Subject:
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Re: Quick way to mirror-image a model?
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Newsgroups:
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lugnet.cad
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Date:
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Wed, 23 Jun 2004 15:29:13 GMT
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Viewed:
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3679 times
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In lugnet.cad, Steve Bliss wrote:
> In lugnet.cad, Carl Nelson wrote:
> > Unreflect is a better word--just undo the X coordinate swap that
> > -1 0 0 0 1 0 0 0 1 does.
>
> Would that work in general cases, or just for right-left reflection?
It would need to determine the plane of reflection, and do the second reflection
on the X components for left-right or Z components for front-back.
> > I believe they're equivalent things--I'm doing a clockwise rotation, then
> > negating the X coordinate swap, you're doing the opposite rotation. I think
> > both work for the part.
>
> Actually, I think they're not - "Steve's algorithm" (ha!) requires that both the
> MP and ME transforms be mirroring, so that the MF transform would be
> non-mirroring.
I've come up with the same results in all cases so far. I'll do some thinking
as to which is conceptually easier to generate--ideas?
Carl
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Message is in Reply To:
 | | Re: Quick way to mirror-image a model?
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| (...) Would that work in general cases, or just for right-left reflection? (...) Actually, I think they're not - "Steve's algorithm" (ha!) requires that both the MP and ME transforms be mirroring, so that the MF transform would be non-mirroring. (...) (20 years ago, 23-Jun-04, to lugnet.cad)
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