MTX_OrthoW

C Specification

#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 );

Arguments

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 eyepoint to the near clip plane
f Distance from eyepoint to the far clip plane
scaleW Fine adjustment parameter for the view volume
mtx The pointer to a 4x4 matrix.

Return Values

None.

Description

This sets an orthogonal projection matrix to matrix *mtx. It uses the Divider. 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. The operation is not guaranteed if W-buffering is used, since the depth value is constant.

× scaleW

See Also

G3_OrthoW, MTX_Ortho, G3_Ortho

Revision History

06/21/2004 Initial version