gpuray_glsl

annotate vmath/ray.inl @ 0:f234630e38ff

initial commit
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 09 Nov 2014 13:03:36 +0200
parents
children
rev   line source
nuclear@0 1 /*
nuclear@0 2 libvmath - a vector math library
nuclear@0 3 Copyright (C) 2004-2011 John Tsiombikas <nuclear@member.fsf.org>
nuclear@0 4
nuclear@0 5 This program is free software: you can redistribute it and/or modify
nuclear@0 6 it under the terms of the GNU Lesser General Public License as published
nuclear@0 7 by the Free Software Foundation, either version 3 of the License, or
nuclear@0 8 (at your option) any later version.
nuclear@0 9
nuclear@0 10 This program is distributed in the hope that it will be useful,
nuclear@0 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@0 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
nuclear@0 13 GNU Lesser General Public License for more details.
nuclear@0 14
nuclear@0 15 You should have received a copy of the GNU Lesser General Public License
nuclear@0 16 along with this program. If not, see <http://www.gnu.org/licenses/>.
nuclear@0 17 */
nuclear@0 18
nuclear@0 19 #ifdef __cplusplus
nuclear@0 20 extern "C" {
nuclear@0 21 #endif /* __cplusplus */
nuclear@0 22
nuclear@0 23 static inline ray_t ray_cons(vec3_t origin, vec3_t dir)
nuclear@0 24 {
nuclear@0 25 ray_t r;
nuclear@0 26 r.origin = origin;
nuclear@0 27 r.dir = dir;
nuclear@0 28 return r;
nuclear@0 29 }
nuclear@0 30
nuclear@0 31 #ifdef __cplusplus
nuclear@0 32 }
nuclear@0 33
nuclear@0 34 inline Ray reflect_ray(const Ray &inray, const Vector3 &norm)
nuclear@0 35 {
nuclear@0 36 Ray ray = inray;
nuclear@0 37 ray.dir = ray.dir.reflection(norm);
nuclear@0 38 return ray;
nuclear@0 39 }
nuclear@0 40
nuclear@0 41 inline Ray refract_ray(const Ray &inray, const Vector3 &norm, scalar_t from_ior, scalar_t to_ior)
nuclear@0 42 {
nuclear@0 43 Ray ray = inray;
nuclear@0 44 ray.dir = ray.dir.refraction(norm, from_ior, to_ior);
nuclear@0 45
nuclear@0 46 /* check TIR */
nuclear@0 47 if(dot_product(ray.dir, norm) > 0.0) {
nuclear@0 48 return reflect_ray(inray, norm);
nuclear@0 49 }
nuclear@0 50 return ray;
nuclear@0 51 }
nuclear@0 52 #endif /* __cplusplus */