Hi: I have a 3D polydata bone and i want to measure some distances between two points, i.e. one point in the top of the bone and other one in the bottom, how can I do it? Thanks a lot. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20080310/304e3af1/attachment.htm>