转发UGUI事件响应

示例：点击UI时，被遮挡的UI也响应

using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class ClollideUI : MonoBehaviour, IPointerClickHandler
{
    private bool _toBlue;

    private void ChangeColor()
    {
        _toBlue = !_toBlue;
        GetComponent<Image>().material.SetColor("_Color", _toBlue ? Color.blue : Color.white);
    }

    public void OnPointerClick(PointerEventData eventData)
    {
        ChangeColor();
        ExecuteAll(eventData, ExecuteEvents.pointerClickHandler);
    }

    private void ExecuteAll<T>(PointerEventData eventData, ExecuteEvents.EventFunction<T> functor) where T : IEventSystemHandler
    {
        // 射线检测全部响应物体
        var results = new List<RaycastResult>();
        EventSystem.current.RaycastAll(eventData, results);

        // 转发事件给其他响应物体
        foreach (var result in results.Where(result => result.gameObject != gameObject))
        {
            ExecuteEvents.Execute(result.gameObject, eventData, functor);
        }
    }
}