//// ===========================================================================================================
//// Methods
//// ===========================================================================================================
public async Task <BitmapSource> RenderAsync(
double dpiX,
double dpiY,
int maxDegreeOfParallelism = -1,
IProgress <SceneRenderProgress>?progress = null,
CancellationToken cancellationToken = default)
{
_progress = progress;
_bitmap = new WriteableBitmap(CanvasWidth, CanvasHeight, dpiX, dpiY, PixelFormats.Bgr24, null);
try
{
// Render the scene.
var renderProgress = new Progress <RenderProgressStep>(OnRenderProgress);
var options = new CameraRenderOptions(maxDegreeOfParallelism, renderProgress, cancellationToken);
Canvas canvas = await Task.Run(() => Render(options), cancellationToken);
canvas.RenderToWriteableBitmap(_bitmap);
ReportProgress(100);
return(_bitmap);
}
finally
{
_progress = null;
_bitmap = null;
}
}
protected override Canvas Render(CameraRenderOptions options)
{
var floor = new Plane(material: new Material(new Color(1, 0.9, 0.9)).WithSpecular(0));
var middle = new Sphere(
"Middle",
Matrix4x4.CreateTranslation(-0.5, 1, 0.5),
new Material(new Color(0.1, 1, 0.5), 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(new Color(0.5, 1, 0.1), diffuse: 0.7, specular: 0.3)
);
var left = new Sphere(
"Left",
Matrix4x4.CreateScaling(0.33, 0.33, 0.33).Translate(-1.5, 0.33, -0.75),
new Material(new Color(1, 0.8, 0.1), diffuse: 0.7, specular: 0.3)
);
var light = new PointLight(new Point(-10, 10, -10), Colors.White);
var world = new World(light, floor, middle, right, left);
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);
}
protected override Canvas Render(CameraRenderOptions options)
{
// Floor
var floor = new Plane(
transform: Matrix4x4.CreateTranslation(0, -NumberExtensions.Epsilon, 0),
material: new Material(
pattern: new CheckerPattern(
Colors.Gray,
Colors.DarkGray,
Matrix4x4.CreateScaling(0.25, 0.25, 0.25)),
ambient: 0.2,
diffuse: 0.9,
specular: 0));
var pyramid = CreatePyramid();
pyramid.Material = new Material(Colors.Yellow, ambient: 0.2, diffuse: 0.9, specular: 0);
// Lights, camera, action.
var light = new PointLight(new Point(1, 7, -5), Colors.White);
var world = new World(light, floor, pyramid);
var cameraTransform = Matrix4x4.CreateLookAt(new Point(0, 3.5, -9), new Point(0, 0.3, 0), Vector.UnitY);
var camera = new Camera(CanvasWidth, CanvasHeight, fieldOfView: 0.314, cameraTransform);
Canvas canvas = camera.Render(world, options);
return(canvas);
}
//// ===========================================================================================================
//// Methods
//// ===========================================================================================================
protected override Canvas Render(CameraRenderOptions options)
{
var start = new Point(0, 1, 0);
var velocity = new Vector(1, 1.8, 0).Normalize() * 11.25;
var cannonball = new Projectile(start, velocity);
// gravity is -0.1 unit/tick and wind is -0.01 unit/tick
var gravity = new Vector(0, -0.1, 0);
var wind = new Vector(-0.01, 0, 0);
var environment = new Environment(gravity, wind);
var color = Colors.Magenta;
const int pixelBorderSize = 2;
var canvas = new MutableCanvas(CanvasWidth, CanvasHeight);
while (cannonball.Position.Y > 0)
{
cannonball = Tick(environment, cannonball);
int pointX = (int)Math.Round(cannonball.Position.X);
int pointY = (int)Math.Round(canvas.Height - cannonball.Position.Y);
canvas.FillRect(
top: pointY - pixelBorderSize,
left: pointX - pixelBorderSize,
bottom: pointY + pixelBorderSize,
right: pointX + pixelBorderSize,
color);
}
return(canvas.ToImmutable());
}
protected override Canvas Render(CameraRenderOptions options)
{
var canvas = new MutableCanvas(CanvasWidth, CanvasHeight);
int centerX = canvas.Width / 2;
int centerY = canvas.Height / 2;
double clockRadius = Math.Min(canvas.Width * (3d / 8), canvas.Height * (3d / 8));
var color = Colors.Cyan;
const int pixelBorderSize = 4;
// The clock is oriented along the y axis, which means when looking at it face-on you're looking
// towards the negative y axis and the clock face sits on the x-z plane.
var twelve = new Point(0, 0, 1);
const double rotationAngle = (2 * Math.PI) / 12;
for (int hour = 0; hour < 12; hour++)
{
// Rotate the twelve point around the y axis.
