public void StripedPattern()
{
Pattern pattern = new StripedPattern(white, black);
Assert.AreEqual(pattern.A, white);
Assert.AreEqual(pattern.B, black);
}
public void TestCreate()
{
var pattern = new StripedPattern(_white, _black);
Assert.AreEqual(_white, pattern.A);
Assert.AreEqual(_black, pattern.B);
}
public void Lighting_ShouldApplyColorsBasedOnTheMaterialPattern()
{
// arrange
var light = new PointLight(new(0f, 0f, -10f), Color.White);
var shape = new Sphere();
var eye = new Vector(0f, 0f, -1f);
var normal = new Vector(0f, 0f, -1f);
var sut = Material.Default with
{
AmbientReflection = 1f,
DiffuseReflection = 0f,
Pattern = new StripedPattern
{
Patterns = ImmutableArray.Create <Pattern>(
new SolidPattern(Color.White),
new SolidPattern(Color.Black)
)
},
SpecularReflection = 0f
};
// act
var color1 = sut.Lighting(light, shape, new Point(0.9f, 0f, 0f), eye, normal, true);
var color2 = sut.Lighting(light, shape, new Point(1.1f, 0f, 0f), eye, normal, true);
// assert
using var _ = new AssertionScope();
color1.Should().Be(Color.White);
color2.Should().Be(Color.Black);
}
public void AssigneTransformation()
{
StripedPattern pattern = new StripedPattern();
pattern.Transform = Matrix4.TranslateMatrix(1, 2, 3);
Assert.True(pattern.Transform == Matrix4.TranslateMatrix(1, 2, 3));
}
public void TestConstantZ()
{
var pattern = new StripedPattern(_white, _black);
Assert.AreEqual(_white, pattern.ColorAt(Tuple.Point(0, 0, 0)));
Assert.AreEqual(_white, pattern.ColorAt(Tuple.Point(0, 0, 1)));
Assert.AreEqual(_white, pattern.ColorAt(Tuple.Point(0, 0, 2)));
}
public void StripedPatternZConst()
{
Pattern pattern = new StripedPattern(white, black);
Assert.AreEqual(pattern.PatternAt(Tuple.Point(0, 0, 0)), white);
Assert.AreEqual(pattern.PatternAt(Tuple.Point(0, 0, 1)), white);
Assert.AreEqual(pattern.PatternAt(Tuple.Point(0, 0, 2)), white);
}
public void CreateStripePattern()
{
Pattern black = new SolidPattern(Color.Black);
Pattern white = new SolidPattern(Color.White);
StripedPattern pattern = new StripedPattern(white, black);
Assert.True(white == pattern.p1);
Assert.True(black == pattern.p2);
}
public void StripesWithPatternTransformation()
{
Sphere s = new Sphere();
Pattern pattern = new StripedPattern(white, black);
pattern.Transform = new Scale(2, 2, 2).GetTransform();
Color c = pattern.PatternAtShape(s, Tuple.Point(1.5, 0, 0));
Assert.AreEqual(c, white);
}
public void TestObjectTransform()
{
var o = new Sphere
{
Transform = Matrix4.Scaling(2, 2, 2)
};
var pattern = new StripedPattern(_white, _black);
Assert.AreEqual(_white, pattern.ColorAtObject(o.WorldToObject(Tuple.Point(1.5, 0, 0))));
}
public void StripePatternConstantZ()
{
Pattern black = new SolidPattern(Color.Black);
Pattern white = new SolidPattern(Color.White);
StripedPattern pattern = new StripedPattern(white, black);
Assert.True(Color.White == pattern.PatternAt(new Point(0, 0, 0)));
Assert.True(Color.White == pattern.PatternAt(new Point(0, 0, 1)));
Assert.True(Color.White == pattern.PatternAt(new Point(0, 0, 2)));
}
public void StripedPatternXChanges()
