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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title></title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.14.1/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.14.1/mapbox-gl.css' rel='stylesheet' />
<style>
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<script src='https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-compare/v0.0.1/mapbox-gl-compare.js'></script>
<link rel='stylesheet' href='https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-compare/v0.0.1/mapbox-gl-compare.css' type='text/css' />
<style>
body {
overflow: hidden;
}
body * {
-webkit-touch-callout: none;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
.map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
<div id='before' class='map'></div>
<div id='after' class='map'></div>
<script>
// make the url passable
function getQueryVariable(variable) {
var query = window.location.search.substring(1);
var vars = query.split("&");
for (var i=0;i<vars.length;i++) {
var pair = vars[i].split("=");
if(pair[0] == variable){return pair[1];}
}
return(false);
}
var style1 = getQueryVariable('style1');
var style2 = getQueryVariable('style2');
// hash treatment
if(!hash) {
var hashZoom=1.37;
var hashLat=8.9;
var hashLng=16.0;
} else {
var hash = window.location.hash;
var hashValues = hash.split("/");
var hashZoom = hashValues[0].split("#");
var hashZoom = hashZoom[1];
var hashLng = hashValues[2];
var hashLat = hashValues[1];
}
mapboxgl.accessToken = 'pk.eyJ1IjoibWF0dCIsImEiOiJTUHZkajU0In0.oB-OGTMFtpkga8vC48HjIg';
var before = new mapboxgl.Map({
container: 'before',
style: 'mapbox://styles/matt/' + style1,
center: [hashLng, hashLat],
zoom: hashZoom,
hash: true,
});
var after = new mapboxgl.Map({
container: 'after',
style: 'mapbox://styles/matt/' + style2,
center: [hashLng, hashLat],
zoom: hashZoom,
hash: true,
});
new mapboxgl.Compare(before, after);
</script>
</body>
</html>