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index.ts
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index.ts
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/**
* @license
* Copyright 2019 Google LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
// [START maps_directions_waypoints]
function initMap(): void {
const directionsService = new google.maps.DirectionsService();
const directionsRenderer = new google.maps.DirectionsRenderer();
const map = new google.maps.Map(
document.getElementById("map") as HTMLElement,
{
zoom: 6,
center: { lat: 41.85, lng: -87.65 },
}
);
directionsRenderer.setMap(map);
(document.getElementById("submit") as HTMLElement).addEventListener(
"click",
() => {
calculateAndDisplayRoute(directionsService, directionsRenderer);
}
);
}
function calculateAndDisplayRoute(
directionsService: google.maps.DirectionsService,
directionsRenderer: google.maps.DirectionsRenderer
) {
const waypts: google.maps.DirectionsWaypoint[] = [];
const checkboxArray = document.getElementById(
"waypoints"
) as HTMLSelectElement;
for (let i = 0; i < checkboxArray.length; i++) {
if (checkboxArray.options[i].selected) {
waypts.push({
location: (checkboxArray[i] as HTMLOptionElement).value,
stopover: true,
});
}
}
directionsService
.route({
origin: (document.getElementById("start") as HTMLInputElement).value,
destination: (document.getElementById("end") as HTMLInputElement).value,
waypoints: waypts,
optimizeWaypoints: true,
travelMode: google.maps.TravelMode.DRIVING,
})
.then((response) => {
directionsRenderer.setDirections(response);
const route = response.routes[0];
const summaryPanel = document.getElementById(
"directions-panel"
) as HTMLElement;
summaryPanel.innerHTML = "";
// For each route, display summary information.
for (let i = 0; i < route.legs.length; i++) {
const routeSegment = i + 1;
summaryPanel.innerHTML +=
"<b>Route Segment: " + routeSegment + "</b><br>";
summaryPanel.innerHTML += route.legs[i].start_address + " to ";
summaryPanel.innerHTML += route.legs[i].end_address + "<br>";
summaryPanel.innerHTML += route.legs[i].distance!.text + "<br><br>";
}
})
.catch((e) => window.alert("Directions request failed due to " + status));
}
declare global {
interface Window {
initMap: () => void;
}
}
window.initMap = initMap;
// [END maps_directions_waypoints]
export {};