#ifndef RAY_H #define RAY_H #include "vec3.h" class ray { public: ray() {} ray(const point3& origin, const vec3& direction) : orig(origin), dir(direction) {} point3 origin() const { return orig; } vec3 direction() const { return dir; } point3 at(float t) const { return orig + t*dir; } public: point3 orig; vec3 dir; }; #endif