Replaces the current projection matrix with an orthographic projection matrix.
| this |
A Framebuffer pointer |
| x_1 |
The x coordinate for the first vertical clipping plane |
| y_1 |
The y coordinate for the first horizontal clipping plane |
| x_2 |
The x coordinate for the second vertical clipping plane |
| y_2 |
The y coordinate for the second horizontal clipping plane |
| near |
The <emphasis>distance</emphasis> to the near clipping plane (will be <emphasis>negative</emphasis> if the plane is behind the viewer) |
| far |
The <emphasis>distance</emphasis> to the far clipping plane (will be <emphasis>negative</emphasis> if the plane is behind the viewer) |