virtual bool CutWithoutDelete ( bool bSplitVerticesAtPlane, float OffsetSeparatedPortion, [TDynamicMeshScalarTriangleAttribute](API\Runtime\GeometryCore\DynamicMesh\TDynamicMeshScalarTriangleAttrib-)< int > * TriLabels, int NewLabelStartID, bool bAddBoundariesFirstHalf, bool bAddBoundariesSecondHalf )