89 lines
2.4 KiB
JavaScript
89 lines
2.4 KiB
JavaScript
goog.require('ol.Map');
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goog.require('ol.View');
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goog.require('ol.format.KML');
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goog.require('ol.layer.Tile');
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goog.require('ol.layer.Vector');
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goog.require('ol.proj');
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goog.require('ol.source.BingMaps');
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goog.require('ol.source.KML');
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var projection = ol.proj.get('EPSG:3857');
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var raster = new ol.layer.Tile({
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source: new ol.source.BingMaps({
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imagerySet: 'Aerial',
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key: 'Ak-dzM4wZjSqTlzveKz5u0d4IQ4bRzVI309GxmkgSVr1ewS6iPSrOvOKhA-CJlm3'
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})
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});
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var vector = new ol.layer.Vector({
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source: new ol.source.KML({
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projection: projection,
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url: 'data/kml/2012-02-10.kml'
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})
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});
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var map = new ol.Map({
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layers: [raster, vector],
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target: document.getElementById('map'),
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view: new ol.View({
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center: [876970.8463461736, 5859807.853963373],
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projection: projection,
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zoom: 10
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})
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});
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var displayFeatureInfo = function(pixel) {
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var features = [];
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map.forEachFeatureAtPixel(pixel, function(feature, layer) {
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features.push(feature);
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});
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if (features.length > 0) {
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var info = [];
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var i, ii;
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for (i = 0, ii = features.length; i < ii; ++i) {
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info.push(features[i].get('name'));
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}
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document.getElementById('info').innerHTML = info.join(', ') || '(unknown)';
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map.getTarget().style.cursor = 'pointer';
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} else {
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document.getElementById('info').innerHTML = ' ';
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map.getTarget().style.cursor = '';
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}
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};
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$(map.getViewport()).on('mousemove', function(evt) {
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var pixel = map.getEventPixel(evt.originalEvent);
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displayFeatureInfo(pixel);
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});
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map.on('click', function(evt) {
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displayFeatureInfo(evt.pixel);
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});
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var exportKMLElement = document.getElementById('export-kml');
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if ('download' in exportKMLElement) {
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var vectorSource = vector.getSource();
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exportKMLElement.addEventListener('click', function(e) {
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if (!exportKMLElement.href) {
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var features = [];
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vectorSource.forEachFeature(function(feature) {
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var clone = feature.clone();
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clone.setId(feature.getId()); // clone does not set the id
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clone.getGeometry().transform(projection, 'EPSG:4326');
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features.push(clone);
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});
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var string = new ol.format.KML().writeFeatures(features);
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var base64 = exampleNS.strToBase64(string);
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exportKMLElement.href =
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'data:application/vnd.google-earth.kml+xml;base64,' + base64;
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}
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}, false);
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} else {
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var info = document.getElementById('no-download');
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/**
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* display error message
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*/
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info.style.display = '';
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}
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