private void randomCircle()
{
Random r = new Random();
int cx1 = r.Next() % x;
int cy1 = r.Next() % y;
int cx2 = r.Next() % x;
int cy2 = r.Next() % y;
int cr = r.Next() % 50 + 10;
baseCanvas.Children.Clear();
Line e = new Line();
e.X1 = cx1;
e.Y1 = cy1;
e.X2 = cx2;
e.Y2 = cy2;
e.StrokeThickness = cr;
e.Stroke = new SolidColorBrush(Color.FromArgb((byte)(r.Next() % 200), (byte)(r.Next() % 200), (byte)(r.Next() % 200), (byte)(r.Next() % 200)));
e.Fill = new SolidColorBrush(Color.FromArgb((byte)(r.Next() % 200), (byte)(r.Next() % 200), (byte)(r.Next() % 200), (byte)(r.Next() % 200)));
e.AddHandler(Button.MouseLeftButtonDownEvent, new MouseButtonEventHandler(e_MouseLeftButtonDown), true);
baseCanvas.Children.Add(e);
}