public static SceneDescription ManySpheres()
{
var primitives = new List <Primitive>();
for (var i = 0; i < 200; ++i)
{
var spectrum = new Spectrum(Random.Shared.NextSingle(), Random.Shared.NextSingle(), Random.Shared.NextSingle());
Material material;
if (Random.Shared.NextSingle() > 0.7)
{
material = new MirrorMaterial(spectrum);
}
else
{
//material = new MatteMaterial(spectrum, 0);
material = new PlasticMaterial(spectrum, new Spectrum(1), Random.Shared.NextSingle());
}
var transform = Transform.Translate(Random.Shared.NextSingle() * 2 - 1, Random.Shared.NextSingle() * 2 - 1, Random.Shared.NextSingle() * 2 - 1);
var radius = 0.1f + Random.Shared.NextSingle() * 0.1f;
primitives.Add(new GeometricPrimitive(new Sphere(transform, radius), material));
}
var lights = new List <Light>();
for (var i = 0; i < 5; ++i)
{
var transform = Transform.Translate(Random.Shared.NextSingle() * 2 - 1, Random.Shared.NextSingle() * 2 - 1, Random.Shared.NextSingle() * -3 - 5);
var spectrum = new Spectrum(Random.Shared.NextSingle() * 25 + 15);
lights.Add(new PointLight(transform, spectrum));
}
return(new SceneDescription(new PrimitiveList(primitives), lights, OrthographicCamera.Create(new Point3 <float>(0, 0, -5))));
}
private static IScene Build()
{
var white =
new MatteMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 1f, 1f, 1f }, SpectrumType.Illuminant)),
new ConstantTexture <float>(0), null);
var red =
new PlasticMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 1f, 0f, 0f }, SpectrumType.Illuminant)),
new ConstantTexture <Spectrum>(new Spectrum(0.3f)),
new ConstantTexture <float>(0.0f),
null,
true);
var yellow =
new MatteMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 1f, 1f, 0f }, SpectrumType.Illuminant)),
new ConstantTexture <float>(0), null);
var cyan =
new MatteMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 0f, 1f, 1f }, SpectrumType.Illuminant)),
new ConstantTexture <float>(0), null);
var metal =
new MetalMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 0.8f, 0.8f, 0.8f }, SpectrumType.Illuminant)),
new ConstantTexture <Spectrum>(Spectrum.One),
new ConstantTexture <float>(0.01f), null, null, null, true);
var mirror =
new MirrorMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 0.8f, 0.8f, 0.8f }, SpectrumType.Illuminant)),
null);
var s1t = Transform.Translate(278, 278, 100);
var s1 = new Sphere(s1t, Transform.Invert(s1t), false, 100f, -100, 100, 360);
var s1g = new GeometricPrimitive(s1, mirror, null);
var s2t = Transform.Translate(340, 100, 80);
var s2 = new Sphere(s2t, Transform.Invert(s2t), false, 120f, -120, 120, 360);
var s2g = new GeometricPrimitive(s2, cyan, null);
var s3t = Transform.Translate(0, 278, 200);
var s3 = new Sphere(s3t, Transform.Invert(s3t), false, 300f, -300, 300, 360);
var s3g = new GeometricPrimitive(s3, yellow, null);
var s4t = Transform.Translate(400, 500, 150);
var s4 = new Sphere(s4t, Transform.Invert(s4t), false, 180f, -180, 180, 360);
var s4g = new GeometricPrimitive(s4, metal, null);
var s5t = Transform.Translate(420, 200, 250);
var s5 = new Sphere(s5t, Transform.Invert(s5t), false, 180f, -180, 180, 360);
var s5g = new GeometricPrimitive(s5, white, null);
var s6t = Transform.Translate(500, 30, 180);
var s6 = new Sphere(s6t, Transform.Invert(s6t), false, 200f, -200, 200, 360);
var s6g = new GeometricPrimitive(s6, red, null);
var bvh = new BVH(new IPrimitive[] { s1g, s2g, s3g, s4g, s5g, s6g }, SplitMethod.HLBVH);
var lt = Transform.Translate(400, 900, -800);
var s = Spectrum.FromBlackbodyT(5500) * 2000000f;
var pointLight = new PointLight(lt, null, s);
return(new Scene(bvh, new ILight[] { pointLight }));
}
private static IScene Build()
{
var white =
new MatteMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 1f, 1f, 1f }, SpectrumType.Illuminant)),
new ConstantTexture <float>(0), null);
var red =
new DisneyMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 0.9f, 0f, 0f }, SpectrumType.Reflectance)),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(1.5f),
