VTKUsers: The "cells.py" demo uses vtkHexahedron to make a cube. I want a stellated duodecahedron. If I use a Hexahedron.InsertPoint(6, 0.45, 0.101, -2.55) etc I get a weird little crumpled up thing. How do I declare the flats between these? Are they order-specific? TIA -- Phlip