Sitting posture recognition with Kinect sensor

using OpenNI;
using System;
using System.Timers;
namespace Nui.Vision
{
	public class NuiHandTracker : NuiContext
	{
		public delegate void HoverHandler(object sender, NuiPositionEventArgs e);
		public delegate void PushHandler(object sender, NuiPositionEventArgs e);
		private GestureGenerator _gestureGenerator;
		private HandsGenerator _handsGenerator;
		private Timer _timer = new Timer(300.0);
		private float _pushThreshold = 100f;
		private float _currentX;
		private float _currentY;
		private float _currentZ;
		private float _previousZ;
		private bool _isFirstPush;
		public event NuiHandTracker.HoverHandler Hover;
		public event NuiHandTracker.PushHandler Push;
		public NuiHandTracker(string configuration) : base(configuration)
		{
		}
		protected override void ConstrutorTemplate()
		{
			this._timer.Elapsed += new ElapsedEventHandler(this.Timer_Elapsed);
			this._timer.Start();
			this._gestureGenerator = new GestureGenerator(base.Context);
			this._gestureGenerator.AddGesture("Wave");
            this._gestureGenerator.GestureRecognized+=new EventHandler<GestureRecognizedEventArgs>(_gestureGenerator_GestureRecognized);
			//this._gestureGenerator.add_GestureRecognized(new System.EventHandler<GestureRecognizedEventArgs>(this.GestureGenerator_GestureRecognized));
			this._handsGenerator = new HandsGenerator(base.Context);
			//this._handsGenerator.add_HandCreate(new System.EventHandler<HandCreateEventArgs>(this.HandsGenerator_HandCreate));
           // this._handsGenerator.HandCreate+=new EventHandler<HandCreateEventArgs>(_handsGenerator_HandCreate);
            this._handsGenerator.HandUpdate+=new EventHandler<HandUpdateEventArgs>(_handsGenerator_HandUpdate);
			//this._handsGenerator.add_HandUpdate(new System.EventHandler<HandUpdateEventArgs>(this.HandsGenerator_HandUpdate));
            this._handsGenerator.HandDestroy+=new EventHandler<HandDestroyEventArgs>(_handsGenerator_HandDestroy);
			//this._handsGenerator.add_HandDestroy(new System.EventHandler<HandDestroyEventArgs>(this.HandsGenerator_HandDestroy));
			this._gestureGenerator.StartGenerating();
			this._handsGenerator.StartGenerating();
			base.State = NuiState.LookingForPose;
		}

        void _handsGenerator_HandDestroy(object sender, HandDestroyEventArgs e)
        {
            this._gestureGenerator.AddGesture("Wave");
        }

        void _handsGenerator_HandUpdate(object sender, HandUpdateEventArgs e)
        {
            Point3D position = e.Position;
            this._currentX = position.X;
            position = e.Position;
            this._currentY = position.Y;
            position = e.Position;
            this._currentZ = position.Z;
            this.Hover(this, new NuiPositionEventArgs(this._currentX, this._currentY, this._currentZ));
        }

        void _handsGenerator_HandCreate(object sender, HandCreateEventArgs e)
        {
          
        }

        void _gestureGenerator_GestureRecognized(object sender, GestureRecognizedEventArgs e)
        {
            this._handsGenerator.StartTracking(e.EndPosition);
            this._gestureGenerator.RemoveGesture(e.Gesture);
            base.State = NuiState.TrackingGesture;
        }
		protected override void ThreadTemplate()
		{
		}
		private void Timer_Elapsed(object sender, ElapsedEventArgs e)
		{
			if (System.Math.Abs(this._currentZ - this._previousZ) > this._pushThreshold)
			{
				if (this._isFirstPush)
				{
					if (this.Push != null)
					{
						this.Push(this, new NuiPositionEventArgs(this._currentX, this._currentY, this._currentZ));
					}
					this._isFirstPush = false;
				}
				else
				{
					this._isFirstPush = true;
				}
			}
			this._previousZ = this._currentZ;
		}
		private void GestureGenerator_GestureRecognized(object sender, GestureRecognizedEventArgs e)
		{
			this._handsGenerator.StartTracking(e.EndPosition);
			this._gestureGenerator.RemoveGesture(e.Gesture);
			base.State = NuiState.TrackingGesture;
		}
		private void HandsGenerator_HandCreate(object sender, HandCreateEventArgs e)
		{
		}
		private void HandsGenerator_HandUpdate(object sender, HandUpdateEventArgs e)
		{
			Point3D position = e.Position;
			this._currentX = position.X;
			position = e.Position;
			this._currentY = position.Y;
			position = e.Position;
			this._currentZ = position.Z;
			this.Hover(this, new NuiPositionEventArgs(this._currentX, this._currentY, this._currentZ));
		}
		private void HandsGenerator_HandDestroy(object sender, HandDestroyEventArgs e)
		{
			this._gestureGenerator.AddGesture("Wave");
		}
	}
}