75 lines
1.7 KiB
JavaScript
75 lines
1.7 KiB
JavaScript
goog.require('ol.Feature');
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goog.require('ol.Map');
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goog.require('ol.View');
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goog.require('ol.geom.Point');
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goog.require('ol.layer.Vector');
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goog.require('ol.source.Vector');
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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 count = 20000;
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var features = new Array(count);
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var e = 18000000;
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for (var i = 0; i < count; ++i) {
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features[i] = new ol.Feature({
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'geometry': new ol.geom.Point(
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[2 * e * Math.random() - e, 2 * e * Math.random() - e]),
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'i': i,
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'size': 20
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});
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}
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var styles = {
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'10': [new ol.style.Style({
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image: new ol.style.Circle({
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radius: 5,
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fill: new ol.style.Fill({color: '#666666'}),
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stroke: new ol.style.Stroke({color: '#bada55', width: 1})
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})
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})],
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'20': [new ol.style.Style({
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image: new ol.style.Circle({
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radius: 10,
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fill: new ol.style.Fill({color: '#666666'}),
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stroke: new ol.style.Stroke({color: '#bada55', width: 1})
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})
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})]
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};
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var vectorSource = new ol.source.Vector({
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features: features
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});
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var vector = new ol.layer.Vector({
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source: vectorSource,
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style: function(feature, resolution) {
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return styles[feature.get('size')];
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}
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});
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var map = new ol.Map({
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renderer: exampleNS.getRendererFromQueryString(),
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layers: [vector],
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target: document.getElementById('map'),
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view: new ol.View({
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center: [0, 0],
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zoom: 2
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})
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});
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$(map.getViewport()).on('mousemove', function(e) {
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var pixel = map.getEventPixel(e.originalEvent);
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var hit = map.forEachFeatureAtPixel(pixel, function(feature, layer) {
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return true;
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});
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if (hit) {
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map.getTarget().style.cursor = 'pointer';
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} else {
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map.getTarget().style.cursor = '';
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}
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});
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