Make polylines clickable

This example shows how to create a polyline that the drawsOccludedSegments property when clicked.

Read the documentation.

JavaScript

let map;
async function init() {
    const { Map3DElement, MapMode, AltitudeMode, Polyline3DInteractiveElement } = await google.maps.importLibrary("maps3d");
    map = new Map3DElement({
        center: { lat: 37.7927, lng: -122.4020, altitude: 65.93 }, range: 3362.87, tilt: 64.01, heading: 25.00,
        mode: MapMode.SATELLITE,
    });
    document.body.append(map);
    const polyline = new Polyline3DInteractiveElement({
        coordinates: [
            { lat: 37.80515638571346, lng: -122.4032569467164 },
            { lat: 37.80337073509504, lng: -122.4012878349353 },
            { lat: 37.79925208843463, lng: -122.3976697250461 },
            { lat: 37.7989102378512, lng: -122.3983408725656 },
            { lat: 37.79887832784348, lng: -122.3987094864192 },
            { lat: 37.79786443410338, lng: -122.4066878788802 },
            { lat: 37.79549248916587, lng: -122.4032992702785 },
            { lat: 37.78861484290265, lng: -122.4019489189814 },
            { lat: 37.78618687561075, lng: -122.398969592545 },
            { lat: 37.7892310309145, lng: -122.3951458683092 },
            { lat: 37.7916358762409, lng: -122.3981969390652 }
        ],
        strokeColor: 'blue',
        outerColor: 'white',
        strokeWidth: 10,
        outerWidth: 0.4,
        altitudeMode: AltitudeMode.RELATIVE_TO_GROUND, // Place it on the ground (as it has no altitude it will just be at ground height).
        drawsOccludedSegments: true, // Show the line through the buildings or anything else that might get in the way.
    });
    polyline.addEventListener('gmp-click', (event) => {
        // Toggle whether the line draws occluded segments.
        event.target.drawsOccludedSegments = !event.target.drawsOccludedSegments;
    });
    map.append(polyline);
}
init();
index.js

CSS

/* * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
html,
map {
  height: 100%;
}
body {
  height: 100%;
  margin: 0;
  padding: 0;
}
style.css

HTML

<html>
  <head>
    <title>Map</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="map"></div>

    <!-- prettier-ignore -->
    <script>(g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})
        ({key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "beta",});</script>
  </body>
</html>
index.html

Try Sample

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application. 

  git clone https://github.com/googlemaps-samples/js-api-samples.git
  cd samples/3d-polyline-click-event
  npm i
  npm start