Subject:
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Re: Lines in patterns
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Newsgroups:
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lugnet.cad
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Date:
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Fri, 3 Jan 2003 14:10:18 GMT
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Viewed:
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416 times
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In lugnet.cad, Lars C. Hassing writes:
> The lines are there to have something drawn when the polygon would
> otherwise be too small to be rendered (at low magnification).
>
> Personally I don't like them in the present form,
> because they rely on renderers to draw objects in a certain sequence.
> In June 2002 I suggested a META statement to point out these lines,
> see http://news.lugnet.com/cad/dev/?n=7378
>
> A META statement could signal their special purpose.
> Renderers could treat them correctly, i.e. draw them lastly.
You don't actually have to draw them last. Just offset them in
the Z buffer a bit toward the camera. It's cheap, and fast, and
I think it looks pretty good. Opengl does it for you with
glPolygonOffset but you can examine some homemade code that does
the same thing in the original ldlite sources.
Don
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Message is in Reply To:
 | | Re: Lines in patterns
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| (...) The lines are there to have something drawn when the polygon would otherwise be too small to be rendered (at low magnification). Personally I don't like them in the present form, because they rely on renderers to draw objects in a certain (...) (22 years ago, 3-Jan-03, to lugnet.cad)
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