public static Task TraceScene(
Camera camera,
World world,
DrawPixel drawPixel,
int maximumReflections,
CancellationToken cancelToken) =>
Task.Factory.StartNew(() =>
{
try
{
Parallel.ForEach(
Shuffled(GetAllPoints(camera.Dimensions)),
new ParallelOptions
{
CancellationToken = cancelToken,
},
(position, loopState) =>
{
var ray = camera.CreateRayForPixel(position.X, position.Y);
var color = world.ComputeColor(ray, maximumReflections);
drawPixel(position.X, position.Y, color);
});
}
catch (OperationCanceledException)
{
// Why does this throw??? What am I supposed to do here other than ignore it???
}
});
public static Task TraceSceneByRows(
Camera camera,
World world,
DrawPixel drawPixel,
int maximumReflections,
CancellationToken cancelToken,
Action reportRowRendered) =>
Task.Factory.StartNew(() => Parallel.For(
0, camera.Dimensions.Height,
new ParallelOptions {
CancellationToken = cancelToken
},
row =>
{
for (int col = 0; col < camera.Dimensions.Width; col++)
{
var ray = camera.CreateRayForPixel(col, row);
var color = world.ComputeColor(ray, maximumReflections);
drawPixel(col, row, color);
}
reportRowRendered();
}));
