unity 新input system 鼠标点在ui上检测的两种方法

哪种有用就用哪种。EventSystem.current.IsPointerOverGameObject()有可能不好使。

using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.InputSystem;
using UnityEngine.UI;
 
public class GameManager : MonoBehaviour
{
    //拖拽获取
    public GraphicRaycaster m_Raycaster;
    //拖拽获取
    public EventSystem m_EventSystem;
    private PointerEventData m_PointerEventData;
 
    public void OnMouseDown(InputAction.CallbackContext context)
    {
        if (context.phase == InputActionPhase.Performed)
        {//方法1
            //Set up the new Pointer Event
            PointerEventData m_PointerEventData = new PointerEventData(m_EventSystem);
            //Set the Pointer Event Position to that of the mouse position
            m_PointerEventData.position = Mouse.current.position.ReadValue();
 
            //Create a list of Raycast Results
            List<RaycastResult> results = new List<RaycastResult>();
 
            //Raycast using the Graphics Raycaster and mouse click position
            m_Raycaster.Raycast(m_PointerEventData, results);
 
            if (results.Count > 0)
            {
                Debug.Log("UI");
            }
//方法2
            if (!EventSystem.current.IsPointerOverGameObject())
            {
                Vector2 mousePosition = Mouse.current.position.ReadValue();
                Ray mouseRay = Camera.main.ScreenPointToRay(mousePosition);
                Physics.Raycast(mouseRay, out RaycastHit raycast);
                Debug.Log(raycast.collider.name);
            }
            else
            {
                Debug.Log("ui");
            }
        }
    }
 
}