private void AsyncDraw(AlgorithmProcessor algorithmProcessor, Complex center, double radius, int width, int height)
{
if (tokens.Count > 0 && !tokens.Peek().IsCancellationRequested)
{
tokens.Peek().Cancel();
//tokens.Peek().Dispose();
++currentTaskID;
}
var token = new CancellationTokenSource();
tokens.Push(token);
Task.Factory.StartNew(() =>
{
algorithmProcessor.GetBitmapSourceFromComplexGrid(
center, radius, width * 2, height * 2, currentTaskID, Report, token.Token);
}, token.Token).ContinueWith(new Action <Task>(t => t.Dispose()), token.Token);
void Report(BitmapSourceResult result)
{
Application.Current?.Dispatcher.BeginInvoke(new Action(() =>
{
if (!token.IsCancellationRequested && (Fractal.Tag == null || result.taskID != ((BitmapSourceResult)Fractal.Tag).taskID || result.timesSmaller < ((BitmapSourceResult)Fractal.Tag).timesSmaller))
{
lock (Fractal)
{
Fractal.Source = result.bitmap;
Fractal.Tag = result;
}
}
}));
} // end Report
} // end AsyncDraw
private void ComputeFractal()
{
if (Settings.Instance.Center == null || double.IsNaN(Fractal.Width) || double.IsNaN(Fractal.Height) || Fractal.Width == 0 || Fractal.Height == 0)
{
return;
}
var fractalFactory = new ComplexFractalFactory();
Colorer = new AlgorithmProcessor(fractalFactory.GetAutoConfiguredAlgorithmByID((Algorithm)Settings.Instance.algorithm,
AlgorithmFunction ?? Function));
AsyncDraw(Colorer, Settings.Instance.Center, Settings.Instance.Radius, (int)Fractal.Width, (int)Fractal.Height);
Status.Text = $"Radius={Settings.Instance.Radius}";
}
