// This example adds an animated symbol to a polyline.
function initMap(): void {
const map = new google.maps.Map(
document.getElementById("map") as HTMLElement,
{
center: { lat: 20.291, lng: 153.027 },
zoom: 6,
mapTypeId: "terrain",
}
);
// Define the symbol, using one of the predefined paths ('CIRCLE')
// supplied by the Google Maps JavaScript API.
const lineSymbol = {
path: google.maps.SymbolPath.CIRCLE,
scale: 8,
strokeColor: "#393",
};
// Create the polyline and add the symbol to it via the 'icons' property.
const line = new google.maps.Polyline({
path: [
{ lat: 22.291, lng: 153.027 },
{ lat: 18.291, lng: 153.027 },
],
icons: [
{
icon: lineSymbol,
offset: "100%",
},
],
map: map,
});
animateCircle(line);
}
// Use the DOM setInterval() function to change the offset of the symbol
// at fixed intervals.
function animateCircle(line: google.maps.Polyline) {
let count = 0;
window.setInterval(() => {
count = (count + 1) % 200;
const icons = line.get("icons");
icons[0].offset = count / 2 + "%";
line.set("icons", icons);
}, 20);
}
declare global {
interface Window {
initMap: () => void;
}
}
window.initMap = initMap;Note: Read the guide on using TypeScript and Google Maps. JavaScript
// This example adds an animated symbol to a polyline.
function initMap() {
const map = new google.maps.Map(document.getElementById("map"), {
center: { lat: 20.291, lng: 153.027 },
zoom: 6,
mapTypeId: "terrain",
});
// Define the symbol, using one of the predefined paths ('CIRCLE')
// supplied by the Google Maps JavaScript API.
const lineSymbol = {
path: google.maps.SymbolPath.CIRCLE,
scale: 8,
strokeColor: "#393",
};
// Create the polyline and add the symbol to it via the 'icons' property.
const line = new google.maps.Polyline({
path: [
{ lat: 22.291, lng: 153.027 },
{ lat: 18.291, lng: 153.027 },
],
icons: [
{
icon: lineSymbol,
offset: "100%",
},
],
map: map,
});
animateCircle(line);
}
// Use the DOM setInterval() function to change the offset of the symbol
// at fixed intervals.
function animateCircle(line) {
let count = 0;
window.setInterval(() => {
count = (count + 1) % 200;
const icons = line.get("icons");
icons[0].offset = count / 2 + "%";
line.set("icons", icons);
}, 20);
}
window.initMap = initMap;Note: The JavaScript is compiled from the TypeScript snippet. CSS
/*
* 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: 0;
padding: 0;
}
HTML
<html>
<head>
<title>Animating Symbols</title>
<link rel="stylesheet" type="text/css" href="./style.css" />
<script type="module" src="./index.js"></script>
</head>
<body>
<div id="map"></div>
<!--
The `defer` attribute causes the script to execute after the full HTML
document has been parsed. For non-blocking uses, avoiding race conditions,
and consistent behavior across browsers, consider loading using Promises. See
https://developers.google.com/maps/documentation/javascript/load-maps-js-api
for more information.
-->
<script
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"
defer
></script>
</body>
</html>
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4