#ifndef CAMERAH
#define CAMERAH

#include "ray.h"

class camera {
    public:
        camera() {
            lower_left_corner = vec3(-2.0, -1.0, -1.0);
            horizontal = vec3(4.0, 0.0, 0.0); 
            vertical = vec3(0.0, 2.0, 0.0); 
            /*
            lower_left_corner = vec3(-.1, -0.05, -1.0);
            horizontal = vec3(0.2, 0.0, 0.0); 
            vertical = vec3(0.0, 0.1, 0.0); 
            */
            origin = vec3(0.0, 0.0, 0.0);
        }

        camera(vec3 lookfrom,  vec3 lookat, vec3 view_up,  float aspect,  float vfov,  float aperture, float distance_to_focus) {
            origin = lookfrom;
            w = unit_vector(lookfrom - lookat;
            u = unit_vector(cross(vup, w));
            v = cross(w, u);
            ZZ
        }
        ray get_ray(float s, float t) { return ray(origin, lower_left_corner + s*horizontal + t*vertical - origin); }

        vec3 origin;
        vec3 lower_left_corner;
        vec3 horizontal;
        vec3 vertical;
        vec3 u, v, w;
        float radius;
};

#endif