Add a pattern to a polygon | UNL Map JS Docs

Use fill-pattern to draw a polygon from a repeating image pattern.

Note

If you want to test this example, edit it in JSFiddle or CodePen and replace the "YOUR-OWN-API-KEY" and "YOUR-OWN-VPM-ID" placeholders with your actual api key and vpm id.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Add a pattern to a polygon</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<script src="https://unpkg.com/unl-map-js@0.1.5/lib/unl-map-js.js"></script>
<link href="https://unpkg.com/unl-map-js@0.1.5/lib/unl-map-js.css" rel="stylesheet" />
<link
href="https://unpkg.com/maplibre-gl@2.1.9/dist/maplibre-gl.css"
rel="stylesheet"
/>
<style>
	body { margin: 0; padding: 0; }
	#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<div id="map"></div>
 
<script>
var map = new UnlSdk.Map({
container: "map",
apiKey: "YOUR-OWN-API-KEY",
vpmId: "YOUR-OWN-VPM-ID",
zoom: 1,
});
 
map.on("load", function () {
// Add GeoJSON data
map.addSource("source", {
type: "geojson",
data: {
type: "Feature",
properties: {},
geometry: {
type: "Polygon",
coordinates: [
[
[-30, -25],
[-30, 35],
[30, 35],
[30, -25],
[-30, -25],
],
],
},
},
});
 
// Load an image to use as the pattern
map.loadImage(
"https://upload.wikimedia.org/wikipedia/commons/thumb/6/60/Cat_silhouette.svg/64px-Cat_silhouette.svg.png",
function (err, image) {
// Throw an error if something went wrong
if (err) throw err;
 
// Declare the image
map.addImage("pattern", image);
 
// Use it
map.addLayer({
id: "pattern-layer",
type: "fill",
source: "source",
paint: {
"fill-pattern": "pattern",
},
});
}
);
});
</script>
 
</body>
</html>