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map.html
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map.html
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<!DOCTYPE html>
<html>
<head>
<title>Stamen example</title>
<script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="http://openlayers.org/en/v3.9.0/css/ol.css" type="text/css">
<script src="http://openlayers.org/en/v3.9.0/build/ol.js"></script>
</head>
<body>
<div class="container-fluid">
<div class="row-fluid">
<div class="span12">
<div id="map" class="map"></div>
</div>
</div>
</div>
<script>
var getRandomLocation = function (latitude, longitude, radiusInMeters) {
var getRandomCoordinates = function (radius, uniform) {
// Generate two random numbers
var a = Math.random(),
b = Math.random();
// Flip for more uniformity.
if (uniform) {
if (b < a) {
var c = b;
b = a;
a = c;
}
}
// It's all triangles.
return [
b * radius * Math.cos(2 * Math.PI * a / b),
b * radius * Math.sin(2 * Math.PI * a / b)
];
};
var randomCoordinates = getRandomCoordinates(radiusInMeters, true);
// Earths radius in meters via WGS 84 model.
var earth = 6378137;
// Offsets in meters.
var northOffset = randomCoordinates[0],
eastOffset = randomCoordinates[1];
// Offset coordinates in radians.
var offsetLatitude = northOffset / earth,
offsetLongitude = eastOffset / (earth * Math.cos(Math.PI * (latitude / 180)));
// Offset position in decimal degrees.
return [
longitude + (offsetLongitude * (180 / Math.PI)),
latitude + (offsetLatitude * (180 / Math.PI))
]
};
var count = 300;
var features = [];
for (var i = 0; i < count; ++i) {
var coordinates = getRandomLocation(48.775846, 9.182932, 3000);
//ol.proj.fromLonLat([16.3725, 48.208889])
features.push(new ol.Feature(new ol.geom.Point(ol.proj.fromLonLat(coordinates))));
}
var source = new ol.source.Vector({
features: features
});
var clusterSource = new ol.source.Cluster({
distance: 40,
source: source
});
var styleCache = {};
var clusters = new ol.layer.Vector({
source: clusterSource,
style: function(feature, resolution) {
var size = feature.get('features').length;
var style = styleCache[size];
if (!style) {
style = [new ol.style.Style({
image: new ol.style.Circle({
radius: 10,
stroke: new ol.style.Stroke({
color: '#fff'
}),
fill: new ol.style.Fill({
color: '#1abc9c'
})
}),
text: new ol.style.Text({
text: size.toString(),
fill: new ol.style.Fill({
color: '#fff'
})
})
})];
styleCache[size] = style;
}
return style;
}
});
var raster = new ol.layer.Tile({
source: new ol.source.MapQuest({layer: 'sat'})
});
var raw = new ol.layer.Vector({
source: source
});
var map = new ol.Map({
layers: [
new ol.layer.Tile({
source: new ol.source.Stamen({
layer: 'toner'
})
}),
new ol.layer.Tile({
source: new ol.source.Stamen({
layer: 'terrain-labels'
})
}),
clusters
//raster, clusters
],
target: 'map',
view: new ol.View({
center: ol.proj.transform(
[9.182932, 48.775846], 'EPSG:4326', 'EPSG:3857'),
zoom: 13
})
});
</script>
</body>
</html>