public void A_stripe_pattern_is_constant_in_z()
{
var pattern = new StripePattern(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, 1)));
Assert.AreEqual(Color.White, pattern.ColorAt(Tuple.Point(0, 0, 2)));
}
public void ColorAtZDirection()
{
var pattern = new StripePattern();
Assert.Equal(Color.White, pattern.ColorAt(new Sphere(), new Point(0, 0, 0)));
Assert.Equal(Color.White, pattern.ColorAt(new Sphere(), new Point(0, 0, 1)));
Assert.Equal(Color.White, pattern.ColorAt(new Sphere(), new Point(0, 0, 2)));
}
public void ColorAt_should_return_the_same_color_for_every_z_coordinate()
{
var pattern = new StripePattern(Colors.White, Colors.Black);
pattern.ColorAt(new Point(0, 0, 0)).Should().Be(Colors.White);
pattern.ColorAt(new Point(0, 0, 1)).Should().Be(Colors.White);
pattern.ColorAt(new Point(0, 0, 2)).Should().Be(Colors.White);
}
public void Pattern_Is_Constant_In_Z_Axis()
{
var pattern = new StripePattern(Color.White, Color.Black);
var unitSphere = new Sphere();
pattern.ColorAt(new Point(0, 0, 0), unitSphere).ShouldBe(Color.White);
pattern.ColorAt(new Point(0, 0, 1), unitSphere).ShouldBe(Color.White);
pattern.ColorAt(new Point(0, 0, 2), unitSphere).ShouldBe(Color.White);
}
public void ColorAt_should_alternate_colors_with_x_coordinates()
{
var pattern = new StripePattern(Colors.White, Colors.Black);
pattern.ColorAt(new Point(0, 0, 0)).Should().Be(Colors.White);
pattern.ColorAt(new Point(0.9, 0, 0)).Should().Be(Colors.White);
pattern.ColorAt(new Point(1, 0, 0)).Should().Be(Colors.Black);
pattern.ColorAt(new Point(-0.1, 0, 0)).Should().Be(Colors.Black);
pattern.ColorAt(new Point(-1.1, 0, 0)).Should().Be(Colors.White);
}
public void Stripes_With_An_Object_Transformation()
{
var pattern = new StripePattern(Color.White, Color.Black);
var sphere = new Sphere(Matrix4X4.CreateScale(2, 2, 2));
pattern.ColorAt(new Point(1.5, 0, 0), sphere).ShouldBe(Color.White);
}
public void ColorAtShapeShapeTransformation()
{
var sphere = new Sphere(Matrix4x4.Scaling(2, 2, 2));
var pattern = new StripePattern(SolidPattern.White, SolidPattern.Black);
Assert.Equal(Color.White, pattern.ColorAt(sphere, new Point(1.5f, 0, 0)));
}
public void Stripe_With_Pattern_Transformation()
{
var pattern = new StripePattern(Color.White, Color.Black)
{
TransformMatrix = Matrix4X4.CreateScale(2, 2, 2),
};
pattern.ColorAt(new Point(1.5, 0, 0), new Sphere()).ShouldBe(Color.White);
}
public void Stripe_With_Pattern_And_Object_Transform()
{
var pattern = new StripePattern(Color.White, Color.Black)
{
TransformMatrix = Matrix4X4.CreateTranslation(0.5, 0, 0),
};
var sphere = new Sphere(Matrix4X4.CreateScale(2, 2, 2));
pattern.ColorAt(new Point(2.5, 0, 0), sphere).ShouldBe(Color.White);
}
public void A_stripe_pattern_alternates_in_x()
{
var pattern = new StripePattern(Color.White, Color.Black);
Assert.AreEqual(Color.White, pattern.ColorAt(Tuple.Point(0, 0, 0)));
Assert.AreEqual(Color.White, pattern.ColorAt(Tuple.Point(0.9, 0, 0)));
Assert.AreEqual(Color.Black, pattern.ColorAt(Tuple.Point(1, 0, 0)));
Assert.AreEqual(Color.Black, pattern.ColorAt(Tuple.Point(-0.1, 0, 0)));
Assert.AreEqual(Color.Black, pattern.ColorAt(Tuple.Point(-1, 0, 0)));
Assert.AreEqual(Color.White, pattern.ColorAt(Tuple.Point(-1.1, 0, 0)));
}
public void ColorAtXDirection()
{
var pattern = new StripePattern();
Assert.Equal(Color.White, pattern.ColorAt(new Sphere(), new Point(0, 0, 0)));
Assert.Equal(Color.White, pattern.ColorAt(new Sphere(), new Point(0.9f, 0, 0)));
Assert.Equal(Color.Black, pattern.ColorAt(new Sphere(), new Point(1, 0, 0)));
Assert.Equal(Color.Black, pattern.ColorAt(new Sphere(), new Point(-0.1f, 0, 0)));
Assert.Equal(Color.Black, pattern.ColorAt(new Sphere(), new Point(-1, 0, 0)));
Assert.Equal(Color.White, pattern.ColorAt(new Sphere(), new Point(-1.1f, 0, 0)));
}
public void Pattern_Alternates_In_X_Axis()
{
var pattern = new StripePattern(Color.White, Color.Black);
var unitSphere = new Sphere();
pattern.ColorAt(new Point(0, 0, 0), unitSphere).ShouldBe(Color.White);
pattern.ColorAt(new Point(0.9, 0, 0), unitSphere).ShouldBe(Color.White);
pattern.ColorAt(new Point(1, 0, 0), unitSphere).ShouldBe(Color.Black);
pattern.ColorAt(new Point(2, 0, 0), unitSphere).ShouldBe(Color.White);
pattern.ColorAt(new Point(-0.1, 0, 0), unitSphere).ShouldBe(Color.Black);
pattern.ColorAt(new Point(-1.1, 0, 0), unitSphere).ShouldBe(Color.White);
}
private static void TestCase02()
{
// A stripe pattern is constant in y
StripePattern pattern = new StripePattern(white, black);
Assert.Equal(white, pattern.ColorAt(Tuple.Point(0, 0, 0)));
Assert.Equal(white, pattern.ColorAt(Tuple.Point(0, 1, 0)));
Assert.Equal(white, pattern.ColorAt(Tuple.Point(0, 2, 0)));
// A stripe pattern is constant in z
Assert.Equal(white, pattern.ColorAt(Tuple.Point(0, 0, 0)));
Assert.Equal(white, pattern.ColorAt(Tuple.Point(0, 0, 1)));
Assert.Equal(white, pattern.ColorAt(Tuple.Point(0, 0, 2)));
// A stripe pattern alternates in x
Assert.Equal(white, pattern.ColorAt(Tuple.Point(0, 0, 0)));
Assert.Equal(white, pattern.ColorAt(Tuple.Point(0.9f, 0, 0)));
Assert.Equal(black, pattern.ColorAt(Tuple.Point(1, 0, 0)));
Assert.Equal(black, pattern.ColorAt(Tuple.Point(-0.1f, 0, 0)));
Assert.Equal(black, pattern.ColorAt(Tuple.Point(-1, 0, 0)));
Assert.Equal(white, pattern.ColorAt(Tuple.Point(-1.1f, 0, 0)));
}