int function ( ) { return nU ; }
get number of controlpoints in u direction concode_field_sep int nU concode_elem_sep Vec4D[][] cps concode_elem_sep int nV concode_field_sep Vec3D computeCentroid concode_elem_sep void set concode_elem_sep Vec4D[][] getControlPoints concode_elem_sep void center concode_elem_sep Vec4D get concode_elem_sep int vLength