field("texelsPerUnit", &xatlas::PackOptions::texelsPerUnit)
.field("resolution", &xatlas::PackOptions::resolution)
.field("bilinear", &xatlas::PackOptions::bilinear)
.field("blockAlign", &xatlas::PackOptions::blockAlign)
.field("bruteForce", &xatlas::PackOptions::bruteForce)
.field("createImage", &xatlas::PackOptions::createImage)
.field("rotateChartsToAxis", &xatlas::PackOptions::rotateChartsToAxis)
.field("rotateCharts", &xatlas::PackOptions::rotateCharts)
;
emscripten::function("createAtlas", &createAtlas);
emscripten::function("createMesh", &createMesh);
emscripten::function("createUvMesh", &createUvMesh);
emscripten::function("addMesh", &addMesh);
emscripten::function("addUvMesh", &addUvMesh);
emscripten::function("generateAtlas", &generateAtlas);
emscripten::function("computeCharts", &computeCharts);
emscripten::function("packCharts", &packCharts);
emscripten::function("getMeshData", &getMeshData);
emscripten::function("destroyAtlas", &destroyAtlas);
emscripten::function("destroyMeshData", &destroyMeshData);
emscripten::function("defaultChartOptions", &defaultChartOptions);
emscripten::function("defaultPackOptions", &defaultPackOptions);
emscripten::function("setProgressLogging", &setProgressLogging);
emscripten::function("doLeakCheck", &__lsan_do_recoverable_leak_check);
}