1 /* 2 =========================================================================== 3 Copyright (C) 1997-2006 Id Software, Inc. 4 5 This file is part of Quake 2 Tools source code. 6 7 Quake 2 Tools source code is free software; you can redistribute it 8 and/or modify it under the terms of the GNU General Public License as 9 published by the Free Software Foundation; either version 2 of the License, 10 or (at your option) any later version. 11 12 Quake 2 Tools source code is distributed in the hope that it will be 13 useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with Quake 2 Tools source code; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 20 =========================================================================== 21 */ 22 23 #ifndef __MATHLIB__ 24 #define __MATHLIB__ 25 26 // mathlib.h 27 28 #include <math.h> 29 30 typedef float vec_t; 31 typedef vec_t vec3_t[3]; 32 33 #define SIDE_FRONT 0 34 #define SIDE_ON 2 35 #define SIDE_BACK 1 36 #define SIDE_CROSS -2 37 38 #define Q_PI 3.14159265358979323846 39 40 extern vec3_t vec3_origin; 41 42 #define EQUAL_EPSILON 0.001 43 44 qboolean VectorCompare (vec3_t v1, vec3_t v2); 45 46 #define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2]) 47 #define VectorSubtract(a,b,c) {c[0]=a[0]-b[0];c[1]=a[1]-b[1];c[2]=a[2]-b[2];} 48 #define VectorAdd(a,b,c) {c[0]=a[0]+b[0];c[1]=a[1]+b[1];c[2]=a[2]+b[2];} 49 #define VectorCopy(a,b) {b[0]=a[0];b[1]=a[1];b[2]=a[2];} 50 51 vec_t Q_rint (vec_t in); 52 vec_t _DotProduct (vec3_t v1, vec3_t v2); 53 void _VectorSubtract (vec3_t va, vec3_t vb, vec3_t out); 54 void _VectorAdd (vec3_t va, vec3_t vb, vec3_t out); 55 void _VectorCopy (vec3_t in, vec3_t out); 56 57 float VectorLength(vec3_t v); 58 59 void VectorMA (vec3_t va, float scale, vec3_t vb, vec3_t vc); 60 61 void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross); 62 vec_t VectorNormalize (vec3_t v); 63 void VectorInverse (vec3_t v); 64 void VectorScale (vec3_t v, vec_t scale, vec3_t out); 65 66 #endif 67