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Nascent normals from model

pull/5522/head
Steve M 2024-03-30 14:42:32 -07:00
parent 2767cc8e95
commit 4be5bed039
2 changed files with 24 additions and 0 deletions
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19
code/AssetLib/USD/USDLoaderImplTinyusdz.cpp
View File

@ -106,6 +106,7 @@ void USDImporterImplTinyusdz::InternReadFile(
pScene->mMeshes[i] = new aiMesh();
verticesForMesh(render_scene, pScene, i);
facesForMesh(render_scene, pScene, i);
normalsForMesh(render_scene, pScene, i);
uvsForMesh(render_scene, pScene, i);
pScene->mRootNode->mMeshes[i] = static_cast<unsigned int>(i);
}
@ -142,6 +143,24 @@ void USDImporterImplTinyusdz::facesForMesh(
}
}
void USDImporterImplTinyusdz::normalsForMesh(
const tinyusdz::tydra::RenderScene &render_scene,
aiScene *pScene,
size_t meshIdx) {
pScene->mMeshes[meshIdx]->mNormals = new aiVector3D[pScene->mMeshes[meshIdx]->mNumVertices];
size_t faceVertIdxOffset = 0;
for (size_t faceIdx = 0; faceIdx < pScene->mMeshes[meshIdx]->mNumFaces; ++faceIdx) {
size_t vertIdx;
for (size_t j = 0; j < pScene->mMeshes[meshIdx]->mFaces[faceIdx].mNumIndices; ++j) {
vertIdx = pScene->mMeshes[meshIdx]->mFaces[faceIdx].mIndices[j];
pScene->mMeshes[meshIdx]->mNormals[vertIdx].x = render_scene.meshes[meshIdx].facevaryingNormals[faceVertIdxOffset + j][0];
pScene->mMeshes[meshIdx]->mNormals[vertIdx].y = render_scene.meshes[meshIdx].facevaryingNormals[faceVertIdxOffset + j][1];
pScene->mMeshes[meshIdx]->mNormals[vertIdx].z = render_scene.meshes[meshIdx].facevaryingNormals[faceVertIdxOffset + j][2];
}
faceVertIdxOffset += pScene->mMeshes[meshIdx]->mFaces[faceIdx].mNumIndices;
}
}
void USDImporterImplTinyusdz::uvsForMesh(
const tinyusdz::tydra::RenderScene &render_scene,
aiScene *pScene,

5
code/AssetLib/USD/USDLoaderImplTinyusdz.h
View File

@ -73,6 +73,11 @@ public:
aiScene *pScene,
size_t meshIdx);
void normalsForMesh(
const tinyusdz::tydra::RenderScene &render_scene,
aiScene *pScene,
size_t meshIdx);
void uvsForMesh(
const tinyusdz::tydra::RenderScene &render_scene,
aiScene *pScene,