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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" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#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="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js">
</script>
<script type="text/javascript"
src="https://maps.googleapis.com/maps/api/js?sensor=true">
</script>
<script type="text/javascript">
Map=null;
CenterLat = 0;
CenterLon = 0;
if (navigator.geolocation){
navigator.geolocation.getCurrentPosition(function(position){
CenterLat = position.coords.latitude;
CenterLon = position.coords.longitude;
},function(fail){},{timeout:0, maximumAge:100000});
}
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);
return {
strokeWeight: (selected ? 2 : 1),
path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW,
scale: 5,
fillColor: 'rgb('+r+','+g+','+b+')',
fillOpacity: 0.9,
rotation: plane.track
};
}
function selectPlane() {
if (!Planes[this.planehex]) return;
var old = Selected;
Selected = this.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();
}
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;
var icon = marker.getIcon();
var newpos = new google.maps.LatLng(plane.lat, plane.lon);
marker.setPosition(newpos);
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 {
marker = new google.maps.Marker({
position: new google.maps.LatLng(plane.lat, plane.lon),
map: Map,
icon: getIconForPlane(plane)
});
plane.marker = marker;
marker.planehex = plane.hex;
Planes[plane.hex] = plane;
/* Trap clicks for this marker. */
google.maps.event.addListener(marker, 'click', selectPlane);
}
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]) {
Planes[p].marker.setMap(null);
delete Planes[p];
}
}
});
}
function initialize() {
var mapOptions = {
center: new google.maps.LatLng(CenterLat,CenterLon),
zoom: 3,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
Map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
/* Setup our timer to poll from the server. */
window.setInterval(function() {
fetchData();
refreshGeneralInfo();
}, 1000);
}
</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>