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gmap.html
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<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.6.0/dist/leaflet.css" integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ==" crossorigin=""/>
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
.plane-icon {
padding:0px;
margin:0px;
}
#map_canvas { height: 100% }
#info {
position: absolute;
width:20%;
height:100%;
bottom:0px;
right:0px;
top:0px;
background-color: white;
border-left:1px #666 solid;
font-family:Helvetica;
}
#info div {
padding:0px;
padding-left:10px;
margin:0px;
}
#info div h1 {
margin-top:10px;
font-size:16px;
}
#info div p {
font-size:14px;
color:#333;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://unpkg.com/leaflet@1.6.0/dist/leaflet.js" integrity="sha512-gZwIG9x3wUXg2hdXF6+rVkLF/0Vi9U8D2Ntg4Ga5I5BZpVkVxlJWbSQtXPSiUTtC0TjtGOmxa1AJPuV0CPthew==" crossorigin=""></script>
<script type="text/javascript">
Map=null;
CenterLat=45.0;
CenterLon=9.0;
Planes={};
NumPlanes = 0;
Selected=null
function getIconForPlane(plane) {
var r = 255, g = 255, b = 0;
var maxalt = 40000; /* Max altitude in the average case */
var invalt = maxalt-plane.altitude;
var selected = (Selected == plane.hex);
if (invalt < 0) invalt = 0;
b = parseInt(255/maxalt*invalt);
/* As Icon we use the plane emoji, this is a simple solution but
is definitely a compromise: we expect the icon to be rotated
45 degrees facing north-east by default, this is true in most
systems but not all. */
var he = document.createElement("P");
he.innerHTML = '>';
var rotation = 45+360-plane.track;
var selhtml = '';
/* Give a border to the selected plane. */
if (Selected == plane.hex) {
selhtml = 'border:1px dotted #0000aa; border-radius:10px;';
} else {
selhtml = '';
}
he = '<div style="transform: rotate(-'+rotation+'deg); '+selhtml+'">✈️</div>';
var icon = L.divIcon({html: he, className: 'plane-icon'});
return icon;
}
function selectPlane(planehex) {
if (!Planes[planehex]) return;
var old = Selected;
Selected = planehex;
if (Planes[old]) {
/* Remove the highlight in the previously selected plane. */
Planes[old].marker.setIcon(getIconForPlane(Planes[old]));
}
Planes[Selected].marker.setIcon(getIconForPlane(Planes[Selected]));
refreshSelectedInfo();
}
/* Return a closure to caputure the 'hex' argument. This way we don't
have to care about how Leaflet passes the object to the callback. */
function selectPlaneCallback(hex) {
return function() {
return selectPlane(hex);
}
}
function refreshGeneralInfo() {
var i = document.getElementById('geninfo');
i.innerHTML = NumPlanes+' planes on screen.';
}
function refreshSelectedInfo() {
var i = document.getElementById('selinfo');
var p = Planes[Selected];
if (!p) return;
var html = 'ICAO: '+p.hex+'<br>';
if (p.flight.length) {
html += '<b>'+p.flight+'</b><br>';
}
html += 'Altitude: '+p.altitude+' feet<br>';
html += 'Speed: '+p.speed+' knots<br>';
html += 'Coordinates: '+p.lat+', '+p.lon+'<br>';
i.innerHTML = html;
}
function fetchData() {
$.getJSON('/data.json', function(data) {
var stillhere = {}
for (var j=0; j < data.length; j++) {
var plane = data[j];
var marker = null;
stillhere[plane.hex] = true;
plane.flight = $.trim(plane.flight);
if (Planes[plane.hex]) {
var myplane = Planes[plane.hex];
marker = myplane.marker;
marker.setLatLng([plane.lat,plane.lon]);
marker.setIcon(getIconForPlane(plane));
myplane.altitude = plane.altitude;
myplane.speed = plane.speed;
myplane.lat = plane.lat;
myplane.lon = plane.lon;
myplane.track = plane.track;
myplane.flight = plane.flight;
if (myplane.hex == Selected)
refreshSelectedInfo();
} else {
var icon = getIconForPlane(plane);
var marker = L.marker([plane.lat, plane.lon], {icon: icon}).addTo(Map);
var hex = plane.hex;
marker.on('click',selectPlaneCallback(plane.hex));
plane.marker = marker;
marker.planehex = plane.hex;
Planes[plane.hex] = plane;
}
// FIXME: Set the title
// if (plane.flight.length == 0)
// marker.setTitle(plane.hex)
// else
// marker.setTitle(plane.flight+' ('+plane.hex+')')
}
NumPlanes = data.length;
/* Remove idle planes. */
for (var p in Planes) {
if (!stillhere[p]) {
Map.removeLayer(Planes[p].marker);
delete Planes[p];
}
}
});
}
function initialize() {
Map = L.map('map_canvas').setView([37.0, 13.0], 8);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: 'Map data © <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
maxZoom: 18,
id: 'mapbox/streets-v11',
accessToken: 'your.mapbox.access.token'
}).addTo(Map);
/* Setup our timer to poll from the server. */
window.setInterval(function() {
fetchData();
refreshGeneralInfo();
}, 100);
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:80%; height:100%"></div>
<div id="info">
<div>
<h1>Dump1090</h1>
<p id="geninfo"></p>
<p id="selinfo">Click on a plane for info.</p>
</div>
</div>
</body>
</html>