// This function assures if the gestures stored are not null
private static void assureGestureResultViewNotNull(GestureResultView gestureResultView)
{
if (gestureResultView == null)
{
throw new ArgumentNullException("gestureResultView");
}
}
/// <summary>
///Initialization of the gesture detector class. The GestureResultView has the discrete results for the gesture detector
/// </summary>
/// <param name="kinectSensor">The active Kinect Sensor</param>
/// <param name="gestureResultView">It is an object which stores the gesture results</param>
public GestureDetector(KinectSensor kinectSensor, GestureResultView gestureResultView)
{
verifyKinectSensorExists(kinectSensor);
assureGestureResultViewNotNull(gestureResultView);
this.GestureResultView = gestureResultView;
// A valid body frame is the one with the valid tracking ID
this.vgbFrameSource = new VisualGestureBuilderFrameSource(kinectSensor, 0);
this.vgbFrameSource.TrackingIdLost += this.Source_TrackingIdLost;
// open the reader for the vgb frames
this.vgbFrameReader = this.vgbFrameSource.OpenReader();
if (this.vgbFrameReader != null)
{
this.vgbFrameReader.IsPaused = true;
this.vgbFrameReader.FrameArrived += this.Reader_GestureFrameArrived;
}
// load the trained gesture using VGB from the gesture database
using (VisualGestureBuilderDatabase database = new VisualGestureBuilderDatabase(this.gestureDatabase))
{
// Load all available gestures in the database with a call to vgbFrameSource.AddGestures(database.AvailableGestures),
foreach (Gesture gesture in database.AvailableGestures)
{
this.vgbFrameSource.AddGesture(gesture);
}
}
}
/// <summary>
/// Application logic for the Main Window.
/// SDK 2.0 can support one kinect sensor.
/// </summary>
public MainWindow()
{
this.kinectSensor = KinectSensor.GetDefault();
//This event handler is set to know if the Kinect sensor status is changed
this.kinectSensor.IsAvailableChanged += this.Sensor_IsAvailableChanged;
// To open the sensor to detect the bodies
this.kinectSensor.Open();
// The status text to find the status of Kinect
this.StatusText = this.kinectSensor.IsAvailable ? Properties.Resources.RunningStatusText
: Properties.Resources.NoSensorStatusText;
// open the body frame reader to read the data frames from Kinect
this.bodyFrameReader = this.kinectSensor.BodyFrameSource.OpenReader();
// This event notifier is used to identify if the body frame has arrived
this.bodyFrameReader.FrameArrived += this.Reader_BodyFrameArrived;
// It initializes the bodyviewer object to display tracked bodies in Presentation Layer
this.kinectBodyView = new BodyView(this.kinectSensor);
// initialize the gesture detection objects for the gestures
this.gestureDetectorList = new List <GestureDetector>();
// initialize the MainWindow
this.InitializeComponent();
// The data context objects are set to display in UI
this.DataContext = this;
this.kinectBodyViewbox.DataContext = this.kinectBodyView;
// The total bodies are six but we can use only one for the application
int col0Row = 0;
int col1Row = 0;
int maxBodies = this.kinectSensor.BodyFrameSource.BodyCount;
for (int i = 0; i < maxBodies; ++i)
{
GestureResultView result = new GestureResultView(i, false, false, 0.0f);
GestureDetector detector = new GestureDetector(this.kinectSensor, result);
this.gestureDetectorList.Add(detector);
// It is used for displaying gestures
ContentControl contentControl = new ContentControl();
contentControl.Content = this.gestureDetectorList[i].GestureResultView;
if (i % 2 == 0)
{
// For even number of bodies
Grid.SetColumn(contentControl, 0);
Grid.SetRow(contentControl, col0Row);
++col0Row;
}
else
{
// For odd number of bodies
Grid.SetColumn(contentControl, 1);
Grid.SetRow(contentControl, col1Row);
++col1Row;
}
// this.contentGrid.Children.Add(contentControl);
}
}