Subject:
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Re: DAT voting page up
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Newsgroups:
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lugnet.cad.dev
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Date:
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Thu, 25 Feb 1999 16:41:23 GMT
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Viewed:
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1943 times
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LDraw and LDLite have the same problem, but to a lesser extent.
That's why it's so important to remove the blank-face on decorated
elements.
Steve
On Thu, 25 Feb 1999 09:28:14 GMT, "Lars C. Hassing" <lch@ccieurope.com>
wrote:
> Steve Bliss wrote:
> > > POV-Ray doesn't like coincident surfaces either.
> >
> > I wondered about that? Is it a problem if the surfaces are the same
> > color?
>
> No. I should have been more specific: If two surfaces coincide, the
> viewing ray will due to small numerical inaccuracies sometimes hit the
> one surface first and sometimes the other surface first. If the surfaces
> are colored differently "bleeding" occurs. This effect can be seen in
> http://www.netby.net/Nord/Mandelvej/Hassing/l3p_sw.html#readmore
>
> > The O in the Octan logo is round on the outside, but oval'ed
> > (ovoid?) on
> > the inside. To make the red filled area, I've used two overlapped
> > rings. The inner one is oval'ed, the outer is round, and they have a
> > non-uniform area of overlap.
>
> Clever idea!
> /Lars
>
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Message is in Reply To:
 | | RE: DAT voting page up
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| (...) No. I should have been more specific: If two surfaces coincide, the viewing ray will due to small numerical inaccuracies sometimes hit the one surface first and sometimes the other surface first. If the surfaces are colored differently (...) (28 years ago, 25-Feb-99, to lugnet.cad.dev)
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