unity 鼠标点击在2D 物体上 和UI上

1.鼠标是否点击在2D 物体上

        /// <summary>
        /// 点击屏幕坐标
        /// </summary>
        /// <param name="position"></param>
        /// <returns></returns>
        public bool IsClickOn2DEntity(Vector2 position)
        {
            RaycastHit2D hit = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero);

            if (hit.collider != null && hit.collider.name==ZumaBgCircleBgName)
            {
                Debug.Log("Target" + hit.collider.name);
      
                return true;
            }
            return false;
        }

2.鼠标点击在UI上

        /// <summary>
        /// 获取鼠标停留处UI
        /// </summary>
        /// <param name="canvas"></param>
        /// <returns></returns>
        public bool IsClickOverUI(GameObject canvas)
        {
            PointerEventData pointerEventData = new PointerEventData(EventSystem.current);
            pointerEventData.position = Input.mousePosition;
            GraphicRaycaster gr = canvas.GetComponent<GraphicRaycaster>();
            List<RaycastResult> results = new List<RaycastResult>();
            gr.Raycast(pointerEventData, results);
            if (results.Count != 0)
            {
             //   Debug.Log(results[0].gameObject.name);
                return true;
            }

            return false;
        }