AzureMapsCodeSamples/Samples/Animations/Animated traffic flow/Animated traffic flow.html at main · Azure-Samples/AzureMapsCodeSamples · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <title>Animated traffic flow - 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 animate the flow of traffic relative to the congestion level using the flowing dashed line animation." />
    <meta name="keywords" content="Microsoft maps, map, gis, API, SDK, animation, animate, animations, traffic flow, traffic, flow, dashed" />
    <meta name="author" content="Microsoft Azure Maps" /><meta name="version" content="1.0" />
    <meta name="screenshot" content="screenshot.gif" />

    <!-- 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>

    <!-- Add reference to the animation module. -->
    <script src="/lib/azure-maps/azure-maps-animations.min.js"></script>

    <script>
        var map, layer, animation;

        function getMap() {
            //Initialize a map instance.
            map = new atlas.Map('myMap', {
                center: [-74, 40.72],
                zoom: 15,
                style: 'grayscale_dark',
                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]'
                }
            });

            //Wait until the map resources are ready.
            map.events.add('ready', function () {
                //Create a vector tile source and add it to the map.
                datasource = new atlas.source.VectorTileSource(null, {
                    tiles: ['https://{azMapsDomain}/traffic/flow/tile/pbf?api-version=1.0&style=relative&zoom={z}&x={x}&y={y}'],
                    maxZoom: 22
                });
                map.sources.add(datasource);

                //Common style options for traffic background colors.
                var trafficBackgroundOptions = {
                    //The name of the data layer within the data source to pass into this rendering layer.
                    sourceLayer: 'Traffic flow',

                    //Color the roads based on the level of traffic.
                    strokeColor: [
                        'step',
                        ['get', 'traffic_level'],
                        '#6B0512', //Dark red
                        0.01, '#EE2F53', //Red
                        0.8, 'orange', //Orange
                        1, "#66CC99" //Green
                    ],

                    //Scale the width of roads based on the level of traffic.
                    strokeWidth: [
                        'interpolate',
                        ['exponential', 2],
                        ['zoom'],
                        12, 3,
                        17, 9
                    ],
                };

                //Create two line layer for the base traffic flow color. One layer for both direction traffic data, and one layer for single line traffic data.
                map.layers.add([
                    new atlas.layer.LineLayer(datasource, null, Object.assign({
                        //For traffic data that represents one side of the road, offset it.
                        offset: [
                            'interpolate',
                            ['exponential', 2],
                            ['zoom'],
                            12, 2,
                            17, 6
                        ],

                        filter: ['==', ['get', 'traffic_road_coverage'], 'one_side']
                    }, trafficBackgroundOptions)),

                    new atlas.layer.LineLayer(datasource, null, Object.assign({
                        filter: ['==', ['get', 'traffic_road_coverage'], 'full']
                    }, trafficBackgroundOptions))
                ], 'labels');

                //Common style options for traffic flow dashed lines.
                var trafficFLowLineOptions = {
                    sourceLayer: 'Traffic flow',
                    strokeColor: 'black',

                    //Scale the width of roads based on the level of traffic.
                    strokeWidth: [
                        'interpolate',
                        ['exponential', 2],
                        ['zoom'],
                        12, 1,
                        17, 4
                    ]
                };

                //Create an offset for the layers that has two directional traffic data.
                var offsetExp = [
                    'interpolate',
                    ['exponential', 2],
                    ['zoom'],
                    12, 3,
                    17, 7
                ];

                //Create line layers for the different levels of traffic flow.
                var oneSideSlowFlowLayer = new atlas.layer.LineLayer(datasource, null, Object.assign({
                    offset: offsetExp,
                    filter: ['all', ['==', ['get', 'traffic_road_coverage'], 'one_side'], ['>', ['get', 'traffic_level'], 0], ['<=', ['get', 'traffic_level'], 0.01]]
                }, trafficFLowLineOptions));

                var slowFlowLayer = new atlas.layer.LineLayer(datasource, null, Object.assign({
                    filter: ['all', ['==', ['get', 'traffic_road_coverage'], 'full'], ['>', ['get', 'traffic_level'], 0], ['<=', ['get', 'traffic_level'], 0.01]]
                }, trafficFLowLineOptions));

                var oneSideMidFlowLayer = new atlas.layer.LineLayer(datasource, null, Object.assign({
                    offset: offsetExp,
                    filter: ['all', ['==', ['get', 'traffic_road_coverage'], 'one_side'], ['>', ['get', 'traffic_level'], 0.01], ['<=', ['get', 'traffic_level'], 0.8]]
                }, trafficFLowLineOptions));

                var midFlowLayer = new atlas.layer.LineLayer(datasource, null, Object.assign({
                    filter: ['all', ['==', ['get', 'traffic_road_coverage'], 'full'], ['>', ['get', 'traffic_level'], 0.01], ['<=', ['get', 'traffic_level'], 0.8]]
                }, trafficFLowLineOptions));

                var oneSideFastFlowLayer = new atlas.layer.LineLayer(datasource, null, Object.assign({
                    offset: offsetExp,
                    filter: ['all', ['==', ['get', 'traffic_road_coverage'], 'one_side'], ['>', ['get', 'traffic_level'], 0.8]]
                }, trafficFLowLineOptions));

                var fastFlowLayer = new atlas.layer.LineLayer(datasource, null, Object.assign({
                    filter: ['all', ['==', ['get', 'traffic_road_coverage'], 'full'], ['>', ['get', 'traffic_level'], 0.8]]
                }, trafficFLowLineOptions));

                //Add the layers below the labels to make the map clearer.
                map.layers.add([oneSideSlowFlowLayer, slowFlowLayer, oneSideMidFlowLayer, midFlowLayer, oneSideFastFlowLayer, fastFlowLayer], 'labels');

                //Create a moving dashed line animation for each of the flow layers, but with different speedMultipliers.
                //Reverse the animation direction as it appears to ensure the correct flow directions for different side of the road for most countries (drive on the right side).
                var animationOptions = {
                    gapLength: 2,
                    dashLength: 2,
                    duration: 2000,
                    autoPlay: true,
                    loop: true,
                    reverse: true
                };

                atlas.animations.flowingDashedLine(oneSideSlowFlowLayer, Object.assign({ speedMultiplier: 0.25 }, animationOptions));
                atlas.animations.flowingDashedLine(slowFlowLayer, Object.assign({ speedMultiplier: 0.25 }, animationOptions));
                atlas.animations.flowingDashedLine(oneSideMidFlowLayer, Object.assign({ speedMultiplier: 1 }, animationOptions));
                atlas.animations.flowingDashedLine(midFlowLayer, Object.assign({ speedMultiplier: 1 }, animationOptions));
                atlas.animations.flowingDashedLine(oneSideFastFlowLayer, Object.assign({ speedMultiplier: 4 }, animationOptions));
                atlas.animations.flowingDashedLine(fastFlowLayer, Object.assign({ speedMultiplier: 4 }, animationOptions));
            });
        }
    </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>Animated traffic flow</legend>
        This sample shows how to animate the flow of traffic relative to the congestion level using the flowing dashed line animation.
        This sample uses the open source <a href="https://github.com/Azure-Samples/azure-maps-animations" target="_blank">Azure Maps Animation module</a>
    </fieldset>
</body>
</html>