[Graphics] Add utility functions

[Michael Goffioul]

Hold on this patch. It reveals not very handy. I'll
propose another one soon.

Michael.


On Jan 30, 2008 11:18 AM, Michael Goffioul <michael.goffioul at gmail.com> wrote:
> src/ChangeLog
>
> 2008-01-30  Michael Goffioul <michael.goffioul at gmail.com>
>
>    * graphics.h.in (axes::properties::transform,
>    axes::properties::untransform): New utility methods.
>    (axes::properties::get_transform_matrix,
>    axes::properties::get_inverse_transform_matrix,
>    axes::properties::get_opengl_matrix_1,
>    axes::properties::get_opengl_matrix_2,
>    axes::properties::get_transform_zlim): New accessors.
>    * graphics.cc (axes::properties::transform,
>    axes::properties::untransform): New utility methods.
>