SurfaceDialMenuItems

SurfaceDialMenuItems.cs

        enum ControllerMode { Zoom, Rotate, Disable };
        ControllerMode _controllerMode;

        public MapPagePage()
        {
            _locationService = new LocationService();
            Center = new Geopoint(_defaultPosition);
            ZoomLevel = DefaultZoomLevel;
            InitializeComponent();

            var controller = RadialController.CreateForCurrentView();
            controller.RotationResolutionInDegrees = 0.2;
            controller.UseAutomaticHapticFeedback = false;

            var mapZoomItem = RadialControllerMenuItem.CreateFromFontGlyph("El Bruno - Maps Zoom", "\xE128", "Segoe MDL2 Assets");
            var mapRotationItem = RadialControllerMenuItem.CreateFromFontGlyph("El Bruno - Map Rotation", "\xE128", "Segoe MDL2 Assets");
            var disableDialItem = RadialControllerMenuItem.CreateFromFontGlyph("El Bruno - Disable Dial", "\xE128", "Segoe MDL2 Assets");
            controller.Menu.Items.Add(mapZoomItem);
            controller.Menu.Items.Add(mapRotationItem);
            controller.Menu.Items.Add(disableDialItem);

            mapZoomItem.Invoked += MapZoomItem_Invoked;
            mapRotationItem.Invoked += MapRotationItem_Invoked;
            disableDialItem.Invoked += DisableDialItem_Invoked;  

            controller.RotationChanged += ControllerRotationChangedAsync;
        }

        private void DisableDialItem_Invoked(RadialControllerMenuItem sender, object args)
        {
            _controllerMode = ControllerMode.Disable;
        }

        private void MapRotationItem_Invoked(RadialControllerMenuItem sender, object args)
        {
            _controllerMode = ControllerMode.Rotate;
        }

        private void MapZoomItem_Invoked(RadialControllerMenuItem sender, object args)
        {
            _controllerMode = ControllerMode.Zoom;
        }

        private async void ControllerRotationChangedAsync(RadialController sender, RadialControllerRotationChangedEventArgs args)
        {
            Debug.WriteLine($"{args.RotationDeltaInDegrees}");
            switch (_controllerMode)
            {
                case ControllerMode.Zoom:
                    mapControl.ZoomLevel = mapControl.ZoomLevel + args.RotationDeltaInDegrees;
                    break;
                case ControllerMode.Rotate:
                    await mapControl.TryRotateAsync(args.RotationDeltaInDegrees);
                    break;
                default:
                    Debug.WriteLine($"No action!");
                    break;
            }
        }