[vtk-developers] 3x3 rotation matrices

[David Doria]

On Sun, Jan 10, 2010 at 1:03 PM, Bill Lorensen <bill.lorensen at gmail.com> wrote:
> vtk uses homogenous coordinates. Why extract a 3x3?
>
> Bill

If you are implementing an algorithm that has a 3x3 multiplication and
you want to create a rotation matrix. Or for creating a 2d rotation in
homogeneous (now 3d) coordinates. If there is a Matrix3x3 class, you
should be able to create common matrices in that type, no?

Thanks,

David