Unity Scene视图显示所有开启射线的UI

    static Vector3[] fourCorners = new Vector3[4];
    private void Awake()
    {
    	// 关闭移动设备上的显示 
        if (Application.platform == RuntimePlatform.WindowsEditor || Application.platform == RuntimePlatform.OSXEditor)
        {

        }
        else
        {
            this.enabled = false;
        }
    }
    void OnDrawGizmos()
    {
        foreach (MaskableGraphic g in GameObject.FindObjectsOfType<MaskableGraphic>())
        {
            if (g.raycastTarget)
            {
                RectTransform rectTransform = g.transform as RectTransform;
                rectTransform.GetWorldCorners(fourCorners);
                Gizmos.color = Color.red;
                for (int i = 0; i < 4; i++)
                    Gizmos.DrawLine(fourCorners[i], fourCorners[(i + 1) % 4]);

            }
        }
    }