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On 22 Dec 2000 08:48:55 -0500, Warp wrote:
>Ron Parker <ron### [at] povray org> wrote:
>: I think there's a can't-miss formula for the inverse of a 3x3 matrix, but
>: I don't remember it off the top of my head.
>
> But I think that povray matrices are 4x4 (and I think the original poster
>was talking about povray matrices if I'm not mistaken).
They're not really. The fourth column is just a convenient way of specifying
the translate component. You could easily take that out, invert, and put
it back.
--
Ron Parker http://www2.fwi.com/~parkerr/traces.html
My opinions. Mine. Not anyone else's.
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