public TestScene(double aspect)
{
double R = Math.Cos(Math.PI / 4);
IHitable[] hitables =
{
new Sphere(Vec3.Create(-R, 0, -1), R, new Lambertian(Vec3.Create(1, 0, 0))),
new Sphere(Vec3.Create(R, 0, -1), R, new Lambertian(Vec3.Create(0, 0, 1)))
};
World = new HitableList(hitables);
Camera = Camera.CreateByVerticalFiled(90, aspect);
}
public MaterialsScene(double aspect)
{
IHitable[] hitables =
{
new Sphere(Vec3.Create(0, -100.5, 0), 100, new Lambertian(Vec3.Create(0.8, 0.8, 0.0))),
new Sphere(Vec3.Create(0, 0, 0), 0.5, new Lambertian(Vec3.Create(0.1, 0.2, 0.5))),
new Sphere(Vec3.Create(1, 0, 0), 0.5, new Metal(Vec3.Create(0.8, 0.6, 0.2),0.3)),
new Sphere(Vec3.Create(-1, 0, 0), 0.5, new Dielectric(1.5)),
new Sphere(Vec3.Create(-1, 0, 0), -0.45, new Dielectric(1.5))
};
World = new HitableList(hitables);
Camera = Camera.CreateLookAt(Vec3.Create(0.25, 0.5, 2.2), Vec3.Create(0.1, 0.0, 0), Vec3.Create(0, 1, 0), 45, aspect, 0, 1);
}
public DefocusBlurScene(double aspect)
{
IHitable[] hitables =
{
new Sphere(Vec3.Create(0, -100.5, -1), 100, new Lambertian(Vec3.Create(0.8, 0.8, 0.0))),
new Sphere(Vec3.Create(0, 0, -1), 0.5, new Lambertian(Vec3.Create(0.1, 0.2, 0.5))),
new Sphere(Vec3.Create(1, 0, -1), 0.5, new Metal(Vec3.Create(0.8, 0.6, 0.2),0.3)),
new Sphere(Vec3.Create(-1, 0, -1), 0.5, new Dielectric(1.5)),
new Sphere(Vec3.Create(-1, 0, -1), -0.45, new Dielectric(1.5))
};
World = new HitableList(hitables);
var lookFrom = Vec3.Create(3, 3, 2);
var lookAt = Vec3.Create(0, 0, -1);
var dist_to_focus = (lookFrom - lookAt).Length;
double aderpture = 2;
Camera = Camera.CreateLookAt(lookFrom, lookAt, Vec3.Create(0, 1, 0), 25, aspect, aderpture, dist_to_focus);
}
public CoverScene(double aspect)
{
var sampler = new Random();
List <IHitable> hitables = new List <IHitable>();
hitables.Add(new Sphere(Vec3.Create(0, -1000, 0), 1000, new Lambertian(Vec3.Create(0.5, 0.5, 0.5))));
for (int a = -11; a < 11; ++a)
{
for (int b = -11; b < 11; ++b)
{
double choos_mat = sampler.NextDouble();
Vec3 center = Vec3.Create(a + 0.9 * sampler.NextDouble(), 0.2, b + 0.9 * sampler.NextDouble());
if ((center - Vec3.Create(4, 0.2, 0)).Length > 0.9)
{
if (choos_mat < 0.8) // diffuse
{
hitables.Add(new Sphere(center, 0.2,
new Lambertian(Vec3.Create(sampler.NextDouble() * sampler.NextDouble(), sampler.NextDouble() * sampler.NextDouble(), sampler.NextDouble() * sampler.NextDouble()))));
}
else if (choos_mat < 0.9) // metal
{
hitables.Add(new Sphere(center, 0.2,
new Metal(Vec3.Create(0.5 * (1 + sampler.NextDouble()), 0.5 * (1 + sampler.NextDouble()), 0.5 * (1 + sampler.NextDouble())), 0.5 * sampler.NextDouble())));
}
else // glass
{
hitables.Add(new Sphere(center, 0.2, new Dielectric(1.5)));
}
}
}
}
hitables.Add(new Sphere(Vec3.Create(0, 1, 0), 1, new Dielectric(1.5)));
hitables.Add(new Sphere(Vec3.Create(-4, 1, 0), 1, new Lambertian(Vec3.Create(0.4, 0.2, 0.1))));
hitables.Add(new Sphere(Vec3.Create(4, 1, 0), 1, new Metal(Vec3.Create(0.7, 0.6, 0.5), 0)));
World = new HitableList(hitables.ToArray());
var lookFrom = Vec3.Create(12, 2, 3);
var lookAt = Vec3.Create(0, 0, 0);
double dist_to_focus = 10;
double aderpture = 0.1;
Camera = Mathematics.Camera.CreateLookAt(lookFrom, lookAt, Vec3.Create(0, 1, 0), 20, aspect, aderpture, dist_to_focus);
}
