unity icon 面向相机

unity 场景中图标始终面向相机

using System.Collections;using System.Collections.Generic;using UnityEngine;public class IconFollow : MonoBehaviour {    //Quaternion direction;    // Use this for initialization    void Start()    {    }    // Update is called once per frame    void Update()    {        if(Camera.main&& Camera.main.gameObject.activeSelf)        {            transform.rotation = Camera.main.transform.rotation ;        }    }}