Getting surface of a cylinder

[Eugine Halep]

Hi
I am trying to access surface of a cylinder like

Code: Select all

IStdShape_DG stdshape = model as IStdShape_DG;
IEntity_DG myCyl = stdshape.Cylinder(_R, _R, _h);
IBSplineSurface_DG surf = myCyl as IBSplineSurface_DG; 

I get an exception on the last line. what is wrong here?
Thank you

[Oleg Skvortsov]

Surface belongs to face. You need to get the face first.

Code: Select all

IBRepGeometry_DG brepGeom = myCy.GetGeometry() as IBRepGeometry_DG;
IBRepShape_DG solid = brepGeom.GetShape() as IBRepSolid_DG;
IBRepShell_DG shell = solid.GetOuterShell(false);
IBRepFace_DG face = shell.GetFace(indexOfTheFace);
IBSplineSurface_DG surf = face.GetSurface() as IBSplineSurface_DG

[Eugine Halep]

Thank you, Oleg