I asked a question in the SolidEdge Forum and was pointed on this developer forum because it might fit the question better. Please take any information from the existing thread: http://community.plm.automation.siemens.com/t5/Solid-Edge-Forum/Get-Plane-as-NURBS-surface/m-p/30737...
If there are further questions about the problem, please don't hesitate to ask.
Thanks in advance
Go to Solution.
AFAIK, there are no direct methods in the API to convert any geometry into a NURB surface.
You can, of course, query the specific parameters for each type of geometry, like the origin and the normal of the plane, but the conversion has to be done by you.
I think OpenCASCADE is an Open Source project with an SDK function to convert any geometry to NURBS, except planes ;-)
That's what I suspected. Thank you very much for the information.