32 lines
713 B
C++
32 lines
713 B
C++
#ifndef CAMERA_H
|
|
#define CAMERA_H
|
|
|
|
#include "vec3.h"
|
|
|
|
class Camera {
|
|
public:
|
|
Camera() {
|
|
auto aspect_ratio = 16.0 / 9.0;
|
|
auto viewport_height = 2.0;
|
|
auto viewport_width = aspect_ratio * viewport_height;
|
|
auto focal_length = 1.0;
|
|
|
|
origin = Point3(0, 0, 0);
|
|
horizontal = Vec3(viewport_width, 0.0, 0.0);
|
|
vertical = Vec3(0.0, viewport_height, 0.0);
|
|
lower_left_corner = origin - horizontal / 2 - vertical / 2 - Vec3(0, 0, focal_length);
|
|
}
|
|
|
|
Ray get_ray(double u, double v) const {
|
|
return Ray(origin, lower_left_corner + u * horizontal + v * vertical - origin);
|
|
}
|
|
|
|
private:
|
|
Point3 origin;
|
|
Point3 lower_left_corner;
|
|
Vec3 horizontal;
|
|
Vec3 vertical;
|
|
};
|
|
|
|
#endif // CAMERA_H
|