using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class openCamera : MonoBehaviour
{
    [HideInInspector]
    public  WebCamTexture webTex;
    [HideInInspector]
    public string deviceName;
    public static openCamera Instance;
    private static List<GameObject> mats=new List<GameObject>();
    void Start()
    {
        if (Instance!=null)
        {
            webTex = openCamera.Instance.webTex;
                setTexture(this.gameObject, webTex);
            mats.Add(this.gameObject);
        }
        else
        {
            Screen.sleepTimeout = SleepTimeout.NeverSleep;
            Instance = this;
            mats.Add(this.gameObject);
            StartCoroutine(CallCamera());
        }
    }
    public void setTexture(GameObject go,Texture tx)
    {

        MeshRenderer mr = go.GetComponent<MeshRenderer>();
        RawImage raw = go.GetComponent<RawImage>();
        
        if(mr ==null)
        {
            raw.texture = tx;
        }
        else
        {
            mr.material.mainTexture = tx;

        }
    }

    public void restart(int fps=30)
    {
        CustomInfo.FPS = fps;
         StartCoroutine(CallCamera());
    }
    void Update()
    {

    }  ///  
///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;
                if (webTex != null)
                {
                    webTex.Stop();
                    webTex = null;
                }
                //设置摄像机摄像的区域    
                webTex = new WebCamTexture(deviceName, 1920,1440, CustomInfo.FPS);
                for (int i = 0; i < mats.Count; i++)
                {
                    setTexture(mats[i], webTex);
                }
                webTex.Play();//开始摄像    
            }
    }
}