Samples/Polygons/Polygon Fill Pattern/Polygon Fill Pattern.html

﻿<!DOCTYPE html>
<html lang="en">
<head>
    <title>Polygon Fill Pattern - 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 fill a polygon area using a pattern image rather than a solid color." />
    <meta name="keywords" content="Microsoft maps, map, gis, API, SDK, polyon, fill pattern" />
    <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;

        function getMap() {
            //Initialize a map instance.
            map = new atlas.Map('myMap', {
                view: 'Auto',

                //Add authentication details for connecting to Azure Maps.
                authOptions: {
                    //Use Microsoft Entra ID authentication.
                    authType: 'anonymous',
                    clientId: 'e6b6ab59-eb5d-4d25-aa57-581135b927f0', //Your Azure Maps client id for accessing your Azure Maps account.
                    getToken: function (resolve, reject, map) {
                        //URL to your authentication service that retrieves an Microsoft Entra ID Token.
                        var tokenServiceUrl = 'https://samples.azuremaps.com/api/GetAzureMapsToken';

                        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]'
                }
            });

            //Wait until the map resources are ready.
            map.events.add('ready', function () {

                //Load the custom fill image into the map resources. Ideal patterns will be square and have width/height values that are multiples of 2 for best alignment
                map.imageSprite.add('fill-checker-red', '/images/fill-patterns/fill-checker-red.png').then(function () {

                    //Create a data source and add it to the map.
                    datasource = new atlas.source.DataSource();
                    map.sources.add(datasource);

                    //Add polygon to data source.
                    datasource.add(new atlas.data.Polygon([[[-50, -20], [0, 40], [50, -20], [-50, -20]]]));

                    //Create a layer to render the polygon data and add it to the map, below the labels.
                    map.layers.add(new atlas.layer.PolygonLayer(datasource, null, {

                        //Add the fill pattern image to the layer.
                        fillPattern: 'fill-checker-red',

                        fillOpacity: 0.5
                    }), 'labels');
                });
            });
        }
    </script>
</head>
<body onload="getMap()">
    <div id="myMap" style="position:relative;width:100%;min-width:290px;height:600px;"></div>

    <fieldset style="width:calc(100% - 30px);min-width:290px;margin-top:10px;">
        <legend>Polygon Fill Pattern</legend>
        This sample shows how to fill a polygon area using a pattern image rather than a solid color. 
    </fieldset>
</body>
</html>