// Scale by the clock radius.
// Translate to the center of the canvas.
var transform = Matrix4x4.CreateRotationY(hour * rotationAngle);
Point hourPoint = transform * twelve;
int x = centerX + (int)Math.Round(hourPoint.X * clockRadius);
int y = centerY - (int)Math.Round(hourPoint.Z * clockRadius);
canvas.FillRect(
top: y - pixelBorderSize,
left: x - pixelBorderSize,
bottom: y + pixelBorderSize,
right: x + pixelBorderSize,
color);
}
return(canvas.ToImmutable());
}
protected override Canvas Render(CameraRenderOptions options)
{
// Patterns
var checkerPattern = new PerturbedPattern(new CheckerPattern(new Color(0.8, 1, 0.8), Colors.Green));
var stripePattern = new PerturbedPattern(
new StripePattern(
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 PerturbedPattern(
new RadialGradientPattern(
Colors.Green,
Colors.Yellow,
Matrix4x4.CreateScaling(0.25, 0.25, 0.25).RotateX(-Math.PI / 2)));
var ringPattern = new PerturbedPattern(
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: checkerPattern, specular: 0));
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, 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);
}
protected override Canvas Render(CameraRenderOptions options)
{
var canvas = new MutableCanvas(CanvasWidth, CanvasHeight);
var sphere = new Sphere();
var rayOrigin = new Point(0, 0, -5);
const double wallZ = 10;
const double wallSize = 7.0;
double pixelSize = wallSize / canvas.Width;
const double halfWallSize = wallSize / 2;
double totalPixels = canvas.Width * canvas.Height;
// For each row of pixels in the canvas...
for (int y = 0; y < canvas.Height; y++)
{
// Compute the world y coordinate (top = +half, bottom = -half).
double worldY = halfWallSize - (pixelSize * y);
// For each pixel in the row...
for (int x = 0; x < canvas.Width; x++)
{
// See if we should stop.
if (options.CancellationToken.IsCancellationRequested)
{
return(canvas.ToImmutable());
}
// Compute the world x coordinate (left = -half, right = +half).
double worldX = -halfWallSize + (pixelSize * x);
// Describe the point on the wall that the ray will target.
var position = new Point(worldX, worldY, wallZ);
// Cast the ray into the scene to see what it hits.
var ray = new Ray(rayOrigin, (position - rayOrigin).Normalize());
var intersections = sphere.Intersect(ray);
if (intersections.Hit != null)
{
canvas.SetPixel(x, y, Colors.Red);
}
}
// Report the progress.
double pixelsRendered = (y * CanvasWidth) + CanvasWidth;
int percentComplete = (int)Math.Round((pixelsRendered / totalPixels) * 100.0);
options.Progress?.Report(new RenderProgressStep(percentComplete, y, canvas.GetRow(y)));
}
return(canvas.ToImmutable());
}
protected override Canvas Render(CameraRenderOptions options)
{
var sphereMaterial = new Material(ambient: 0.2, diffuse: 0.8, specular: 0.3, shininess: 200);
var wristMaterial = sphereMaterial.WithColor(new Color(0.1, 1, 1));
var palmMaterial = sphereMaterial.WithColor(new Color(0.1, 0.1, 1));
var thumbMaterial = palmMaterial;
var indexMaterial = sphereMaterial.WithColor(new Color(1, 1, 0.1));
var middleMaterial = sphereMaterial.WithColor(new Color(0.1, 1, 0.5));
var ringMaterial = sphereMaterial.WithColor(new Color(0.1, 1, 0.1));
var pinkyMaterial = sphereMaterial.WithColor(new Color(0.1, 0.5, 1));
var backdrop = new Sphere(
"Backdrop",
