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annotate libs/vmath/ray.h @ 10:c71c477521ca

converting to GLES2 and C++
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 31 May 2015 00:40:26 +0300
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nuclear@10 1 /*
nuclear@10 2 libvmath - a vector math library
nuclear@10 3 Copyright (C) 2004-2015 John Tsiombikas <nuclear@member.fsf.org>
nuclear@10 4
nuclear@10 5 This program is free software: you can redistribute it and/or modify
nuclear@10 6 it under the terms of the GNU Lesser General Public License as published
nuclear@10 7 by the Free Software Foundation, either version 3 of the License, or
nuclear@10 8 (at your option) any later version.
nuclear@10 9
nuclear@10 10 This program is distributed in the hope that it will be useful,
nuclear@10 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@10 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
nuclear@10 13 GNU Lesser General Public License for more details.
nuclear@10 14
nuclear@10 15 You should have received a copy of the GNU Lesser General Public License
nuclear@10 16 along with this program. If not, see <http://www.gnu.org/licenses/>.
nuclear@10 17 */
nuclear@10 18
nuclear@10 19 #ifndef VMATH_RAY_H_
nuclear@10 20 #define VMATH_RAY_H_
nuclear@10 21
nuclear@10 22 #include "matrix.h"
nuclear@10 23 #include "vector.h"
nuclear@10 24
nuclear@10 25 typedef struct {
nuclear@10 26 vec3_t origin, dir;
nuclear@10 27 } ray_t;
nuclear@10 28
nuclear@10 29 #ifdef __cplusplus
nuclear@10 30 extern "C" {
nuclear@10 31 #endif /* __cplusplus */
nuclear@10 32
nuclear@10 33 static inline ray_t ray_cons(vec3_t origin, vec3_t dir);
nuclear@10 34 ray_t ray_transform(ray_t r, mat4_t m);
nuclear@10 35
nuclear@10 36 #ifdef __cplusplus
nuclear@10 37 } /* __cplusplus */
nuclear@10 38
nuclear@10 39 class Ray {
nuclear@10 40 public:
nuclear@10 41 /* enviornmental index of refraction, normally 1.0 */
nuclear@10 42 static scalar_t env_ior;
nuclear@10 43
nuclear@10 44 Vector3 origin, dir;
nuclear@10 45 scalar_t energy;
nuclear@10 46 int iter;
nuclear@10 47 scalar_t ior;
nuclear@10 48 long time;
nuclear@10 49
nuclear@10 50 Ray();
nuclear@10 51 Ray(const Vector3 &origin, const Vector3 &dir);
nuclear@10 52
nuclear@10 53 void transform(const Matrix4x4 &xform);
nuclear@10 54 Ray transformed(const Matrix4x4 &xform) const;
nuclear@10 55
nuclear@10 56 void enter(scalar_t new_ior);
nuclear@10 57 void leave();
nuclear@10 58
nuclear@10 59 scalar_t calc_ior(bool entering, scalar_t mat_ior = 1.0) const;
nuclear@10 60 };
nuclear@10 61
nuclear@10 62 inline Ray reflect_ray(const Ray &inray, const Vector3 &norm);
nuclear@10 63 inline Ray refract_ray(const Ray &inray, const Vector3 &norm, scalar_t ior, bool entering, scalar_t ray_mag = -1.0);
nuclear@10 64 #endif /* __cplusplus */
nuclear@10 65
nuclear@10 66 #include "ray.inl"
nuclear@10 67
nuclear@10 68 #endif /* VMATH_RAY_H_ */