|   | 
Name | 
Description | 
 
 | 
GetVDerivative(Int32)
 | 
Returns the specified derivative of the surface in the V
direction at the point corresponding to the parameter. Currently
not implemented. | 
 
 | 
GetVDerivative(Int32,
Point2d)
 | 
Returns the specified derivative of the surface in the V
direction at the point corresponding to the parameter. The point
argument updates the parameter of the surface. Currently not
implemented. | 
  
 | 
GetVDerivative(Int32,
Surface, Point2d)
 | 
Returns the specified derivative of the surface in the V
direction at the point corresponding to the parameter. Currently
not implemented. |