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export inverseBindMatrix Data for skins

pull/1024/head
Angelo Scandaliato 2016-10-06 12:56:34 -07:00
parent 42a8d58f45
commit f59b8b3a59
2 changed files with 20 additions and 10 deletions
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4
code/glTFAssetWriter.inl
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@ -439,6 +439,10 @@ namespace glTF {
obj.AddMember("bindShapeMatrix", MakeValue(val, b.bindShapeMatrix.value, w.mAl).Move(), w.mAl);
}
if (b.inverseBindMatrices) {
obj.AddMember("inverseBindMatrices", Value(b.inverseBindMatrices->id, w.mAl).Move(), w.mAl);
}
}
inline void Write(Value& obj, Technique& b, AssetWriter& w)

26
code/glTFExporter.cpp
View File

@ -144,7 +144,7 @@ glTFExporter::glTFExporter(const char* filename, IOSystem* pIOSystem, const aiSc
ExportAnimations();
// ExportSkins();
ExportSkins();
glTF::AssetWriter writer(*mAsset);
@ -843,41 +843,47 @@ void glTFExporter::ExportAnimations()
void glTFExporter::ExportSkins()
{
Ref<Buffer> bufferRef = mAsset->buffers.Get(unsigned (0));
for (unsigned int idx_mesh = 0; idx_mesh < mScene->mNumMeshes; ++idx_mesh) {
const aiMesh* aim = mScene->mMeshes[idx_mesh];
if(!aim->HasBones()) { continue; } // skip to next mesh if no bones.
if(!aim->HasBones()) { continue; } // skip to next mesh if no bones exist.
std::string skinName = aim->mName.C_Str();
skinName = mAsset->FindUniqueID(skinName, "skin");
Ref<Skin> skinRef = mAsset->skins.Create(skinName);
skinRef->name = skinName;
mat4* inverseBindMatricesData = new mat4[aim->mNumBones];
for (unsigned int idx_bone = 0; idx_bone < aim->mNumBones; ++idx_bone) {
const aiBone* aib = aim->mBones[idx_bone];
// aib->mName =====> skinRef->jointNames
// Find the node with id = mName.
Ref<Node> nodeRef = mAsset->nodes.Get(aib->mName.C_Str());
nodeRef->jointName = "joint_" + std::to_string(idx_bone);
skinRef->jointNames.push_back("joint_" + std::to_string(idx_bone));
std::cout << "Node->id " << nodeRef->id << "\n";
// Identity Matrix =====> skinRef->bindShapeMatrix
// Temporary. Hard-coded identity matrix here
skinRef->bindShapeMatrix.isPresent = true;
// CopyValue(n->mTransformation, skinRef->bindShapeMatrix.value);
// aiIdentityMatrix4(skinRef->bindShapeMatrix.value);
IdentityMatrix4(skinRef->bindShapeMatrix.value);
// skinRef->bindShapeMatrix;
// skinRef->inverseBindMatrices;
// aib->mOffsetMatrix =====> skinRef->inverseBindMatrices
CopyValue(aib->mOffsetMatrix, inverseBindMatricesData[idx_bone]);
// aib->mNumWeights;
// aib->mOffsetMatrix;
// aib->mWeights;
} // End: for-loop mNumMeshes
Ref<Accessor> invBindMatrixAccessor = ExportAnimationData(*mAsset, skinName, bufferRef, aim->mNumBones, inverseBindMatricesData, AttribType::MAT4, AttribType::MAT4, ComponentType_FLOAT);
if (invBindMatrixAccessor) skinRef->inverseBindMatrices = invBindMatrixAccessor;
} // End: for-loop mNumMeshes
}