ray.h

#ifndef RAY_H
#define RAY_H

#include "vec3.h"

class ray {
public:
    ray() {}

    ray(const point3& origin, const vec3& direction) : orig(origin), dir(direction) {}

    const point3& origin() const {return orig;}
    const vec3& direction() const {return dir;}

    point3 at (double t) const {
        return orig + t*dir;
    }

private:
    point3 orig;
    vec3 dir;
};

#endif