Xref: utzoo comp.sys.amiga.graphics:1451 comp.graphics:18110 Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!spool.mu.edu!munnari.oz.au!manuel!ccadfa!sserve!sserve.cc.adfa.oz.au!jrm From: jrm@delta.ma.adfa.oz.au (John R Marley) Newsgroups: comp.sys.amiga.graphics,comp.graphics Subject: Newell's teapot in DKBtrace? Message-ID: Date: 20 May 91 02:22:41 GMT Sender: gco@sserve.cc.adfa.oz.au (Geoff Collin) Distribution: comp Organization: none Lines: 18 I have DKBtrace version 2.11 running on our Apollo DN10000 and wish to trace a few teapots. I have the data describing the thing, but it uses Bezier patches. I can convert the Bezier patches to heaps of smooth shaded triangles, but calculating the vertex normals will be a bit of a #$%^&*. I guess what I'm asking is can it be done in this version without triangles? What sort of shapes can on get out of the QUARTIC primitive? The body and lid of the teapot are surfaces of rotation, and the handle and spout are two mirror-image patches, if that's any help. OK, so I work in a Maths Department - I'm a programmer not a Lecturer... Thanks in advance.. -- John Marley | Maths Dept, Uni College, | jrm@maadfa.adfa.oz.au | U.N.S.W., A.D.F.A., | =8^) ph : +61 6 2688882 | Canberra, Australia. |