{
Pattern pattern = new StripedPattern(white, black);
Assert.AreEqual(pattern.PatternAt(Tuple.Point(0, 0, 0)), white);
Assert.AreEqual(pattern.PatternAt(Tuple.Point(0.9, 0, 0)), white);
Assert.AreEqual(pattern.PatternAt(Tuple.Point(1, 0, 0)), black);
Assert.AreEqual(pattern.PatternAt(Tuple.Point(-0.1, 0, 0)), black);
Assert.AreEqual(pattern.PatternAt(Tuple.Point(-1, 0, 0)), black);
Assert.AreEqual(pattern.PatternAt(Tuple.Point(-1.1, 0, 0)), white);
}
public void TestVariableX()
{
var pattern = new StripedPattern(_white, _black);
Assert.AreEqual(_white, pattern.ColorAt(Tuple.Point(0, 0, 0)));
Assert.AreEqual(_white, pattern.ColorAt(Tuple.Point(0.9, 0, 0)));
Assert.AreEqual(_black, pattern.ColorAt(Tuple.Point(1, 0, 0)));
Assert.AreEqual(_black, pattern.ColorAt(Tuple.Point(-0.1, 0, 0)));
Assert.AreEqual(_black, pattern.ColorAt(Tuple.Point(-1, 0, 0)));
Assert.AreEqual(_white, pattern.ColorAt(Tuple.Point(-1.1, 0, 0)));
}
public void StripePatternAlternatesX()
{
Pattern black = new SolidPattern(Color.Black);
Pattern white = new SolidPattern(Color.White);
StripedPattern pattern = new StripedPattern(white, black);
Assert.True(Color.White == pattern.PatternAt(new Point(0, 0, 0)));
Assert.True(Color.White == pattern.PatternAt(new Point(0.9f, 0, 0)));
Assert.True(Color.Black == pattern.PatternAt(new Point(1, 0, 0)));
Assert.True(Color.Black == pattern.PatternAt(new Point(-0.1f, 0, 0)));
Assert.True(Color.Black == pattern.PatternAt(new Point(-1, 0, 0)));
Assert.True(Color.White == pattern.PatternAt(new Point(-1.1f, 0, 0)));
}
public void StripesObjectTransform()
{
Pattern black = new SolidPattern(Color.Black);
Pattern white = new SolidPattern(Color.White);
Sphere s = new Sphere();
s.Transform = Matrix4.ScaleMatrix(2, 2, 2);
StripedPattern pattern = new StripedPattern(white, black);
Color result = pattern.PatternAtObject(s, new Point(1.5f, 0, 0));
Assert.True(Color.White == result);
}
public void LightingWithPattern()
{
Pattern black = new SolidPattern(Color.Black);
Pattern white = new SolidPattern(Color.White);
Sphere s = new Sphere();
StripedPattern pattern = new StripedPattern(white, black);
Material material = new Material(pattern: pattern, ambient: 1.0f, diffuse: 0.0f, specular: 0.0f);
Vector3 eyeV = new Vector3(0, 0, -1);
Vector3 normalV = new Vector3(0, 0, -1);
Light light = new Light(Color.White, new Point(0, 0, -10));
Color c1 = material.Lighting(material, s, light, new Point(0.9f, 0, 0), eyeV, normalV, false);
Color c2 = material.Lighting(material, s, light, new Point(1.9f, 0, 0), eyeV, normalV, false);
Assert.True(new Color(1, 1, 1) == c1);
Assert.True(new Color(0, 0, 0) == c2);
}
public void DefaultPatternTransform()
{
StripedPattern pattern = new StripedPattern();
Assert.True(pattern.Transform == new Matrix4());
}
// Patterns
public static void Chapter10()
{
Plane floor = new Plane();
floor.material = new Material();
floor.material.mColor = new Color(1, 0.9f, 0.9f);
floor.material.Pattern = new CheckerPattern(SolidPattern.White, SolidPattern.White * .25f);
floor.material.Specular = 0;
