using UnityEngine;
using System.Collections;
public class NewBehaviourScript : MonoBehaviour {
public GameObject TargetObject; //世界坐标中，需要对准的物体
public Camera worldcamera; //世界摄像机
public Camera guiCamera; //ui摄像机
//public GameObject obj;
// Use this for initialization
void Start () {
//
worldcamera = NGUITools.FindCameraForLayer (TargetObject.layer);
guiCamera = NGUITools.FindCameraForLayer (this.gameObject.layer);
}
void Update () {
}
void LateUpdate() {
//世界坐标到ui坐标的转换
Vector3 pos = worldcamera.WorldToScreenPoint (TargetObject.transform.position);
pos = guiCamera.ScreenToWorldPoint (pos);
pos.z = 0;
//改变ui上坐标的时候，C#中不能直接赋值x、y、z的值，需要给一个Vector3
transform.position = pos;
}
}