AzureMapsCodeSamples/Samples/Weather/Get weather along a route/Get weather along a route.html at main · Azure-Samples/AzureMapsCodeSamples · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <title>Get weather along a route - 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 retrieve weather data for all the waypoints along a route." />
    <meta name="keywords" content="Microsoft maps, map, gis, API, SDK, REST, service, weather, AccuWeather, forecast, directions, route, routing" />
    <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>

    <!-- Add a reference to the Azure Maps Rest Helper JavaScript file. -->
    <script src="https://samples.azuremaps.com/lib/azure-maps/azure-maps-helper.min.js"></script>

    <script>
        var map, points, datasource, routeLine;

        // URL for the Azure Maps Weather Along Route API.
        var weatherAlongRouteUrl = 'https://{azMapsDomain}/weather/route/json?api-version=1.0&query={query}';

        // URL for the Azure Maps Route API.
        var routeUrl = 'https://{azMapsDomain}/route/directions/json?api-version=1.0&query={query}&maxAlternatives=0&instructionsType=text&traffic=true';

        // URL for the Azure Maps Search Geocoder API.
        var geocodeUrl = 'https://{azMapsDomain}/search/address/json?api-version=1.0&query={query}&limit=1';

        function getMap() {
            // Initialize a map instance.
            map = new atlas.Map('myMap', {
                center: [-122.25, 47.64],
                zoom: 11,
                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));
                    }
                }
            });

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

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

                //Add a layer for rendering the weather data points.
                var waypointLayer = new atlas.layer.BubbleLayer(datasource, null, {
                    createIndicators: true, // to enable bubble layer a11y feature
                    //color: ['get', 'color'],
                    filter: ['any', ['==', ['geometry-type'], 'Point'], ['==', ['geometry-type'], 'MultiPoint']] //Only render Point or MultiPoints in this layer.
                });

                map.layers.add([
                    //Add a layer for rendering line data.
                    new atlas.layer.LineLayer(datasource, null, {
                        strokeColor: 'rgb(0, 204, 153)',
                        strokeWidth: 5,
                        filter: ['any', ['==', ['geometry-type'], 'LineString'], ['==', ['geometry-type'], 'MultiLineString']]	//Only render LineString or MultiLineString in this layer.
                    }),
                    waypointLayer
                ]);

                //Add click events to the waypoint layer.
                map.events.add('click', waypointLayer, featureClicked);

                //Create a popup but leave it closed so we can update it and display it later.
                popup = new atlas.Popup();
            });
        }

        function calculateRoute() {
            datasource.clear();

            var start = document.getElementById('startTbx').value;
            var end = document.getElementById('endTbx').value;

            if (start == '' || end == '') {
                alert('Invalid waypoint point specified.');
                return;
            }

            //Geocode the start waypoint.
            geocodeQuery(start, function (startPoint) {
                if (!startPoint) {
                    alert('Unable to geocode start waypoint.');
                    return;
                }

                //Geocode the end waypoint.
                geocodeQuery(end, function (endPoint) {
                    if (!endPoint) {
                        alert('Unable to geocode end waypoint.');
                        return;
                    }

                    var routeRequestURL = routeUrl
                        .replace('{query}', `${startPoint.lat},${startPoint.lon}:${endPoint.lat},${endPoint.lon}`);

                    processRequest(routeRequestURL).then(directions => {
                        // Extract the first route from the directions.
                        const route = directions.routes[0];

                        // Combine all leg coordinates into a single array.
                        const routeCoordinates = route.legs.flatMap(leg => leg.points.map(point => [point.longitude, point.latitude]));

                        // Create a LineString from the route path points.
                        const routeLine = new atlas.data.LineString(routeCoordinates);

                        // Add it to the data source.
                        datasource.add(routeLine);

                        //Have the map focus on the route.
                        map.setCamera({
                            bounds: atlas.data.BoundingBox.fromData(routeLine),
                            padding: 40
                        });

                        var waypoints = [];
                        var alongRouteWaypoints = [];
                        var heading = 0;

