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guPerspective
Format
#include "gu.h"
void guPerspective(Mtx m,
u16 *perspNorm,
float fovy, float aspect,
float near, float far, float scale)
Arguments
- m is the resulting 4x4 projection matrix
- perspNorm is the pointer to the value to use with the gSPPerspNormalize function
- fovy is field of view angle, in degrees, in the y direction
- aspect is the aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height) of the viewport region
- near, far specify the distance from the viewer to the near and far clipping plane (always positive)
- scale gives the scale of each element of the matrix. You can use it to improve precision in the RSP fixed-point arithmetic
What This Function Does
It computes and returns a 4x4 fixed-point perspective projection matrix (m) and a number to use with the gSPPerspNormalize function.
For a detailed description of the fixed-point matrix format, see gSPMatrix.
See Also
guPerspectiveF
guFrustum
guOrtho
gSPMatrix
gSPPerspNormalize
gluPerspective(3G)
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Nintendo® Confidential
Warning: all information in this document is confidential and covered by a non-disclosure agreement. You are responsible for keeping this information confidential and protected. Nintendo will vigorously enforce this responsibility.
Copyright © 1998
Nintendo of America Inc. All rights reserved Nintendo and N64 are registered trademarks of Nintendo
Last updated January 1998
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