Matrix4x4.CreateScaling(200, 200, 0.01).Translate(0, 0, 20),
new Material(Colors.White, ambient: 0, diffuse: 0.5, specular: 0));
var wrist = new Sphere(
"Wrist",
Matrix4x4.CreateScaling(3, 3, 3).Translate(-4, 0, -21).RotateZ(Math.PI / 4),
wristMaterial);
var palm = new Sphere("Palm", Matrix4x4.CreateScaling(4, 3, 3).Translate(0, 0, -15), palmMaterial);
var thumb = new Sphere("Thumb", Matrix4x4.CreateScaling(1, 3, 1).Translate(-2, 2, -16), thumbMaterial);
var index = new Sphere("Index", Matrix4x4.CreateScaling(3, 0.75, 0.75).Translate(3, 2, -22), indexMaterial);
var middle = new Sphere(
"Middle",
Matrix4x4.CreateScaling(3, 0.75, 0.75).Translate(4, 1, -19),
middleMaterial);
var ring = new Sphere("Ring", Matrix4x4.CreateScaling(3, 0.75, 0.75).Translate(4, 0, -18), ringMaterial);
var pinky = new Sphere(
"Pinky",
Matrix4x4.CreateScaling(2.5, 0.6, 0.6)
.Translate(1, 0, 0)
.RotateZ(Math.PI / 10)
.Translate(3, -1.5, -20),
pinkyMaterial);
var light = new PointLight(new Point(0, 0, -100), Colors.White);
var world = new World(light, backdrop, wrist, palm, thumb, index, middle, ring, pinky);
var cameraTransform = Matrix4x4.CreateLookAt(new Point(40, 0, -70), new Point(0, 0, -5), Vector.UnitY);
var camera = new Camera(CanvasWidth, CanvasHeight, 0.524, cameraTransform);
Canvas canvas = camera.Render(world, options);
return(canvas);
}
protected override Canvas Render(CameraRenderOptions options)
{
// Shapes
var backdrop = new Plane(
"Backdrop",
Matrix4x4.CreateRotationX(Math.PI / 2).Translate(0, 0, 100),
new Material(Colors.White, ambient: 1, diffuse: 0, specular: 0));
var ufo1 = CreateUfo()
.ChangeTransform(Matrix4x4.CreateRotationY(0.1745).RotateX(0.4363).Translate(-2.8, 0, 0))
.ChangeMaterial(
new Material(new Color(0.9, 0.2, 0.4), ambient: 0.2, diffuse: 0.8, specular: 0.7, shininess: 20));
var ufo2 = CreateUfo()
.ChangeTransform(Matrix4x4.CreateRotationY(0.1745))
.ChangeMaterial(
new Material(new Color(0.2, 0.9, 0.6), ambient: 0.2, diffuse: 0.8, specular: 0.7, shininess: 20));
var ufo3 = CreateUfo()
.ChangeTransform(Matrix4x4.CreateRotationY(-0.1745).RotateX(-0.4363).Translate(2.8, 0, 0))
.ChangeMaterial(
new Material(new Color(0.2, 0.3, 1), ambient: 0.2, diffuse: 0.8, specular: 0.7, shininess: 20));
// Lights
var light1 = new PointLight(new Point(10_000, 10_000, -10_000), Colors.DarkGray);
var light2 = new PointLight(new Point(-10_000, 10_000, -10_000), Colors.DarkGray);
var light3 = new PointLight(new Point(10_000, -10_000, -10_000), Colors.DarkGray);
var light4 = new PointLight(new Point(-10_000, -10_000, -10_000), Colors.DarkGray);
// Create the world.
var world = new World(new[] { light1, light2, light3, light4 }, new[] { backdrop, ufo1, ufo2, ufo3 });
// Create the camera.
var cameraTransform = Matrix4x4.CreateLookAt(new Point(0, 0, -9), new Point(0, 0, 0), Vector.UnitY);
var camera = new Camera(CanvasWidth, CanvasHeight, fieldOfView: 0.9, cameraTransform);
Canvas canvas = camera.Render(world, options);
return(canvas);
}
protected override Canvas Render(CameraRenderOptions options)
{
// Patterns
var map1 = new ColorMap(new ColorMapEntry(0, Colors.White));
var floorPattern = new PerlinPattern(map1, transform: Matrix4x4.CreateTranslation(-1000, 0, 0));
// Shapes
var floor = new Plane(
"Floor",
Matrix4x4.CreateRotationY(Math.PI / 4),
