Subject:
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Re: Mirrored parts and studs
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 2 Jul 2003 16:53:15 GMT
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Viewed:
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1666 times
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In lugnet.cad.dev, Don Heyse wrote:
> In lugnet.cad.dev, Jacob Sparre Andersen wrote:
> > Anyway. Since we are only talking about studs, the rendering programs
> > _could_ simply remember to fix any mirrored studs (can be done by
> > multiplying the rotation matrix of the object with the sign of its
> > determinant).
>
> Umm, my math is really rusty. Can the sign of the determinant also
> be used to detect mirroring? That could be handy.
Yes. That's what LDView does.
--Travis Cobbs
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Message has 1 Reply:
 | | Re: Mirrored parts and studs
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| (...) Yeah, I did a search for determinant and found your note. I tried the on-the-fly fix in ldglite with the L3 structs and it seems to work, although I'm not sure I'm applying the fix correctly. Is it really as simple as multiplying some matrix (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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