public MainWindow()
        {
            InitializeComponent();
            ClrPcker_Background.Visibility = Visibility.Hidden;

            _voronoi = new VoronoiGenerator(_pointList);
        }
 private void _newClick(object sender, RoutedEventArgs e)
 {
     _pointList = new List <VectorNode>();
     _voronoi   = new VoronoiGenerator(_pointList);
     this.canvas1.Children.Clear();
 }