public void T10_RadialGradientPattern()
{
Pattern pattern = new RadialGradientPattern();
Scene scene = new Scene();
Light light = new Light(new Point(-5, 5, -5), Color.white);
Light light2 = new Light(new Point(5, 0.4, -5), new Color(0.6, 0.6, 0.15));
Plane floor = new Plane();
floor.material = new Material(new Color(1, 0, 0));
floor.material.pattern = new RingPattern(new SolidColorPattern(Color.white),
new SolidColorPattern(Color.black));
Plane wall = new Plane();
wall.material = new Material(new Color(0, 0, 1));
wall.SetMatrix(Mat4.RotateXMatrix(Constants.pi / 2.0) *
Mat4.TranslateMatrix(0, 0, 4));
wall.material.pattern = pattern;
Sphere sphere1 = new Sphere();
sphere1.SetMatrix(Mat4.TranslateMatrix(0, 0.5, -3) *
Mat4.ScaleMatrix(0.5, 0.5, 0.5));
sphere1.material.pattern = pattern;
Sphere sphere2 = new Sphere();
sphere2.SetMatrix(Mat4.TranslateMatrix(2, 1.0, -1));
sphere2.material.pattern = pattern;
Camera camera = new Camera(640, 480, Constants.pi / 3.0);
//Need to halt execution if I end up with NaN
camera.ViewTransform(new Point(0, 2, -10),
new Point(0, 2, 4),
new Vector(0, 1, 0));
Canvas canvas = Scene.current.Render(camera);
Save.SaveCanvas(canvas, "Chapter10_RadialGradient");
}
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);
}
