Samples/Spatial Math/Cardinal Splines Basics/Cardinal Splines Basics.html

﻿<!DOCTYPE html>
<html lang="en">
<head>
    <title>Cardinal Splines Basics - 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="Generate the locations of a cardinal spline that passes through these locations." />
    <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', {});

        //Load the Spatial Math module.
        Microsoft.Maps.loadModule('Microsoft.Maps.SpatialMath', function () {
            //Generate some random locations on the map.
            var locs = Microsoft.Maps.TestDataGenerator.getLocations(5, map.getBounds());

            //Add pushpins to the map to show the random locations that were generated.
            for (var i = 0; i < locs.length; i++) {
                map.entities.push(new Microsoft.Maps.Pushpin(locs[i]));
            }

            //Generate the locations of a cardinal spline that passes through these locations.
            locs = Microsoft.Maps.SpatialMath.getCardinalSpline(locs);

            //Create a polyline from the cardinal spline locations.
            var spline = new Microsoft.Maps.Polyline(locs, { strokeThickness: 3 });
            map.entities.push(spline);
        });
    }
    </script>
    
</head>
<body>
    <div id="myMap" style="position:relative;width:100%;min-width:290px;height:600px;background-color:gray"></div>

    <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>