Bone transform at certain time/key

Development Character & Animation
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6

You can stick that piece of code pretty much anywhere and expose it to blueprints:

in the .h file (in a ‘public’ section) of the class you want to put this in:

UFUNCTION(BlueprintCallable, Category = "AnimData")
FTransform GetBoneTransformAtTime(UAnimSequence* MyAnimSequence, float AnimTime, int BoneIdx, bool bUseRawDataOnly);

in your .cpp file:

FTransform YourClass::GetBoneTransformAtTime(UAnimSequence* MyAnimSequence, float AnimTime, int BoneIdx, bool bUseRawDataOnly)
{
     const TArray<FTrackToSkeletonMap> & TrackToSkeletonMap = bUseRawDataOnly ? MyAnimSequence->TrackToSkeletonMapTable : MyAnimSequence->CompressedTrackToSkeletonMapTable;
 
     if ((TrackToSkeletonMap.Num() > 0) && (TrackToSkeletonMap[0].BoneTreeIndex == 0))
     {
         return MyAnimSequence->GetBoneTransform(BoneTransform, BoneIdx, AnimTime, bUseRawDataOnly);
    }
    return FTransform::Identity;
}

You can put it in an actor class, but you’d want to keep it generic so if your project has a ‘GameplayStatics’, it’s better there (you can create your own deriving from the Engine’s version).