Blake.NUI.WPF.Gestures.DoubleTapGestureEngine.TrackTouchDown C# (CSharp) Method

    public void TrackTouchDown(Point position, DateTime timestamp)
    {
      if (IsCompleted || IsAborted)
        return;

      if (!firstTap.IsStarted)
      {
        firstTap.TrackTouchDown(position, timestamp);

        IsStarted = true;
        OnGestureStarted();
      }
      else if (!secondTap.IsStarted)
      {

        Vector delta = position - firstTap.EndPoint;
        if (delta.Length > _maxMovement)
        {
          AbortGesture();
          return;
        }

        _timer.Stop();
        secondTap.TrackTouchDown(position, timestamp);
      }
      else
      {
        AbortGesture();
      }
    }