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Bing Maps

bing2 bing-maps1

Example of a Bing Maps layer.

对于给定的分辨率(resolution)和地区,如果 Bing 地图服务没有这些瓦片,那么将会返回占位瓦片(应该是默认图片)。 放大地图超过19级能够看到占位瓦片。如果你想在地图超过19级的时候,显示最后一级拉伸的瓦片而不是占位瓦片, 那么在创建 ol/source/BingMaps 的时候将 maxZoom 设置为 19 即可。

main.js
import BingMaps from 'ol/source/BingMaps.js';
import Map from 'ol/Map.js';
import TileLayer from 'ol/layer/Tile.js';
import View from 'ol/View.js';

const styles = [
  'RoadOnDemand',
  'Aerial',
  'AerialWithLabelsOnDemand',
  'CanvasDark',
  'OrdnanceSurvey',
];
const layers = [];
let i, ii;
for (i = 0, ii = styles.length; i < ii; ++i) {
  layers.push(
    new TileLayer({
      visible: false,
      preload: Infinity,
      source: new BingMaps({
        key: 'Your Bing Maps Key from https://www.bingmapsportal.com/ here',
        imagerySet: styles[i],
        // use maxZoom 19 to see stretched tiles instead of the BingMaps
        // "no photos at this zoom level" tiles
        // maxZoom: 19
      }),
    })
  );
}
const map = new Map({
  layers: layers,
  target: 'map',
  view: new View({
    center: [-6655.5402445057125, 6709968.258934638],
    zoom: 13,
  }),
});

const select = document.getElementById('layer-select');
function onChange() {
  const style = select.value;
  for (let i = 0, ii = layers.length; i < ii; ++i) {
    layers[i].setVisible(styles[i] === style);
  }
}
select.addEventListener('change', onChange);
onChange();
index.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>Bing Maps</title>
    <link rel="stylesheet" href="node_modules/ol/ol.css">
    <style>
      .map {
        width: 100%;
        height: 400px;
      }
    </style>
  </head>
  <body>
     <div id="map" class="map"></div>
     <select id="layer-select">
       <option value="Aerial">Aerial</option>
       <option value="AerialWithLabelsOnDemand" selected>Aerial with labels</option>
       <option value="RoadOnDemand">Road</option>
       <option value="CanvasDark">Road dark</option>
       <option value="OrdnanceSurvey">Ordnance Survey</option>
     </select>
    <!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
    <script src="./resources/elm-pep.js"></script>
    <script type="module" src="main.js"></script>
  </body>
</html>
package.json
{
  "name": "bing-maps",
  "dependencies": {
    "ol": "7.3.0"
  },
  "devDependencies": {
    "vite": "^3.2.3"
  },
  "scripts": {
    "start": "vite",
    "build": "vite build"
  }
}