Plane backWall = new Plane();
backWall.Transform = Matrix4.TranslateMatrix(0, 0, 10) * Matrix4.RotateMatrix_X(Math.PI / 2);
StripedPattern s01 = new StripedPattern(SolidPattern.White, SolidPattern.Black);
StripedPattern s02 = new StripedPattern(SolidPattern.Red, SolidPattern.Green);
s02.Transform = Matrix4.RotateMatrix_Y((float)Math.PI / 4);
backWall.material.Pattern = new BlendPattern(s01, s02);
backWall.material.Specular = 0;
Plane wallRight = new Plane();
wallRight.Transform = Matrix4.TranslateMatrix(4, 0, 0) * Matrix4.RotateMatrix(0, 0, Math.PI / 2);
wallRight.material = new Material();
wallRight.material.mColor = Color.Blue;
floor.material.Specular = 0;
Plane wallLeft = new Plane();
wallLeft.Transform = Matrix4.TranslateMatrix(-4, 0, 0) * Matrix4.RotateMatrix(0, 0, Math.PI / 2);
wallLeft.material = new Material();
wallLeft.material.mColor = Color.Red;
wallLeft.material.Pattern = new CheckerPattern(new StripedPattern(SolidPattern.Yellow, SolidPattern.Green), new RingPattern(SolidPattern.White, SolidPattern.Black));
floor.material.Specular = 0;
Sphere middle = new Sphere();
middle.Transform = Matrix4.TranslateMatrix(-1.5f, 1, 2.0f);
middle.material = new Material();
middle.material.mColor = new Color(0.1f, 1, 0.5f);
middle.material.Pattern = new TestPattern();
middle.material.Pattern.Transform = Matrix4.ScaleMatrix(.25f, .25f, .25f);
middle.material.Diffuse = 0.7f;
middle.material.Specular = 0.3f;
Sphere middle02 = new Sphere();
middle02.Transform = Matrix4.TranslateMatrix(1.5f, 1, 2.0f);
middle02.material = new Material();
middle02.material.mColor = new Color(0.1f, 1, 0.5f);
middle02.material.Pattern = new RadialGradientPattern(SolidPattern.Purple, SolidPattern.Orange);
middle02.material.Pattern.Transform = Matrix4.RotateMatrix_Z((float)Math.PI / 2) * Matrix4.ScaleMatrix(0.25f, 0.25f, 0.25f);
middle02.material.Diffuse = 0.7f;
middle02.material.Specular = 0.3f;
Sphere middle03 = new Sphere();
middle03.Transform = Matrix4.TranslateMatrix(0, .5f, -1.5f) * Matrix4.ScaleMatrix(.5f, .5f, .5f);
middle03.material = new Material();
middle03.material.mColor = new Color(0.1f, 1, 0.5f);
middle03.material.Pattern = new CheckerPattern(SolidPattern.Yellow, SolidPattern.Green);
middle03.material.Pattern.Transform = Matrix4.ScaleMatrix(0.5f, 0.5f, 0.5f);
middle03.material.Diffuse = 0.7f;
middle03.material.Specular = 0.3f;
Sphere right = new Sphere();
right.Transform = Matrix4.TranslateMatrix(2.0f, 1.0f, -0.5f) * Matrix4.ScaleMatrix(0.85f, 0.25f, 0.85f);
right.material = new Material();
right.material.mColor = new Color(0.5f, 1, 0.1f);
right.material.Pattern = new StripedPattern(SolidPattern.White, SolidPattern.White * .25f);
right.material.Pattern.Transform = Matrix4.ScaleMatrix(.15f, 1, 1);
right.material.Diffuse = 0.4f;
right.material.Specular = 0.6f;
Sphere left = new Sphere();
left.Transform = Matrix4.TranslateMatrix(-2.5f, 0.33f, -0.75f) * Matrix4.ScaleMatrix(0.33f, 0.33f, 0.33f);
left.material = new Material();
left.material.mColor = new Color(1.0f, 0.8f, 0.1f);
left.material.Pattern = new GradientPattern(SolidPattern.Yellow, SolidPattern.Blue);
