private void BackgroundRender(object state)
{
var cancellationToken = (CancellationToken)state;
RayTracer rayTracer = new RayTracer(_width, _height, (rgb) =>
{
Task.Factory.StartNew(() =>
{
var bmpData = _image.LockBits(_rect, ImageLockMode.WriteOnly, _image.PixelFormat);
Marshal.Copy(rgb, 0, bmpData.Scan0, rgb.Length);
_image.UnlockBits(bmpData);
pbImage.Refresh();
}, CancellationToken.None, TaskCreationOptions.AttachedToParent, _uiScheduler);
});
if (_parallel)
{
rayTracer.RenderParallel(rayTracer.DefaultScene, cancellationToken);
}
else
{
rayTracer.RenderSequential(rayTracer.DefaultScene, cancellationToken);
}
}
private void RenderLoop(object boxedToken)
{
var cancellationToken = (CancellationToken)boxedToken;
// Create a ray tracer, and create a reference to "sphere2" that we are going to bounce
var rayTracer = new RayTracer(_width, _height);
var scene = rayTracer.DefaultScene;
var sphere2 = (Sphere)scene.Things[0]; // The first item is assumed to be our sphere
var baseY = sphere2.Radius;
sphere2.Center.Y = sphere2.Radius;
// Timing determines how fast the ball bounces as well as diagnostics frames/second info
var renderingTime = new Stopwatch();
var totalTime = Stopwatch.StartNew();
// Keep rendering until the rendering task has been canceled
while (!cancellationToken.IsCancellationRequested)
{
// Get the next buffer
var rgb = _freeBuffers.GetObject();
// Determine the new position of the sphere based on the current time elapsed
double dy2 = 0.8 * Math.Abs(Math.Sin(totalTime.ElapsedMilliseconds * Math.PI / 3000));
sphere2.Center.Y = baseY + dy2;
// Render the scene
renderingTime.Reset();
renderingTime.Start();
ParallelOptions options = new ParallelOptions {
MaxDegreeOfParallelism = _degreeOfParallelism, CancellationToken = _cancellation.Token
};
if (!_parallel)
{
rayTracer.RenderSequential(scene, rgb);
}
else if (_showThreads)
{
rayTracer.RenderParallelShowingThreads(scene, rgb, options);
}
else
{
rayTracer.RenderParallel(scene, rgb, options);
}
renderingTime.Stop();
// Update the bitmap in the UI thread
//var framesPerSecond = (++frame * 1000.0 / renderingTime.ElapsedMilliseconds);
var framesPerSecond = (1000.0 / renderingTime.ElapsedMilliseconds);
BeginInvoke((Action) delegate
{
// Copy the pixel array into the bitmap
var bmpData = _bitmap.LockBits(_rect, ImageLockMode.WriteOnly, _bitmap.PixelFormat);
Marshal.Copy(rgb, 0, bmpData.Scan0, rgb.Length);
_bitmap.UnlockBits(bmpData);
_freeBuffers.PutObject(rgb);
// Refresh the UI
pbRenderedImage.Invalidate();
Text = "Ray Tracer - FPS: " + framesPerSecond.ToString("F1");
});
}
}
