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<!DOCTYPE html>
< html >
< head >
< title > Leaflet debug page< / title >
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< link rel = "stylesheet" href = "http://cdn.leafletjs.com/leaflet-0.7/leaflet.css" / >
< script src = "http://cdn.leafletjs.com/leaflet-0.7/leaflet-src.js" > < / script >
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< meta name = "viewport" content = "width=device-width, initial-scale=1.0" >
< link rel = "stylesheet" href = "../screen.css" / >
< link rel = "stylesheet" href = "../../dist/MarkerCluster.css" / >
< link rel = "stylesheet" href = "../../dist/MarkerCluster.Default.css" / >
< script src = "../../src/DistanceGrid.js" > < / script >
< script src = "../../src/MarkerCluster.js" > < / script >
< script src = "../../src/MarkerClusterGroup.js" > < / script >
< script src = "../../src/MarkerCluster.QuickHull.js" > < / script >
< script src = "../../src/MarkerCluster.Spiderfier.js" > < / script >
< / head >
< body >
< div id = "map" > < / div >
< button id = "doit" > Add 1000 Markers< / button > < br / >
< span > Bug < a href = "https://github.com/danzel/Leaflet.markercluster/issues/51" > #51< / a > . Click the button. It will add 1000 markers to the map. this should be fast, but previously in (non-IE browsers) it was very slow.< / span > < br / >
< span > Bug < a href = "https://github.com/danzel/Leaflet.markercluster/issues/43" > #43< / a > . Improving performance more.< / span > < br / >
< span id = "time" > < / span >
< script type = "text/javascript" >
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var tiles = L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
maxZoom: 18,
attribution: '© < a href = "http://osm.org/copyright" > OpenStreetMap< / a > contributors'
}),
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latlng = new L.LatLng(50.5, 30.51);
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var map = new L.Map('map', {center: latlng, zoom: 15, layers: [tiles]});
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var markers = new L.MarkerClusterGroup();
var markersList = [];
function getRandomLatLng(map) {
var bounds = map.getBounds(),
southWest = bounds.getSouthWest(),
northEast = bounds.getNorthEast(),
lngSpan = northEast.lng - southWest.lng,
latSpan = northEast.lat - southWest.lat;
return new L.LatLng(
southWest.lat + latSpan * Math.random(),
southWest.lng + lngSpan * Math.random());
}
function populate(length) {
var prestart = +new Date();
var list = [], i;
for (i = 0; i < length ; i + + ) {
var m = new L.Marker(getRandomLatLng(map));
list.push(m);
}
var start = +new Date();
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markers.addLayers(list);
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var end = +new Date();
document.getElementById('time').innerHTML = 'Creating 1000 markers took: ' + (start - prestart) + 'ms . Appending 1000 markers took: ' + (end - start) + 'ms';
return false;
}
populate(1000);
var start = +new Date();
map.addLayer(markers);
var end = +new Date();
document.getElementById('time').innerHTML += ' . Adding to map took: ' + (end - start) + 'ms';
//Ugly add/remove code
L.DomUtil.get('doit').onclick = function () {
populate(1000);
};
< / script >
< / body >
< / html >
