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Util.js
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264 lines (252 loc) · 8.56 KB
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/* Copyright© 2000 - 2025 SuperMap Software Co.Ltd. All rights reserved.
* This program are made available under the terms of the Apache License, Version 2.0
* which accompanies this distribution and is available at http://www.apache.org/licenses/LICENSE-2.0.html.*/
import "../core/Base";
import mapboxgl from 'mapbox-gl';
import { Bounds } from "@supermapgis/iclient-common/commontypes/Bounds";
import { Point as GeometryPoint } from "@supermapgis/iclient-common/commontypes/geometry/Point";
import { Polygon } from "@supermapgis/iclient-common/commontypes/geometry/Polygon";
import { LinearRing } from "@supermapgis/iclient-common/commontypes/geometry/LinearRing";
import { GeoJSON as GeoJSONFormat } from "@supermapgis/iclient-common/format/GeoJSON";
import { isMatchAdministrativeName } from "@supermapgis/iclient-common/mapping/utils/util";
import { isArray, isString } from "@supermapgis/iclient-common/util/BaseUtil";
/**
* @name Util
* @namespace
* @category BaseTypes Util
* @description 工具类。
* @usage
* ```
* // 浏览器
* <script type="text/javascript" src="{cdn}"></script>
* <script>
* const result = {namespace}.Util.toSuperMapGeometry(geoJSON);
*
* </script>
* // ES6 Import
* import { Util } from '{npm}';
*
* const result = Util.toSuperMapGeometry(geoJSON);
* ```
*/
export const Util = {
/**
* @function Util.toSuperMapGeometry
* @description 将 GeoJSON 对象转为 SuperMap 几何图形。
* @param {GeoJSONObject} geoJSON - GeoJSON 对象。
* @returns {Geometry}
*/
toSuperMapGeometry(geoJSON) {
if (geoJSON && geoJSON.type) {
var format = new GeoJSONFormat();
var result = format.read(geoJSON, "FeatureCollection");
return result && result[0].geometry;
}
},
toSuperMapBounds(bounds) {
if (isArray(bounds)) {
//左下右上
return new Bounds(bounds[0], bounds[1], bounds[2], bounds[3]);
}
if (bounds instanceof mapboxgl.LngLatBounds) {
return new Bounds(bounds.getWest(), bounds.getSouth(), bounds.getEast(), bounds.getNorth());
}
if (bounds instanceof Bounds) {
return bounds;
}
return bounds;
},
toSuperMapPoint(lnglat) {
//客户端可传入 geojson 对象 或者 mapboxgl lnglat 点对象,或者是点数组
if (isArray(lnglat)) {
return new GeometryPoint(lnglat[0], lnglat[1]);
} else if (lnglat.lng && lnglat.lat) {
return new GeometryPoint(lnglat.lng, lnglat.lat);
}
return new GeometryPoint(lnglat.geometry.coordinates[0], lnglat.geometry.coordinates[1]);
},
/**
* @function Util.toSuperMapPolygon
* @description 将 Mapbox GL LngLatbounds 对象转为 SuperMap 几何图形。
* @param {mapboxgl.LngLatBounds} lnglatBounds - Mapbox GL LngLatbounds对象。
* @returns {GeometryPolygon}
*/
toSuperMapPolygon(lnglatBounds) {
const west = lnglatBounds.getWest();
const east = lnglatBounds.getEast();
const sourth = lnglatBounds.getSouth();
const north = lnglatBounds.getNorth();
return new Polygon([
new LinearRing([
new GeometryPoint(west, sourth),
new GeometryPoint(east, sourth),
new GeometryPoint(east, north),
new GeometryPoint(west, north)
])
]);
},
/**
* @function Util.isArray
* @description 判断是否为数组格式。
* @param {Object} obj - 待判断对象。
* @returns {boolean} 是否是数组。
*/
isArray,
/**
* @function Util.toGeoJSON
* @description 将传入对象转为 GeoJSON 格式。
* @param {Object} smObj - 待转对象。
*/
toGeoJSON(smObj) {
if (smObj) {
var format = new GeoJSONFormat();
