goat3d
view libs/vmath/ray_c.c @ 29:3d669155709d
- switched the unix build to use the internal vmath/anim as well
- fixed a memory corruption issue which was caused by including the system-wide
installed version of the anim.h header file
- started the ass2goat assimp->goat3d converter
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Sun, 29 Sep 2013 21:53:03 +0300 |
| parents | |
| children |
line source
1 /*
2 libvmath - a vector math library
3 Copyright (C) 2004-2011 John Tsiombikas <nuclear@member.fsf.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published
7 by the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
19 #include "ray.h"
20 #include "vector.h"
22 ray_t ray_transform(ray_t r, mat4_t xform)
23 {
24 mat4_t upper;
25 vec3_t dir;
27 m4_copy(upper, xform);
28 upper[0][3] = upper[1][3] = upper[2][3] = upper[3][0] = upper[3][1] = upper[3][2] = 0.0;
29 upper[3][3] = 1.0;
31 dir = v3_sub(r.dir, r.origin);
32 dir = v3_transform(dir, upper);
33 r.origin = v3_transform(r.origin, xform);
34 r.dir = v3_add(dir, r.origin);
35 return r;
36 }