#include <nitro/fx/fx_mtx44.h>
void MTX_Ortho( fx32 t, fx32 b, fx32 l, fx32 r, fx32 n, fx32 f, MtxFx44* mtx );
This function sets an orthogonal projection matrix to *mtx. It uses the Divider. The diagram shows the matrix that is set.
(Caution) If you set an orthogonal projection, you must use G3*_SwapBuffers to select Z buffering. W buffering will not function properly because the depth value will always be fixed.

t |
Y coordinate at the top of the near clipping plane |
b |
Y coordinate at the bottom of the near clipping plane |
l |
X coordinate at the left of the near clipping plane |
r |
X coordinate at the right of the near clipping plane |
n |
Distance from the eyepoint to the near clipping plane |
f |
Distance from the eyepoint to the far clipping plane |
mtx |
Pointer to a 4x4 matrix |
None
G3_Ortho, MTX_Frustum, MTX_Perspective
04/27/2004 Initial Version