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index.ts
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index.ts
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/*
* Copyright 2019 Google LLC. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// [START maps_marker_animations_iteration]
// If you're adding a number of markers, you may want to drop them on the map
// consecutively rather than all at once. This example shows how to use
// window.setTimeout() to space your markers' animation.
const neighborhoods: google.maps.LatLngLiteral[] = [
{ lat: 52.511, lng: 13.447 },
{ lat: 52.549, lng: 13.422 },
{ lat: 52.497, lng: 13.396 },
{ lat: 52.517, lng: 13.394 },
];
let markers: google.maps.Marker[] = [];
let map: google.maps.Map;
function initMap(): void {
map = new google.maps.Map(document.getElementById("map") as HTMLElement, {
zoom: 12,
center: { lat: 52.52, lng: 13.41 },
});
}
function drop() {
clearMarkers();
for (let i = 0; i < neighborhoods.length; i++) {
addMarkerWithTimeout(neighborhoods[i], i * 200);
}
}
function addMarkerWithTimeout(
position: google.maps.LatLngLiteral,
timeout: number
) {
window.setTimeout(() => {
markers.push(
new google.maps.Marker({
position: position,
map,
animation: google.maps.Animation.DROP,
})
);
}, timeout);
}
function clearMarkers() {
for (let i = 0; i < markers.length; i++) {
markers[i].setMap(null);
}
markers = [];
}
// [END maps_marker_animations_iteration]
export { initMap };