live-sat-geojson.php

   1 <?php
   2 require_once('require/class.Connection.php');
   3 require_once('require/class.Common.php');
   4 require_once('require/class.Satellite.php');
   5 date_default_timezone_set('UTC');
   6 //$begintime = microtime(true);
   7 $Satellite = new Satellite();
   8 $Common = new Common();
   9
  10 if (isset($_GET['download'])) {
  11         if ($_GET['download'] == "true")
  12         {
  13                 header('Content-disposition: attachment; filename="flightairmap-sat.json"');
  14         }
  15 }
  16 $history = urldecode(filter_input(INPUT_GET,'history',FILTER_SANITIZE_STRING));
  17 header('Content-Type: text/javascript');
  18
  19 $begintime = microtime(true);
  20 //$sqltime = round(microtime(true)-$begintime,2);
  21
  22 $spotter_array = array();
  23 if (isset($_COOKIE['sattypes']) && $_COOKIE['sattypes'] != '') {
  24         $sattypes = explode(',',$_COOKIE['sattypes']);
  25         foreach ($sattypes as $sattype) {
  26                 //$spotter_array = array_merge($Satellite->position_all_type($sattype,$timeb-$globalLiveInterval,$timeb),$spotter_array);
  27                 $spotter_array = array_merge($Satellite->position_all_type($sattype),$spotter_array);
  28         }
  29 }
  30
  31 if ((isset($_COOKIE['displayiss']) && $_COOKIE['displayiss'] == 'true') || !isset($_COOKIE['displayiss'])) {
  32         $spotter_array[] = $Satellite->position('ISS (ZARYA)');
  33         $spotter_array[] = $Satellite->position('TIANGONG 1');
  34         $spotter_array[] = $Satellite->position('TIANGONG-2');
  35 }
  36
  37 //$spotter_array = array_unique($spotter_array,SORT_REGULAR);
  38 //print_r($spotter_array);
  39 $sqltime = round(microtime(true)-$begintime,2);
  40
  41 $output = '{"type":"FeatureCollection","features":[';
  42 if (!empty($spotter_array) && is_array($spotter_array))
  43 {
  44         $last_name = '';
  45         $coordinatearray = '';
  46         $timearray = array();
  47         foreach($spotter_array as $spotter_item)
  48         {
  49                 $output_data = '';
  50                 $output_data .= '{"type":"Feature","properties":{';
  51                 $output_data .= '"famsatid":"'.$spotter_item['name'].'",';
  52                 $output_data .= '"name":"'.urlencode($spotter_item['name']).'",';
  53                 $output_data .= '"callsign":"'.$spotter_item['name'].'",';
  54                 $output_data .= '"type":"satellite",';
  55                 if ($spotter_item['name'] == 'ISS (ZARYA)') {
  56                         $output_data .= '"aircraft_shadow":"iss.png",';
  57                 } elseif ($spotter_item['name'] == 'TIANGONG 1' || $spotter_item['name'] == 'TIANGONG-2') {
  58                         $output_data .= '"aircraft_shadow":"tiangong1.png",';
  59                 } else {
  60                         $output_data .= '"aircraft_shadow":"defaultsat.png",';
  61                 }
  62                 $output_data .= '"altitude":0,';
  63                 $output_data .= '"sqt":'.$sqltime.',';
  64                 $nextlatlon = $Satellite->position($spotter_item['name'],time()+$globalMapRefresh+20);
  65                 $nextlat = $nextlatlon['latitude'];
  66                 if (abs($nextlat-$spotter_item['latitude']) > 90) {
  67                         if ($spotter_item['latitude'] < 0) $nexlat = -90;
  68                         else $nexlat = 90;
  69                 }
  70                 $nextlon = $nextlatlon['longitude'];
  71                 if (abs($nextlon-$spotter_item['longitude']) > 180) {
  72                         if ($spotter_item['longitude'] < 0) $nextlon = -180;
  73                         else $nextlon = 180;
  74                 }
  75                 $output_data .= '"nextlatlon":['.$nextlat.','.$nextlon.']},';
  76                 //$output_data .= '"heading":"'.$Common->getHeading($spotter_item['latitude'],$spotter_item['longitude'],$nextlatlon['latitude'],$nextlatlon['longitude']).'",';
  77                 $output_data .= '"geometry":{"type":"Point","coordinates":[';
  78                 $output_data .= $spotter_item['longitude'].','.$spotter_item['latitude'];
  79                 $output_data .= ']}},';
  80                 $output .= $output_data;
  81                 if ($history == $spotter_item['name']) {
  82                         $spotter_history_array = $Satellite->position($spotter_item['name'],time()-6000,time());
  83                         $spotter_history_array = array_reverse($spotter_history_array);
  84                         $output_history = '{"type": "Feature","properties": {"callsign": "'.$spotter_item['name'].'","type": "history"},"geometry": {"type": "LineString","coordinates": [';
  85                         foreach ($spotter_history_array as $key => $spotter_history) {
  86                                 if ((isset($previous_lon) && abs($previous_lon-$spotter_history['longitude']) > 180) || (isset($previous_lat) && abs($previous_lat-$spotter_history['latitude']) > 90)) {
  87                                         break;
  88                                 }
  89                                 $output_history .= '[';
  90                                 $output_history .=  $spotter_history['longitude'].', ';
  91                                 $output_history .=  $spotter_history['latitude'];
  92                                 $output_history .= '],';
  93                                 $previous_lon = $spotter_history['longitude'];
  94                                 $previous_lat = $spotter_history['latitude'];
  95                         }
  96                         $output_history = substr($output_history,0,-1);
  97                         $output_history .= ']}},';
  98                         $output .= $output_history;
  99                 }
 100         }
 101 }
 102 if (isset($output_data)) $output = substr($output,0,-1);
 103 $output .= ']}';
 104 print $output;
 105 ?>