AcGeEntity3d AcGeSurface AcGeCone AcGeCylinder AcGeExternalBoundedSurface AcGeExternalSurface AcGeNurbSurface AcGeOffsetSurface AcGePlanarEnt AcGeSphere AcGeTorus
class AcGeSurface : public AcGeEntity3d;
gesurf.h
AcGeSurface class is an abstract base class for all other parametric surfaces.