new Material(pattern: floorPattern, specular: 0));
var left = new Sphere(
"Left",
Matrix4x4.CreateScaling(0.33, 0.33, 0.33).Translate(-2, 0.33, -0.75),
new Material(pattern: floorPattern, diffuse: 0.7, specular: 0.3));
var middle = new Sphere(
"Middle",
Matrix4x4.CreateTranslation(-0.5, 1, 0.5),
new Material(pattern: floorPattern, 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: floorPattern, diffuse: 0.7, specular: 0.3));
var light = new PointLight(new Point(-10, 10, -10), Colors.White);
var world = new World(light, floor, 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);
}
protected override Canvas Render(CameraRenderOptions options)
{
// Materials
var wallMaterial = new Material(
pattern: new StripePattern(
new Color(0.45, 0.45, 0.45),
new Color(0.55, 0.55, 0.55),
Matrix4x4.CreateScaling(0.25, 0.25, 0.25).RotateY(Math.PI / 2)),
ambient: 0,
diffuse: 0.4,
specular: 0,
reflective: 0.3);
// Shapes
var floor = new Plane(
"Floor",
Matrix4x4.CreateRotationY(0.31415),
new Material(
pattern: new CheckerPattern(new Color(0.35, 0.35, 0.35), new Color(0.65, 0.65, 0.65)),
specular: 0,
reflective: 0.4));
var ceiling = new Plane(
"Ceiling",
Matrix4x4.CreateTranslation(0, 5, 0),
new Material(new Color(0.8, 0.8, 0.8), ambient: 0.3, specular: 0));
var westWall = new Plane(
"WestWall",
Matrix4x4.CreateRotationY(Math.PI / 2).RotateZ(Math.PI / 2).Translate(-5, 0, 0),
wallMaterial);
var eastWall = new Plane(
"EastWall",
Matrix4x4.CreateRotationY(Math.PI / 2).RotateZ(Math.PI / 2).Translate(5, 0, 0),
wallMaterial);
var northWall = new Plane("NorthWall", Matrix4x4.CreateRotationX(Math.PI / 2).Translate(0, 0, 5), wallMaterial);
var southWall = new Plane("SouthWall", Matrix4x4.CreateRotationX(Math.PI / 2).Translate(0, 0, -5), wallMaterial);
// Background hexagons
var backHex1 = new Hexagon(
"BackHex1",
Matrix4x4.CreateRotationX(Math.PI / 2).Scale(0.4, 0.4, 0.4).Translate(4.6, 0.5, 1),
new Material(new Color(0.8, 0.5, 0.3), shininess: 50));
var backHex2 = new Hexagon(
"BackHex2",
Matrix4x4.CreateRotationX(Math.PI / 2).Scale(0.3, 0.3, 0.3).Translate(4.7, 0.4, 0.4),
new Material(new Color(0.9, 0.4, 0.5), shininess: 50));
var backHex3 = new Hexagon(
"BackHex3",
Matrix4x4.CreateRotationX(Math.PI / 2).Scale(0.5, 0.5, 0.5).Translate(-1, 0.6, 4.5),
new Material(new Color(0.4, 0.9, 0.6), shininess: 50));
var backHex4 = new Hexagon(
"BackHex4",
Matrix4x4.CreateRotationX(Math.PI / 2).Scale(0.3, 0.3, 0.3).Translate(-1.7, 0.4, 4.7),
new Material(new Color(0.4, 0.6, 0.9), shininess: 50));
// Foreground hexagons
var redHex = new Hexagon(
"RedHex",
Matrix4x4.CreateRotationX(-Math.PI / 4).Translate(-0.6, 1.2, 0.6),
new Material(new Color(1, 0.3, 0.2), specular: 0.4, shininess: 5));
var blueGlassHex = new Hexagon(
"BlueGlassHex",
Matrix4x4.CreateRotationX(-Math.PI / 3)
.Scale(0.7, 0.7, 0.7)
.Translate(0.6, 0.8, -0.6)
.RotateY(Math.PI / 4),
new Material(
new Color(0, 0, 0.2),
ambient: 0,
diffuse: 0.4,
specular: 0.9,
shininess: 300,
reflective: 0.9,
transparency: 0.9,
refractiveIndex: 1.5));
var greenGlassHex = new Hexagon(
"GreenGlassHex",
Matrix4x4.CreateScaling(0.5, 0.5, 0.5).Translate(-0.7, 0.6, -0.8),
new Material(
new Color(0, 0.2, 0),
ambient: 0,
diffuse: 0.4,
specular: 0.9,
shininess: 300,
reflective: 0.9,
transparency: 0.9,
refractiveIndex: 1.5));
// Lights, camera, action.
