108 lines
2.8 KiB
C#
108 lines
2.8 KiB
C#
using System;
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using System.Linq;
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using System.Collections;
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using System.Collections.Generic;
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using ZXing;
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using UnityEngine;
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using UnityEngine.UI;
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public class QRCodeReader : MonoBehaviour
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{
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public static QRCodeReader Instance { get; private set; }
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public event Action<string> OnQRCodeRead;
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[SerializeField] AspectRatioFitter aspectRatioFitter;
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public RawImage rawImage;
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public GameObject scanFrame;
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public WebCamTexture camTexture;
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private Coroutine c_QRScanningRoutine;
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void Start()
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{
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Instance = this;
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int backCameraId = 0;
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bool backCameraEnabled = false;
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List<int> backCameraIDs = new List<int>();
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WebCamDevice[] devices = WebCamTexture.devices;
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if(devices.Length != 0)
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{
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for(int i = 0; i < devices.Length; i++)
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{
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if(Application.platform == RuntimePlatform.Android && !devices[i].isFrontFacing)
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{
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backCameraEnabled = true;
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backCameraIDs.Add(i);
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}
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else
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{
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backCameraEnabled = true;
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backCameraId = 0;
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}
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}
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if(backCameraIDs.Count != 0)
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backCameraId = backCameraIDs.First();
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}
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if(!backCameraEnabled) return;
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camTexture = new WebCamTexture(devices[backCameraId].name);
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rawImage.texture = camTexture;
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camTexture.Play();
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int orientation = -camTexture.videoRotationAngle;
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rawImage.rectTransform.localEulerAngles = Vector3.forward * orientation;
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var ratio = (float)camTexture.width / (float)camTexture.height;
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aspectRatioFitter.aspectRatio = ratio;
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float scaleY = camTexture.videoVerticallyMirrored ? -1f : 1f;
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rawImage.rectTransform.localScale = new Vector3(1f, scaleY, 1f);
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ScanningQRCode();
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}
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public void ScanningQRCode()
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{
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if(c_QRScanningRoutine != null)
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{
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StopCoroutine(c_QRScanningRoutine);
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c_QRScanningRoutine = null;
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}
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c_QRScanningRoutine = StartCoroutine(ScanQRCode());
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}
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IEnumerator ScanQRCode()
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{
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Result result;
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while(true)
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{
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try
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{
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IBarcodeReader barcodeReader = new BarcodeReader();
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result = barcodeReader.Decode
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(
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camTexture.GetPixels32(),
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camTexture.width,
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camTexture.height
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);
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if(result != null) break;
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}
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catch { }
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yield return new WaitForSeconds(.5f);
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}
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yield return new WaitForSeconds(1);
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OnQRCodeRead?.Invoke(result.Text);
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}
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} |