void InitVar()
 {
     m_pointer        = GetComponent <VRTK_Pointer>();
     m_playAreaCursor = GetComponent <VRTK_PlayAreaCursor>();
     m_interTouch     = GetComponent <VRTK_InteractTouch>();
     m_interGrab      = GetComponent <VRTK_InteractGrab>();
 }
 /// <summary>
 /// Observable PlayAreaCursorEndCollision event
 /// </summary>
 /// <param name="events"></param>
 /// <returns></returns>
 public static IObservable <PlayAreaCursorEventArgs> PlayAreaCursorEndCollisionAsObservable(this VRTK_PlayAreaCursor events)
 {
     return(Observable.FromEvent <PlayAreaCursorEventHandler, PlayAreaCursorEventArgs>(
                h => (s, e) => h(e),
                h => events.PlayAreaCursorEndCollision += h,
                h => events.PlayAreaCursorEndCollision -= h));
 }