new ConstantTexture <float>(0.6f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0.9f),
new ConstantTexture <float>(0f),
new ConstantTexture <Spectrum>(Spectrum.Zero),
false,
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0.5f),
null);
var yellow =
new DisneyMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 1f, 1f, 0f }, SpectrumType.Reflectance)),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(1.5f),
new ConstantTexture <float>(1f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0.9f),
new ConstantTexture <float>(0f),
new ConstantTexture <Spectrum>(Spectrum.Zero),
false,
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0.5f),
null);
var cyan =
new DisneyMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 0.01f, 0.5f, 0.01f }, SpectrumType.Reflectance)),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(1.8f),
new ConstantTexture <float>(1f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0.9f),
new ConstantTexture <float>(0f),
new ConstantTexture <Spectrum>(Spectrum.Zero),
false,
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0.5f),
null);
var metal = new DisneyMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 0.5f, 0.5f, 0.5f }, SpectrumType.Reflectance)),
new ConstantTexture <float>(1f),
new ConstantTexture <float>(1.8f),
new ConstantTexture <float>(0.5f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(1f),
new ConstantTexture <float>(0f),
new ConstantTexture <Spectrum>(Spectrum.Zero),
false,
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0.5f),
null);
var sss = new DisneyMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 0.9f, 0.9f, 0.9f }, SpectrumType.Reflectance)),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(1.5f),
new ConstantTexture <float>(0.5f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(1f),
new ConstantTexture <float>(0.5f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(1f),
new ConstantTexture <float>(0f),
new ConstantTexture <Spectrum>(new Spectrum(10f)),
false,
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0.5f),
null);
var mirror =
new MirrorMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 0.8f, 0.8f, 0.8f }, SpectrumType.Illuminant)),
null);
var trans = new DisneyMaterial(
new ConstantTexture <Spectrum>(Spectrum.FromRGB(new[] { 0.9f, 0.9f, 0.9f }, SpectrumType.Illuminant)),
new ConstantTexture <float>(1f),
new ConstantTexture <float>(1.62f),
new ConstantTexture <float>(0.5f),
new ConstantTexture <float>(1f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0.0f),
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0.0f),
new ConstantTexture <float>(0.5f),
new ConstantTexture <float>(0.90f),
new ConstantTexture <Spectrum>(new Spectrum(0f)),
false,
new ConstantTexture <float>(0f),
new ConstantTexture <float>(0f),
null);
var path = Path.Combine(TestScenes.GetExecutionPath(), "teapot.obj");
Console.WriteLine("Loading file {0}...", path);
var data = ObjFileMeshBuilder.ParseFile(path);
Console.WriteLine("File parsed...");
var teapotTransform = Transform.Scale(10)
.RotateX(MathF.Rad(-90))
.RotateY(MathF.Rad(26))
.Translate(272f, 175f, -123f);
var teapot = data.Meshes[0].BuildShape(teapotTransform, Transform.Invert(teapotTransform), false);
var primitives = teapot.Select(tri => new GeometricPrimitive(tri, metal, null)).Cast <IPrimitive>().ToList();
var plane = TestScenes.CreatePlane(new Point(-1500, 178, -800), new Point(1500, 178, 2500));
primitives.AddRange(plane.Select(tri => new GeometricPrimitive(tri, cyan, null)));
var bvh = new BVH(primitives.ToArray(), SplitMethod.HLBVH);
var transform = Transform.RotateX(MathF.Rad(70)).Translate(278, 600, -200);
var spectrum = Spectrum.FromBlackbodyT(4000) * 500000f;
var spotLight = new SpotLight(transform, null, spectrum, 120, 20);
transform = Transform.Translate(402, 300, 200);
spectrum = Spectrum.FromBlackbodyT(7500) * 20000f;
var pointLight = new PointLight(transform, null, spectrum);
return(new Scene(bvh, new ILight[] { pointLight, spotLight }));
}
