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*Subject*: Re: Vertices and Polygons*From*: Craig Markwardt <craigmnet(at)cow.physics.wisc.edu>*Date*: 06 Jul 2000 10:28:19 -0500*Newsgroups*: comp.lang.idl-pvwave*Organization*: U. Wisc. Madison Physics -- Compact Objects*References*: <39635028.46140BC2@ljbdev.com>*Reply-To*: craigmnet(at)cow.physics.wisc.edu*Xref*: news.doit.wisc.edu comp.lang.idl-pvwave:20130

Larry Busse <ljb@ljbdev.com> writes: > I have an N-element list of vertices v(3,N) which describe a series of > points on a surface of a complex object. > > Is there an IDL function or method which would sort through this list > and generate the polygon array that is required by POLYSHADE for doing > surface rendering? > > It's been awhile since I've used IDL so maybe there's a newer object > oriented approach that you could recommend. I don't think that a simple list of vertices is enough information to reconstruct a complex polyhedron, especially if there are some concavities. [ If you want the complex hull, that's a different story, but as Chris J. reports, this may not even work right. Doh! ] Craig -- -------------------------------------------------------------------------- Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response --------------------------------------------------------------------------

**References**:**Vertices and Polygons***From:*Larry Busse

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