Subject:
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Re: Conditional lines on sloped wedge parts 43720 and 43721
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Newsgroups:
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lugnet.cad.dat.parts
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Date:
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Tue, 19 Apr 2005 15:07:10 GMT
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Viewed:
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4796 times
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In lugnet.cad.dat.parts, Don Heyse wrote:
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Oh, I don’t know about that 1 pixel business. The problem with the
surface as it’s currently written, is that it flip-flops between
convex and concave every at every triangle. But if you ignore the
triangles and spin the surface around a bit, it really looks like
an inner torus surface oriented diagonally. We know how to do that
without making a lumpy mess of it. The challenge is in getting
a diamond shaped slice of torus instead of a rectangular slice.
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I think the key difference is the twisted nature of this surface. I think the
twist makes it impossible to partition the surface into polygons without having
a mix of convex and concave seams. I’d like to be proven wrong.
I don’t have one of the pieces handy, I’ll have to look at some tonight, at
home.
Steve
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