web_sh_audit/src/utils/publicFunction.js

/**
 * 公共函数库
 */
import CryptoJS from "crypto-js";

const key = CryptoJS.enc.Utf8.parse("1234123412ABCDEF"); //十六位十六进制数作为密钥
const iv = CryptoJS.enc.Utf8.parse("ABCDEF1234123412"); //十六位十六进制数作为密钥偏移量

/* 加密 */
const Encrypt = (word) => {
  let srcs = CryptoJS.enc.Utf8.parse(word);
  let encrypted = CryptoJS.AES.encrypt(srcs, key, {
    iv: iv,
    mode: CryptoJS.mode.CBC,
    padding: CryptoJS.pad.Pkcs7,
  });
  return encrypted.ciphertext.toString().toUpperCase();
};
/* 解密 - PRIVATE_KEY - 验证 */
const Decrypt = (word) => {
  let encryptedHexStr = CryptoJS.enc.Hex.parse(word);
  let srcs = CryptoJS.enc.Base64.stringify(encryptedHexStr);
  let decrypt = CryptoJS.AES.decrypt(srcs, key, {
    iv: iv,
    mode: CryptoJS.mode.CBC,
    padding: CryptoJS.pad.Pkcs7,
  });
  let decryptedStr = decrypt.toString(CryptoJS.enc.Utf8);
  return decryptedStr.toString();
};
//随机id生成
const buildGuid = function (options) {
  var text = "";
  var mar = options || "default";
  var possible =
    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
  for (var i = 0; i < 18; i++)
    text += possible.charAt(Math.floor(Math.random() * possible.length));
  return mar + "_" + new Date().getTime().toString() + text;
};

/**
 * 根据数组属性排序
 */
const compare = function (property) {
  //property:根据什么属性排序
  return function (a, b) {
    var value1 = a[property];
    var value2 = b[property];
    /*
     * value2 - value1; ——> 降序
     * value1 - value2; ——> 升序
     */
    return value1 - value2; //升序排序
  };
};

/**
 * 获取随机颜色
 */
const getRandomColor = function () {
  let rgb = [];

  for (let i = 0; i < 3; ++i) {
    let color = Math.floor(Math.random() * 256).toString(16);

    color = color.length == 1 ? "0" + color : color;

    rgb.push(color);
  }

  return "#" + rgb.join("");
};

/**
 * 生成随机色
 * rootNumber 色彩基数 默认200
 * colorsNumber 跳跃基数 默认16
 * forLength 避免死循环（限制迭代次数）
 */
const getRGBColor = (rootNumber, colorsNumber) => {
  // if (forLength < 10) {
  // forLength++;
  // 色彩基数
  let _rootNumber = 0;
  // 跳跃基数
  let _colorsNumber = 50;
  // rgb格式定义
  let rgbColor = [0, 150, 0];
  let rgbColorStr = "rgb(";
  if (rootNumber) {
    _rootNumber = rootNumber;
  }
  if (colorsNumber) {
    _colorsNumber = colorsNumber;
  }
  rgbColor.forEach((item, index) => {
    if (index === 0) {
      rgbColorStr +=
        _rootNumber + item + 
        Math.round((Math.random() * (255 - _rootNumber - item)) / _colorsNumber) *
          _colorsNumber;
    } else {
      let rgbColor =
        _rootNumber + item + 
        Math.round((Math.random() * (255 - _rootNumber - item)) / _colorsNumber) *
          _colorsNumber;
      rgbColorStr += "," + rgbColor;
    }
  });
  rgbColorStr += ")";
  return rgbColorStr;
  // 去重
  // if (this.rgbColorList.indexOf(rgbColorStr) >= 0) {
  //   this.getRGBColor(rootNumber, colorsNumber, forLength);
  // } else {
  //   this.rgbColorList.push(rgbColorStr);
  // }
  // } else {
  //   this.$message.info("getColors 请重试!");
  // }
};

