private async void WindowLoaded(object sender, RoutedEventArgs windowLoadedArgs)
{
// In XAML, we have specified a 3D scene containing a cube. We would like to use our hand to control the camera in this scene.
// The following gesture subscribes to the hand skeleton stream whenever our hand forms the pinch pose. The information in
// the skeleton stream will be used to move the camera.
// Data flow outline:
// [GestureServiceEndpoint]-----Skeleton----->[PalmSmoother]-----SmoothedPositionDelta----->[SphericalCamera]
// We would like to translate hand motion to camera motion. Because the palm position
// values in the skeleton stream contain some jitter, we smooth them (using a moving-average window).
_palmSmoother = new PalmSmoother();
// Define the gesture so that when the hand forms a pinch pose register to the skeleton stream and pass it to the palm smoother.
var pinchClose = new PinchPose("PinchClosePose", pinchSpread: false);
pinchClose.Triggered += (s, args) => _gesturesService.RegisterToSkeleton((s1, args1) => _palmSmoother.Smooth(args1.DefaultHandSkeleton));
_cameraPinch = new Gesture("CameraPinch", new PinchPose("PinchOpenPose", pinchSpread: true),
pinchClose,
new PinchPose("PinchReleasePose", pinchSpread: true));
_cameraPinch.IdleTriggered += (s, args) => _gesturesService.UnregisterFromSkeleton();
// The smoothed palm position is used to rotate the camera.
_sphericalCamera = new SphericalCamera(Camera, Dispatcher);
_palmSmoother.SmoothedPositionChanged += (s, args) => _sphericalCamera.UpdateCamera(args.SmoothedPositionDelta);
// Connect to the Gestures Service and register the gesture we've defined
_gesturesService = GesturesServiceEndpointFactory.Create();
_gesturesService.StatusChanged += (s, arg) => Dispatcher.Invoke(() => GesturesServiceStatus.Text = $"[{arg.Status}]");
await _gesturesService.ConnectAsync();
await _gesturesService.RegisterGesture(_cameraPinch);
}