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inline.html
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inline.html
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<!DOCTYPE html>
<html>
<head>
<title>Navigation Functions (Heading)</title>
<script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
<script
src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=geometry&v=weekly"
defer
></script>
<style type="text/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;
}
#floating-panel {
position: absolute;
top: 10px;
left: 25%;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
text-align: center;
font-family: "Roboto", "sans-serif";
line-height: 30px;
padding-left: 10px;
}
</style>
<script>
"use strict";
// This example requires the Geometry library. Include the libraries=geometry
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=geometry">
let marker1, marker2;
let poly, geodesicPoly;
function initMap() {
const map = new google.maps.Map(document.getElementById("map"), {
zoom: 4,
center: {
lat: 34,
lng: -40.605
}
});
map.controls[google.maps.ControlPosition.TOP_CENTER].push(
document.getElementById("info")
);
marker1 = new google.maps.Marker({
map,
draggable: true,
position: {
lat: 40.714,
lng: -74.006
}
});
marker2 = new google.maps.Marker({
map,
draggable: true,
position: {
lat: 48.857,
lng: 2.352
}
});
const bounds = new google.maps.LatLngBounds(
marker1.getPosition(),
marker2.getPosition()
);
map.fitBounds(bounds);
google.maps.event.addListener(marker1, "position_changed", update);
google.maps.event.addListener(marker2, "position_changed", update);
poly = new google.maps.Polyline({
strokeColor: "#FF0000",
strokeOpacity: 1.0,
strokeWeight: 3,
map: map
});
geodesicPoly = new google.maps.Polyline({
strokeColor: "#CC0099",
strokeOpacity: 1.0,
strokeWeight: 3,
geodesic: true,
map: map
});
update();
}
function update() {
const path = [marker1.getPosition(), marker2.getPosition()];
poly.setPath(path);
geodesicPoly.setPath(path);
const heading = google.maps.geometry.spherical.computeHeading(
path[0],
path[1]
);
document.getElementById("heading").value = String(heading);
document.getElementById("origin").value = String(path[0]);
document.getElementById("destination").value = String(path[1]);
}
</script>
</head>
<body>
<div id="map"></div>
<div id="floating-panel">
Origin: <input type="text" readonly id="origin" /> Destination:
<input type="text" readonly id="destination" /><br />
Heading: <input type="text" readonly id="heading" /> degrees
</div>
</body>
</html>