public void The_Z_coord_of_the_result_equals_the_minimum_of_the_Z_coords_of_the_two_points()
{
var left = new Point(.1, .2, .3);
var right = new Point(.2, .1, 1.6);
Assert.Equal(System.Math.Min(left.Z, right.Z), Point.ElementsMin(left, right).Z);
}
public void RenderScene(RenderingContext context)
{
Ensure.That("context", context).IsNotNull();
//// transforms from image space into camera space
//var imageMatrix = Matrix.Scaling(1d / context.Target.Width, 1d / context.Target.Height, 1);
foreach (var pixel in context.Target.GetPixels()) {
var colorAccumulator = Color.Black;
foreach (var pixelSpaceSample in _pixelSampleGenerator.GenerateSamples(context.SamplesPerPixel)) {
var imageSpaceSample = new Point(pixel.X + pixelSpaceSample.X, pixel.Y + pixelSpaceSample.Y, 1);
var projectionSpaceRay = new Ray(context.ImageMatrix * imageSpaceSample, Vector.UnitZ);
var cameraSpaceRay = context.ProjectionMatrix * projectionSpaceRay;
// TODO: transform camera space ray into world space
colorAccumulator += _algorithm.DetermineRayColor(cameraSpaceRay, context.World);
}
context.Target.SetPixelColor(pixel, colorAccumulator / context.SamplesPerPixel);
}
}
public Color GetColorAt(Point point)
{
return Color;
}
public AxisAlignedBoundingBox(Point min, Point max)
{
Min = Point.ElementsMin(min, max);
Max = Point.ElementsMax(min, max);
}
public PointLight(Color emittedColor, Point position)
{
EmittedColor = emittedColor;
Position = position;
}
public Sphere(Point position, double radius)
{
Position = position;
Radius = radius;
}
public Triangle(Point a, Point b, Point c)
{
_a = a;
_b = b;
_c = c;
}
public void The_identity_matrix_should_result_in_the_same_point()
{
var point = new Point(1, 2, 3);
Assert.Equal(point, Matrix.Identity * point);
}