/** Check that root bone is the same, and that any bones that are common have the correct parent. */
bool SkeletonsAreCompatible( const FReferenceSkeleton& NewSkel, const FReferenceSkeleton& ExistSkel )
{
if(NewSkel.GetBoneName(0) != ExistSkel.GetBoneName(0))
{
UnFbx::FFbxImporter* FFbxImporter = UnFbx::FFbxImporter::GetInstance();
FFbxImporter->AddTokenizedErrorMessage(FTokenizedMessage::Create(EMessageSeverity::Error, FText::Format(LOCTEXT("MeshHasDifferentRoot", "Root Bone is '{0}' instead of '{1}'.\nDiscarding existing LODs."),
FText::FromName(NewSkel.GetBoneName(0)), FText::FromName(ExistSkel.GetBoneName(0)))));
return false;
}
for(int32 i=1; i<NewSkel.GetNum(); i++)
{
// See if bone is in both skeletons.
int32 NewBoneIndex = i;
FName NewBoneName = NewSkel.GetBoneName(NewBoneIndex);
int32 BBoneIndex = ExistSkel.FindBoneIndex(NewBoneName);
// If it is, check parents are the same.
if(BBoneIndex != INDEX_NONE)
{
FName NewParentName = NewSkel.GetBoneName( NewSkel.GetParentIndex(NewBoneIndex) );
FName ExistParentName = ExistSkel.GetBoneName( ExistSkel.GetParentIndex(BBoneIndex) );
if(NewParentName != ExistParentName)
{
UnFbx::FFbxImporter* FFbxImporter = UnFbx::FFbxImporter::GetInstance();
FFbxImporter->AddTokenizedErrorMessage(FTokenizedMessage::Create(EMessageSeverity::Error, FText::Format(LOCTEXT("MeshHasDifferentRoot", "Root Bone is '{0}' instead of '{1}'.\nDiscarding existing LODs."),
FText::FromName(NewBoneName), FText::FromName(NewParentName))));
return false;
}
}
}
return true;
}
/**
* Process and fill in the mesh ref skeleton bone hierarchy using the raw binary import data
*
* @param RefSkeleton - [out] reference skeleton hierarchy to update
* @param SkeletalDepth - [out] depth of the reference skeleton hierarchy
* @param ImportData - raw binary import data to process
* @return true if the operation completed successfully
*/
bool ProcessImportMeshSkeleton(FReferenceSkeleton& RefSkeleton, int32& SkeletalDepth, FSkeletalMeshImportData& ImportData)
{
TArray <VBone>& RefBonesBinary = ImportData.RefBonesBinary;
// Setup skeletal hierarchy + names structure.
RefSkeleton.Empty();
// Digest bones to the serializable format.
for( int32 b=0; b<RefBonesBinary.Num(); b++ )
{
const VBone & BinaryBone = RefBonesBinary[ b ];
const FString BoneName = FSkeletalMeshImportData::FixupBoneName( BinaryBone.Name );
const FMeshBoneInfo BoneInfo(FName(*BoneName, FNAME_Add, true), BinaryBone.ParentIndex);
const FTransform BoneTransform(BinaryBone.BonePos.Orientation, BinaryBone.BonePos.Position, FVector(1.f));
if(RefSkeleton.FindBoneIndex(BoneInfo.Name) != INDEX_NONE)
{
UnFbx::FFbxImporter* FFbxImporter = UnFbx::FFbxImporter::GetInstance();
FFbxImporter->AddTokenizedErrorMessage(FTokenizedMessage::Create(EMessageSeverity::Error, FText::Format(LOCTEXT("SkeletonHasDuplicateBones", "Skeleton has non-unique bone names.\nBone named '{0}' encountered more than once."), FText::FromName(BoneInfo.Name))));
return false;
}
RefSkeleton.Add(BoneInfo, BoneTransform);
}
// Add hierarchy index to each bone and detect max depth.
SkeletalDepth = 0;
TArray<int32> SkeletalDepths;
SkeletalDepths.Empty( RefBonesBinary.Num() );
SkeletalDepths.AddZeroed( RefBonesBinary.Num() );
for( int32 b=0; b < RefSkeleton.GetNum(); b++ )
{
int32 Parent = RefSkeleton.GetParentIndex(b);
int32 Depth = 1.0f;
SkeletalDepths[b] = 1.0f;
if( Parent != INDEX_NONE )
{
Depth += SkeletalDepths[Parent];
}
if( SkeletalDepth < Depth )
{
SkeletalDepth = Depth;
}
SkeletalDepths[b] = Depth;
}
return true;
}