unity3d 简单画线

public GameObject line;    public Transform[] wayPoint;    int i;    void Start()    {        i=0;    }    void Update()    {        if(i<wayPoint.Length-1)        {            Vector3 tempPos=(wayPoint[i].position+wayPoint[i+1].position)/2;            GameObject go=(GameObject)Instantiate(line,tempPos,Quaternion.identity) ;            go.name=""+i;            go.transform.right=(go.transform.position-wayPoint[i].position).normalized;            float distance=Vector3.Distance(wayPoint[i].position,wayPoint[i+1].position);            go.transform.localScale=new Vector3(distance,0.01f,0.01f);            i++;        }     }