private void Selector_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
canvas.Children.Clear();
FractalGenerator gen = selector.SelectedItem as FractalGenerator;
//just to be extra safe
gen?.Setup();
numLines.Text = canvas.Children.Count.ToString();
}
private void Iterate_Click(object sender, RoutedEventArgs e)
{
FractalGenerator gen = selector.SelectedItem as FractalGenerator;
//just to be extra safe
gen?.Iterate();
//want: thread this so that that each line replacement is shown serially
numLines.Text = canvas.Children.Count.ToString();
}