virtual void PopulateDeltas ( const [TArray](API\Runtime\Core\Containers\TArray)< [FMorphTargetDelta](API\Runtime\Engine\Animation\FMorphTargetDelta) > & Deltas, const int32 LODIndex, const [TArray](API\Runtime\Core\Containers\TArray)< struct [FSkelMeshSection](API\Runtime\Engine\Rendering\FSkelMeshSection) > & Sections, const bool bCompareNormal, const bool bGeneratedByReductionSetting, const float PositionThreshold )