--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Orchestland/Assets/LeapMotion+OVR/SystemWipe/SystemWipeRecognizerListener.cs	Fri Jul 17 23:09:20 2015 +0900
@@ -0,0 +1,105 @@
+using UnityEngine;
+using System;
+using Leap.Util;
+
+using System.Runtime.InteropServices;
+
+public class SystemWipeArgs : EventArgs {
+  private SystemWipeInfo m_wipeInfo;
+  
+  public SystemWipeInfo WipeInfo { get { return m_wipeInfo; } }
+  
+  public SystemWipeArgs(SystemWipeInfo wipeInfo) {
+    m_wipeInfo = wipeInfo;
+  }
+}
+
+public class SystemWipeRecognizerListener : MonoBehaviour {
+  
+  public event EventHandler<SystemWipeArgs> SystemWipeUpdate;
+  
+  public static SystemWipeRecognizerListener Instance;
+  
+  private SystemWipeInfo m_latestWipeInfo;
+  
+  private bool m_wipeInfoDirty = false;
+  
+  private object wipeInfoLock = new object();
+
+  /// <summary>
+  /// Singleton pattern
+  /// </summary>
+  void Awake() {
+    if ( Instance == null ) {
+      Instance = this;
+    }
+    else {
+      throw new Exception("Attempting to create multiple SystemWipeRecognizerListeners. Only the first recognizer will be listed.");
+    }
+  }
+  
+  void Update() {
+    // This code is not used in synchronous querying
+    //
+    lock(wipeInfoLock) {
+      if( m_wipeInfoDirty) {
+        EventHandler<SystemWipeArgs> handler = SystemWipeUpdate;
+        
+        if ( handler != null ) {
+          handler(this, new SystemWipeArgs(m_latestWipeInfo));
+        }
+        m_wipeInfoDirty = false;
+      }
+    }
+    
+    // Synchronous access:
+    //
+    
+    // Try to get latest swipe info
+    Leap.Util.SystemWipeInfo info = Leap.Util.SystemWipeRecognizerNative.GetNextSystemWipeInfo();
+    
+    // If one exists...
+    if (info.Status != Leap.Util.Status.InfoQueueEmpty)
+    {
+      // then save the lastest one ast m_latestWipeInfo
+      while (info.Status != Leap.Util.Status.InfoQueueEmpty)
+      {
+        m_latestWipeInfo = info;
+        //Debug.Log("Swipe " + info.Status + " " + info.Direction + " " + info.Progress);
+        info = Leap.Util.SystemWipeRecognizerNative.GetNextSystemWipeInfo();
+      }
+      
+      // Execute handler for one lastest info.
+      EventHandler<SystemWipeArgs> handler = SystemWipeUpdate;
+      if (handler != null) { handler(this, new SystemWipeArgs(m_latestWipeInfo)); }
+    }
+  }
+  
+  void SystemWipeInfoCallback(Leap.Util.SystemWipeInfo info)
+  {
+    //Debug.Log("Swipe " + info.Status + " " + info.Direction + " " + info.Progress);
+    lock(wipeInfoLock) {
+      m_wipeInfoDirty = true;
+      m_latestWipeInfo = info;
+    }
+  }
+  
+  // Called before the body's first Update() and, if you Disable the body it's called again before the first following Update().
+  void OnEnable()
+  {
+    // Callback delegate doesn't work as it is. We use synchronous querying in Update() instead.
+    
+    //systemWipeInfoDelegate = new Leap.Util.SystemWipeRecognizerNative.CallbackSystemWipeInfoDelegate(SystemWipeInfoCallback);
+    //Leap.Util.SystemWipeRecognizerNative.SetSystemWipeRecognizerCallback(Marshal.GetFunctionPointerForDelegate(systemWipeInfoDelegate));
+    
+    Leap.Util.SystemWipeRecognizerNative.EnableSystemWipeRecognizer();
+  }
+  
+  // Called when the body is disabled. Also called upon body destruction.
+  void OnDisable()
+  {
+    Leap.Util.SystemWipeRecognizerNative.DisableSystemWipeRecognizer(); 
+  }
+  
+  Leap.Util.SystemWipeRecognizerNative.CallbackSystemWipeInfoDelegate systemWipeInfoDelegate;
+}