RaycastTarget Gizmos 显示 （转载雨凇）

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

public class RaycastTargetGizmos : MonoBehaviour
{
#if UNITY_EDITOR
    static Vector3[] fourCorners = new Vector3[4];
    void OnDrawGizmos()
    {
        foreach (MaskableGraphic g in GameObject.FindObjectsOfType<MaskableGraphic>())
        {
            if (g.raycastTarget)
            {
                RectTransform rectTransform = g.transform as RectTransform;
                rectTransform.GetWorldCorners(fourCorners);
                Gizmos.color = Color.blue;
                for (int i = 0; i < 4; i++)
                    Gizmos.DrawLine(fourCorners[i], fourCorners[(i + 1) % 4]);

            }
        }
    }
#endif
}

使用方法，在场景中随意一个对象加上这个脚本，然后使用Gizmos开关这个脚本即可