Hello all vtk users. I'm new with you, so please try to help me if possible . I wanna to draw the crest lines of a polydata. Is there any way t do this? Thanks for all -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20081105/b2f11ee1/attachment.htm>