AzureMapsCodeSamples/Samples/Map/Limit map view with maxBounds/Limit map view with maxBounds.html at main · Azure-Samples/AzureMapsCodeSamples · GitHub

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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 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" /><meta name="version" content="1.0" />
    <meta name="screenshot" content="screenshot.jpg" />

    <!-- Add references to the Azure Maps Map control JavaScript and CSS files. -->
    <link href="https://atlas.microsoft.com/sdk/javascript/mapcontrol/3/atlas.min.css" rel="stylesheet" />
    <script src="https://atlas.microsoft.com/sdk/javascript/mapcontrol/3/atlas.min.js"></script>

    <script>
        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() {
            //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',
                language: 'Auto',

                //Add authentication details for connecting to Azure Maps.
                authOptions: {
                    // Use SAS token for authentication
                    authType: 'sas',
                    getToken: function (resolve, reject, map) {
                        // URL to your authentication service that retrieves a SAS Token
                        var tokenServiceUrl = 'https://samples.azuremaps.com/api/GetAzureMapsSasToken';

                        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>Limit map view with maxBounds</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>