openlayers
Version:
Build tools and sources for developing OpenLayers based mapping applications
51 lines (47 loc) • 1.27 kB
JavaScript
goog.require('ol.Map');
goog.require('ol.View');
goog.require('ol.layer.Tile');
goog.require('ol.source.BingMaps');
var styles = [
'Road',
'RoadOnDemand',
'Aerial',
'AerialWithLabels',
'collinsBart',
'ordnanceSurvey'
];
var layers = [];
var i, ii;
for (i = 0, ii = styles.length; i < ii; ++i) {
layers.push(new ol.layer.Tile({
visible: false,
preload: Infinity,
source: new ol.source.BingMaps({
key: 'As1HiMj1PvLPlqc_gtM7AqZfBL8ZL3VrjaS3zIb22Uvb9WKhuJObROC-qUpa81U5',
imagerySet: styles[i]
// use maxZoom 19 to see stretched tiles instead of the BingMaps
// "no photos at this zoom level" tiles
// maxZoom: 19
})
}));
}
var map = new ol.Map({
layers: layers,
// Improve user experience by loading tiles while dragging/zooming. Will make
// zooming choppy on mobile or slow devices.
loadTilesWhileInteracting: true,
target: 'map',
view: new ol.View({
center: [-6655.5402445057125, 6709968.258934638],
zoom: 13
})
});
var select = document.getElementById('layer-select');
function onChange() {
var style = select.value;
for (var i = 0, ii = layers.length; i < ii; ++i) {
layers[i].setVisible(styles[i] === style);
}
}
select.addEventListener('change', onChange);
onChange();