/// <summary>
    /// 记录第一次进入检测的手是左手还是右手.
    /// 1.枚举为None时
    ///     1.1检测到一只手,指定为该手
    ///     1.2检测到两只手,指定[0]下标
    ///     1.3检测到0只手,指定None
    /// 2.枚举为Right/Legt时
    ///     2.1检测到1只手,指定为该手
    ///     2.2检测到2之手,不变
    ///     2.3检测到0只收,设定为None
    /// </summary>
    void SaveAboveViewHand()
    {
        Frame    frame = m_LeapCtrl.Frame();
        HandList hands = frame.Hands;
        int      count = hands.Count;

        if (m_AboveView == E_HandInAboveView.None)
        {
            if (count == 1 || count == 2)
            {
                bool isRight = hands[0].IsRight;
                if (isRight)
                {
                    m_AboveView = E_HandInAboveView.Right;
                }
                else
                {
                    m_AboveView = E_HandInAboveView.Left;
                }
            }
        }
        else
        {
            if (count == 1)
            {
                bool isRight = hands[0].IsRight;
                if (isRight)
                {
                    m_AboveView = E_HandInAboveView.Right;
                }
                else
                {
                    m_AboveView = E_HandInAboveView.Left;
                }
            }
            else if (count == 0)
            {
                m_AboveView = E_HandInAboveView.None;
            }
        }
    }
    /// <summary>
    /// 记录第一次进入检测的手是左手还是右手.
    /// 1.枚举为None时
    ///     1.1检测到一只手,指定为该手
    ///     1.2检测到两只手,指定[0]下标
    ///     1.3检测到0只手,指定None
    /// 2.枚举为Right/Legt时
    ///     2.1检测到1只手,指定为该手
    ///     2.2检测到2之手,不变
    ///     2.3检测到0只收,设定为None
    /// </summary>
    void SaveAboveViewHand()
    {
        Frame frame = m_LeapCtrl.Frame();
        HandList hands = frame.Hands;
        int count = hands.Count;

        if(m_AboveView== E_HandInAboveView.None)
        {
            if(count ==1||count==2)
            {
                bool isRight = hands[0].IsRight;
                if(isRight)
                {
                    m_AboveView = E_HandInAboveView.Right;
                }
                else
                {
                    m_AboveView = E_HandInAboveView.Left;
                }
            }
        }
        else
        {
            if(count==1)
            {
                bool isRight = hands[0].IsRight;
                if(isRight)
                {
                    m_AboveView = E_HandInAboveView.Right;
                }
                else
                {
                    m_AboveView = E_HandInAboveView.Left;
                }
            }
            else if(count==0)
            {
                m_AboveView = E_HandInAboveView.None;
            }
        }
    }