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<!DOCTYPE html>
<html lang="en">
<head>
<title>Limit map view with maxBounds - Azure Maps Web SDK Samples</title>
<meta charset="utf-8" />
<link rel="shortcut icon" href="/favicon.ico" />
<meta http-equiv="x-ua-compatible" content="IE=Edge" />
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
<meta name="description" content="This sample shows how to the limit the map view by using the maxBounds options of the map." />
<meta name="keywords" content="Microsoft maps, map, gis, API, SDK, map, max bounds" />
<meta name="author" content="Microsoft Azure Maps" />
<!-- Add references to the Azure Maps Map control JavaScript and CSS files. -->
<link rel="stylesheet" href="https://atlas.microsoft.com/sdk/javascript/mapcontrol/2/atlas.min.css" type="text/css" />
<script src="https://atlas.microsoft.com/sdk/javascript/mapcontrol/2/atlas.min.js"></script>
<script type='text/javascript'>
var map, datasource;
//The bounding box to limit the map view to. Format [West, South, East, North]
var boundingBox = [-118.851303, 32.721998, -117.659286, 34.831255];
function GetMap() {
//Point the Azure Maps domain to the US Azure Gov Cloud domain.
atlas.setDomain('atlas.azure.us');
//Initialize a map instance.
map = new atlas.Map('myMap', {
//Pass the bounding box into the maxBounds option to limit the maps movement over that area.
maxBounds: boundingBox,
//Optionally center the map on the bounding box.
center: atlas.data.BoundingBox.getCenter(boundingBox),
view: 'Auto',
//Add authentication details for connecting to Azure Maps.
authOptions: {
//Use Azure Active Directory authentication.
authType: 'anonymous',
clientId: 'c9f2f391-13f1-407b-a4a5-f0a241bacfbf', //Your Azure Active Directory client id for accessing your Azure Maps account.
getToken: function (resolve, reject, map) {
//URL to your authentication service that retrieves an Azure Active Directory Token.
var tokenServiceUrl = 'https://azuremapscodesamples.azurewebsites.us/Common/TokenService.ashx';
fetch(tokenServiceUrl).then(r => r.text()).then(token => resolve(token));
}
//Alternatively, use an Azure Maps key. Get an Azure Maps key at https://azure.com/maps. NOTE: The primary key should be used as the key.
//authType: 'subscriptionKey',
//subscriptionKey: '<Your Azure Maps Key>'
}
});
//For reference, create a polygon from the maxBounds and display it on the map.
map.events.add('ready', function () {
datasource = new atlas.source.DataSource();
map.sources.add(datasource);
datasource.add(atlas.math.boundingBoxToPolygon(boundingBox));
//Create a layer to render the outline of the polygon data.
map.layers.add(new atlas.layer.LineLayer(datasource, null, {
strokeColor: 'red'
}));
});
}
function toggleMaxBounds(elm) {
//Update the maxBounds option. Setting it to null will cause it to revert to the default (full globe).
map.setCamera({
maxBounds: (elm.checked) ? boundingBox : null
});
}
</script>
</head>
<body onload="GetMap()">
<div id="myMap" style="position:relative;width:100%;min-width:290px;height:600px;"></div>
<div style="position:absolute;top:0px;left:calc(50% - 100px);background-color:white;padding:5px;">
Max bounds enabled <input type="checkbox" checked="checked" onclick="toggleMaxBounds(this)" />
</div>
<fieldset style="width:calc(100% - 30px);min-width:290px;margin-top:10px;">
<legend><h1 style="font-size:16px">Limit map view with maxBounds</h1></legend>
This sample shows how to the limit the users ability to pan and zoom the map to specific bounding box area.
</fieldset>
</body>
</html>