UMass Amherst: Science Building Tour

Sample code for Google Maps Platform JavaScript API author(s): Justin Poehnelt

by aatallah

HTML

<!doctype html>
<!--
 @license
 Copyright 2019 Google LLC. All Rights Reserved.
 SPDX-License-Identifier: Apache-2.0
-->
<html>
  <head>
    <title>UMass Amherst: Science Building Tour</title>
    <link href='https://fonts.googleapis.com/css?family=Open Sans' rel='stylesheet'>
    <!-- jsFiddle will insert css and js -->
  </head>
  <body>
     <h4>UMass Amherst's Centers of Science: A Tour</h4>
     <p>
     The best place for parking, <b>Lot 25</b>, is highlighted in <span style= "color:#881c1c">red</span>. Then, follow the <span style= "color:#881c1c">red</span> line up <b>Holdsworth Way</b> to begin your journey!
     </p>
    <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: "AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg", v: "beta"});</script>
  </body>
</html>

CSS

/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */
/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
#map {
  height: 100%;
}

/* 
 * Optional: Makes the sample page fill the window. 
 */
html,
body {
  height: 100%;
  margin: 2px;
  padding: 0;
  font-family: 'Open Sans';
}

h4 {
  background-color: #881c1c;
  color: white;
  text-align: center;
  font-family: 'Open Sans';
}

p {
  font-size: 12px;
  text-align: center;
  font-family: 'Open Sans';
}

JavaScript

/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */
 
// Initial map generation
async function initMap() {
   const center = { lat: 42.392550, lng: -72.525031 };
  // Request needed libraries.
  const { Map, InfoWindow } = await google.maps.importLibrary("maps");
  const { AdvancedMarkerElement, PinElement } = await google.maps.importLibrary(
    "marker",
  );
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 15,
    center: center,
    mapId: "4504f8b37365c3d0",
    mapTypeId: "satellite",
    mapTypeControl: true,
    mapTypeControlOptions: {
    	style: google.maps.MapTypeControlStyle.DROPDOWN_MENU,
      mapTypeIds: ["roadmap", "satellite", "hybrid", "terrain"],
    }
  });
  
  // Set LatLng and title text for the markers. The first marker receives the initial focus when tab is pressed. Use arrow keys to move between markers; press tab again to cycle through the map controls.
  const tourStops = [
    {
      position: { lat: 42.3928651, lng: -72.5310157 },
      title: "Holdsworth Hall",
    },
    {
      position: { lat: 42.392345, lng: -72.530353 },
      title: "Hatch Laboratory",
    },
    {
    	position: {lat: 42.39322388850513, lng: -72.52903110731859},
    	title: "Knowles Engineering Building",
    },
    {
      position: { lat: 42.393152, lng: -72.5279834 },
      title: "Goessmann Laboratory",
    },
    {
      position:  {lat: 42.394121, lng: -72.5276503 },
      title: "Lederle Graduate Research Center",
    },
    {
    	position: {lat: 42.39378675772498, lng: -72.52638997969242},
      title: "Physical Sciences Building",
    },
    {
      position: { lat: 42.392550, lng: -72.525031 },
      title: "Integrated Science Building",
    },
    {
    	position: {lat: 42.39211102116256, lng: -72.5238536016437},
      title: "Life Sciences Building",
    },
    {
    	position: {lat: 42.39157781679017, lng: -72.52577048978628},
      title: "Hasbrouck...