/**
 * 获取geoJSON格式的数据 -- 目前仅供标记疑点相关内容使用(圆也存为面);
 *
 * 类型: 0 点；1 线；2 面；3 矩形；4 圆形；5 其他；
 */
const generateGeoJSON = (title, desc, featureType, coords, geoName) => {
  let dataType = "LineString";
  let propertiesType = "面";
  switch (featureType) {
    case 0:
      dataType = "Point";
      propertiesType = "点";
      break;
    case 1:
      dataType = "LineString";
      propertiesType = "线";
      break;
    case 2:
      dataType = "Polygon";
      propertiesType = "面";
      break;
    case 4:
      dataType = "Polygon";
      propertiesType = "圆";
  }
  let data = {
    type: "Feature",
    properties: {
      title: title || "",
      desc: desc || "",
      featureType: propertiesType,
      featureTypeIndex: featureType,
      name: geoName,
    },
    geometry: {
      coordinates: coords,
      // coordinates: [[
      //   [114.1199232448792, 35.33694447387694],
      //   [113.75754748638985, 31.716871012257627],
      //   [109.28122464218609, 32.06198896315057],
      //   [109.70940919390267, 34.543087977545525],
      // ]],
      type: dataType,
    },
  };
  return data;
};

/**
 * 供Leaflet直接读取Geojson数据的标准数据格式；
 * @coordinates 坐标，格式要求 [[ [lng1, lat1],[lng2, lat2]]]
 * @type 用于何种应用场景，如 overlayAnalysis
 *
 * 应用于叠置分析
 */
const standardGeojson = (coordinates, properties) => {
  let data = {
    type: "Feature",
    properties: properties,
    geometry: {
      type: "Polygon",
      coordinates: coordinates,
    },
  };
  return data;
};

/**
 * 转化为树结构
 * @param {*} params
 * @param {*} arr
 * @param {*} depth
 * @returns
 */
let convertTree = (params, arr, depth = 0) => {
  if (arr.length == 0 || depth >= params.length) return arr;
  let res = [];
  let v = params[depth];
  let map = group(arr, v.field);
  map.forEach((val, key) => {
    // 生成当前层的节点
    let o = v.obj(val[0]);
    // 生成所有的子节点
    let child = val.map((cv) => v.child(cv));
    o.child = child;
    // 递归生成
    if (child.length > 0) {
      o.child = convertTree(params, child, depth + 1);
      if (depth + 1 === params.length) {
        delete o.child;
      }
    }
    res.push(o);
  });
  return res;
};

/**
 * 根据字段分类
 * @param {*} arr
 * @param {*} field
 * @returns
 */
let group = (arr, field) => {
  let map = new Map();
  arr.forEach((v) => {
    // 没有的话就创建一个新数组
    if (!map.has(v[field])) {
      map.set(v[field], [v]);
      return;
    }
    // 放入同类中
    map.get(v[field]).push(v);
  });
  return map;
};
/**
 * 多维数组偏移调整
 */
let latLngsCorrection = (latlngsAry)=>{
   // 深拷贝
   var tempLatlngsAry = JSON.parse(JSON.stringify(latlngsAry));
   if (typeof tempLatlngsAry[0] === "number") {
     if (tempLatlngsAry.length < 3 && tempLatlngsAry.length > 0) {
      // systemConfig.lonCorrectParams -- 经度偏移校正值
      tempLatlngsAry[0]-= systemConfig.lonCorrectParams
      tempLatlngsAry[1]-=systemConfig.latCorrectParams
       return tempLatlngsAry;
     }
     if (tempLatlngsAry.length === 3) {
      tempLatlngsAry[0]-= systemConfig.lonCorrectParams
      tempLatlngsAry[1]-=systemConfig.latCorrectParams
       return tempLatlngsAry;
     }
   } else {
     for (var i = 0, l = tempLatlngsAry.length; i < l; i++) {
       tempLatlngsAry[i] = latLngsCorrection(tempLatlngsAry[i]);
     }
   }
   return tempLatlngsAry;
}

/**
 * 多维数组转置
 */
let latLngsToReverse = (latlngsAry) => {
  // 深拷贝
  var tempLatlngsAry = JSON.parse(JSON.stringify(latlngsAry));
  if (typeof tempLatlngsAry[0] === "number") {
    if (tempLatlngsAry.length < 3 && tempLatlngsAry.length > 0) {
      return tempLatlngsAry.reverse();
    }
    if (tempLatlngsAry.length === 3) {
      tempLatlngsAry = tempLatlngsAry.slice(0, 2);
      return tempLatlngsAry.reverse();
    }
  } else {
    for (var i = 0, l = tempLatlngsAry.length; i < l; i++) {
      tempLatlngsAry[i] = latLngsToReverse(tempLatlngsAry[i]);
    }
  }
  return tempLatlngsAry;
};

export default {
  buildGuid,
  compare,
  getRandomColor,
  Encrypt,
  Decrypt,
  generateGeoJSON,
  standardGeojson,
  convertTree,
  latLngsCorrection,
  latLngsToReverse,
  getRGBColor,
};