public static void Main(string[] args)
{
// output to a ppm file
Console.Write("P3\n" + nx + " " + ny + " " + "\n255\n");
// create the world
List <Hitable> world = new List <Hitable>();
world.Add(new Moving_Sphere(new Vector3(0.0f, 0.0f, 0.0f),
new Vector3(0.0f, 0.0f, -2.0f),
0.0f,
10.0f,
0.5f,
new Lambertian(new Const_Texture(new Vector3(0.137f, 0.467f, 1.0f)))));
world.Add(new Sphere(new Vector3(1.0f, 0.0f, -1.0f),
0.5f,
new Dielectric(1.5f)));
world.Add(new Sphere(new Vector3(1.0f, 0.0f, -1.0f),
-0.3f,
new Dielectric(1.5f)));
world.Add(new Sphere(new Vector3(-1.0f, 0.0f, -1.0f),
0.5f,
new Metal(new Noise(10.0f))));
world.Add(new Sphere(new Vector3(0.0f, -100.5f, -1.0f),
100.0f,
new Lambertian(new Marble(new Vector3(0.0f, 0.8f, 0.0f), 5.0f))));
BVH_Node tree = new BVH_Node(world, 0.0f, 10.0f);
// init the camera
Vector3 lookfrom = new Vector3(3.0f, 2.0f, 2.0f);
Vector3 lookat = new Vector3(0.0f, 0.0f, -1.0f);
float dist_to_focus = (lookfrom - lookat).length();
float apeture = 0.5f;
Camera cam = new Camera(lookfrom,
lookat,
new Vector3(0.0f, 1.0f, 0.0f),
40.0f,
(float)nx / (float)ny,
apeture,
dist_to_focus,
0.0f,
10.0f);
for (int i = ny - 1; i >= 0; i--)
{
for (int j = 0; j < nx; j++)
{
// supersampling for antialiasing
Vector3 col = new Vector3();
for (int s = 0; s < ns; s++)
{
float u = (float)(j + Utils.rnd.NextDouble()) / (float)nx;
float v = (float)(i + Utils.rnd.NextDouble()) / (float)ny;
Ray r = cam.getRay(u, v);
col += color(r, tree, 0);
}
col /= (float)ns;
// gamma correction
col = new Vector3((float)Math.Sqrt(col.x()),
(float)Math.Sqrt(col.y()),
(float)Math.Sqrt(col.z()));
// values written to file
int ir = (int)(255.99f * col.r());
int ig = (int)(255.99f * col.g());
int ib = (int)(255.99f * col.b());
Console.Write(ir + " " + ig + " " + ib + "\n");
}
}
}