var light = new PointLight(new Point(-4.9, 4.9, -1), Colors.White);
var world = new World(
light,
floor, ceiling, westWall, eastWall, northWall, southWall,
backHex1, backHex2, backHex3, backHex4,
redHex, blueGlassHex, greenGlassHex);
var cameraTransform = Matrix4x4.CreateLookAt(
new Point(-2.6, 1.5, -3.9),
new Point(-0.6, 1, -0.8),
Vector.UnitY);
var camera = new Camera(CanvasWidth, CanvasHeight, fieldOfView: 1.152, cameraTransform);
Canvas canvas = camera.Render(world, options);
return(canvas);
}
protected override Canvas Render(CameraRenderOptions options)
{
protected override Canvas Render(CameraRenderOptions options)
{
// Shapes
var floorCeiling = new Cube(
"FloorCeiling",
Matrix4x4.CreateTranslation(0, 1, 0).Scale(20, 7, 20),
new Material(
pattern: new CheckerPattern(
Colors.Black,
Colors.DarkGray,
Matrix4x4.CreateScaling(0.07, 0.07, 0.07)),
ambient: 0.25,
diffuse: 0.7,
specular: 0.9,
shininess: 300,
reflective: 0.1));
var walls = new Cube(
"Walls",
Matrix4x4.CreateScaling(10, 10, 10),
new Material(
pattern: new CheckerPattern(
new Color(0.4863, 0.3765, 0.2941),
new Color(0.3725, 0.2902, 0.2275),
Matrix4x4.CreateScaling(0.05, 20, 0.05)),
ambient: 0.1,
diffuse: 0.7,
specular: 0.9,
shininess: 300,
reflective: 0.1));
var csgUnion = new CsgShape(
"Union",
CsgOperation.Union,
new Cube(
"YellowCube",
Matrix4x4.CreateTranslation(0, 1.5, 0),
new Material(Colors.Yellow, diffuse: 0.7, specular: 0.3)),
new Sphere(
"RedSphere",
Matrix4x4.CreateTranslation(0.6, 2, -0.6),
new Material(Colors.Red, diffuse: 0.7, specular: 0.9)),
transform: Matrix4x4.CreateRotationY(-Math.PI / 3).Translate(-4, 0, -2));
var csgIntersection = new CsgShape(
"Intersection",
CsgOperation.Intersection,
new Cube(
"YellowCube",
Matrix4x4.CreateTranslation(0, 1.5, 0),
new Material(Colors.Yellow, diffuse: 0.7, specular: 0.3)),
new Sphere(
"RedSphere",
Matrix4x4.CreateTranslation(0.6, 2, -0.6),
new Material(Colors.Red, diffuse: 0.7, specular: 0.9)),
transform: Matrix4x4.CreateRotationY(-Math.PI / 2).Translate(0, 0, -2));
var csgDifference = new CsgShape(
"Difference",
CsgOperation.Difference,
new Cube(
"YellowCube",
Matrix4x4.CreateTranslation(0, 1.5, 0),
new Material(Colors.Yellow, diffuse: 0.7, specular: 0.3)),
new Sphere(
"RedSphere",
Matrix4x4.CreateTranslation(0.6, 2, -0.6),
new Material(Colors.Red, diffuse: 0.7, specular: 0)),
transform: Matrix4x4.CreateRotationY(-Math.PI / 6).Translate(3, 0, 2));
// Lights, camera, action.
var light = new PointLight(new Point(8, 8, -5), Colors.White);
var world = new World(light, floorCeiling, walls, csgUnion, csgIntersection, csgDifference);
var cameraTransform = Matrix4x4.CreateLookAt(new Point(8, 6, -8), new Point(0, 3, 0), Vector.UnitY);
var camera = new Camera(CanvasWidth, CanvasHeight, fieldOfView: 0.785, cameraTransform);
Canvas canvas = camera.Render(world, options);
return(canvas);
}
protected override Canvas Render(CameraRenderOptions options)
{
var canvas = new MutableCanvas(CanvasWidth, CanvasHeight);
var sphere = new Sphere(material: new Material(new Color(1, 0.2, 1)));
var lightPosition = new Point(-10, 10, -10);
var lightColor = Colors.White;
var light = new PointLight(lightPosition, lightColor);
var rayOrigin = new Point(0, 0, -5);
const int wallZ = 10;
const double wallSize = 7.0;
double pixelSize = wallSize / canvas.Width;
const double halfWallSize = wallSize / 2;
double totalPixels = canvas.Width * canvas.Height;
// For each row of pixels in the canvas...
for (int y = 0; y < canvas.Height; y++)
{
// Compute the world y coordinate (top = +half, bottom = -half).
double worldY = halfWallSize - (pixelSize * y);
// For each pixel in the row...
for (int x = 0; x < canvas.Width; x++)
{
// See if we should stop.
if (options.CancellationToken.IsCancellationRequested)
{
return(canvas.ToImmutable());
}
// Compute the world x coordinate (left = -half, right = +half).
double worldX = -halfWallSize + (pixelSize * x);
// Describe the point on the wall that the ray will target.
var position = new Point(worldX, worldY, wallZ);
// Cast the ray into the scene to see what it hits.
