Unity调用外接摄像头的实例代码(C#)

 using UnityEngine;
 using System.Collections;
 using System.Threading;

 public class BtnControl : MonoBehaviour
 {
     public WebCamTexture webTex;
     public string deviceName;

     void Start()
     {

     }
     void Update()
     {

     }

     //绘制按钮
     void OnGUI()
     {
         //开始按钮
         if(GUI.Button(new Rect(0,10,100,30),"click"))
         {
             //调用启动那个协程,开启摄像头
             StartCoroutine(CallCamera());
         }
         //重启开始
         if (GUI.Button(new Rect(0,80,100,30), "restart"))
         {
             webTex.Play();
         }
         //绘制摄像头的显示区域以及大小
         if(webTex!=null)
             GUI.DrawTexture(new Rect(110,0,200,200), webTex);
     }
 ///
 ///调用摄像头
 ///
     IEnumerator CallCamera()
     {
         yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);
         if(Application.HasUserAuthorization(UserAuthorization.WebCam))
         {
             WebCamDevice[] devices = WebCamTexture.devices;
             deviceName = devices[0].name;
             //设置摄像机摄像的区域
             webTex=new WebCamTexture(deviceName,10,10,10);
             webTex.Play();//开始摄像
         }
     }
 }

运行结果：