| Name | Value | Description |
| ConeSurfaceType | 2 | A cone surface. |
| CylinderSurfaceType | 1 | A cylindrical surface. |
| EllipticalConeSurfaceType | 6 | An elliptical cone surface. |
| EllipticalCylinderSurfaceType | 5 | An elliptical cylinder surface. |
| NurbsSurfaceType | 7 | A NURBS surface. |
| PlaneSurfaceType | 0 | A planar surface. |
| SphereSurfaceType | 3 | A spherical surface. |
| TorusSurfaceType | 4 | A torus surface. |