var ray = new Ray(rayOrigin, (position - rayOrigin).Normalize());
IntersectionList intersections = sphere.Intersect(ray);
Intersection? hit = intersections.Hit;
if (hit != null)
{
Point point = ray.PositionAt(hit.T);
Vector normal = hit.Shape.NormalAt(point);
Vector eye = ray.Direction.Negate();
Color color = hit.Shape.Material.CalculateLighting(hit.Shape, light, point, eye, normal, false);
canvas.SetPixel(x, y, color);
}
}
// Report the progress.
double pixelsRendered = (y * CanvasWidth) + CanvasWidth;
int percentComplete = (int)Math.Round((pixelsRendered / totalPixels) * 100.0);
options.Progress?.Report(new RenderProgressStep(percentComplete, y, canvas.GetRow(y)));
}
return(canvas.ToImmutable());
}
protected override Canvas Render(CameraRenderOptions options)
{
var floor = new Sphere(
"Floor",
Matrix4x4.CreateScaling(10, 0.01, 10),
new Material(new Color(1, 0.9, 0.9)).WithSpecular(0));
var leftWall = new Sphere(
"LeftWall",
Matrix4x4.CreateScaling(10, 0.01, 10)
.RotateX(Math.PI / 2)
.RotateY(-Math.PI / 4)
.Translate(0, 0, 5),
floor.Material
);
var rightWall = new Sphere(
"RightWall",
Matrix4x4.CreateScaling(10, 0.01, 10)
.RotateX(Math.PI / 2)
.RotateY(Math.PI / 4)
.Translate(0, 0, 5),
floor.Material
);
var middle = new Sphere(
"Middle",
Matrix4x4.CreateTranslation(-0.5, 1, 0.5),
new Material(new Color(0.1, 1, 0.5), 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(new Color(0.5, 1, 0.1), diffuse: 0.7, specular: 0.3)
);
var left = new Sphere(
"Left",
Matrix4x4.CreateScaling(0.33, 0.33, 0.33).Translate(-1.5, 0.33, -0.75),
new Material(new Color(1, 0.8, 0.1), diffuse: 0.7, specular: 0.3)
);
var light1 = new PointLight(new Point(-10, 10, -10), Colors.White);
var light2 = new PointLight(new Point(0, 10, -10), Colors.DarkGray);
var light3 = new PointLight(new Point(10, 10, -10), Colors.DarkGray);
var world = new World(
new[] { light1, light2, light3 },
new[] { floor, leftWall, rightWall, middle, right, left });
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);
}
protected override Canvas Render(CameraRenderOptions options)
{
// Colors
var tableLegColor = new Color(0.5529, 0.4235, 0.3255);
// Shapes
var floorCeiling = new Cube(
"FloorCeiling",
Matrix4x4.CreateTranslation(0, 1, 0).Scale(20, 7, 20),
new Material(
pattern: new CheckerPattern(
Colors.Black,
Colors.DarkGray,
Matrix4x4.CreateScaling(0.07, 0.07, 0.07)),
ambient: 0.25,
diffuse: 0.7,
specular: 0.9,
shininess: 300,
reflective: 0.1));
var walls = new Cube(
"Walls",
Matrix4x4.CreateScaling(10, 10, 10),
new Material(
pattern: new CheckerPattern(
new Color(0.4863, 0.3765, 0.2941),
new Color(0.3725, 0.2902, 0.2275),
Matrix4x4.CreateScaling(0.05, 20, 0.05)),
ambient: 0.1,
diffuse: 0.7,
specular: 0.9,
shininess: 300,
reflective: 0.1));
var tableTop = new Cube(
"TableTop",
Matrix4x4.CreateScaling(3, 0.1, 2).Translate(0, 3.1, 0),
