Unity 实现图片抖动

using UnityEngine;
using System.Collections;
//物体抖动
public class ObjectShake : MonoBehaviour {
    
    public bool isEnable=true;
    public Vector3 shakedegree=Vector3.one*0.1f;
    public float addDegreeTime=2;
    
    private Vector3 originPosition;
    private float timeCount;
    
    void Start()
    {
        originPosition=transform.localPosition;
    }
    
    void Update()
    {
        if(isEnable)
        {
            if(timeCount<addDegreeTime)
                timeCount+=Time.deltaTime;
            else
                timeCount=addDegreeTime;
            transform.localPosition=new Vector3(GetX(),GetY(),GetZ());
        }
        else
        {
            if(timeCount>0)
            {
                timeCount-=Time.deltaTime;
                transform.localPosition=new Vector3(GetX(),GetY(),GetZ());
            }
            else
            {
                transform.localPosition=originPosition;
            }
        }
    }
    
    private float GetX()
    {
        return originPosition.x+Random.Range(-1*timeCount*shakedegree.x,timeCount*shakedegree.x);
    }
    private float GetY()
    {
        return originPosition.y+Random.Range(-1*timeCount*shakedegree.y,timeCount*shakedegree.y);
    }
    private float GetZ()
    {
        return originPosition.z+Random.Range(-1*timeCount*shakedegree.y,timeCount*shakedegree.y);
    }
}