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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Mon, 21 Jun 2004 16:12:11 GMT
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Viewed:
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3614 times
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In lugnet.cad, Don Heyse wrote:
> In lugnet.cad, Steve Bliss wrote:
> > The main practical effect on MIRROR.INI would be that normal parts
> > would have a mirroring transform (1 0 0 0 1 0 0 0 -1) instead of the
> > standard transform.
>
> Err, Shouldn't that be (-1 0 0 0 1 0 0 0 1)? You have to negate the
> X coordinate to mirror across the Z axis.
Sorry, I misunderstood the terminology. I figured you could either mirror
across a plane, or along a line. You can't mirror across a line - it's 1D. So
I assumed when people were writing about mirroring 'across the Z axis', they
meant to use the XY plane as the mirror.
So, yeah - for right/left mirroring, you'd negate the X coordinate.
Steve
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Message has 1 Reply:
 | | Re: Quick way to mirror-image a model?
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| (...) Heh, I was thinking 2-dimensionally. It's easier for my tired old brain. All my sketches were happening on the XZ plane so mirroring across the Z axis made total sense to me. Oh well. (...) Ok, now I have to follow through and actually make a (...) (20 years ago, 21-Jun-04, to lugnet.cad)
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