/HierarchicalSurface.java/1.3/Thu Jun 24 18:07:41 2010//
/ProgressiveSurface.java/1.3/Thu Jun 24 17:25:01 2010//
/SelfIntersectingPreventionProgressiveSurface.java/1.3/Thu Jun 24 17:25:01 2010//
/SphericalArc.java/1.3/Thu Jun 24 17:25:01 2010//
D
