int main() {
const int height = 2000;
const int width = 2000;
ofstream image;
image.open("out.ppm");
image << "P3" << '\n' << width << ' ' << height << '\n' << 255 << '\n';
Point camera(0,0,0);
Light lights [3] = { Light(Point(1200,0,800), Colour(255,0,0)),
Light(Point(1200,800,0), Colour(0,255,0)),
Light(Point(1200,-800,0), Colour(0,0,255)) };
Colour background;
Sphere sphere(Point(2000,0,0),700);
Point plane_point;
Point surface_point;
//std::cout << illuminate(Point(0,0,0),Vector(2,2,2),Light(Point(4,4,4),Colour(2,2,2))).convertToString() << std::endl;
//std::cout << Line(Point(0,0,0),Vector(1,0,0)).intersect(Sphere(Point(10,0,0),2)) << std::endl;
Line ray;
Vector direction;
Colour point_colour;
for (int z = 1000; z > -1000; z-=1) {
for (int y = -1000; y < 1000; y+=1) {
plane_point = Point(1000,y,z);
direction = plane_point - camera;
ray = Line(camera, direction);
if (ray.intersect(sphere)) {
surface_point = ray.point_intersect(sphere);
point_colour = illuminate(surface_point, surface_point - sphere.center(), lights);
point_colour = boundColour(point_colour, 0, 255);
image << point_colour.convertToString() << ' ';
//image << "255 255 255 ";
} else {
image << background.convertToString() << ' ';
}
}
image << '\n';
}
image.close();
return 0;
}
