Unity结合ZXing生成中间带图标的二维码并保存

来源：互联网发布：大数据信息存储机制编辑：程序博客网时间：2024/06/03 08:47
1、环境

Win10
Unity3d 2017.1.0f3
ZXing.Net ZXing.Net.0.16.0.0
下载：http://zxingnet.codeplex.com/
2、效果截图

这里写图片描述
3、代码

using System.Collections.Generic;using UnityEngine;using UnityEngine.UI;using ZXing;using ZXing.Common;public class Demo : MonoBehaviour {    public RawImage img1;    public RawImage img2;    public RawImage img3;    public Texture2D icon;    // Use this for initialization    void Start ()    {        GenerateQRImage1("Hello Wrold!", 256, 256);        GenerateQRImage2("I Love You!", 256, 256);        GenerateQRImage3("中间带图片的二维码图片", 256, 256, icon);    }    /// <summary>    /// 生成2维码 方法一    /// 经测试：只能生成256x256的    /// </summary>    /// <param name="content"></param>    /// <param name="width"></param>    /// <param name="height"></param>    void GenerateQRImage1(string content, int width, int height)    {        // 编码成color32        EncodingOptions options = null;        BarcodeWriter writer = new BarcodeWriter();        options = new EncodingOptions        {            Width = width,            Height = height,            Margin = 1,        };        options.Hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");        writer.Format = BarcodeFormat.QR_CODE;        writer.Options = options;        Color32[] colors = writer.Write(content);        // 转成texture2d        Texture2D texture = new Texture2D(width, height);        texture.SetPixels32(colors);        texture.Apply();        img1.texture = texture;        //// 存储成文件        //byte[] bytes = texture.EncodeToPNG();        //string path = System.IO.Path.Combine(Application.dataPath, "qr.png");        //System.IO.File.WriteAllBytes(path, bytes);    }    /// <summary>    /// 生成2维码 方法二    /// 经测试：能生成任意尺寸的正方形    /// </summary>    /// <param name="content"></param>    /// <param name="width"></param>    /// <param name="height"></param>    void GenerateQRImage2(string content, int width, int height)    {        // 编码成color32        MultiFormatWriter writer = new MultiFormatWriter();        Dictionary<EncodeHintType, object> hints = new Dictionary<EncodeHintType, object>();        hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");        hints.Add(EncodeHintType.MARGIN, 1);        hints.Add(EncodeHintType.ERROR_CORRECTION, ZXing.QrCode.Internal.ErrorCorrectionLevel.M);        BitMatrix bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);        // 转成texture2d        int w = bitMatrix.Width;        int h = bitMatrix.Height;        print(string.Format("w={0},h={1}", w, h));        Texture2D texture = new Texture2D(w, h);        for (int x=0; x<h; x++)        {            for(int y=0; y<w; y++)            {                if(bitMatrix[x,y])                {                    texture.SetPixel(y, x, Color.red);                }                else                {                    texture.SetPixel(y, x, Color.white);                }            }        }        texture.Apply();        img2.texture = texture;        //// 存储成文件        //byte[] bytes = texture.EncodeToPNG();        //string path = System.IO.Path.Combine(Application.dataPath, "qr.png");        //System.IO.File.WriteAllBytes(path, bytes);    }    /// <summary>    /// 生成2维码 方法三    /// 在方法二的基础上，添加小图标    /// </summary>    /// <param name="content"></param>    /// <param name="width"></param>    /// <param name="height"></param>    void GenerateQRImage3(string content, int width, int height, Texture2D centerIcon)    {        // 编码成color32        MultiFormatWriter writer = new MultiFormatWriter();        Dictionary<EncodeHintType, object> hints = new Dictionary<EncodeHintType, object>();        hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");        hints.Add(EncodeHintType.MARGIN, 1);        hints.Add(EncodeHintType.ERROR_CORRECTION, ZXing.QrCode.Internal.ErrorCorrectionLevel.H);        BitMatrix bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);        // 转成texture2d        int w = bitMatrix.Width;        int h = bitMatrix.Height;        Texture2D texture = new Texture2D(w, h);        for (int x = 0; x < h; x++)        {            for (int y = 0; y < w; y++)            {                if (bitMatrix[x, y])                {                    texture.SetPixel(y, x, Color.blue);                }                else                {                    texture.SetPixel(y, x, Color.white);                }            }        }        // 添加小图        int halfWidth = texture.width / 2;        int halfHeight = texture.height / 2;        int halfWidthOfIcon = centerIcon.width / 2;        int halfHeightOfIcon = centerIcon.height / 2;        int centerOffsetX = 0;        int centerOffsetY = 0;        for (int x = 0; x < h; x++)        {            for (int y = 0; y < w; y++)            {                centerOffsetX = x - halfWidth;                centerOffsetY = y - halfHeight;                if(Mathf.Abs(centerOffsetX) <= halfWidthOfIcon && Mathf.Abs(centerOffsetY) <= halfHeightOfIcon)                {                    texture.SetPixel(x, y, centerIcon.GetPixel(centerOffsetX + halfWidthOfIcon, centerOffsetY + halfHeightOfIcon));                }            }        }        texture.Apply();        img3.texture = texture;        // 存储成文件        byte[] bytes = texture.EncodeToPNG();        string path = System.IO.Path.Combine(Application.dataPath, "qr.png");        System.IO.File.WriteAllBytes(path, bytes);    }}
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