public void TestCheckerZ()
{
var pattern = new CheckerPattern(_white, _black);
Assert.AreEqual(_white, pattern.ColorAt(Tuple.Point(0, 0, 0)));
Assert.AreEqual(_white, pattern.ColorAt(Tuple.Point(0, 0, 0.99)));
Assert.AreEqual(_black, pattern.ColorAt(Tuple.Point(0, 0, 1.01)));
}
public void ShouldRepeatInEachDirectionForCheckersPattern(float x, float y, float z, bool expectingWhite)
{
var pattern = new CheckerPattern(VColor.White, VColor.Black);
AssertActualEqualToExpected(
pattern.GetColorAt(CreatePoint(x, y, z)),
expectingWhite ? VColor.White : VColor.Black);
}
public void Checkers_should_repeat_in_z()
{
var pattern = new CheckerPattern(Color.White, Color.Black);
Assert.AreEqual(Color.White, pattern.ColorAt(Tuple.Point(0, 0, 0)));
Assert.AreEqual(Color.White, pattern.ColorAt(Tuple.Point(0, 0, 0.99)));
Assert.AreEqual(Color.Black, pattern.ColorAt(Tuple.Point(0, 0, 1.01)));
}
public void CheckerPatternZ()
{
var p = new CheckerPattern(Color.White, Color.Black);
Assert.That.VectorsAreEqual(p.At(Point(0f, 0f, 0f)), Color.White);
Assert.That.VectorsAreEqual(p.At(Point(0f, 0f, .99f)), Color.White);
Assert.That.VectorsAreEqual(p.At(Point(0f, 0f, 1.01f)), Color.Black);
}
public void ColorAt_should_repeat_in_z()
{
var pattern = new CheckerPattern(Colors.White, Colors.Black);
pattern.ColorAt(new Point(0, 0, 0)).Should().Be(Colors.White);
pattern.ColorAt(new Point(0, 0, 0.99)).Should().Be(Colors.White);
pattern.ColorAt(new Point(0, 0, 1.01)).Should().Be(Colors.Black);
}
public void CheckersRepeatZ()
{
Pattern black = new SolidPattern(Color.Black);
Pattern white = new SolidPattern(Color.White);
CheckerPattern pattern = new CheckerPattern(white, black);
Assert.True(Color.White == pattern.PatternAt(new Point(0, 0, 0)));
Assert.True(Color.White == pattern.PatternAt(new Point(0, 0, .99f)));
Assert.True(Color.Black == pattern.PatternAt(new Point(0, 0, 1.01f)));
}
public void BasicTest()
{
var pattern = new CheckerPattern(Color.White, Color.Black);
Check.That(pattern.GetColor(Helper.CreatePoint(0, 0, 0))).IsEqualTo(Color.White);
Check.That(pattern.GetColor(Helper.CreatePoint(0.99, 0, 0))).IsEqualTo(Color.White);
Check.That(pattern.GetColor(Helper.CreatePoint(1.01, 0, 0))).IsEqualTo(Color.Black);
Check.That(pattern.GetColor(Helper.CreatePoint(0, 0, 0))).IsEqualTo(Color.White);
Check.That(pattern.GetColor(Helper.CreatePoint(0, 0.99, 0))).IsEqualTo(Color.White);
Check.That(pattern.GetColor(Helper.CreatePoint(0, 1.01, 0))).IsEqualTo(Color.Black);
Check.That(pattern.GetColor(Helper.CreatePoint(0, 0, 0))).IsEqualTo(Color.White);
Check.That(pattern.GetColor(Helper.CreatePoint(0, 0, 0.99))).IsEqualTo(Color.White);
Check.That(pattern.GetColor(Helper.CreatePoint(0, 0, 1.01))).IsEqualTo(Color.Black);
Check.That(pattern.GetColor(Helper.CreatePoint(0, 0, 0))).IsEqualTo(Color.White);
Check.That(pattern.GetColor(Helper.CreatePoint(0.99, 0, 0.99))).IsEqualTo(Color.White);
Check.That(pattern.GetColor(Helper.CreatePoint(1.01, 1.01, 1.01))).IsEqualTo(Color.Black);
}
protected override Canvas Render(CameraRenderOptions options)
{
// Patterns
var checkerPattern = new CheckerPattern(
new StripePattern(
Colors.LightGray,
Colors.Gray,
Matrix4x4.CreateScaling(0.25, 0.25, 0.25).RotateY(-Math.PI / 8)),
new GradientPattern(new Color(1, 0.75, 0.75), new Color(1, 0.5, 0.5)),
Matrix4x4.CreateScaling(0.4, 0.4, 0.4));
var blendedPattern = new BlendedPattern(
new StripePattern(new Color(0.9, 1, 0.9), new Color(0, 1, 0), Matrix4x4.CreateRotationY(Math.PI / 2)),
new StripePattern(new Color(0.9, 1, 0.9), new Color(0, 1, 0)),
0.5);
var stripePattern = new StripePattern(
new GradientPattern(new Color(0.8, 0.8, 1), Colors.Blue),
new GradientPattern(Colors.Blue, new Color(0.8, 0.8, 1)),
Matrix4x4.CreateScaling(0.25, 0.25, 0.25)
.RotateZ(-Math.PI / 4)
.RotateY(-Math.PI / 6)
.Translate(0.4, 0, 0));
var gradientPattern = new RadialGradientPattern(
Colors.Green,
Colors.Yellow,
Matrix4x4.CreateScaling(0.25, 0.25, 0.25).RotateX(-Math.PI / 2));
var ringPattern = new RingPattern(
Colors.Red,
Colors.White,
Matrix4x4.CreateScaling(0.15, 0.15, 0.15).RotateX(-Math.PI / 2));
// Shapes
var floor = new Plane(
"Floor",
Matrix4x4.CreateRotationY(Math.PI / 4),
new Material(pattern: blendedPattern, specular: 0));
var backWall = new Plane(
"BackWall",
Matrix4x4.CreateRotationX(Math.PI / 2).Translate(0, 0, 5),
new Material(pattern: checkerPattern));
var left = new Sphere(
"Left",
Matrix4x4.CreateScaling(0.33, 0.33, 0.33).Translate(-2, 0.33, -0.75),
new Material(pattern: ringPattern, diffuse: 0.7, specular: 0.3));
var middle = new Sphere(
"Middle",
Matrix4x4.CreateTranslation(-0.5, 1, 0.5),
new Material(pattern: stripePattern, diffuse: 0.7, specular: 0.3));
var right = new Sphere(
"Right",
Matrix4x4.CreateScaling(0.5, 0.5, 0.5).Translate(1.5, 0.5, -0.5),
new Material(pattern: gradientPattern, diffuse: 0.7, specular: 0.3));
var light = new PointLight(new Point(-10, 10, -10), Colors.White);
var world = new World(light, floor, backWall, left, middle, right);
var cameraTransform = Matrix4x4.CreateLookAt(new Point(0, 1.5, -5), new Point(0, 1, 0), Vector.UnitY);
var camera = new Camera(CanvasWidth, CanvasHeight, Math.PI / 3, cameraTransform);
Canvas canvas = camera.Render(world, options);
return(canvas);
}
public void Given_checkers_pattern(string id, string aId, string bId)
{
patterns[id] = new CheckerPattern(colors[aId], colors[bId]);
}
