enum eControl{eNone, eLength, eLength2D, eFreeBorders, eFreeEdges, eFreeNodes,
eFreeFaces, eMultiConnection, eArea, eTaper, eAspectRatio,
eMinimumAngle, eWarping, eSkew, eAspectRatio3D, eMultiConnection2D, eVolume3D,
enum eControl{eNone, eLength, eLength2D, eFreeBorders, eFreeEdges, eFreeNodes,
eFreeFaces, eMultiConnection, eArea, eTaper, eAspectRatio,
eMinimumAngle, eWarping, eSkew, eAspectRatio3D, eMultiConnection2D, eVolume3D,