From e9e07e077894fd1b2eee3556fb95bfd2c24cf720 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Sun, 27 Jan 2013 01:37:05 +0100
Subject: [PATCH] Improved Google map interace: select planes and see details.

---
 dump1090.c |  6 ++--
 gmap.html  | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 86 insertions(+), 5 deletions(-)

diff --git a/dump1090.c b/dump1090.c
index 6e31c57..ee11512 100644
--- a/dump1090.c
+++ b/dump1090.c
@@ -2142,8 +2142,10 @@ char *aircraftsToJson(int *len) {
         if (a->lat != 0 && a->lon != 0) {
             l = snprintf(p,buflen,
                 "{\"hex\":\"%s\", \"flight\":\"%s\", \"lat\":%f, "
-                "\"lon\":%f, \"altitude\":%d, \"track\":%d},\n",
-                a->hexaddr, a->flight, a->lat, a->lon, a->altitude, a->track);
+                "\"lon\":%f, \"altitude\":%d, \"track\":%d, "
+                "\"speed\":%d},\n",
+                a->hexaddr, a->flight, a->lat, a->lon, a->altitude, a->track,
+                a->speed);
             p += l; buflen -= l;
             /* Resize if needed. */
             if (buflen < 256) {
diff --git a/gmap.html b/gmap.html
index a1c9d38..9d8cf3d 100644
--- a/gmap.html
+++ b/gmap.html
@@ -7,6 +7,30 @@
       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>
@@ -18,16 +42,19 @@
     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);
         return {
-            strokeWeight: 1,
+            strokeWeight: (selected ? 2 : 1),
             path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW,
             scale: 5,
             fillColor: 'rgb('+r+','+g+','+b+')',
@@ -36,6 +63,39 @@
         };
     }
 
+    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+' feets<br>';
+        html += 'Speed: '+p.speed+' knots<br>';
+        html += 'Coordiates: '+p.lat+', '+p.lon+'<br>';
+        i.innerHTML = html;
+    }
+
     function fetchData() {
         $.getJSON('/data.json', function(data) {
             var stillhere = {}
@@ -52,6 +112,12 @@
                     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;
+                    if (myplane.hex == Selected)
+                        refreshSelectedInfo();
                 } else {
                     marker = new google.maps.Marker({
                         position: new google.maps.LatLng(plane.lat, plane.lon),
@@ -59,13 +125,18 @@
                         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) {
@@ -74,7 +145,6 @@
                     delete Planes[p];
                 }
             }
-
         });
     }
 
@@ -89,11 +159,20 @@
         /* 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:100%; height:100%"></div>
+    <div id="map_canvas" style="width:80%; height:100%"></div>
+    <div id="info">
+      <div>
+        <h1>Dump1090 ver 0.3</h1>
+        <p id="geninfo"></p>
+        <p id="selinfo">Click on a plane for info.</p>
+      </div>
+    </div>
   </body>
 </html>