public void ShadeHitSchlick()
{
var w = World.Default;
var floor = new Plane(Translation(0, -1, 0))
{
Material = { Transparency = .5f, IOR = 1.5f, Reflectivity = .5f }
};
w.Objects.Add(floor);
var s = new Sphere(Translation(0, -3.5f, -.5f))
{
Material =
{
BaseColor = new Color(1, 0, 0),
Ambient = .5f
}
};
w.Objects.Add(s);
var r = new Ray(0, 0, -3, 0, -MathF.Sqrt(2f) / 2f, MathF.Sqrt(2f) / 2f);
var xs = new Intersection(MathF.Sqrt(2f), floor);
var comps = IntersectionState.Prepare(ref xs, ref r);
var color = w.ShadeHit(ref comps, 5);
Assert.That.VectorsAreEqual(color, new Color(.93391f, .69643f, .69243f), 1e-4f);
}
public void Chapter_XIV_b()
{
var floor = new PhongMaterial(Util.FromHex("#222831"))
{
Reflectivity = .9f, Specular = .5f, Shininess = 300
};
var p = new Plane(Translation(0, -.25f, 0))
{
Material = floor
};
public void Chapter_XI_b()
{
var floorMaterial = new PhongMaterial(Color.White)
{
IOR = Constants.GlassIOR,
Reflectivity = 1f
};
var skyMaterial = new PhongMaterial(Color.White)
{
Pattern = new RingPattern(Util.FromHex("#0092ca"), Util.FromHex("#00adb5"))
};
var sky = new Plane(Translation(0, 5, 0))
{
Material = skyMaterial
};
var floor = new Plane {
Material = floorMaterial
};
var w = new World
{
Objects = new List <Entity> {
floor, sky
}
};
for (var i = 0; i < 20; i++)
{
var rnd = new Random();
var x = (float)rnd.NextDouble();
var y = (float)rnd.NextDouble();
var z = (float)rnd.NextDouble();
var col = new Color(x, y, z);
var mat = new PhongMaterial(col)
{
IOR = Constants.GlassIOR, Transparency = y, Reflectivity = x, Specular = z
};
var s = new Sphere(Translation((x * 10f) - 5f, y, z * 10f) * Scale(y))
{
Material = mat
};
w.Objects.Add(s);
}
var l = PointLight.Default;
l.Intensity *= 2f;
w.Lights.Add(l);
var cam = new Camera(20, 10, MathF.PI / 1.5f)
{
Transform = Camera.ViewTransform(Point(0f, 1f, -2f), Point(0f, 1f, 0f), Direction(0f, 1f, 0f))
};
cam.Render(w);
}
public void LimitRecursion()
{
var w = World.Default;
var s = new Plane(Translation(0, -1, 0))
{
Material = { Reflectivity = .5f }
};
w.Objects.Add(s);
var r = new Ray(0, 0, -3, 0, -MathF.Sqrt(2f) / 2f, MathF.Sqrt(2f) / 2f);
var i = new Intersection(MathF.Sqrt(2f), s);
var comps = IntersectionState.Prepare(ref i, ref r);
var col = w.ReflectedColor(ref comps, 0);
Assert.That.VectorsAreEqual(col, Color.Black);
}
public void ShadeHitWithReflective()
{
var w = World.Default;
var s = new Plane(Translation(0f, -1f, 0f))
{
Material = { Reflectivity = .5f }
};
w.Objects.Add(s);
var r = new Ray(0, 0, -3, 0, -MathF.Sqrt(2f) / 2f, MathF.Sqrt(2f) / 2f);
var i = new Intersection(MathF.Sqrt(2f), s);
var comps = IntersectionState.Prepare(ref i, ref r);
var col = w.ShadeHit(ref comps, 5);
Assert.That.VectorsAreEqual(col, new Color(.87677f, .92436f, .82918f), 1e-3f);
}
public void ReflectedColorReflectiveMaterial()
{
var w = World.Default;
var s = new Plane(Translation(0, -1, 0))
{
Material = { Reflectivity = .5f }
};
w.Objects.Add(s);
var r = new Ray(0, 0, -3, 0, -MathF.Sqrt(2f) / 2f, MathF.Sqrt(2f) / 2f);
var i = new Intersection(MathF.Sqrt(2f), s);
var comps = IntersectionState.Prepare(ref i, ref r);
var col = w.ReflectedColor(ref comps, 1);
Assert.That.VectorsAreEqual(col, new Color(.19032f, .2379f, .14274f), 1e-3f);
}
public void Chapter_X()
{
var floorMaterial = PhongMaterial.Default;
floorMaterial.Pattern = new CheckerPattern(Util.FromHex("#bd2c00"), Util.FromHex("#222222"), RotationY(MathF.PI / 4f));
floorMaterial.Specular = 0f;
var back = PhongMaterial.Default;
