It's the difference between multiplying the vector to the right or left. I
believe a 1by4 vector is multiplied to the right by the 4 by 4 matrix in
POV-Ray

Josh

Remco Poelstra wrote:

> Vahur Krouverk wrote:
>  >
>
> > Deciding from matrices.c POVRay multiplies vector row with matrix. But
> > why is it important?
>
> Because I'm writing a program that does some matrix calculations and
> outputs to povray.
> Now I was wondering how the matrices on
> http://enphilistor.users4.50megs.com/matrix.htm
> are constructed. I redesigned them by hand, and came out by the same
> matrices, except that I use the second method to multiply. ie, the
> vector as a column, not a row.
>
> Remco Poelstra

--
Josh English -- Lexiphanic Lethomaniac
eng### [at] spiritonecom
The POV-Ray Cyclopedia http://www.spiritone.com/~english/cyclopedia/
"He who hebetates is last."

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