1 /* 2 Copyright (C) 1997-2001 Id Software, Inc. 3 4 This program is free software; you can redistribute it and/or 5 modify it under the terms of the GNU General Public License 6 as published by the Free Software Foundation; either version 2 7 of the License, or (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 12 13 See the GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 19 */ 20 // r_math.h 21 typedef vec_t mat4x4_t[16]; 22 23 extern const mat4x4_t mat4x4_identity; 24 25 void Matrix4_Identity( mat4x4_t m ); 26 void Matrix4_Copy( const mat4x4_t m1, mat4x4_t m2 ); 27 qboolean Matrix4_Compare( const mat4x4_t m1, const mat4x4_t m2 ); 28 void Matrix4_Multiply( const mat4x4_t m1, const mat4x4_t m2, mat4x4_t out ); 29 void Matrix4_MultiplyFast( const mat4x4_t m1, const mat4x4_t m2, mat4x4_t out ); 30 void Matrix4_Rotate( mat4x4_t m, vec_t angle, vec_t x, vec_t y, vec_t z ); 31 void Matrix4_Translate( mat4x4_t m, vec_t x, vec_t y, vec_t z ); 32 void Matrix4_Scale( mat4x4_t m, vec_t x, vec_t y, vec_t z ); 33 void Matrix4_Transpose( const mat4x4_t m, mat4x4_t out ); 34 void Matrix4_Matrix( const mat4x4_t in, vec3_t out[3] ); 35 void Matrix4_Multiply_Vector( const mat4x4_t m, const vec4_t v, vec4_t out ); 36 37 void Matrix4_Copy2D( const mat4x4_t m1, mat4x4_t m2 ); 38 void Matrix4_Multiply2D( const mat4x4_t m1, const mat4x4_t m2, mat4x4_t out ); 39 void Matrix4_Scale2D( mat4x4_t m, vec_t x, vec_t y ); 40 void Matrix4_Translate2D( mat4x4_t m, vec_t x, vec_t y ); 41 void Matrix4_Stretch2D( mat4x4_t m, vec_t s, vec_t t ); 42 43 #define nanmask (255<<23) 44 #define IS_NAN(x) (((*(int *)&x)&nanmask)==nanmask) 45