/** 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;
}
void FAnimationRuntime::ExcludeBonesWithNoParents(const TArray<int32> & BoneIndices, const FReferenceSkeleton& RefSkeleton, TArray<int32> & FilteredRequiredBones)
{
// Filter list, we only want bones that have their parents present in this array.
FilteredRequiredBones.Empty(BoneIndices.Num());
for (int32 Index=0; Index<BoneIndices.Num(); Index++)
{
const int32& BoneIndex = BoneIndices[Index];
// Always add root bone.
if( BoneIndex == 0 )
{
FilteredRequiredBones.Add(BoneIndex);
}
else
{
const int32 ParentBoneIndex = RefSkeleton.GetParentIndex(BoneIndex);
if( FilteredRequiredBones.Contains(ParentBoneIndex) )
{
FilteredRequiredBones.Add(BoneIndex);
}
else
{
UE_LOG(LogAnimation, Warning, TEXT("ExcludeBonesWithNoParents: Filtering out bone (%s) since parent (%s) is missing"),
*RefSkeleton.GetBoneName(BoneIndex).ToString(), *RefSkeleton.GetBoneName(ParentBoneIndex).ToString());
}
}
}
}
void OutputAnimationTransformDebugData(TArray<AnimationTransformDebug::FAnimationTransformDebugData> &TransformDebugData, int32 TotalNumKeys, const FReferenceSkeleton& RefSkeleton)
{
bool bShouldOutputToMessageLog = true;
for(int32 Key=0; Key<TotalNumKeys; ++Key)
{
// go through all bones and find
for(int32 BoneIndex=0; BoneIndex<TransformDebugData.Num(); ++BoneIndex)
{
FAnimationTransformDebugData& Data = TransformDebugData[BoneIndex];
int32 ParentIndex = RefSkeleton.GetParentIndex(Data.BoneIndex);
int32 ParentTransformDebugDataIndex = 0;
check(Data.RecalculatedLocalTransform.Num() == TotalNumKeys);
check(Data.SourceGlobalTransform.Num() == TotalNumKeys);
check(Data.SourceParentGlobalTransform.Num() == TotalNumKeys);
for(; ParentTransformDebugDataIndex<BoneIndex; ++ParentTransformDebugDataIndex)
{
if(ParentIndex == TransformDebugData[ParentTransformDebugDataIndex].BoneIndex)
{
FTransform ParentTransform = TransformDebugData[ParentTransformDebugDataIndex].RecalculatedLocalTransform[Key] * TransformDebugData[ParentTransformDebugDataIndex].RecalculatedParentTransform[Key];
Data.RecalculatedParentTransform.Add(ParentTransform);
break;
}
}
// did not find Parent
if(ParentTransformDebugDataIndex == BoneIndex)
{
Data.RecalculatedParentTransform.Add(FTransform::Identity);
}
check(Data.RecalculatedParentTransform.Num() == Key+1);
FTransform GlobalTransform = Data.RecalculatedLocalTransform[Key] * Data.RecalculatedParentTransform[Key];
// makes more generous on the threshold.
if(GlobalTransform.Equals(Data.SourceGlobalTransform[Key], 0.1f) == false)
{
// so that we don't spawm with this message
if(bShouldOutputToMessageLog)
{
UnFbx::FFbxImporter* FFbxImporter = UnFbx::FFbxImporter::GetInstance();
// now print information - it doesn't match well, find out what it is
FFbxImporter->AddTokenizedErrorMessage(FTokenizedMessage::Create(EMessageSeverity::Warning, FText::Format(LOCTEXT("FBXImport_TransformError", "Imported bone transform is different from original. Please check Output Log to see detail of error. "),
FText::FromName(Data.BoneName), FText::AsNumber(Data.BoneIndex), FText::FromString(Data.SourceGlobalTransform[Key].ToString()), FText::FromString(GlobalTransform.ToString()))), FFbxErrors::Animation_TransformError);
bShouldOutputToMessageLog = false;
}
// now print information - it doesn't match well, find out what it is
UE_LOG(LogFbx, Warning, TEXT("IMPORT TRANSFORM ERROR : Bone (%s:%d) \r\nSource Global Transform (%s), \r\nConverted Global Transform (%s)"),
*Data.BoneName.ToString(), Data.BoneIndex, *Data.SourceGlobalTransform[Key].ToString(), *GlobalTransform.ToString());
}
}
}
}
/**
* 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;
}