new Material(
pattern: new StripePattern(
tableLegColor,
new Color(0.6588, 0.5098, 0.4000),
Matrix4x4.CreateRotationY(0.1).Scale(0.05, 0.05, 0.05)),
ambient: 0.1,
diffuse: 0.7,
specular: 0.9,
shininess: 300,
reflective: 0.2));
var leg1 = new Cube(
"Leg1",
Matrix4x4.CreateScaling(0.1, 1.5, 0.1).Translate(2.7, 1.5, -1.7),
new Material(tableLegColor, ambient: 0.2, diffuse: 0.7));
var leg2 = new Cube(
"Leg2",
Matrix4x4.CreateScaling(0.1, 1.5, 0.1).Translate(2.7, 1.5, 1.7),
new Material(tableLegColor, ambient: 0.2, diffuse: 0.7));
var leg3 = new Cube(
"Leg3",
Matrix4x4.CreateScaling(0.1, 1.5, 0.1).Translate(-2.7, 1.5, -1.7),
new Material(tableLegColor, ambient: 0.2, diffuse: 0.7));
var leg4 = new Cube(
"Leg4",
Matrix4x4.CreateScaling(0.1, 1.5, 0.1).Translate(-2.7, 1.5, 1.7),
new Material(tableLegColor, ambient: 0.2, diffuse: 0.7));
var glassCube = new Cube(
"GlassCube",
Matrix4x4.CreateScaling(0.25, 0.25, 0.25).RotateY(0.2).Translate(0, 3.45001, 0),
new Material(
new Color(1, 1, 0.8),
ambient: 0,
diffuse: 0.3,
specular: 0.9,
shininess: 300,
reflective: 0.7,
transparency: 0.7,
refractiveIndex: 1.5))
{
IsShadowHidden = true
};
var littleCube1 = new Cube(
"LittleCube1",
Matrix4x4.CreateScaling(0.15, 0.15, 0.15).RotateY(-0.4).Translate(1, 3.35, -0.9),
new Material(new Color(1, 0.5, 0.5), diffuse: 0.4, reflective: 0.6));
var littleCube2 = new Cube(
"LittleCube2",
Matrix4x4.CreateScaling(0.15, 0.07, 0.15).RotateY(0.4).Translate(-1.5, 3.27, 0.3),
new Material(new Color(1, 1, 0.5)));
var littleCube3 = new Cube(
"LittleCube3",
Matrix4x4.CreateScaling(0.2, 0.05, 0.05).RotateY(0.4).Translate(0, 3.25, 1),
new Material(new Color(0.5, 1, 0.5)));
var littleCube4 = new Cube(
"LittleCube4",
Matrix4x4.CreateScaling(0.05, 0.2, 0.05).RotateY(0.8).Translate(-0.6, 3.4, -1),
new Material(new Color(0.5, 0.5, 1)));
var littleCube5 = new Cube(
"LittleCube5",
Matrix4x4.CreateScaling(0.05, 0.2, 0.05).RotateY(0.8).Translate(2, 3.4, 1),
new Material(new Color(0.5, 1, 1)));
var frame1 = new Cube(
"Frame1",
Matrix4x4.CreateScaling(0.05, 1, 1).Translate(-10, 4, 1),
new Material(new Color(0.7098, 0.2471, 0.2196), diffuse: 0.6));
var frame2 = new Cube(
"Frame2",
Matrix4x4.CreateScaling(0.05, 0.4, 0.4).Translate(-10, 3.4, 2.7),
new Material(new Color(0.2667, 0.2706, 0.6902), diffuse: 0.6));
var frame3 = new Cube(
"Frame3",
Matrix4x4.CreateScaling(0.05, 0.4, 0.4).Translate(-10, 4.6, 2.7),
new Material(new Color(0.3098, 0.5961, 0.3098), diffuse: 0.6));
var mirrorFrame = new Cube(
"MirrorFrame",
Matrix4x4.CreateScaling(5, 1.5, 0.05).Translate(-2, 3.5, 9.95),
new Material(new Color(0.3882, 0.2627, 0.1882), diffuse: 0.7));
var mirror = new Cube(
"Mirror",
Matrix4x4.CreateScaling(4.8, 1.4, 0.06).Translate(-2, 3.5, 9.95),
new Material(Colors.Black, ambient: 0, diffuse: 0, specular: 1, shininess: 300, reflective: 1));
// Lights, camera, action.
