

#include <nitro/fx/fx_mtx44.h>
void MTX_OrthoW( fx32 t, fx32 b, fx32 l, fx32 r, fx32 n, fx32 f, fx32 scaleW, MtxFx44 * mtx );
| 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 viewpoint to the near clipping plane |
| f | Distance from viewpoint to the far clipping plane |
| scaleW | Precision adjustment parameter for the view volume |
| mtx | Pointer to a 4x4 matrix. |
None.
This sets an orthogonal projection matrix to matrix *mtx.
The diagram shows the matrix that is set.
Note: When setting the matrix for an orthogonal projection, it will be necessary to select Z-buffering with the G3*_SwapBuffers functions. The operation is not guaranteed if W-buffering is used, since the depth value is constant.
× scaleW
The divider is used internally. Refer to Divider Usage Notes when using this function inside an interrupt.
G3_OrthoW, MTX_Ortho,G3_Ortho,
2004/06/21 Initial version.
CONFIDENTIAL