HeatMap crashes when zooming out a lot.

[YusufMavzer]

When zooming out of the heatmap up until it's not visible the library throws an

System.ArgumentException: 'Value does not fall within the expected range.' InnerException: ArgumentException: Value does not fall within the expected range.

Class -> BackgroundBitmapRenderer Method -> OnTaskCompleted(RenderResult r, RenderTaskState state)

line of code that causes the crash WriteableBitmap wr = new WriteableBitmap((int)r.Output.Width, (int)r.Output.Height, 96, 96, PixelFormats.Bgra32, null);

If you could adjust that method by adding an extra if statement that would be great. Then I can just update library through nuget

Solution Class BackgroundBitmapRenderer

private void OnTaskCompleted(RenderResult r, RenderTaskState state)
        {
            if (r != null && !state.IsCanceled)
            {
                if ((int)r.Output.Width >= 1 || (int)r.Output.Height >= 1) {  //-----------This if statement can fix it--------------------
                    WriteableBitmap wr = new WriteableBitmap((int)r.Output.Width, (int)r.Output.Height, 96, 96, PixelFormats.Bgra32, null);
                    // Calculate the number of bytes per pixel. 
                    int bytesPerPixel = (wr.Format.BitsPerPixel + 7) / 8;
                    // Stride is bytes per pixel times the number of pixels.
                    // Stride is the byte width of a single rectangle row.
                    int stride = wr.PixelWidth * bytesPerPixel;
                    wr.WritePixels(new Int32Rect(0, 0, wr.PixelWidth, wr.PixelHeight), r.Image, stride, 0);

                    outputImage.Source = wr;
                    Canvas.SetLeft(outputImage, r.Output.Left);
                    Canvas.SetTop(outputImage, r.Output.Top);
                    imageCartesianRect = r.Visible;
                    imageSize = new Size(r.Output.Width, r.Output.Height);
                    outputImage.RenderTransform = null;
                }             
            }
            RaiseTaskCompletion(state.Id);

            runningTasks.Remove(state);

            while (tasks.Count > 1)
            {
                long id = tasks.Dequeue();
                RaiseTaskCompletion(id);
            }
            if (tasks.Count > 0 && runningTasks.Count < maxTasks)
            {
                EnqueueTask(tasks.Dequeue());
            }

            InvalidateMeasure();
        }

[07012220]

yes, i found it too