/// <summary>
/// Draws the ANN on the appropriate Canvas.
/// </summary>
private void DrawANN()
{
// Clear Canvas
AnnCanvas.Children.Clear();
// Save positions of neurons in this array
Point[] neuronPos = new Point[_ANN.GetTotalNumberOfNeurons()];
double neuronDiameter = 20.0;
double layerDist = (double)AnnCanvas.ActualWidth / (double)(_ANN.NumLayers - 1) - neuronDiameter;
RadialGradientBrush neuronBrush = new RadialGradientBrush();
neuronBrush.RadiusX = 1.0;
neuronBrush.RadiusY = 1.0;
neuronBrush.GradientOrigin = new Point(0.7, 0.3);
neuronBrush.GradientStops.Add(new GradientStop(Colors.White, 0.0));
neuronBrush.GradientStops.Add(new GradientStop(Colors.Black, 1.0));
#region Iterate over every layer
for (int l = 0; l < _ANN.NumLayers; l++)
{
double neuronDist = 0;
if (_ANN.GetNumNeurons(l) > 1)
{
neuronDist = (double)AnnBorder.ActualHeight / ((double)_ANN.GetNumNeurons(l));
}
else
{
neuronDist = (double)AnnBorder.ActualHeight / ((double)_ANN.GetNumNeurons(l));
}
#region Iterare over every neuron on the current layer
for (int n = 0; n < _ANN.GetNumNeurons(l); n++)
{
Ellipse e = new Ellipse();
e.Stroke = Brushes.White;
e.Width = neuronDiameter;
e.Height = neuronDiameter;
e.StrokeThickness = 2.0;
e.Fill = Brushes.White;
Canvas.SetLeft(e, layerDist * l);
Canvas.SetTop(e, neuronDist * n);
AnnCanvas.Children.Add(e);
// Safe the point of the current neuron for line drawing
neuronPos[_ANN.GetNumberOfNeuronsBefore(l) + n] = new Point(layerDist * l, neuronDist * n);
#region Draw all connections from previous layer to current neuron.
for (int i = 0; l > 0 && i < _ANN.GetNumNeurons(l - 1); i++)
{
Line line = new Line();
line.X1 = neuronPos[_ANN.GetNumberOfNeuronsBefore(l - 1) + i].X + neuronDiameter / 2.0;
line.Y1 = neuronPos[_ANN.GetNumberOfNeuronsBefore(l - 1) + i].Y + neuronDiameter / 2.0;
line.X2 = neuronPos[_ANN.GetNumberOfNeuronsBefore(l) + n].X + neuronDiameter / 2.0;
line.Y2 = neuronPos[_ANN.GetNumberOfNeuronsBefore(l) + n].Y + neuronDiameter / 2.0;
line.Stroke = Brushes.White;
line.StrokeThickness = 1;
line.Opacity = 0.5;
AnnCanvas.Children.Add(line);
}
#endregion
}
#endregion
}
#endregion
}