yichael_smartbow/Assets/BowArrow/Scripts/Game/CrossHairOutBoundChecker.cs

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

public class CrossHairOutBoundChecker : MonoBehaviour
{
    [SerializeField] GameObject outTip;

    void Update()
    {
        Rect pr = CrossHair.ins.parentRTF.rect;
        Vector3 lp = CrossHair.ins.transform.localPosition;
        if (Mathf.Abs(lp.x) > pr.width / 2 || Mathf.Abs(lp.y) > pr.height / 2) {
            if (!outTip.activeSelf) outTip.SetActive(true);
        } else {
            if (outTip.activeSelf) outTip.SetActive(false);
        }
    }
}