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',
})
]
})
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>
</html>