Samples/Test Data Generator/Generate Pushpins within a Polygon/Generate Pushpins within a Polygon.html

﻿<!DOCTYPE html>
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<head>
    <title>Generate Pushpins within a Polygon - Bing Maps Samples</title>

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    <meta name="description" content="This sample shows how to use the TestDataGenerator and the Spatial Math module to generate random pushpins." />
    <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;

    function GetMap() {
        map = new Microsoft.Maps.Map('#myMap', {});

        Microsoft.Maps.loadModule('Microsoft.Maps.SpatialMath', function () {
            //The polygon that you want to generate random locations inside of.
            var polygon = Microsoft.Maps.TestDataGenerator.getPolygons(1, map.getBounds(), 5);
            map.entities.push(polygon);

            var pins = GetPushpinsWithinPolygon(polygon, 100);
            map.entities.push(pins);
        });
    }

    function GetPushpinsWithinPolygon(polygon, numPins) {
        var bounds = Microsoft.Maps.SpatialMath.Geometry.bounds(polygon);

        //Make sure the polygon is visible so we can see the result.
        map.setView({ bounds: bounds });

        var pins;
        var pinsInPolygon = [];
        var intersection;

        while (pinsInPolygon.length < numPins) {
            //Generate random pushpins that are within the bounding box of the polygon.
            pins = Microsoft.Maps.TestDataGenerator.getPushpins(numPins - pinsInPolygon.length, bounds);

            //Filter the random pushpins to those that are within the polygon.
            intersection = Microsoft.Maps.SpatialMath.Geometry.intersection(pins, polygon);
            if (intersection) {
                pinsInPolygon = pinsInPolygon.concat(intersection);
            }
        }

        return pinsInPolygon;
    }
    </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>Generate Pushpins within a Polygon Sample</legend>
        This sample shows how to use the TestDataGenerator and the Spatial Math module to generate random pushpins using the getPushpins function that are inside a polygon.<br />
        <a href="https://msdn.microsoft.com/en-us/library/mt712874.aspx">TestDataGenerator documentation</a><br/>
        <a href="https://msdn.microsoft.com/en-US/library/mt762861.aspx">Spatial Math Geometry documentation</a>
    </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}`);
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        })();
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