public static void Main(string[] args)
{
HitList world = new HitList();
world.Add(new Sphere(new Vec3(-4, 1, 0), 1, new Lambertian(new Vec3(0.4, 0.2, 0.1))));
world.Add(new Sphere(new Vec3(4, 1, 0), 1, new Metallic(new Vec3(0.7, 0.6, 0.5), 0.0)));
world.Add(new Sphere(new Vec3(0, 1, 0), 1, new Dielectric(1.5)));
//world.Add(new Sphere(Vec3.front, -0.45, new Dielectric(1.5)));
Vec3 random = Vec3.zero;
Vec3 expoint = new Vec3(4.0, 0.2, 0.0);
for (int i = -11; i < 11; i++)
{
for (int j = -11; j < 11; j++)
{
double choose_mat = rng.NextDouble();
random.Set(i + 0.9 * rng.NextDouble(), 0.2, j + 0.9 * rng.NextDouble());
if (Vec3.Distance(random, expoint) > 0.9)
{
if (choose_mat < 0.7)
{
world.Add(new Sphere(random, 0.2, new Lambertian(new Vec3(rng.NextDouble() * rng.NextDouble(), rng.NextDouble() * rng.NextDouble(), rng.NextDouble() * rng.NextDouble()))));
}
else if (choose_mat < 0.90)
{
world.Add(new Sphere(random, 0.2, new Metallic(new Vec3(0.5 * (1 + rng.NextDouble()), 0.5 * (1 + rng.NextDouble()), 0.5 * (1 + rng.NextDouble())), 0.5 * rng.NextDouble())));
}
else
{
world.Add(new Sphere(random, 0.2, new Dielectric(1.5)));
}
}
}
}
world.Add(new Sphere(new Vec3(0.0, -1000, -1.0), 1000.0, new Lambertian(Vec3.one * 0.9)));
Vec3 color;
Vec3 camPosition = new Vec3(9, 1.95, 2.3);
double distToFocus = Vec3.Distance(camPosition, Vec3.front);
Camera cam = new Camera(camPosition, Vec3.front, Vec3.up, 30, width / (double)height, 0.01);
world.Compute();
for (int y = height - 1; y >= 0; y--)
{
for (int x = 0; x < width; x++)
{
color = Vec3.zero;
for (int i = 0; i < numSamples; i++)
{
double u = (x + rng.NextDouble()) / width;
double v = (y + rng.NextDouble()) / height;
color += Color(cam.GetRay(u, v), world);
}
color /= numSamples;
int ir = (int)(255.99 * Math.Sqrt(color.R));
int ig = (int)(255.99 * Math.Sqrt(color.G));
int ib = (int)(255.99 * Math.Sqrt(color.B));
frame[x, y].Set(ir, ig, ib);
}
Console.WriteLine("{0} of {1}", height - y, height);
}
StreamWriter writer = new StreamWriter(filename);
writer.WriteLine("P3");
writer.WriteLine("{0} {1} 255", width, height);
for (int y = height - 1; y >= 0; y--)
{
for (int x = 0; x < width; x++)
{
writer.WriteLine(frame[x, y]);
}
}
writer.Close();
Console.WriteLine("Written to " + filename);
Process.Start("open", filename);
}
public Sphere(Vec3 center, double radius, IMaterial material)
{
this.center = center;
this.radius = radius;
this.material = material;
}
