Unity3d鼠标右键控制摄像机视角

//鼠标控制摄像机旋转方向
    public Transform Target;
    //旋转速度  
    private float SpeedX = 240;
    private float SpeedY = 120;

    //角度限制  
    private float MinLimitY = -180;
    private float MaxLimitY = 180;

    //旋转角度  
    private float mX = 0.0F;
    private float mY = 0.0F;

    //是否启用差值  
    public bool isNeedDamping = true;
    //速度  
    public float Damping = 10F;

    //存储角度的四元数  
    private Quaternion mRotation;

void LateUpdate () {

        //鼠标右键旋转  
        if (Input.GetMouseButton(1))
        {
            //获取鼠标输入  
            mX += Input.GetAxis("Mouse X") * SpeedX * 0.02F;
            mY -= Input.GetAxis("Mouse Y") * SpeedY * 0.02F;
            //范围限制  
            mY = ClampAngle(mY, MinLimitY, MaxLimitY);
            //计算旋转  
            mRotation = Quaternion.Euler(mY, mX, 0);
            //根据是否插值采取不同的角度计算方式  
            if (isNeedDamping)
            {
                transform.rotation = Quaternion.Lerp(transform.rotation, mRotation, Time.deltaTime * Damping);
            }
            else
            {
                transform.rotation = mRotation;
            }
        }
    }

    //角度限制  
    private float ClampAngle(float angle, float min, float max)
    {
        if (angle < -360) angle += 360;
        if (angle > 360) angle -= 360;
        return Mathf.Clamp(angle, min, max);
    }