Kinect 开发 —— WaveHand
基本注释都写了,就不废话了
<Window x:Class="KinectBasicHandTrackingFrameworkTest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="600" Width="800" xmlns:my="clr-namespace:KinectBasicHandTrackingFramework;assembly=KinectBasicHandTrackingFramework">
<Grid Background="#CCFFFF">
<!--自定义控件-->
<my:KinectButton Content="Kinect Button" Height="130" Width="130" HorizontalAlignment="Left" Margin="576,51,0,0" Name="kinectButton1" VerticalAlignment="Top" Click="Button_Click" Background="Red" KinectCursorLeave="Button_KinectCursorLeave" />
<my:HoverButton Content="Hover Button" Height="130" Width="130" HorizontalAlignment="Left" Margin="576,227,0,0" Name="hoverButton1" VerticalAlignment="Top" Click="Button_Click" Background="Red" KinectCursorLeave="Button_KinectCursorLeave"/>
<my:MagnetButton Content="Magnet Button" Height="130" Width="130" HorizontalAlignment="Left" Margin="576,395,0,0" Name="magnetButton1" VerticalAlignment="Top" Click="Button_Click" Background="Red" KinectCursorLeave="Button_KinectCursorLeave" />
<ListBox Height="306" HorizontalAlignment="Left" Margin="46,51,0,0" Name="listBox1" VerticalAlignment="Top" Width="296" />
</Grid>
</Window>
namespace KinectBasicHandTrackingFrameworkTest
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
private KinectSensor _kinectDevice;
private Skeleton[] _FrameSkeletons;
private WaveGesture _WaveGesture; // 此应用程序只能识别这一个手势,有待添加 public MainWindow()
{
InitializeComponent();
this._WaveGesture = new WaveGesture();
this._WaveGesture.GestureDetected += new EventHandler(_WaveGesture_GestureDetected); // 绑定事件,可以检测wave动作
this._kinectDevice = KinectSensor.KinectSensors.FirstOrDefault(x => x.Status == KinectStatus.Connected);
this._kinectDevice.SkeletonFrameReady += KinectDevice_SkeletonFrameReady;
} private void Button_Click(object sender, RoutedEventArgs e)
{
var button = sender as KinectButton; // 重写点击方法
button.Background = new SolidColorBrush(Colors.Green);
} private void Button_KinectCursorLeave(object sender, KinectCursorEventArgs e)
{
var button = sender as KinectButton;
button.Background = new SolidColorBrush(Colors.Red);
} private void KinectDevice_SkeletonFrameReady(object sender, SkeletonFrameReadyEventArgs e)
{
using (SkeletonFrame frame = e.OpenSkeletonFrame())
{
if (frame != null)
{
this._FrameSkeletons = new Skeleton[_kinectDevice.SkeletonStream.FrameSkeletonArrayLength];
frame.CopySkeletonDataTo(this._FrameSkeletons); DateTime startMarker = DateTime.Now; // 时间戳
this._WaveGesture.Update(this._FrameSkeletons, frame.Timestamp);
}
}
} private void _WaveGesture_GestureDetected(object sender, EventArgs e)
{
listBox1.Items.Add(string.Format("Wave Detected {0}", DateTime.Now.ToLongTimeString())); }
}
}
namespace KinectBasicHandTrackingFrameworkTest
{
public class WaveGesture
{
#region Member Variables
private const float WAVE_THRESHOLD = 0.1f;
private const int WAVE_MOVEMENT_TIMEOUT = ;
private const int LEFT_HAND = ;
private const int RIGHT_HAND = ;
private const int REQUIRED_ITERATIONS = ; private WaveGestureTracker[,] _PlayerWaveTracker = new WaveGestureTracker[, ]; public event EventHandler GestureDetected; // 表示将处理不包含事件数据的事件的方法
#endregion Member Variables #region Methods
public void Update(Skeleton[] skeletons, long frameTimestamp)
{
if (skeletons != null)
{
Skeleton skeleton; for (int i = ; i < skeletons.Length; i++)
