Unity3D调用摄像头显示当前拍摄画面

原地址：http://blog.csdn.net/awnuxcvbn/article/details/18621265
using UnityEngine;  
using System.Collections;  
  
public class CameraTest : MonoBehaviour  
{  
    public WebCamTexture cameraTexture;  
    public string cameraName="";  
    private bool isPlay = false;  
    // Use this for initialization  
    void Start()  
    {  
        StartCoroutine(Test());  
    }  
  
    // Update is called once per frame  
    void Update()  
    {  
  
    }  
  
    IEnumerator Test()  
    {  
        yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);  
        if (Application.HasUserAuthorization(UserAuthorization.WebCam))  
        {  
            WebCamDevice[] devices = WebCamTexture.devices;  
            cameraName = devices[0].name;  
            cameraTexture = new WebCamTexture(cameraName, 400, 300, 15);  
            cameraTexture.Play();  
            isPlay = true;  
        }  
    }  
  
    void OnGUI()  
    {  
        if (isPlay)  
        {  
            GUI.DrawTexture(new Rect(0, 0, 400, 300), cameraTexture, ScaleMode.ScaleToFit);  
        }  
    }  
}