private static void TestCase03()
{
// The reflected color for a nonreflective material
World w = new DefaultWorld();
Ray r = new Ray(Tuple.Point(0, 0, 0), Tuple.Vector(0, 0, 1));
Shape shape = w.Shapes[1];
shape.Material.Ambient = 1;
Intersection i = new Intersection(1, shape);
Computation comps = new Computation(i, r);
LightingModel l = new PhongReflection();
Tuple color = l.ReflectedColor(w, comps);
Assert.Equal(Tuple.Color(0, 0, 0), color);
}
private static void TestCase07()
{
// The reflected color at the maximum recursive depth
World w = new DefaultWorld();
Shape shape = new Plane();
shape.Material.Reflective = 0.5f;
shape.Transform = Transformation.Translation(0, -1, 0);
w.Shapes.Add(shape);
Ray r = new Ray(Tuple.Point(0, 0, -3), Tuple.Vector(0, -Sqrt(2) / 2, Sqrt(2) / 2));
Intersection i = new Intersection(Sqrt(2), shape);
Computation comps = new Computation(i, r);
LightingModel l = new PhongReflection();
Tuple color = l.ReflectedColor(w, comps, 0);
Assert.Equal(Tuple.Color(0, 0, 0), color);
}
private static void TestCase04()
{
// The reflected color for a reflective material
World w = new DefaultWorld();
Shape shape = new Plane();
shape.Material.Reflective = 0.5f;
shape.Transform = Transformation.Translation(0, -1, 0);
w.Shapes.Add(shape);
Ray r = new Ray(Tuple.Point(0, 0, -3), Tuple.Vector(0, -Sqrt(2) / 2, Sqrt(2) / 2));
Intersection i = new Intersection(Sqrt(2), shape);
Computation comps = new Computation(i, r);
LightingModel l = new PhongReflection();
Tuple color = l.ReflectedColor(w, comps);
Assert.Equal(0.19032f, color.X, 3);
Assert.Equal(0.2379f, color.Y, 3);
Assert.Equal(0.14274f, color.Z, 3);
}