unity判断UGUI的重合

unity的UI是何以重合的 我们可以利用RectTransform的性质来判断是否具有重合的部分

public RectTransform a;
    public RectTransform b;
    private void Update()
    {
        if (IsRectTransformOverlap(a, b))
        {
            Debug.LogError("重合");
        }
    }
    public static bool IsRectTransformOverlap(RectTransform rect1, RectTransform rect2)
    {
        float rect1MinX = rect1.position.x - rect1.rect.width / 2;
        float rect1MaxX = rect1.position.x + rect1.rect.width / 2;
        float rect1MinY = rect1.position.y - rect1.rect.height / 2;
        float rect1MaxY = rect1.position.y + rect1.rect.height / 2;
        float rect2MinX = rect2.position.x - rect2.rect.width / 2;
        float rect2MaxX = rect2.position.x + rect2.rect.width / 2;
        float rect2MinY = rect2.position.y - rect2.rect.height / 2;
        float rect2MaxY = rect2.position.y + rect2.rect.height / 2;

        bool notOverlap = rect1MaxX <= rect2MinX || rect2MaxX <= rect1MinX|| rect1MaxY <= rect2MinY || rect2MaxY <= rect1MinY;

        return !notOverlap;
    }

检测的是UGUI的框 不是本身显示的内容
比如text 如果两个text的框重合 就会检测到