gu.h

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#ifndef _ULTRA64_GU_H_
#define _ULTRA64_GU_H_
 
#include <PR/mbi.h>
#include <PR/ultratypes.h>
#include <common_structs.h>
 
#define GU_PI 3.1415926
/* Functions */
 
void guPerspectiveF(float mf[4][4], u16* perspNorm, float fovy, float aspect, float near, float far, float scale);
void guPerspective(Mtx* m, u16* perspNorm, float fovy, float aspect, float near, float far, float scale);
void guFrustum(Mtx* m, float left, float right, float bottom, float top, float near, float far, float scale);
void guOrtho(Mtx* m, float left, float right, float bottom, float top, float near, float far, float scale);
void guTranslate(Mtx* m, float x, float y, float z);
void guRotate(Mtx* m, float a, float x, float y, float z);
void guScale(Mtx* m, float x, float y, float z);
void guMtxF2L(float mf[4][4], Mtx* m);
void guMtxIdent(Mtx* m);
void guMtxIdentF(float mf[4][4]);
void guMtxL2F(float mf[4][4], Mtx* m);
void guNormalize(float*, float*, float*);
 
void guLookAt(Mtx*, f32, f32, f32, f32, f32, f32, f32, f32, f32);
 
void guLookAtF(f32[4][4], f32, f32, f32, f32, f32, f32, f32, f32, f32);
 
/* Used only in Fast3DEX2 */
void guLookAtReflect(Mtx* m, LookAt* l, float xEye, float yEye, float zEye, float xAt, float yAt, float zAt, float xUp,
                     float yUp, float zUp);
#endif