bool USkeleton::MergeBonesToBoneTree(const USkeletalMesh* InSkeletalMesh, const TArray<int32> & RequiredRefBones)
{
// see if it needs all animation data to remap - only happens when bone structure CHANGED - added
bool bSuccess = false;
// clear cache data since it won't work anymore once this is done
ClearCacheData();
// if it's first time
if( BoneTree.Num() == 0 )
{
bSuccess = CreateReferenceSkeletonFromMesh(InSkeletalMesh, RequiredRefBones);
}
else
{
// can we play? - hierarchy matches
if( IsCompatibleMesh(InSkeletalMesh) )
{
// Exclude bones who do not have a parent.
TArray<int32> FilteredRequiredBones;
FAnimationRuntime::ExcludeBonesWithNoParents(RequiredRefBones, InSkeletalMesh->RefSkeleton, FilteredRequiredBones);
for (int32 Index=0; Index<FilteredRequiredBones.Num(); Index++)
{
const int32& MeshBoneIndex = FilteredRequiredBones[Index];
const int32& SkeletonBoneIndex = ReferenceSkeleton.FindBoneIndex(InSkeletalMesh->RefSkeleton.GetBoneName(MeshBoneIndex));
// Bone doesn't already exist. Add it.
if( SkeletonBoneIndex == INDEX_NONE )
{
FMeshBoneInfo NewMeshBoneInfo = InSkeletalMesh->RefSkeleton.GetRefBoneInfo()[MeshBoneIndex];
// Fix up ParentIndex for our new Skeleton.
if( ReferenceSkeleton.GetNum() == 0 )
{
NewMeshBoneInfo.ParentIndex = INDEX_NONE; // root
}
else
{
NewMeshBoneInfo.ParentIndex = ReferenceSkeleton.FindBoneIndex(InSkeletalMesh->RefSkeleton.GetBoneName(InSkeletalMesh->RefSkeleton.GetParentIndex(MeshBoneIndex)));
}
ReferenceSkeleton.Add(NewMeshBoneInfo, InSkeletalMesh->RefSkeleton.GetRefBonePose()[MeshBoneIndex]);
BoneTree.AddZeroed(1);
}
}
bSuccess = true;
}
}
// if succeed
if (bSuccess)
{
#if WITH_EDITOR
HandleSkeletonHierarchyChange();
#endif
}
return bSuccess;
}
void USkeleton::RemoveBonesFromSkeleton( const TArray<FName>& BonesToRemove, bool bRemoveChildBones )
{
TArray<int32> BonesRemoved = ReferenceSkeleton.RemoveBonesByName(BonesToRemove);
if(BonesRemoved.Num() > 0)
{
BonesRemoved.Sort();
for(int32 Index = BonesRemoved.Num()-1; Index >=0; --Index)
{
BoneTree.RemoveAt(Index);
}
HandleSkeletonHierarchyChange();
}
}
