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Re: Vertices and Polygons [message #20556]

Thu, 06 July 2000 00:00

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

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

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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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		Re: Vertices and Polygons By: Craig Markwardt on Thu, 06 July 2000 00:00
		Re: Vertices and Polygons By: Chris J. on Thu, 06 July 2000 00:00

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