var light = new PointLight(new Point(0, 6.9, -5), new Color(1, 1, 0.9));
var world = new World(
light,
floorCeiling,
walls,
tableTop,
leg1,
leg2,
leg3,
leg4,
glassCube,
littleCube1,
littleCube2,
littleCube3,
littleCube4,
littleCube5,
frame1,
frame2,
frame3,
mirrorFrame,
mirror);
var cameraTransform = Matrix4x4.CreateLookAt(new Point(8, 6, -8), new Point(0, 3, 0), Vector.UnitY);
var camera = new Camera(CanvasWidth, CanvasHeight, fieldOfView: 0.785, cameraTransform);
Canvas canvas = camera.Render(world, options);
return(canvas);
}
protected abstract Canvas Render(CameraRenderOptions options);
protected override Canvas Render(CameraRenderOptions options)
{
// Shapes
var floor = new Plane(material: new Material(
pattern: new CheckerPattern(
Colors.Gray,
Colors.DarkGray,
Matrix4x4.CreateScaling(0.25, 0.25, 0.25).RotateY(0.3)),
ambient: 0.2,
diffuse: 0.9,
specular: 0));
var blueCylinder = new Cone(
"BlueCylinder",
minimumY: 0,
maximumY: 0.75,
isClosed: true,
Matrix4x4.CreateScaling(0.5, 1, 0.5).Translate(-1, 0, 1),
new Material(new Color(0, 0, 0.6), diffuse: 0.1, specular: 0.9, shininess: 300, reflective: 0.9));
// Concentric Cylinders
var outer = new Cone(
minimumY: 0,
maximumY: 0.2,
transform: Matrix4x4.CreateScaling(0.8, 1, 0.8).Translate(1, 0, 0),
material: new Material(
new Color(1, 1, 0.3),
ambient: 0.1,
diffuse: 0.8,
specular: 0.9,
shininess: 300));
var middle = new Cone(
minimumY: 0,
maximumY: 0.3,
transform: Matrix4x4.CreateScaling(0.6, 1, 0.6).Translate(1, 0, 0),
material: new Material(
new Color(1, 0.9, 0.4),
ambient: 0.1,
diffuse: 0.8,
specular: 0.9,
shininess: 300));
var inner = new Cone(
minimumY: 0,
maximumY: 0.4,
transform: Matrix4x4.CreateScaling(0.4, 1, 0.4).Translate(1, 0, 0),
material: new Material(
new Color(1, 0.8, 0.5),
ambient: 0.1,
diffuse: 0.8,
specular: 0.9,
shininess: 300));
var solidInner = new Cone(
minimumY: 0,
maximumY: 0.5,
isClosed: true,
transform: Matrix4x4.CreateScaling(0.2, 1, 0.2).Translate(1, 0, 0),
material: new Material(
new Color(1, 0.7, 0.6),
ambient: 0.1,
diffuse: 0.8,
specular: 0.9,
shininess: 300));
// Decorative Cylinders
var red = new Cone(
minimumY: 0,
maximumY: 0.3,
isClosed: true,
transform: Matrix4x4.CreateScaling(0.05, 1, 0.05).Translate(0, 0, -0.75),
material: new Material(Colors.Red, ambient: 0.1, diffuse: 0.9, specular: 0.9, shininess: 300));
var yellow = new Cone(
minimumY: 0,
maximumY: 0.3,
isClosed: true,
transform: Matrix4x4.CreateScaling(0.05, 1, 0.05)
.Translate(0, 0, 1.5)
.RotateY(-0.15)
.Translate(0, 0, -2.25),
material: new Material(Colors.Yellow, ambient: 0.1, diffuse: 0.9, specular: 0.9, shininess: 300));
var green = new Cone(
minimumY: 0,
maximumY: 0.3,
isClosed: true,
transform: Matrix4x4.CreateScaling(0.05, 1, 0.05)
.Translate(0, 0, 1.5)
.RotateY(-0.3)
.Translate(0, 0, -2.25),
material: new Material(Colors.Green, ambient: 0.1, diffuse: 0.9, specular: 0.9, shininess: 300));
var cyan = new Cone(
minimumY: 0,
maximumY: 0.3,
isClosed: true,
transform: Matrix4x4.CreateScaling(0.05, 1, 0.05)
.Translate(0, 0, 1.5)
.RotateY(-0.45)
.Translate(0, 0, -2.25),
material: new Material(Colors.Cyan, ambient: 0.1, diffuse: 0.9, specular: 0.9, shininess: 300));
var glass = new Cone(
minimumY: 0.0001,
maximumY: 0.5,
isClosed: true,
transform: Matrix4x4.CreateScaling(0.33, 1, 0.33).Translate(0, 0, -1.5),
material: new Material(
new Color(0.25, 0, 0),
diffuse: 0.1,
specular: 0.9,
shininess: 300,
reflective: 0.9,
transparency: 0.9,
refractiveIndex: 1.5));
// Lights, camera, action.
var light = new PointLight(new Point(1, 6.9, -4.9), Colors.White);
var world = new World(light, floor, blueCylinder,
outer, middle, inner, solidInner,
red, yellow, green, cyan, glass);
var cameraTransform = Matrix4x4.CreateLookAt(new Point(8, 3.5, -9), new Point(0, 0.3, 0), Vector.UnitY);
var camera = new Camera(CanvasWidth, CanvasHeight, fieldOfView: 0.314, cameraTransform);
Canvas canvas = camera.Render(world, options);
return(canvas);
}
