void FBXSceneInstance::InitInstance()
{
// Bounding Box
m_BoundingBox = mScene->m_BoundingBox;
// Models
for(unsigned int i = 0; i < mScene->GetModelCount(); i++)
{
Model* srcModel = mScene->GetModel(i);
m_Models.Add(srcModel->GetName(), new Model(srcModel));
}
// Copy Skeleton
if ( mScene->GetSkeleton() )
{
Skeleton* newSkeleton = new Skeleton();
for( unsigned int x = 0; x < mScene->GetSkeleton()->GetBoneCount(); ++x )
{
SkeletonBone* sourceBone = mScene->GetSkeleton()->GetSkeletonBone(x);
SkeletonBone* targetBone = new SkeletonBone(
sourceBone->GetName(),
sourceBone->GetParentBoneIndex(),
newSkeleton);
newSkeleton->AddSkeletonBone( targetBone );
}
newSkeleton->BuildBoneHierarchy();
for( unsigned int x = 0; x < newSkeleton->GetBoneCount(); ++x )
{
SkeletonBone* sourceBone = mScene->GetSkeleton()->GetSkeletonBone(x);
SkeletonBone* targetBone = newSkeleton->GetSkeletonBone(x);
targetBone->SetBindPoseTransform2(sourceBone->GetBindPoseTransform2());
targetBone->SetBoneReferenceTransform2(sourceBone->GetBoneReferenceTransform2());
targetBone->m_AnimationKeyFrames = sourceBone->m_AnimationKeyFrames;
targetBone->SetBoundingBoxData(sourceBone->m_AABB);
}
// Update My Skeleton
m_pSkeleton = newSkeleton;
// Update My Animation
m_pAnimationController = new AnimationController(mScene->m_pAnimationController);
}
// Curves
m_Curves = &mScene->m_Curves;
}
//--------------------------------------------------------------------------------------
void FBXScene::ProcessBoneWeights(FbxSkin* pFBXSkin, std::vector<BoneWeights>& meshBoneWeights)
{
FbxCluster::ELinkMode linkMode = FbxCluster::eNormalize; //Default link mode
std::vector<BoneWeights> skinBoneWeights(meshBoneWeights.size(), BoneWeights());
unsigned int nClusterCount = pFBXSkin->GetClusterCount();
for( unsigned int i = 0; i < nClusterCount; ++i )
{
FbxCluster* pFBXCluster = pFBXSkin->GetCluster(i);
if( !pFBXCluster )
continue;
linkMode = pFBXCluster->GetLinkMode();
FbxNode* pLinkNode = pFBXCluster->GetLink();
if( !pLinkNode )
continue;
int nBoneIndex = m_pSkeleton->FindBoneIndex(pLinkNode->GetName());
if( nBoneIndex < 0 )
continue;
SkeletonBone* pSkeletonBone = m_pSkeleton->GetSkeletonBone(nBoneIndex);
FbxAMatrix matClusterTransformMatrix;
FbxAMatrix matClusterLinkTransformMatrix;
pFBXCluster->GetTransformMatrix(matClusterTransformMatrix);
pFBXCluster->GetTransformLinkMatrix(matClusterLinkTransformMatrix);
pSkeletonBone->SetBindPoseTransform2(matClusterLinkTransformMatrix);
pSkeletonBone->SetBoneReferenceTransform2(matClusterTransformMatrix);
int* indices = pFBXCluster->GetControlPointIndices();
double* weights = pFBXCluster->GetControlPointWeights();
for( int j = 0; j < pFBXCluster->GetControlPointIndicesCount(); ++j )
{
skinBoneWeights[indices[j]].AddBoneWeight(nBoneIndex, (float)weights[j]);
}
}
switch(linkMode)
{
case FbxCluster::eNormalize: //Normalize so weight sum is 1.0.
for( unsigned int i = 0; i < skinBoneWeights.size(); ++i )
{
skinBoneWeights[i].Normalize();
}
break;
case FbxCluster::eAdditive: //Not supported yet. Do nothing
break;
case FbxCluster::eTotalOne:
//The weight sum should already be 1.0. Do nothing.
break;
}
for( unsigned int i = 0; i < meshBoneWeights.size(); ++i )
{
meshBoneWeights[i].AddBoneWeights(skinBoneWeights[i]);
}
}