nuclear@0: /*
nuclear@0: libvmath - a vector math library
nuclear@0: Copyright (C) 2004-2011 John Tsiombikas <nuclear@member.fsf.org>
nuclear@0: 
nuclear@0: This program is free software: you can redistribute it and/or modify
nuclear@0: it under the terms of the GNU Lesser General Public License as published
nuclear@0: by the Free Software Foundation, either version 3 of the License, or
nuclear@0: (at your option) any later version.
nuclear@0: 
nuclear@0: This program is distributed in the hope that it will be useful,
nuclear@0: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@0: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@0: GNU Lesser General Public License for more details.
nuclear@0: 
nuclear@0: You should have received a copy of the GNU Lesser General Public License
nuclear@0: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@0: */
nuclear@0: 
nuclear@0: #ifndef VMATH_RAY_H_
nuclear@0: #define VMATH_RAY_H_
nuclear@0: 
nuclear@0: #include "matrix.h"
nuclear@0: #include "vector.h"
nuclear@0: 
nuclear@0: typedef struct {
nuclear@0: 	vec3_t origin, dir;
nuclear@0: } ray_t;
nuclear@0: 
nuclear@0: #ifdef __cplusplus
nuclear@0: extern "C" {
nuclear@0: #endif	/* __cplusplus */
nuclear@0: 
nuclear@0: static inline ray_t ray_cons(vec3_t origin, vec3_t dir);
nuclear@0: ray_t ray_transform(ray_t r, mat4_t m);
nuclear@0: 
nuclear@0: #ifdef __cplusplus
nuclear@0: }	/* __cplusplus */
nuclear@0: 
nuclear@0: #include <stack>
nuclear@0: 
nuclear@0: class Ray {
nuclear@0: public:
nuclear@0: 	static scalar_t env_ior;
nuclear@0: 
nuclear@0: 	Vector3 origin, dir;
nuclear@0: 	scalar_t energy;
nuclear@0: 	int iter;
nuclear@0: 	scalar_t ior;
nuclear@0: 	long time;
nuclear@0: 
nuclear@0: 	void *user;	/* store any random crap with the ray */
nuclear@0: 
nuclear@0: 	Ray();
nuclear@0: 	Ray(const Vector3 &origin, const Vector3 &dir);
nuclear@0: 
nuclear@0: 	void transform(const Matrix4x4 &xform);
nuclear@0: 	Ray transformed(const Matrix4x4 &xform) const;
nuclear@0: };
nuclear@0: 
nuclear@0: inline Ray reflect_ray(const Ray &inray, const Vector3 &norm);
nuclear@0: inline Ray refract_ray(const Ray &inray, const Vector3 &norm, scalar_t from_ior, scalar_t to_ior);
nuclear@0: #endif	/* __cplusplus */
nuclear@0: 
nuclear@0: #include "ray.inl"
nuclear@0: 
nuclear@0: #endif	/* VMATH_RAY_H_ */