Well it doesn't really matter because they're supposed to be 4x4 anyway and
those are multiplyable. Yes, I know, non-commutative blah blah blah I learned
that stuff last year. That's fairly obvious, though, because everybody whose
ever made a POV scene knows that rotate-translate is different from
translate-rotate.

Lance Birch wrote:

> >But Mr.POV, I can't multiply 4x3 matrices together!!!
>
> Some matrices are non-conformable, so you can't multiply a 4x3 matrix by a
> 4x3 matrice but you can multiply a 4x3 by a 3x4.
>
> For example:
>
> a = [1, 2, 3]
> b = [3, 5, 7]
>
> You can multiply a by b because they're non-conformable matrices.
> And also matrices are not commutative or associative under multiplication.
>
> Or was that what you meant anyway?
>
> --
> Lance.
>
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