CompuServe Messages

In answer to your question – they wander. Dramatically. They're from a 3d terrain model – picture a mesh covering a landscape. So its important to close them rather than just extrude them (good idea though) so that they can be subsequently filled in during shading (i.e., to simulate grass). Someone over on the acad forum just wrote me a lisp routine on the spot (yes I'm jumping!) to do this, so I'll be trying it out tonight. Will keep you posted. Doug.