Point
 | 
| Name | Description | |
|---|---|---|
| GetTangentVector(Vector2d) | Maps the specified vector to the tangent plane of the surface at the point corresponding to the parameter. Currently not implemented. | |
| GetTangentVector(Vector2d, Point2d) | Maps the specified vector to the tangent plane of the surface at the specified parameter value. Currently not implemented. | |
| GetTangentVector(Vector2d, Surface, Point2d) | Maps the specified vector to the tangent plane of the surface at the specified parameter value. Currently not implemented. |