public void Assigning_a_transformation()
{
var pattern = new TestPattern();
pattern.Transform = Transformation.Translation(1, 2, 3);
Assert.AreEqual(Transformation.Translation(1, 2, 3), pattern.Transform);
}
public void Stripes_with_a_pattern_transformation()
{
var sphere = Sphere.UnitSphere();
var pattern = new TestPattern();
pattern.Transform = Transformation.Scaling(2, 2, 2);
var color = pattern.PatternColorAtShape(sphere, Tuple.Point(2, 3, 4));
Assert.AreEqual(new Color(1, 1.5, 2), color);
}
public void Stripes_with_both_an_object_and_a_pattern_transformation()
{
var sphere = Sphere.UnitSphere();
sphere.Transform = Transformation.Scaling(2, 2, 2);
var pattern = new TestPattern();
pattern.Transform = Transformation.Translation(0.5, 1, 1.5);
var color = pattern.PatternColorAtShape(sphere, Tuple.Point(2.5, 3, 3.5));
Assert.AreEqual(new Color(0.75, 0.5, 0.25), color);
}
public void Group_and_object_and_pattern_transformation()
{
var group = new Group();
group.Transform = Transformation.Translation(1, 0, 0);
var sphere = Sphere.UnitSphere();
sphere.Transform = Transformation.Scaling(2, 2, 2);
group.AddChild(sphere);
var pattern = new TestPattern();
pattern.Transform = Transformation.Translation(1, 0, 0);
var color = pattern.PatternColorAtShape(sphere, Tuple.Point(3, 0, 0));
Assert.AreEqual(new Color(0, 0, 0), color);
}
public void The_default_pattern_transformation()
{
var pattern = new TestPattern();
Assert.AreEqual(Transformation.Identity, pattern.Transform);
}