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unity打开移动摄像头，并自适应屏幕显示摄像头数据。兼容android和ios

分类: 文章 • 2024-06-08 21:07:22
跨平台并自适应显示摄像头数据
新建工程并建立UI
unity打开移动摄像头，并自适应屏幕显示摄像头数据。兼容android和ios
raw_Image的参数设置如下：

unity打开移动摄像头，并自适应屏幕显示摄像头数据。兼容android和ios

设置两个Canvas_UI和Canvas_Web的CamRender Mode都为Screen Space - Camera，并将Camera拖入。
设置Canvas_UI的层级高于Canvas_WebCam

编写脚本，并将脚本挂在Canvas_WebCamunity打开移动摄像头，并自适应屏幕显示摄像头数据。兼容android和ios

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

public class MT_Camera : MonoBehaviour
{
    Transform uiRoot;
    Transform camRoot;
    RawImage cam_Video; 
    Toggle tog_togCamera;
    WebCamTexture camTexture;
    public int w_cam = 640;
    public int h_cam = 480;   
      
    private void Awake()
    {
        uiRoot = GameObject.Find("Canvas_UI").transform;
        camRoot = GameObject.Find("Canvas_WebCam").transform;
    }
    private void Start()
    {
        cam_Video = camRoot.Find("raw_Image").GetComponent<RawImage>();
        tog_togCamera = uiRoot.Find("tog_ChangeCam").GetComponent<Toggle>();
        transform.GetComponent<CanvasScaler>().referenceResolution = new  Vector2(Screen.width, Screen.height);
        tog_togCamera.onValueChanged.AddListener(changeCam);
        tog_togCamera.isOn = true;
        ///自适应屏幕分辨率显示摄像头数据
        //宽度不变，缩放高度自适应显示摄像头数据
        //cam_Video.rectTransform.sizeDelta = new Vector2(h_cam * Screen.height / w_cam, Screen.width);
        //宽度不变，缩放宽度自适应显示摄像头数据
        cam_Video.rectTransform.sizeDelta = new Vector2(Screen.height, w_cam * Screen.width / h_cam);
    }
    void changeCam(bool isOn)
    {
        StartCoroutine(CallCamera(isOn));
    }
    IEnumerator CallCamera(bool isOn)
    {
        yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);
        if (Application.HasUserAuthorization(UserAuthorization.WebCam))
        {
            if (camTexture != null)
                camTexture.Stop();         
            WebCamDevice[] cameraDevices = WebCamTexture.devices;         
            string deviceName = "";         
            for (int i = 0; i < cameraDevices.Length; i++)
            {
                //如果是前置摄像机  
                if (WebCamTexture.devices[i].isFrontFacing && isOn)
                {
                    deviceName = WebCamTexture.devices[i].name;
                    TurnCam(isOn);
                    break;
                }
                //如果是后置摄像机  
                else if (!WebCamTexture.devices[i].isFrontFacing && !isOn)
                {
                    deviceName = WebCamTexture.devices[i].name;
                    TurnCam(isOn);
                    break;
                }
            }
            camTexture = new WebCamTexture(deviceName, w_cam, h_cam, 12);
            cam_Video.texture = camTexture;         
            camTexture.Play();
        }
    }
    /// <summary>
    /// 翻转plane,正确显示摄像头数据
    /// </summary>
    /// <param name="isOn">If set to <c>true</c> is turn.</param>
    public void TurnCam(bool isOn)
    {
        #if UNITY_IOS || UNITY_IPHONE
        if (!isOn)
            cam_Video.rectTransform.localEulerAngles = new Vector3(180, 0, 90);
        else cam_Video.rectTransform.localEulerAngles = new Vector3(0, 0, -90);
        #elif UNITY_ANDROID
        if (!isOn)
            cam_Video.rectTransform.localEulerAngles = new Vector3(180, 180, 90);
        else cam_Video.rectTransform.localEulerAngles = new Vector3(0, 180, 90);
        #endif
    }
}

分别发布到xcode和android测试

项目下载链接：https://download.****.net/download/qq_16929759/10421612

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