| Name | Value | Description |
| Arc3DCurveType | 1 | Transient 3D arc. |
| Circle3DCurveType | 2 | Transient 3D circle. |
| Ellipse3DCurveType | 3 | Transient 3D ellipse. |
| EllipticalArc3DCurveType | 4 | Transient 3D elliptical arc. |
| InfiniteLine3DCurveType | 5 | Transient 3D infinite line. |
| Line3DCurveType | 0 | Transient 3D line segment. |
| NurbsCurve3DCurveType | 6 | Transient 3D NURBS curve. |