Unity调用手机摄像机识别二维码

本文实现Unity调用手机摄像，拍摄，然后识别二维码，显示二维码的内容。

需要导入一个zxing.unity.dll文件,现在这个脚本的识别数据是放在Updata里边扫描的 数据量特别大会卡  要是用的话就自己做一下一秒执行一次。我这里没有弄

下载地址：zxing.unity.dll

代码：

using System.Threading;
using UnityEngine;
using ZXing;

public class WebCameraScript : MonoBehaviour
{
public string LastResult;
public string Lastresult;
public Color32[] data;
private bool isQuit;

public GUITexture myCameraTexture;
private WebCamTexture webCameraTexture;

private void Start()
{
// bool success = CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);
// Checks how many and which cameras are available on the device
for (int cameraIndex = 0; cameraIndex < WebCamTexture.devices.Length; cameraIndex++)
{
 // We want the back camera
 if (!WebCamTexture.devices[cameraIndex].isFrontFacing)
 {
 //webCameraTexture = new WebCamTexture(cameraIndex, Screen.width, Screen.height);
 webCameraTexture = new WebCamTexture(cameraIndex, 200, 200);

// Here we flip the GuiTexture by applying a localScale transformation
 // works only in Landscape mode
 myCameraTexture.transform.localScale = new Vector3(1, 1, 1);
 }
}

// Here we tell that the texture of coming from the camera should be applied
// to our GUITexture. As we have flipped it before the camera preview will have the
// correct orientation
myCameraTexture.texture = webCameraTexture;
// Starts the camera
webCameraTexture.Play();
//enabled=WebCamTexture.s
}

public void ShowCamera()
{
myCameraTexture.guiTexture.enabled = true;
webCameraTexture.Play();
}

public void HideCamera()
{
myCameraTexture.guiTexture.enabled = false;
webCameraTexture.Stop();
}

private void OnGUI()
{
GUI.Label(new Rect(60, 30*1, Screen.width, 20), "LastResult:" + LastResult);
if (GUI.Button(new Rect(0, 0, 100, 100), "ON/OFF"))
{
 if (webCameraTexture.isPlaying)
 HideCamera();
 else
 ShowCamera();
}
}

private void Update()
{
//data = new Color32[webCameraTexture.width * webCameraTexture.height];
data = webCameraTexture.GetPixels32();

DecodeQR(webCameraTexture.width, webCameraTexture.height);
}

private void DecodeQR(int W, int H)
{
if (isQuit)
 return;
// create a reader with a custom luminance source
var barcodeReader = new BarcodeReader {AutoRotate = true, TryHarder = true};

// while (true)
{
 try
 {
 // decode the current frame
 Result result = barcodeReader.Decode(data, W, H);
 if (result != null)
 {
  LastResult = result.Text;
  // shouldEncodeNow = true;
  print("i read out::" + result.Text);
 }

// Sleep a little bit and set the signal to get the next frame
 Thread.Sleep(200);
 data = null;
 }
 catch
 {
 }
}
}
}

来源：https://blog.csdn.net/chh19941125/article/details/45953725