|  GetBSpline2dData | Returns the poles, weights, and knots that fully define a non-uniform, rational B-Spline object. | 
|  GetBSpline2dInfo | Returns overall information related to the referenced B-Spline object. | 
|  GetIsClosed | Specifies whether or not the referenced curve is closed. | 
|  GetIsPeriodic | Returns True if the referenced object is periodic. | 
|  GetNumKnots | Returns the number of knots in the referenced object. | 
|  GetNumPoles | Returns the number of poles for the referenced object. | 
|  GetOrder | Returns the order for the referenced object. |