public static float Randf()
{
return(StaticRandom.Randf());
}
private static IHitable CreateRandomScene()
{
var hitables = new List <IHitable>(500);
hitables.Add(new Sphere(new Vector3(0f, -1000f, 0f), 1000f, new Lambertian(new Vector3(0.5f, 0.5f, 0.5f))));
for (int a = -11; a < 11; a++)
{
for (int b = -11; b < 11; b++)
{
float randomMat = (float)StaticRandom.NextDouble();
var center = new Vector3(a + 0.9f * (float)StaticRandom.NextDouble(), 0.2f, b + 0.9f * (float)StaticRandom.NextDouble());
if ((center - new Vector3(4f, 0.2f, 0f)).Length() > 0.9f)
{
if (randomMat < 0.8f) //diffuse
{
hitables.Add(new Sphere(center, 0.2f, new Lambertian(new Vector3((float)StaticRandom.NextDouble() * (float)StaticRandom.NextDouble(), (float)StaticRandom.NextDouble() * (float)StaticRandom.NextDouble(), (float)StaticRandom.NextDouble() * (float)StaticRandom.NextDouble()))));
}
else if (randomMat < 0.95f) //metal
{
hitables.Add(new Sphere(center, 0.2f, new Metal(new Vector3(0.5f * (1f + (float)StaticRandom.NextDouble()), 0.5f * (1 + (float)StaticRandom.NextDouble()), 0.5f * (float)StaticRandom.NextDouble()), 0.2f)));
}
else //glass
{
hitables.Add(new Sphere(center, 0.2f, new Dielectric(1.5f)));
}
}
}
}
hitables.Add(new Sphere(new Vector3(0f, 1f, 0f), 1.0f, new Dielectric(1.5f)));
hitables.Add(new Sphere(new Vector3(-4f, 1f, 0f), 1.0f, new Lambertian(new Vector3(0.4f, 0.2f, 0.1f))));
hitables.Add(new Sphere(new Vector3(4f, 1f, 0f), 1.0f, new Metal(new Vector3(0.7f, 0.6f, 0.5f), 0f)));
return(new HitableCollection(hitables));
}
