效果
只显示范围内的天地图,其余部分透明化
实现
复制后直接运行即可
<!DOCTYPE html>
<html lang="zn"><head><meta charset="UTF-8" /><meta http-equiv="X-UA-Compatible" content="IE=edge" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>arcgis for js只显示范围内的天地图</title><style>html,body {width: 100%;height: 100%;background: #000;}* {margin: 0;padding: 0;}body {background: linear-gradient(135deg, rgba(16, 101, 91, 1) 0%, rgba(16, 101, 91, 0.2) 100%);}#mapView {position: absolute;width: 100%;height: 100%;}</style><link rel="stylesheet" href="https://js.arcgis.com/4.23/esri/themes/light/main.css" /><script src="https://js.arcgis.com/4.23/"></script></head><body><div id="mapView"></div><script>require(['esri/Map','esri/views/MapView','esri/Basemap','esri/layers/WebTileLayer','esri/layers/GroupLayer','esri/layers/GeoJSONLayer'], function (Map, MapView, Basemap, WebTileLayer, GroupLayer, GeoJSONLayer) {var tiandituBaseUrl = 'http://{subDomain}.tianditu.gov.cn' // 天地图服务地址var token = 'b5a612fc171599a0f5c51aa03efd4948' // 我个人的天地图token, 地图加载不出来的话就换成自己的// 天地图底图var imgLayer = new WebTileLayer({urlTemplate:tiandituBaseUrl + '/DataServer?T=img_w/wmts&x={col}&y={row}&l={level}&tk=' + token,subDomains: ['t0', 't1', 't2', 't3', 't4', 't5', 't6', 't7'],copyright: '天地图影像图'})var ciaLayer = new WebTileLayer({urlTemplate:tiandituBaseUrl +'/DataServer?T=cia_w?T=vec_c/wmts&x={col}&y={row}&l={level}&tk=' +token,subDomains: ['t0', 't1', 't2', 't3', 't4', 't5', 't6', 't7'],copyright: '天地图影像注记'})var vecBasemap = new Basemap({baseLayers: [imgLayer, ciaLayer],title: '影像图',id: 'img_w',thumbnailUrl:'https://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/tile/0/0/0'})// 初始化底图window.map = new Map({basemap: vecBasemap // 指定一个底图// basemap: 'dark-gray-vector'})// 创建2维视图let view = new MapView({container: 'mapView',map: map,zoom: 9, // 初始化级别center: [103.97992123657217, 30.680738016500914] // 初始化中心点坐标})// 添加点击view.on('click', function (e) {console.log('>>> 点击的坐标: ')console.log(`${e.mapPoint.longitude}, ${e.mapPoint.latitude}`)})view.when(() => {// 背景颜色在CSS中设置// 去除原本底图map.basemap = null// 天地图蒙层const maskLayer = new GroupLayer({layers: [imgLayer,ciaLayer,new GeoJSONLayer({url: 'https://geo.datav.aliyun.com/areas_v3/bound/510100.json',blendMode: 'destination-in',outFields: ['*'],renderer: {type: 'simple',symbol: {type: 'simple-fill',color: [227, 139, 79, 1],outline: {color: [0, 122, 204, 0.8],width: 2}}}})]})map.add(maskLayer)// 边界线const boundaryLineLayer = new GeoJSONLayer({url: 'https://geo.datav.aliyun.com/areas_v3/bound/510100.json',outFields: ['*'],renderer: {type: 'simple',symbol: {type: 'simple-line',color: '#B1E4B1',width: 2}}})map.add(boundaryLineLayer, 10)})})</script></body>
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