                        //Loop through up to 60 instructions and create waypoints.
                        //Capture the waypoint information needed for the weather along route API which is "latitude,longitude,ETA (in minutes),heading".
                        var len = Math.min(route.guidance.instructions.length, 60);

                        for (var i = 0; i < len; i++) {
                            var ins = route.guidance.instructions[i];

                            var timeInMinutes = Math.round(ins.travelTimeInSeconds / 60);

                            //Don't get weather for instructions that are more than two hours away from the start of the route.
                            if (timeInMinutes > 120) {
                                break;
                            }

                            var pos = [ins.point.longitude, ins.point.latitude];

                            waypoints.push(new atlas.data.Feature(new atlas.data.Point(pos), ins));

                            //Calculate the heading.
                            if (i < route.guidance.instructions.length - 1) {
                                var ins2 = route.guidance.instructions[i + 1];
                                heading = Math.round(atlas.math.getHeading(pos, [ins2.point.longitude, ins2.point.latitude]));
                            }

                            alongRouteWaypoints.push(`${ins.point.latitude},${ins.point.longitude},${timeInMinutes},${heading}`);
                        }

                        //Get weather data.
                        var weatherAlongRouteRequestUrl = weatherAlongRouteUrl
                            .replace('{query}', alongRouteWaypoints.join(':'));

                        processRequest(weatherAlongRouteRequestUrl).then(response => {
                            if (response && response.waypoints && response.waypoints.length === waypoints.length) {

                                //Combine the weather data in with each waypoint.
                                for (var i = 0, len = response.waypoints.length; i < len; i++) {
                                    Object.assign(waypoints[i].properties, response.waypoints[i]);
                                }

                                //Render the waypoints on the map.
                                datasource.add(waypoints);
                            }
                        });
                    });
                    //
                });
            });
        }

        //Geocode the query and return the first coordinate.
        function geocodeQuery(query, callback) {

            var geocodeRequestUrl = geocodeUrl
                .replace('{query}', encodeURIComponent(query));

            if (callback) {
                processRequest(geocodeRequestUrl).then(geocode => {
                    if (geocode.results.length > 0) {
                        callback(geocode.results[0].position);
                    } else {
                        callback(null);
                    }
                });
            }
        }

        function featureClicked(e) {
            //Make sure the event occurred on a shape feature.
            if (e.shapes && e.shapes.length > 0) {
                //Get the properties of the feature.
                var properties = e.shapes[0].getProperties();

                //Set the content and position of the popup.
                popup.setOptions({
                    //Update the content of the popup.
                    content: atlas.PopupTemplate.applyTemplate(properties, {
                        //Since there is a lot of content, and we trust the content, don't sandbox it. Sandboxing limits the amount of data that can be rendered in the popup.
                        sandboxContent: false
                    }),

                    //Update the position of the popup with the pins coordinate.
                    position: e.shapes[0].getCoordinates()
                });

                //Open the popup.
                popup.open(map);
            }
        }

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

    <div style="position:absolute;top:15px;left:15px;background-color:white;padding:10px;border-radius:10px;">
        <table>
            <tr>
                <td>Start: </td>
                <td><input type="text" id="startTbx" value="Seattle" /></td>
            </tr>
            <tr>
                <td>End: </td>
                <td><input type="text" id="endTbx" value="Redmond" /></td>
            </tr>
            <tr>
                <td></td>
                <td><input type="button" value="Calculate Route" onclick="calculateRoute()" /></td>
            </tr>
        </table>
    </div>

    <fieldset style="width:calc(100% - 30px);min-width:290px;margin-top:10px;">
        <legend>Get weather along a route</legend>
        This sample shows how to retrieve weather data for all the waypoints along a route.
        All weather metadata is combined with the instruction details for each waypoint.
        Click on a waypoint to display a popup with all these details.
        Note that the weather along a route API only supports up to 60 waypoints and routes that complete within two hours of the current time.
    </fieldset>
</body>
</html>