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 02:38:46 GMT
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Viewed:
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4055 times
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In lugnet.cad, Don Heyse wrote:
> > To unmirror, the C element should be -1.
>
> Err, I'm not sure what you mean by unmirror. I got
> (0 0 1 0 1 0 1 0 0 0 0 0) for a mirror.ini exception matrix, which
> looks yours except for the sign of that one number.
Unreflect is a better word--just undo the X coordinate swap that -1 0 0 0 1 0 0 0 1 does.
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.
> > Works like a charm so far, and I haven't found any parts that
> > aren't solvable by a single exception matrix yet.
>
> Me neither.
Yeah, and we don't need no models with no funky new parts that don't mirror
right anyway! ;-)
> And generating the MIRROR.INI file. I did some corner parts, some
> triangular wings, some minifig arms and legs, and some technic liftarms.
> I also created a tiny C program to parse MIRROR.INI and use it to mirror
> a file across the ZY plane. It seems to work so far. The source, ini,
> and a windows command line executable is here:
>
> http://ldglite.sf.net/mirwin.zip
>
> If anyone wants to update MIRROR.INI for all 2500 parts, that'd be
> fantastic.
Can't promise that--I am adding an exception matrix editor to my program that
should make the task easier though!
Carl
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Message has 2 Replies:
 | | Re: Quick way to mirror-image a model?
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| (...) We already got some of them. The 4360 Space laser gun with side sight is gonna to be a problem. You just *know* someone out there'll hook it up to something by the stud on the asymetric sight portion. And there'll be no end to the whining when (...) (20 years ago, 23-Jun-04, to lugnet.cad)
| | | 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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Message is in Reply To:
| | Re: Quick way to mirror-image a model?
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| (...) Err, I'm not sure what you mean by unmirror. I got (0 0 1 0 1 0 1 0 0 0 0 0) for a mirror.ini exception matrix, which looks yours except for the sign of that one number. (...) Me neither. (...) And generating the MIRROR.INI file. I did some (...) (20 years ago, 22-Jun-04, to lugnet.cad)
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