Samples/Spatial Data Services/Draw Search Area/Draw Search Area.html

﻿<!DOCTYPE html>
<html lang="en">
<head>
    <title>Draw Search Area - Bing Maps 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 combine the drawing tools with the spatial math module together filter pushpins that intersect with a drawn area." />
    <meta name="keywords" content="Microsoft maps, map, gis, API, SDK, Bing, Bing Maps" />
    <meta name="author" content="Microsoft Bing Maps" />
    <meta name="screenshot" content="screenshot.jpg" />
    
    <script>
    var map, drawingManager;

    //Query URL to the Fourth Coffe Shop data source
    var sdsDataSourceUrl = 'http://spatial.virtualearth.net/REST/v1/data/20181f26d9e94c81acdf9496133d4f23/FourthCoffeeSample/FourthCoffeeShops';

    function GetMap() {
        map = new Microsoft.Maps.Map('#myMap', {
            center: new Microsoft.Maps.Location(47.6088, -122.3381),
            zoom: 13
        });

        //Load the DrawingTools, SpatialDataServices modules.
        Microsoft.Maps.loadModule(['Microsoft.Maps.DrawingTools', 'Microsoft.Maps.SpatialDataService'], function () {
            //Create an instance of the DrawingTools class and bind it to the map.
            var tools = new Microsoft.Maps.DrawingTools(map);

            //Show the drawing toolbar and enable editting on the map.
            tools.showDrawingManager(function (manager) {
                //Store a reference to the drawing manager as it will be useful later.
                drawingManager = manager;

                //Limit which tools appear in the drawing toolbar.
                manager.setOptions({
                    drawingBarActions: Microsoft.Maps.DrawingTools.DrawingBarAction.polygon
                });

                //Add an event for when a drawing has ended.
                Microsoft.Maps.Events.addHandler(manager, 'drawingEnded', drawingChangedHandler);

                //Add an event for when a drawing has ended.
                Microsoft.Maps.Events.addHandler(manager, 'drawingModeChanged', drawingModeChangedHandler);
            })
        });
    }

    function drawingModeChangedHandler(mode) {
        //If the user decides to draw a new shape, clear the drawing layer.
        if (mode != Microsoft.Maps.DrawingTools.DrawingMode.none &&
            mode != Microsoft.Maps.DrawingTools.DrawingMode.erase &&
            mode != Microsoft.Maps.DrawingTools.DrawingMode.edit) {
            //User must have set it to draw a new shape. 
            //Delete any current shapes in the drawing layer.
            drawingManager.clear();
        }
    }

    function drawingChangedHandler(shape) {      
        //Remove any existing data from the map.
        map.entities.clear();
        
        //If querying a spatial database like SQL, use the SpatialMath module and ensure the shape is valid.
        //This step isn't needed when using the Spatial Data Services.
        //shape = Microsoft.Maps.SpatialMath.Geometry.makeValid(shape);

        if (shape instanceof Microsoft.Maps.Polygon) {
            //Ensure polygons are closed.
            var locs = shape.getLocations();
            if (!Microsoft.Maps.Location.areEqual(locs[0], locs[locs.length - 1])) {
                locs.push(locs[0]);
            }
            shape.setLocations(locs);
        }

        var shapeWkt = Microsoft.Maps.WellKnownText.write(shape);

        if (shapeWkt) {
            //Create a query to get data that intrsects the bounds of the map.
            var queryOptions = {
                queryUrl: sdsDataSourceUrl,
                top: 250,
                spatialFilter: {
                    spatialFilterType: 'intersects',
                    intersects: shapeWkt
                }
            };

            //Process the query.
            Microsoft.Maps.SpatialDataService.QueryAPIManager.search(queryOptions, map, function (data) {
                //Add results to the map.
                map.entities.push(data);
            });
        }
    }
    </script>
    
</head>
<body>
    <div id="myMap" style="position:relative;width:100%;min-width:290px;height:600px;background-color:gray"></div>

    <fieldset style="width:800px;margin-top:10px;">
        <legend>Draw Search Area Sample</legend>
        This sample shows how to combine the drawing tools with the spatial math module together filter pushpins that intersect with a drawn area. 
        The pushpins that are filtered will change color to demonstrate that they were filtered. <br /><br />
        To try this demo, press the polygon button, draw a polygon, when done, press ESC or click the polygon button again. 
    </fieldset>

    <script>
        // Dynamic load the Bing Maps Key and Script
        // Get your own Bing Maps key at https://www.microsoft.com/maps
        (async () => {
            let script = document.createElement("script");
            let bingKey = await fetch("https://samples.azuremaps.com/api/GetBingMapsKey").then(r => r.text()).then(key => { return key });
            script.setAttribute("src", `https://www.bing.com/api/maps/mapcontrol?callback=GetMap&key=${bingKey}`);
            document.body.appendChild(script);
        })();
    </script>
</body>
</html>