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100 lines
3.3 KiB
C
100 lines
3.3 KiB
C
#ifndef _GU_H_
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#define _GU_H_
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/**************************************************************************
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* *
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* Copyright (C) 1994, Silicon Graphics, Inc. *
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* *
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* These coded instructions, statements, and computer programs contain *
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* unpublished proprietary information of Silicon Graphics, Inc., and *
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* are protected by Federal copyright law. They may not be disclosed *
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* to third parties or copied or duplicated in any form, in whole or *
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* in part, without the prior written consent of Silicon Graphics, Inc. *
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* *
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**************************************************************************/
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/**************************************************************************
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*
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* $Revision: 1.48 $
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* $Date: 1999/07/13 08:00:20 $
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* $Source: /exdisk2/cvs/N64OS/Master/cvsmdev2/PR/include/gu.h,v $
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*
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**************************************************************************/
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#include <PR/mbi.h>
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#include <PR/ultratypes.h>
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#include <PR/sptask.h>
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#ifndef MAX
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#define MAX(a,b) (((a)>(b))?(a):(b))
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#endif
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#ifndef MIN
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#define MIN(a,b) (((a)<(b))?(a):(b))
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#endif
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#define M_PI 3.14159265358979323846
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#define GU_PI 3.1415926
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#define FTOFIX32(x) (long)((x) * (float)0x00010000)
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#ifdef AVOID_UB
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#define FIX32TOF(x) ((float)(x) * (1.0f / (float)0x00010000))
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#else
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#define FIX32TOF(x) (x / (float)0x00010000)
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#endif
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#define FTOFRAC8(x) ((int) MIN(((x) * (128.0f)), 127.0f) & 0xff)
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#define FILTER_WRAP 0
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#define FILTER_CLAMP 1
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/*
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* matrix operations:
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*
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* The 'F' version is floating point, in case the application wants
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* to do matrix manipulations and convert to fixed-point at the last
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* minute.
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*/
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extern void guMtxIdent(Mtx *m);
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extern void guMtxIdentF(float mf[4][4]);
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extern void guOrtho(Mtx *m, float l, float r, float b, float t,
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float n, float f, float scale);
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extern void guOrthoF(float mf[4][4], float l, float r, float b, float t,
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float n, float f, float scale);
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extern void guPerspective(Mtx *m, u16 *perspNorm, float fovy,
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float aspect, float near, float far, float scale);
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extern void guPerspectiveF(float mf[4][4], u16 *perspNorm, float fovy,
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float aspect, float near, float far, float scale);
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extern void guRotate(Mtx *m, float a, float x, float y, float z);
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extern void guRotateF(float mf[4][4], float a, float x, float y, float z);
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extern void guScale(Mtx *m, float x, float y, float z);
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extern void guScaleF(float mf[4][4], float x, float y, float z);
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extern void guTranslate(Mtx *m, float x, float y, float z);
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extern void guTranslateF(float mf[4][4], float x, float y, float z);
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extern void guMtxF2L(float mf[4][4], Mtx *m);
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extern void guMtxL2F(float mf[4][4], Mtx *m);
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/* vector utility: */
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extern void guNormalize(float *x, float *y, float *z);
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/* Used only in Fast3DEX2 */
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extern void guLookAtReflect(Mtx *m, LookAt *l,
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float xEye, float yEye, float zEye,
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float xAt, float yAt, float zAt,
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float xUp, float yUp, float zUp);
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extern void guLookAtReflectF(float mf[4][4], LookAt *l,
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float xEye, float yEye, float zEye,
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float xAt, float yAt, float zAt,
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float xUp, float yUp, float zUp);
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/*
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* Math functions
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*/
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extern float sinf(float);
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extern double sin(double);
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extern float cosf(float);
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extern double cos(double);
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extern float sqrtf(float);
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#endif /* !_GU_H_ */
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