124 lines
3.1 KiB
JavaScript
124 lines
3.1 KiB
JavaScript
goog.require('ol.Map');
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goog.require('ol.View');
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goog.require('ol.format.GPX');
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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.GPX');
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goog.require('ol.style.Circle');
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goog.require('ol.style.Fill');
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goog.require('ol.style.Stroke');
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goog.require('ol.style.Style');
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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 style = {
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'Point': [new ol.style.Style({
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image: new ol.style.Circle({
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fill: new ol.style.Fill({
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color: 'rgba(255,255,0,0.4)'
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}),
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radius: 5,
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stroke: new ol.style.Stroke({
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color: '#ff0',
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width: 1
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})
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})
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})],
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'LineString': [new ol.style.Style({
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stroke: new ol.style.Stroke({
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color: '#f00',
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width: 3
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})
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})],
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'MultiLineString': [new ol.style.Style({
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stroke: new ol.style.Stroke({
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color: '#0f0',
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width: 3
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})
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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.GPX({
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projection: projection,
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url: 'data/gpx/fells_loop.gpx'
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}),
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style: function(feature, resolution) {
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return style[feature.getGeometry().getType()];
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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: [-7916041.528716288, 5228379.045749711],
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zoom: 12
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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('desc'));
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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.on('pointermove', function(evt) {
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if (evt.dragging) {
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return;
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}
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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 exportGPXElement = document.getElementById('export-gpx');
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if ('download' in exportGPXElement) {
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var vectorSource = vector.getSource();
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exportGPXElement.addEventListener('click', function(e) {
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if (!exportGPXElement.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.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.GPX().writeFeatures(features);
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var base64 = exampleNS.strToBase64(string);
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exportGPXElement.href =
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'data:text/gpx+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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