back.Pattern = new RingPattern(Util.FromHex("#0c3866"), Util.FromHex("#007cc0"));
back.Specular = 0.5f;
var sphereMaterial = PhongMaterial.Default;
sphereMaterial.Pattern = new StripePattern(Util.FromHex("#ffc20e"), Util.FromHex("#ffd54f"))
{
Transform = Scale(.1f) * RotationY(MathF.PI / 2f)
};
sphereMaterial.Diffuse = 1f;
var floor = new Plane {
Material = floorMaterial
};
var s = new Sphere(Translation(0f, 0f, 2f))
{
Material = sphereMaterial
};
var backDrop = new Plane(Translation(0f, 0f, 10f) * RotationX(MathF.PI / 2f))
{
Material = back
};
var w = new World
{
Objects = new List <Entity> {
floor, s, backDrop
},
};
w.Lights.Add(PointLight.Default);
var cam = new Camera(10, 10, MathF.PI / 3f)
{
Transform = Camera.ViewTransform(Point(0f, 1f, -2f), Point(0f, 1f, 0f), Direction(0f, 1f, 0f))
};
cam.Render(w);
}
public void AvoidInfiniteLoop()
{
var w = new World
{
Lights = new List <ILight> {
new PointLight(Point(0, 0, 0), Color.White)
}
};
var lower = new Plane(Translation(0, -1, 0))
{
Material = { Reflectivity = 1 }
};
var upper = new Plane(Translation(0, 1, 0))
{
Material = { Reflectivity = 1 }
};
w.Objects.AddRange(new[] { lower, upper });
var r = new Ray(0, 0, 0, 0, 1, 0);
Assert.AreNotEqual(w.ColorAt(ref r, 100), Color.Black);
}
public void Chapter_IX()
{
var wallMaterial = new PhongMaterial(new Color(.9f, .9f, .9f))
{
Specular = 0f
};
var floorMaterial = new PhongMaterial(new Color(.7f, .7f, .8f))
{
Specular = 0f
};
var left = new Plane(Translation(0f, 0f, 10f) * RotationY(MathF.PI / -4f) * RotationX(MathF.PI / 2f))
{
Material = wallMaterial
};
var right = new Plane(Translation(0f, 0f, 10f) * RotationY(MathF.PI / 4f) * RotationX(MathF.PI / 2f))
{
Material = wallMaterial
};
var floor = new Plane(Translation(0f, -7f, 0f))
{
Material = floorMaterial
};
var mescho = Util.LoadMesitaldehydeAtoms();
var w = new World
{
Objects = new List <Entity> {
floor, left, right
},
};
w.Lights.Add(new PointLight(Point(-7f, 15f, -7f), new Color(1f, 1f, 1.05f)));
w.Objects.AddRange(mescho);
var cam = new Camera(10, 10, MathF.PI / 3f)
{
Transform = Camera.ViewTransform(Point(1f, .5f, -12f), Point(0f, .5f, 0f), Direction(0f, 1f, 0f))
};
cam.Render(w);
}
public void Chapter_XI_a()
{
var floorMaterial = PhongMaterial.Default;
floorMaterial.Pattern = new CheckerPattern(Util.FromHex("#393e46"), Util.FromHex("#222831"), RotationY(MathF.PI / 4f));
floorMaterial.Specular = 0f;
floorMaterial.Reflectivity = 1f;
var sphereMaterial = PhongMaterial.Default;
sphereMaterial.Pattern = new StripePattern(Util.FromHex("#7bc74d"), Util.FromHex("#eeeeee"))
{
Transform = Scale(.1f) * RotationY(MathF.PI / 2f)
};
sphereMaterial.Diffuse = 1f;
var floor = new Plane {
Material = floorMaterial
};
var s = new Sphere(Translation(0f, 1f, 2f) * RotationY(MathF.PI / 4f))
{
Material = sphereMaterial
};
var w = new World
{
Objects = new List <Entity> {
floor, s
},
};
w.Lights.Add(PointLight.Default);
var cam = new Camera(20, 10, MathF.PI / 2f)
{
Transform = Camera.ViewTransform(Point(0f, 1f, -2f), Point(0f, 1f, 0f), Direction(0f, 1f, 0f))
};
cam.Render(w);
}
public void ChapterXIII_a()
{
var w = new World();
var p = new Plane()
{
Material = new PhongMaterial(Util.FromHex("#393e46"))
{
Reflectivity = .1f
}
};
w.Objects.Add(p);
var boostMat = new PhongMaterial(Util.FromHex("#222831"))
{
Specular = 0
};
var c1 = new Cone(Translation(0.363811f, 0.47248f, 0) * RotationZ(MathF.PI) * Scale(.202f, .367f, .202f))
{
Minimum = 0, Maximum = 1, IsClosed = true, Material = boostMat
};
