mirror of
https://github.com/unknownworlds/NS.git
synced 2024-11-15 09:11:55 +00:00
67304e06d3
git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@276 67975925-1194-0748-b3d5-c16f83f1a3a1
154 lines
No EOL
4.2 KiB
C
154 lines
No EOL
4.2 KiB
C
/***
|
|
*
|
|
* Copyright (c) 1999, 2000, Valve LLC. All rights reserved.
|
|
*
|
|
* This product contains software technology licensed from Id
|
|
* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* Use, distribution, and modification of this source code and/or resulting
|
|
* object code is restricted to non-commercial enhancements to products from
|
|
* Valve LLC. All other use, distribution, or modification is prohibited
|
|
* without written permission from Valve LLC.
|
|
*
|
|
****/
|
|
// mathlib.h
|
|
#ifndef MATHLIB_H
|
|
#define MATHLIB_H
|
|
|
|
typedef float vec_t;
|
|
typedef vec_t vec3_t[3];
|
|
typedef vec_t vec4_t[4]; // x,y,z,w
|
|
typedef vec_t vec5_t[5];
|
|
|
|
typedef short vec_s_t;
|
|
typedef vec_s_t vec3s_t[3];
|
|
typedef vec_s_t vec4s_t[4]; // x,y,z,w
|
|
typedef vec_s_t vec5s_t[5];
|
|
|
|
typedef int fixed4_t;
|
|
typedef int fixed8_t;
|
|
typedef int fixed16_t;
|
|
|
|
#ifndef M_PI
|
|
#define M_PI 3.14159265358979323846 // matches value in gcc v2 math.h
|
|
#endif
|
|
|
|
struct mplane_s;
|
|
|
|
extern vec3_t vec3_origin;
|
|
extern int nanmask;
|
|
|
|
#define IS_NAN(x) (((*(int *)&x)&nanmask)==nanmask)
|
|
|
|
#include "common/vec_op.h"
|
|
//#ifndef VECTOR_H
|
|
// #define DotProduct(x,y) ((x)[0]*(y)[0]+(x)[1]*(y)[1]+(x)[2]*(y)[2])
|
|
//#endif
|
|
//
|
|
//#define VectorSubtract(a,b,c) {(c)[0]=(a)[0]-(b)[0];(c)[1]=(a)[1]-(b)[1];(c)[2]=(a)[2]-(b)[2];}
|
|
//#define VectorAdd(a,b,c) {(c)[0]=(a)[0]+(b)[0];(c)[1]=(a)[1]+(b)[1];(c)[2]=(a)[2]+(b)[2];}
|
|
//#define VectorCopy(a,b) {(b)[0]=(a)[0];(b)[1]=(a)[1];(b)[2]=(a)[2];}
|
|
//#define VectorClear(a) {(a)[0]=0.0;(a)[1]=0.0;(a)[2]=0.0;}
|
|
|
|
//void VectorMA (const vec3_t veca, float scale, const vec3_t vecb, vec3_t vecc);
|
|
|
|
vec_t _DotProduct (vec3_t v1, vec3_t v2);
|
|
void _VectorSubtract (vec3_t veca, vec3_t vecb, vec3_t out);
|
|
void _VectorAdd (vec3_t veca, vec3_t vecb, vec3_t out);
|
|
void _VectorCopy (vec3_t in, vec3_t out);
|
|
|
|
int VectorCompare (const vec3_t v1, const vec3_t v2);
|
|
//float Length (const vec3_t v);
|
|
void CrossProduct (const vec3_t v1, const vec3_t v2, vec3_t cross);
|
|
//float VectorNormalize (vec3_t v); // returns vector length
|
|
void VectorInverse (vec3_t v);
|
|
//void VectorScale (const vec3_t in, vec_t scale, vec3_t out);
|
|
int Q_log2(int val);
|
|
|
|
void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3]);
|
|
void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4]);
|
|
|
|
// Here are some "manual" INLINE routines for doing floating point to integer conversions
|
|
extern short new_cw, old_cw;
|
|
|
|
typedef union DLONG {
|
|
int i[2];
|
|
double d;
|
|
float f;
|
|
} DLONG;
|
|
|
|
extern DLONG dlong;
|
|
|
|
#ifdef _WIN32
|
|
void __inline set_fpu_cw(void)
|
|
{
|
|
_asm
|
|
{ wait
|
|
fnstcw old_cw
|
|
wait
|
|
mov ax, word ptr old_cw
|
|
or ah, 0xc
|
|
mov word ptr new_cw,ax
|
|
fldcw new_cw
|
|
}
|
|
}
|
|
|
|
int __inline quick_ftol(float f)
|
|
{
|
|
_asm {
|
|
// Assumes that we are already in chop mode, and only need a 32-bit int
|
|
fld DWORD PTR f
|
|
fistp DWORD PTR dlong
|
|
}
|
|
return dlong.i[0];
|
|
}
|
|
|
|
void __inline restore_fpu_cw(void)
|
|
{
|
|
_asm fldcw old_cw
|
|
}
|
|
#else
|
|
#define set_fpu_cw() /* */
|
|
#define quick_ftol(f) ftol(f)
|
|
#define restore_fpu_cw() /* */
|
|
#endif
|
|
|
|
void FloorDivMod (double numer, double denom, int *quotient,
|
|
int *rem);
|
|
fixed16_t Invert24To16(fixed16_t val);
|
|
int GreatestCommonDivisor (int i1, int i2);
|
|
|
|
void AngleVectors (const vec3_t angles, vec3_t forward, vec3_t right, vec3_t up);
|
|
void AngleVectorsTranspose (const vec3_t angles, vec3_t forward, vec3_t right, vec3_t up);
|
|
#define AngleIVectors AngleVectorsTranspose
|
|
|
|
void AngleMatrix (const vec3_t angles, float (*matrix)[4] );
|
|
void AngleIMatrix (const vec3_t angles, float (*matrix)[4] );
|
|
void VectorTransform (const vec3_t in1, float in2[3][4], vec3_t out);
|
|
|
|
void VectorMatrix( vec3_t forward, vec3_t right, vec3_t up);
|
|
//void VectorAngles( const vec3_t forward, vec3_t angles );
|
|
|
|
int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct mplane_s *plane);
|
|
float anglemod(float a);
|
|
|
|
|
|
|
|
#define BOX_ON_PLANE_SIDE(emins, emaxs, p) \
|
|
(((p)->type < 3)? \
|
|
( \
|
|
((p)->dist <= (emins)[(p)->type])? \
|
|
1 \
|
|
: \
|
|
( \
|
|
((p)->dist >= (emaxs)[(p)->type])?\
|
|
2 \
|
|
: \
|
|
3 \
|
|
) \
|
|
) \
|
|
: \
|
|
BoxOnPlaneSide( (emins), (emaxs), (p)))
|
|
|
|
#endif |