The  SuperD  modeler employs a recursive subdivision, modeling interface for design, but without the troublesome extraordinary points or patch clusters at those points. The key to SuperD is use of new N-sided surface patches, which correspond to the mesh topology. The N-sided patches also enable G 2  continuity, good triangulation and efficient mobile device implementation.
['Alyn P. Rockwood', 'Kun Gao', 'Michael Farrell']
SuperD: SubD modeling without subdivision