mirror of
https://github.com/FWGS/xash3d-fwgs
synced 2024-12-18 06:51:16 +01:00
96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
/***
|
|
*
|
|
* Copyright (c) 1996-2002, 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
|
|
|
|
#include <math.h>
|
|
|
|
typedef float vec_t;
|
|
typedef vec_t vec2_t[2];
|
|
typedef vec_t vec3_t[3];
|
|
typedef vec_t vec4_t[4]; // x,y,z,w
|
|
|
|
#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)
|
|
|
|
#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);
|
|
|
|
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]);
|
|
|
|
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 NormalizeAngles( vec3_t angles );
|
|
void InterpolateAngles( vec3_t start, vec3_t end, vec3_t output, float frac );
|
|
float AngleBetweenVectors( const vec3_t v1, const vec3_t v2 );
|
|
|
|
void VectorMatrix( vec3_t forward, vec3_t right, vec3_t up);
|
|
void VectorAngles( const vec3_t forward, vec3_t angles );
|
|
|
|
int InvertMatrix( const float * m, float *out );
|
|
|
|
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)))
|