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assertions-tesselate.html
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assertions-tesselate.html
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<!doctype html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://rawcdn.githack.com/openlayers/openlayers.github.io/master/en/v5.3.0/css/ol.css" type="text/css">
<link rel="stylesheet" href="assets/css/styles.css" type="text/css">
<script src="//cdn.jsdelivr.net/npm/@turf/turf@5/turf.min.js"></script>
<script src="https://rawcdn.githack.com/openlayers/openlayers.github.io/master/en/v5.3.0/build/ol.js"></script>
<script src="assets/js/es6-promise.min.js"></script>
<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL,fetch"></script>
<script src="assets/js/helpers.js"></script>
<title>Turf and OpenLayers 3 - Envelope</title>
</head>
<body>
<div id="map" class="map"></div>
<script type="text/javascript">
// Declare a source for polygons
var vectorSourcePolygons = new ol.source.Vector();
var vectorLayerPolygons = new ol.layer.Vector({
source: vectorSourcePolygons,
style: [
new ol.style.Style({
stroke: new ol.style.Stroke({
color: [0, 121, 88, 1],
width: 2
})
})
]
});
// Instanciate a map and add layers
var map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
}),
vectorLayerPolygons
],
view: new ol.View({
center: ol.proj.fromLonLat([-1.5603, 47.2383]),
zoom: 11
})
});
fetch('assets/data/agglo_poly_nantes.geojson').then(function(response) {
return response.json().then(function(polys_fc) {
console.log('FeatureCollection : ', polys_fc);
var tesselated = turf.tesselate(polys_fc.features[0]);
vectorSourcePolygons.addFeatures(geojsonToFeatures(tesselated, {
featureProjection: 'EPSG:3857'
}));
});
});
</script>
</body>
</html>