关于unity3d调用摄像头的方法

using UnityEngine;
using System.Collections;

public class WebCam : MonoBehaviour 
{

    //    public Material webCamShow;    //1.普通的材质球渲染方式
    public UITexture webUITex;    //2.通过NGUI的UITexture方法渲染

    public string deviceName;

    private WebCamTexture tex;

    void Start()
    {
        StartCoroutine (webCam ());
    }

    IEnumerator webCam()
    {

            yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);

            if (Application.HasUserAuthorization(UserAuthorization.WebCam))  
            {  
                
                WebCamDevice[] devices = WebCamTexture.devices;  
                 
                deviceName = devices[0].name;  
                 
                tex= new WebCamTexture(deviceName, Screen.width, Screen.height, 12);  

                //webCamShow.mainTexture=tex;    //属于1方法的内容
                webUITex.mainTexture = tex;//属于2方法的内容

                tex.Play();

            }  
    }

}