"Gilles Tran" <tra### [at] inapginrafr> schreef in bericht
news:3B374033.F7C580F0@inapg.inra.fr...
> Warp wrote:
>
> > Paul Brants <pbr### [at] pandorabe> wrote:
> > : What am I doing wrong??
> >
> >   Calculating the inverse of a matrix is a bit more complicated. You
should
> > find info in the net about that.
>
> Here for instance (see Gauss-Jordan elimination).
> http://www.ulib.org/webRoot/Books/Numerical_Recipes/bookcpdf.html
> This site is really helpful, BTW.
>
> G.
>
> --
>
> **********************
> http://www.oyonale.com
> **********************
> Graphic experiments
> Pov-ray gallery
>
Thanks for the reference, but since Mat is a rotation matrix, it should be
orthogonal, which  means that : its transpose = its inverse
or as you can check out :
 transpose of the matrix * the matrix itself = identity matrix

Paul

Post a reply to this message