var c2 = new Cone(Translation(0f, 0.47248f, -0.386016f) * RotationZ(MathF.PI) * Scale(.202f, .367f, .202f))
{
Minimum = 0, Maximum = 1, IsClosed = true, Material = boostMat
};
var c3 = new Cone(Translation(-0.363811f, 0.47248f, 0) * RotationZ(MathF.PI) * Scale(.202f, .367f, .202f))
{
Minimum = 0, Maximum = 1, IsClosed = true, Material = boostMat
};
var c4 = new Cone(Translation(0f, 0.47248f, 0.386016f) * RotationZ(MathF.PI) * Scale(.202f, .367f, .202f))
{
Minimum = 0, Maximum = 1, IsClosed = true, Material = boostMat
};
w.Objects.Add(c1);
w.Objects.Add(c2);
w.Objects.Add(c3);
w.Objects.Add(c4);
var baseMat = new PhongMaterial(Color.White)
{
Pattern = new StripePattern(Color.White, Color.Black, Scale(.05f) * RotationZ(MathF.PI / 2f)),
Reflectivity = .7f
};
var cyl = new Cylinder(Translation(0, 4.23516f, 0) * Scale(.596f, 3.782f, .596f))
{
Minimum = -1f, Maximum = 0f, IsClosed = true, Material = baseMat
};
var con = new Cone(Translation(0f, 4.8f, 0f) * RotationZ(MathF.PI) * Scale(.596f))
{
Minimum = 0, Maximum = 1, IsClosed = true, Material = baseMat
};
w.Objects.Add(cyl);
w.Objects.Add(con);
var cyl1 = new Cylinder(Translation(0, 5.15554f, 0) * Scale(.411f, 1.104f, .411f))
{
Minimum = -1f, Maximum = 0f, IsClosed = true, Material = baseMat
};
var con1 = new Cone(Translation(0f, 5.55f, 0f) * RotationZ(MathF.PI) * Scale(.411f))
{
Minimum = 0, Maximum = 1, IsClosed = true, Material = baseMat
};
w.Objects.Add(cyl1);
w.Objects.Add(con1);
var cyl2 = new Cylinder(Translation(0, 5.7f, 0) * Scale(.211f, .345f, .211f))
{
Minimum = -1f, Maximum = 0f, IsClosed = true, Material = baseMat
};
var con2 = new Cone(Translation(0f, 5.9f, 0f) * RotationZ(MathF.PI) * Scale(.211f))
{
Minimum = 0, Maximum = 1, IsClosed = true, Material = baseMat
};
w.Objects.Add(cyl2);
w.Objects.Add(con2);
var cyl3 = new Cylinder(Translation(0, 6f, 0) * Scale(.092f, .151f, .092f))
{
Minimum = -1f, Maximum = 0f, IsClosed = true, Material = baseMat
};
var con3 = new Cone(Translation(0f, 6.1f, 0f) * RotationZ(MathF.PI) * Scale(.092f))
{
Minimum = 0, Maximum = 1, IsClosed = true, Material = baseMat
};
w.Objects.Add(cyl3);
w.Objects.Add(con3);
var topMat = new PhongMaterial(Color.White);
var cyl4 = new Cylinder(Translation(0, 7f, 0) * Scale(.04f, 3f, .04f))
{
Minimum = -1f, Maximum = 0f, IsClosed = true, Material = topMat
};
w.Objects.Add(cyl4);
var cube = new Cube(Translation(-5, 1, -2))
{
Material = new PhongMaterial(Color.White)
{
Transparency = 1f, IOR = Constants.GlassIOR, Reflectivity = 0f
}
};
var s = new Sphere(Translation(-5, .5f, -2) * Scale(.5f))
{
Material = new PhongMaterial(Color.Red)
{
Reflectivity = 1
}
};
var s2 = new Sphere(Translation(5, 1.5f, 2) * Scale(1.5f))
{
Material = new PhongMaterial(Color.Red)
{
Reflectivity = 1
}
};
var cube2 = new Cube(Translation(7, .7f, -2) * Scale(.7f))
{
Material = new PhongMaterial(Color.White)
{
Transparency = 1f, IOR = Constants.GlassIOR, Reflectivity = 0f
}
};
var s3 = new Sphere(Translation(5, 1, -2))
{
Material = new PhongMaterial(Color.Blue)
{
Reflectivity = 1
}
};
var s4 = new Sphere(Translation(-8, 1, 3))
{
Material = new PhongMaterial(Color.Green)
{
Reflectivity = 1
}
};
w.Objects.Add(cube);
w.Objects.Add(cube2);
w.Objects.Add(s);
w.Objects.Add(s2);
w.Objects.Add(s3);
w.Objects.Add(s4);
var l = new PointLight(Point(1.4122f, 10.242f, -10f), Color.White);
w.Lights.Add(l);
var cam = new Camera(10, 10, 50 * MathF.PI / 180)
{
Transform = Camera.ViewTransform(Point(15.548f, 5f, 0f), Point(0, 1, 0), Vector4.UnitY)
};
cam.Render(w);
}