{
skeleton = skeletons[i]; if (skeleton.TrackingState != SkeletonTrackingState.NotTracked)
{
TrackWave(skeleton, true, ref this._PlayerWaveTracker[i, LEFT_HAND], frameTimestamp); // 六个人分别检测左右手是否挥动
TrackWave(skeleton, false, ref this._PlayerWaveTracker[i, RIGHT_HAND], frameTimestamp);
}
else
{
this._PlayerWaveTracker[i, LEFT_HAND].Reset();
this._PlayerWaveTracker[i, RIGHT_HAND].Reset();
}
}
}
} private void TrackWave(Skeleton skeleton, bool isLeft, ref WaveGestureTracker tracker, long timestamp)
{
JointType handJointId = (isLeft) ? JointType.HandLeft : JointType.HandRight;
JointType elbowJointId = (isLeft) ? JointType.ElbowLeft : JointType.ElbowRight;
Joint hand = skeleton.Joints[handJointId];
Joint elbow = skeleton.Joints[elbowJointId]; if (hand.TrackingState != JointTrackingState.NotTracked && elbow.TrackingState != JointTrackingState.NotTracked)
{
if (tracker.State == WaveGestureState.InProgress && tracker.Timestamp + WAVE_MOVEMENT_TIMEOUT < timestamp) // 超过规定时间仍未完成
{
tracker.UpdateState(WaveGestureState.Failure, timestamp);
System.Diagnostics.Debug.WriteLine("Fail!");
}
else if (hand.Position.Y > elbow.Position.Y)
{
//Using the raw values where (0, 0) is the middle of the screen. From the user's perspective, the X-Axis grows more negative left and more positive right.
// 右手坐标系,Z轴射出,Y轴向上,X轴向左,坐标系的单位为米
if (hand.Position.X <= elbow.Position.X - WAVE_THRESHOLD)
{
tracker.UpdatePosition(WavePosition.Left, timestamp);
}
else if (hand.Position.X >= elbow.Position.X + WAVE_THRESHOLD)
{
tracker.UpdatePosition(WavePosition.Right, timestamp);
}
else
{
tracker.UpdatePosition(WavePosition.Neutral, timestamp);
} if (tracker.State != WaveGestureState.Success && tracker.IterationCount == REQUIRED_ITERATIONS)
{
tracker.UpdateState(WaveGestureState.Success, timestamp); // 重置
System.Diagnostics.Debug.WriteLine("Success!"); if (GestureDetected != null)
{
GestureDetected(this, new EventArgs());
}
}
}
else
{
if (tracker.State == WaveGestureState.InProgress)
{
tracker.UpdateState(WaveGestureState.Failure, timestamp);
System.Diagnostics.Debug.WriteLine("Fail!");
}
else
{
tracker.Reset();
}
}
}
else
{
// 关节点未成功跟踪,重置
tracker.Reset();
}
}
#endregion Methods #region Helper Objects
private enum WavePosition
{
None = ,
Left = ,
Right = ,
Neutral =
} private enum WaveGestureState
{
None = ,
Success = ,
Failure = ,
InProgress =
} private struct WaveGestureTracker
{
public int IterationCount;
public WaveGestureState State;
public long Timestamp;
public WavePosition StartPosition;
public WavePosition CurrentPosition; public void UpdateState(WaveGestureState state, long timestamp)
{
State = state;
Timestamp = timestamp;
} public void Reset()
{
IterationCount = ;
State = WaveGestureState.None;
Timestamp = ;
StartPosition = WavePosition.None;
CurrentPosition = WavePosition.None;
} public void UpdatePosition(WavePosition position, long timestamp)
{
if (CurrentPosition != position)
{
if (position == WavePosition.Left || position == WavePosition.Right)
{
if (State != WaveGestureState.InProgress)
{ // 若向左或向右但不是处理状态(None ,Success ,Failure) ,则重置
State = WaveGestureState.InProgress;
IterationCount = ;
StartPosition = position;
} IterationCount++; // 挥手过程中状态改变,迭代数++
} CurrentPosition = position; // 状态重置
Timestamp = timestamp;
}
}
}
#endregion Helper Objects
}
}
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