82 lines
1.9 KiB
JavaScript
82 lines
1.9 KiB
JavaScript
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'use strict'
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import * as turf from '@turf/turf';
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import { deepClone } from '@/common/custom.js'
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/*
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中国边界数据 来源 阿里-高德
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https://datav.aliyun.com/portal/school/atlas/area_selector
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*/
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import chinaBoundary from './china-boundary.json';
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/*
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XDGeoSdk
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*/
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class XDGeoSdk {
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geoJson = null;
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geoSimpleJson = null;
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chinaPolygon = null;
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chinaAreaBoundary = null;
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chinaAreaMainLandBoundary = null;
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chinaBox = null;
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static instance = null;
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constructor() {
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this.instance = null
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this.geoJson=chinaBoundary;
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this.chinaAreaBoundary=deepClone(chinaBoundary.features[0].geometry.coordinates);
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this.chinaAreaMainLandBoundary=this.chinaAreaBoundary[0][0];
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this.chinaPolygon = chinaBoundary.features[0].geometry;
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this.chinaBox=turf.bbox(this.chinaPolygon);
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var options = {tolerance: 0.01, highQuality: false};
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this.geoSimpleJson = turf.simplify(this.geoJson, options);
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// console.log("===>this.chinaPolygon==>",this.chinaPolygon);
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// console.log("===>geoSimpleJson==>",this.geoSimpleJson);
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}
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static getInstance() {
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if (!this.instance) {
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this.instance = new XDGeoSdk()
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}
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return this.instance
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}
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getChinaGeoJson(){
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return this.geoJson;
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// return this.geoSimpleJson;
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}
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getChinaPolygon(){
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return this.chinaAreaBoundary;
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}
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getChinaMainLandPolygon(){
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return this.chinaAreaMainLandBoundary;
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}
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isInChina(lat,lng) {
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// [minLng, minLat, maxLng, maxLat]
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const bbox = this.chinaBox;
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const isInBbox = lng >= bbox[0] && lng <= bbox[2] && lat >= bbox[1] && lat <= bbox[3];
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if (!isInBbox) {
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return false;
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}
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const point = turf.point([lng, lat]);
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const chinaPolygon = this.chinaPolygon;
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let rst=turf.booleanPointInPolygon(point, chinaPolygon);
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return rst;
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}
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}
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export default XDGeoSdk;
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