public MeshViewer()
 {
     InitializeComponent();
     gesture          = new RotateGesture3D(this);
     gesture.Changed += OnGestureChanged;
     this.Loaded     += OnMeshViewerLoaded;
 }
        public MainWindow()
        {
            InitializeComponent();
            this.Loaded += OnWindowLoaded;
            gesture = new RotateGesture3D(this);
            gesture.Changed += OnGestureChanged;
            settings = Settings.Load();

            this.Closing += OnWindowClosing;
        }