return format.toGeoJSON(smObj);
}
},
/**
* @function Util.toProcessingParam
* @description 将 Region 节点数组转为 Processing 服务需要的分析参数。
* @param {Array} points - Region 各个节点数组。
* @returns {Object} processing 服务裁剪、查询分析的分析参数。
*/
toProcessingParam(points) {
var geometryParam = {};
if (points.length < 1) {
geometryParam = "";
} else {
var results = [];
for (var i = 0; i < points.length; i++) {
var point = {};
point.x = points[i][0];
point.y = points[i][1];
results.push(point);
}
geometryParam.type = "REGION";
geometryParam.points = results;
}
return geometryParam;
},
/**
* @function Util.extend
* @description 对象拷贝赋值。
* @param {Object} dest - 目标对象。
* @param {Object} arguments - 待拷贝的对象。
* @returns {Object} 赋值后的目标对象。
*/
extend(dest) {
for (var index = 0; index < Object.getOwnPropertyNames(arguments).length; index++) {
var arg = Object.getOwnPropertyNames(arguments)[index];
if (arg == "caller" || arg == "callee" || arg == "length" || arg == "arguments") {
continue;
}
var obj = arguments[arg];
if (obj) {
for (var j = 0; j < Object.getOwnPropertyNames(obj).length; j++) {
var key = Object.getOwnPropertyNames(obj)[j];
if (arg == "caller" || arg == "callee" || arg == "length" || arg == "arguments") {
continue;
}
dest[key] = obj[key];
}
}
}
return dest;
},
/**
* 检测数据是否为number
* @param value 值，未知数据类型
* @returns {boolean}
*/
isNumber(value) {
if (value === "") {
return false;
}
let mdata = Number(value);
if (mdata === 0) {
return true;
}
return !isNaN(mdata);
},
isString,
/**
* 随机生成id
* @param attr
* @returns {string}
*/
newGuid(attr) {
let len = attr || 32;
let guid = "";
for (let i = 1; i < len; i++) {
let n = Math.floor(Math.random() * 16.0).toString(16);
guid += n;
}
return guid;
},
/**
* @description 十六进制转 RGBA 格式。
* @param {Object} hex - 十六进制格式。
* @param {number} opacity - 不透明度Alpha。
* @returns {string} 生成的 RGBA 格式。
*/
hexToRgba(hex, opacity) {
var color = [],
rgba = [];
hex = hex.replace(/#/, "");
if (hex.length == 3) {
var tmp = [];
for (let i = 0; i < 3; i++) {
tmp.push(hex.charAt(i) + hex.charAt(i));
}
hex = tmp.join("");
}
for (let i = 0; i < 6; i += 2) {
color[i] = "0x" + hex.substr(i, 2);
rgba.push(parseInt(Number(color[i])));
}
rgba.push(opacity);
return "rgba(" + rgba.join(",") + ")";
},
/**
* @param {string} featureName 原始数据中的地名
* @param {string} fieldName 待匹配的地名
* @returns {boolean} 是否匹配
*/
isMatchAdministrativeName,
/**
* @description 墨卡托转经纬度。
* @param {Array} point - 待转换的点。
* @returns {Object} 经纬度坐标。
*/
unproject(point) {
var d = 180 / Math.PI,
r = 6378137,
ts = Math.exp(-point[1] / r),
phi = Math.PI / 2 - 2 * Math.atan(ts);
for (var i = 0, dphi = 0.1, con; i < 15 && Math.abs(dphi) > 1e-7; i++) {
con = 1;
dphi = Math.PI / 2 - 2 * Math.atan(ts * con) - phi;
phi += dphi;
}
return new mapboxgl.LngLat((point[0] * d) / r, phi * d);
},
/**
* @description url 拼接代理或者凭证信息
* @param {string} point - 待转换的 url
* @returns {string} 转换后的 url
*/
transformUrl({ url, server, excludePortalProxyUrl, credentialValue, credentialKey }) {
let mapUrl = url.indexOf('.json') === -1 ? `${url}.json` : url;
let filter = 'getUrlResource.json?url=';
if (excludePortalProxyUrl && server.indexOf(filter) > -1) {
//大屏需求,或者有加上代理的
let urlArray = server.split(filter);
if (urlArray.length > 1) {
mapUrl = urlArray[0] + filter + mapUrl;
}
}
if (credentialValue && credentialKey) {
mapUrl += '?' + credentialKey + '=' + credentialValue;
}
return mapUrl;
}
}