| 0,0 → 1,89 |
|---|
| /* |
| 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 |
| |
| typedef float vec_t; |
| typedef vec_t vec3_t[3]; |
| typedef vec_t vec5_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) |
| |
| #define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2]) |
| #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];} |
| |
| void VectorMA (vec3_t veca, float scale, 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 (vec3_t v1, vec3_t v2); |
| vec_t Length (vec3_t v); |
| void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross); |
| float VectorNormalize (vec3_t v); // returns vector length |
| void VectorInverse (vec3_t v); |
| void VectorScale (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]); |
| |
| void FloorDivMod (double numer, double denom, int *quotient, |
| int *rem); |
| fixed16_t Invert24To16(fixed16_t val); |
| int GreatestCommonDivisor (int i1, int i2); |
| |
| 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))) |