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Polygon with Label.html
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Polygon with Label.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Polygon with Label - Bing Maps Samples</title>
<meta charset="utf-8" />
<link rel="shortcut icon" href="/favicon.ico"/>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
<meta name="description" content="This sample shows how to add a label to a polygon by using a pushpin." />
<meta name="keywords" content="Microsoft maps, map, gis, API, SDK, Bing, Bing Maps" />
<meta name="author" content="Microsoft Bing Maps" />
<meta name="screenshot" content="screenshot.jpg" />
<script>
var map, polygons;
function GetMap() {
map = new Microsoft.Maps.Map('#myMap', {});
//Load the Spatial Math module.
Microsoft.Maps.loadModule("Microsoft.Maps.SpatialMath", function () {
//Generate some random polygons and add then to the map with labels.
polygons = Microsoft.Maps.TestDataGenerator.getPolygons(5, map.getBounds());
for (var i = 0; i < polygons.length; i++) {
addPolygonWithLabel(polygons[i], 'Polygon ' + i);
}
});
}
function addPolygonWithLabel(polygon, label) {
//Add the polygon to the map.
map.entities.push(polygon);
//Add a click event to the polygon which will remove it from the map.
Microsoft.Maps.Events.addHandler(polygon, 'click', function (e) { removePolygon(e.target) });
//Calculate the centroid of the polygon.
var centroid = Microsoft.Maps.SpatialMath.Geometry.centroid(polygon);
//Create a pushpin that has a transparent icon and a title property set to the label value.
var labelPin = new Microsoft.Maps.Pushpin(centroid, {
icon: '<svg xmlns="https://www.w3.org/2000/svg" width="1" height="1"></svg>',
title: label
});
//Store a reference to the label pushpin in the polygon metadata.
polygon.metadata = { label: labelPin };
//Add the label pushpin to the map.
map.entities.push(labelPin);
}
function removePolygon(polygon) {
if (polygon.metadata && polygon.metadata.label) {
map.entities.remove(polygon.metadata.label);
}
map.entities.remove(polygon);
}
</script>
</head>
<body>
<div id="myMap" style="position:relative;width:100%;min-width:290px;height:600px;background-color:gray"></div>
<fieldset style="width:800px;margin-top:10px;">
<legend>Polygon with Label Sample</legend>
This sample shows how to add a label to a polygon by using a pushpin. A click event has been added to each polygon which will remove it and its label from the map.
</fieldset>
<script>
// Dynamic load the Bing Maps Key and Script
// Get your own Bing Maps key at https://www.microsoft.com/maps
(async () => {
let script = document.createElement("script");
let bingKey = await fetch("https://samples.azuremaps.com/api/GetBingMapsKey").then(r => r.text()).then(key => { return key });
script.setAttribute("src", `https://www.bing.com/api/maps/mapcontrol?callback=GetMap&key=${bingKey}`);
document.body.appendChild(script);
})();
</script>
</body>
</html>