图标跟着摄像机（Camera）orthographicSize的值改变大小

默认摄像机(Camera)orthographicSize默认大小为51

       #region //滚轮滑动，大地图放大缩小
        if (Input.GetAxis("Mouse ScrollWheel") < 0)
        {
            if (screenView_1Main.myEquipSearch.issearch == false)
            {
                if (m_bigMapCameraComponent.orthographicSize <= 46)
                {
                    m_bigMapCameraComponent.orthographicSize += 5;  //根据这个变化值进行判断
                    m_bigMapSphere.transform.localScale = new Vector3(m_bigMapSphere.transform.localScale.x + 0.4f, m_bigMapSphere.transform.localScale.y + 0.4f, m_bigMapSphere.transform.localScale.z + 0.4f);

                    //图标放大      //根据orthographicSize 变化值进行判断
                    if (m_bigMapCameraComponent.orthographicSize <= 41)
                    {
                        _bigmapPoint.transform.localScale = new Vector3(m_bigMapCameraComponent.orthographicSize / 2, m_bigMapCameraComponent.orthographicSize / 2, m_bigMapCameraComponent.orthographicSize / 2);
                    }
                    else if (m_bigMapCameraComponent.orthographicSize == 46)
                    {
                        _bigmapPoint.transform.localScale = new Vector3(21, 21, 21);
                    }
                    else if (m_bigMapCameraComponent.orthographicSize == 51)
                    {
                        _bigmapPoint.transform.localScale = new Vector3(22, 22, 22);
                    }

                    //m_targetScreenPos = m_bigMapCameraComponent.WorldToScreenPoint(screenView_1Main.my_mouseController.target.transform.position);
                    m_targetWorldPos = m_bigMapCameraComponent.ScreenToWorldPoint(m_targetScreenPos);
                    m_bigMapCamera.transform.position -= (m_targetWorldPos - screenView_1Main.my_mouseController.target.transform.position);

                    m_bigMapCamera.transform.localPosition = Vector3.Lerp(m_bigMapCamera.transform.localPosition, Vector3.zero, m_bigMapCameraComponent.orthographicSize / 51.0f);
                    if (Selectthebox != null)
                    {
                        Selectthebox.transform.GetComponent<RectTransform>().localScale = new Vector3(25, 25, 1);
                        //Selectthebox.transform.GetComponent<RectTransform>().localScale = new Vector3(100f+m_bigMapCameraComponent.orthographicSize, 100f+m_bigMapCameraComponent.orthographicSize, 1);
                    }

                   
                    //bigmapPoint.transform.localScale
                }
            }

        }