153 lines
4 KiB
C
153 lines
4 KiB
C
|
/*
|
||
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU General Public License
|
||
|
|
as published by the Free Software Foundation; either version 2
|
||
|
|
of the License, or (at your option) any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||
|
|
|
||
|
|
See the GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||
|
|
|
||
|
|
*/
|
||
|
|
// mathlib.h
|
||
|
|
// Tomaz - Whole File Redone
|
||
|
|
typedef float vec3_t[3];
|
||
|
|
|
||
|
|
#ifndef M_PI
|
||
|
|
#define M_PI 3.141592653589793 // 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)
|
||
|
|
#define DEG2RAD( a ) ( a * degRadScalar )
|
||
|
|
|
||
|
|
|
||
|
|
#define lhrandom(MIN,MAX) ((rand() & 32767) * (((MAX)-(MIN)) * (1.0f / 32767.0f)) + (MIN))
|
||
|
|
#define teirand(MAX) ((rand() & 32767) * ((MAX) * (1.0f / 32767.0f)))
|
||
|
|
|
||
|
|
#define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2])
|
||
|
|
#define Length(v) (sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]))
|
||
|
|
#define VectorCompare(a,b) ((a[0] == b[0]) & (a[1] == b[1]) & (a[2] == b[2]))
|
||
|
|
#define VectorSet(v,a,b,c) (v[0]=a,v[1]=b,v[2]=c)
|
||
|
|
|
||
|
|
#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 VectorScale(a,b,c) \
|
||
|
|
( \
|
||
|
|
c[0] = a[0] * b, \
|
||
|
|
c[1] = a[1] * b, \
|
||
|
|
c[2] = a[2] * b \
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
#define VectorScale2(a,b,c) \
|
||
|
|
( \
|
||
|
|
c[0] = b[0] * a, \
|
||
|
|
c[1] = b[1] * a, \
|
||
|
|
c[2] = b[2] * a \
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
#define VectorCopy(in,out) \
|
||
|
|
( \
|
||
|
|
out[0] = in[0], \
|
||
|
|
out[1] = in[1], \
|
||
|
|
out[2] = in[2] \
|
||
|
|
)
|
||
|
|
|
||
|
|
#define VectorInverse(v) \
|
||
|
|
( \
|
||
|
|
v[0] = -v[0], \
|
||
|
|
v[1] = -v[1], \
|
||
|
|
v[2] = -v[2] \
|
||
|
|
)
|
||
|
|
|
||
|
|
#define CrossProduct(v1,v2,cross) \
|
||
|
|
( \
|
||
|
|
cross[0] = v1[1] * v2[2] - v1[2] * v2[1], \
|
||
|
|
cross[1] = v1[2] * v2[0] - v1[0] * v2[2], \
|
||
|
|
cross[2] = v1[0] * v2[1] - v1[1] * v2[0] \
|
||
|
|
)
|
||
|
|
|
||
|
|
#define VectorMA(a,s,b,c) \
|
||
|
|
( \
|
||
|
|
c[0] = a[0] + (s * b[0]), \
|
||
|
|
c[1] = a[1] + (s * b[1]), \
|
||
|
|
c[2] = a[2] + (s * b[2]) \
|
||
|
|
)
|
||
|
|
|
||
|
|
#define VectorClear(a) \
|
||
|
|
( \
|
||
|
|
a[0] = 0, \
|
||
|
|
a[1] = 0, \
|
||
|
|
a[2] = 0 \
|
||
|
|
)
|
||
|
|
|
||
|
|
#define VectorNegate(a,b) \
|
||
|
|
( \
|
||
|
|
b[0] = -(a[0]), \
|
||
|
|
b[1] = -(a[1]), \
|
||
|
|
b[2] = -(a[2]) \
|
||
|
|
)
|
||
|
|
|
||
|
|
float VectorNormalize(vec3_t v);
|
||
|
|
|
||
|
|
|
||
|
|
void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees );
|
||
|
|
|
||
|
|
void VectorVectors(const vec3_t forward, vec3_t right, vec3_t up);
|
||
|
|
void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up);
|
||
|
|
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))
|
||
|
|
|
||
|
|
extern float degRadScalar;
|
||
|
|
extern double angleModScalar1;
|
||
|
|
extern double angleModScalar2;
|
||
|
|
|
||
|
|
#define PlaneDiff(point,plane) (((plane)->type < 3 ? (point)[(plane)->type] : DotProduct((point), (plane)->normal)) - (plane)->dist)
|
||
|
|
|
||
|
|
void Math_Init();
|
||
|
|
|
||
|
|
//LordHavoc bound
|
||
|
|
#define bound(min,num,max) (num >= min ? (num < max ? num : max) : min)
|