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KML?OpenLayers????

???????????KML?????OpenLayers????3D????????

1. ?????????

???????????????KML?????????????????file-saver??

npm install file-saver --save

???????????????file-saver???KML???

2. ??OpenLayers????

?OpenLayers????????????????????????????

import ol from 'openlayers';
import FileSaver from 'file-saver';

????????????OpenLayers?file-saver?????

3. ??KML????3D????

??OpenLayers?KML?????????3D???????????????????

const map = new ol.Map({
  target: 'map-container',
  layers: [],
  view: new ol.View({
    center: ol.proj.fromLonLat([0, 0]),
    zoom: 2
  })
});
// ??KML???
function loadKML(file) {
  const kmlLayer = new ol.layer.KML({
    source: file,
    projection: 'EPSG:3857'
  });
  map.addLayer(kmlLayer);
}

???????????KML?????OpenLayers????????

4. ?????????

?????????????????

??????????????KML?OpenLayers??3D??????????????????????????

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