left.material.Diffuse = 0.7f;
left.material.Specular = 0.1f;
// Create Scene
Scene scene = new Scene();
Light l1 = new Light(Color.White * .8f, new Point(-3, 10, -10));
Light l2 = new Light(new Color(0.5f, 0.5f, 0.65f), new Point(3, 10, -5));
List <Light> lights = new List <Light>()
{
l1, l2
};
scene.Lights = lights;
List <RayObject> sceneObjects = new List <RayObject>()
{
floor, backWall, wallRight, wallLeft, middle, middle02, middle03, right, left
};
scene.Objects = sceneObjects;
// Create Camera
Camera cam = new Camera(1920 / 4, 1080 / 4, (float)Math.PI / 4);
cam.Transform = cam.ViewTransform(new Point(0, 2f, -8),
new Point(0, 1f, 0),
new Vector3(0, 1, 0));
Canvas image = cam.Render(scene); // Outputs image
// Save Canvas to ppm
Console.WriteLine("\nSaving PPM file");
string filePath = "C:\\Dev\\C#\\PracticePrograms\\RayTracerChallenge\\__renders";
string fileName = "Chapter10Challenge_07";
string fileDirectoryComplete = filePath + "\\" + fileName + ".ppm";
Save.PPM(fileDirectoryComplete, image);
Console.WriteLine("Done: Program complete.");
Console.ReadKey();
}
public static void GenerateImage()
{
var boxMaterial = Material.Default with
{
Pattern = new SolidPattern(new Color(1f, 0.9f, 0.9f)), SpecularReflection = 0f
};
var floor = new InfinitePlane {
Material = boxMaterial, Normal = Vector.UnitY
};
var leftWall = new InfinitePlane
{
Material = boxMaterial,
Normal = Vector.UnitX,
Transform = Matrix4.Translation(3f, 0f, 0f)
};
var rightWall = new InfinitePlane
{
Material = boxMaterial,
Normal = Vector.UnitZ,
Transform = Matrix4.Translation(0f, 0f, 3f)
};
var sphere = new Sphere
{
Material = Material.Default with
{
DiffuseReflection = 0.7f,
Pattern = new StripedPattern
{
Patterns = ImmutableArray.Create <Pattern>(
new StripedPattern
{
Patterns = ImmutableArray.Create <Pattern>(
new StripedPattern
{
Patterns = ImmutableArray.Create <Pattern>(
new SolidPattern(Color.Red),
new SolidPattern(Color.White)
),
Transform = Matrix4.Identity.RotateZ(MathF.PI / 4f)
.Scale(0.25f, 0.25f, 0.25f)
},
new StripedPattern
{
Patterns = ImmutableArray.Create <Pattern>(
new SolidPattern(Color.Green),
new SolidPattern(Color.White)
),
Transform = Matrix4.Identity.RotateZ(-MathF.PI / 4f)
.Scale(0.25f, 0.25f, 0.25f)
}
),
Transform = Matrix4.Identity.RotateZ(MathF.PI / 4f)
.Scale(0.25f, 0.25f, 0.25f)
},
new StripedPattern
{
Patterns = ImmutableArray.Create <Pattern>(
new StripedPattern
{
Patterns = ImmutableArray.Create <Pattern>(
new SolidPattern(Color.Blue),
new SolidPattern(Color.White)
),
Transform = Matrix4.Identity.RotateZ(MathF.PI / 4f)
.Scale(0.25f, 0.25f, 0.25f)
},
new StripedPattern
{
Patterns = ImmutableArray.Create <Pattern>(
new SolidPattern(new Color(1f, 0.99f, 0.23f)),
new SolidPattern(Color.White)
),
Transform = Matrix4.Identity.RotateZ(-MathF.PI / 4f)
.Scale(0.25f, 0.25f, 0.25f)
}
),
Transform = Matrix4.Identity.RotateZ(-MathF.PI / 4f)
.Scale(0.25f, 0.25f, 0.25f)
}
),
Transform = Matrix4.Identity.RotateZ(MathF.PI / 2f)
.Scale(0.25f, 0.25f, 0.25f)
},
SpecularReflection = 0.5f
},