Subject:
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Re: Inverse matrix?
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Newsgroups:
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lugnet.cad.ray, lugnet.cad
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Date:
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Sun, 8 Apr 2007 00:09:57 GMT
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Viewed:
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7357 times
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On Apr 8, 2007, at 12:04 AM, James Reynolds wrote:
> On Apr 7, 2007, at 11:59 PM, James Reynolds wrote:
>
> > > > Just take the transpose of the 3x3 world rotation matrix and it
> > > > should work as
> > > > the inverse. Transpose means swap diagonals M[1,2] <=> M[2,1] etc.
> > >
> > > I mean swap the OFF-diagonals, leave the diagonals as is.
> > >
> > > > If this doesn't work I've misunderstood you.
> >
> > (I might still look it up as I may need to know about it)
>
> Did you mean this:
>
> [ 1 2 3 4
> 5 6 7 8
> 9 10 11 12
> 13 14 15 16 ]
>
> [ 1 5 9 13
> 2 6 10 14
> 3 7 11 15
> 4 8 12 16 ]
>
> I have yet to try it.
Well I'll be! That works too! Thanks you guys!
James
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