Interpolate stop times for non timing point stops
[bus.git] / busui / common.inc.php
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<?php
date_default_timezone_set('Australia/ACT');
$APIurl = "http://localhost:8765";
error_reporting(E_ALL ^ E_NOTICE);
 // you have to open the session to be able to modify or remove it 
 session_start(); 
 
 
function isDebug()
{
    return $_SERVER['SERVER_NAME'] == "localhost" || $_SERVER['SERVER_NAME'] == "127.0.0.1" || !$_SERVER['SERVER_NAME'];
}
 
function debug($msg) {
    if (isDebug()) echo "<!-- $msg -->";
}
function isFastDevice() {
    return true;
}
 
function include_header($pageTitle, $opendiv = true, $geolocate = false) {
 // this starts the session 
 session_start(); 
 
    // if (isDebug()) // set php error level high
    echo '
<!DOCTYPE html> 
<html> 
        <head> 
        <title>busness time - '.$pageTitle.'</title> 
        ';
         if (isDebug()) echo '<link rel="stylesheet"  href="css/jquery-mobile-1.0a3.css" />
         <script type="text/javascript" src="js/jquery-1.5.js"></script>
        <script type="text/javascript" src="js/jquery-mobile-1.0a3.js"></script>';
         else echo '<link rel="stylesheet"  href="http://code.jquery.com/mobile/1.0a3/jquery.mobile-1.0a3.css" />
        <script type="text/javascript" src="http://code.jquery.com/jquery-1.5.js"></script>
        <script type="text/javascript" src="http://code.jquery.com/mobile/1.0a3/jquery.mobile-1.0a3.js"></script>';
echo '
<link rel="stylesheet"  href="css/jquery.ui.datepicker.mobile.css" />
        <script> 
                //reset type=date inputs to text
                $( document ).bind( "mobileinit", function(){
                        $.mobile.page.prototype.options.degradeInputs.date = true;
                });     
        </script> 
        <script src="js/jQuery.ui.datepicker.js"></script> 
        <script src="js/jquery.ui.datepicker.mobile.js"></script> 
     <style type="text/css">
     .ui-navbar {
     padding-bottom: 18px;
     width: 100%;
     }
</style>
<meta name="apple-mobile-web-app-capable" content="yes" />
 <meta name="apple-mobile-web-app-status-bar-style" content="black" />
 <link rel="apple-touch-startup-image" href="startup.png" />
 <link rel="apple-touch-icon" href="apple-touch-icon.png" />';
 if ($geolocate) {
echo "<script>
 
function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ \"=\" +escape(value)+
((expiredays==null) ? \"\" : \";expires=\"+exdate.toUTCString());
}
 
function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + \"=\");
  if (c_start!=-1)
    {
    c_start=c_start + c_name.length+1;
    c_end=document.cookie.indexOf(\";\",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    }
  }
return \"\";
}
 
function success(position) {
$('#geolocate').val(position.coords.latitude+','+position.coords.longitude);
setCookie('geolocate',position.coords.latitude+','+position.coords.longitude,1);
}
 
function error(msg) {
 console.log(msg);
}
 
if (navigator.geolocation) {
  navigator.geolocation.getCurrentPosition(success, error);
}
 
</script> ";
 }
echo '</head> 
<body> 
 ';
if ($opendiv) echo '<div data-role="page"> 
 
        <div data-role="header"> 
                <h1>'.$pageTitle.'</h1>
        </div><!-- /header -->
        <div data-role="content"> ';
}
 
function include_footer()
{
    echo '</div>';
}
 
$service_periods = Array ('sunday','saturday','weekday');
 
function service_period()
{
if (isset($_SESSION['service_period'])) return $_SESSION['service_period'];
 
switch (date('w')){
 
case 0:
        return 'sunday';
case 6:
        return 'saturday';
default:
        return 'weekday';
}       
}
 
function remove_spaces($string)
{
    return str_replace(' ','',$string);
}
 
function midnight_seconds()
{
// from http://www.perturb.org/display/Perlfunc__Seconds_Since_Midnight.html
if (isset($_SESSION['time'])) {
        $time = mkdate($_SESSION['time']);
        return (date("G",$time) * 3600) + (date("i",$time) * 60) + date("s",$time);
    }
   return (date("G") * 3600) + (date("i") * 60) + date("s");
}
 
function midnight_seconds_to_time($seconds)
{
if ($seconds > 0) {
        $midnight = mktime (0, 0, 0, date("n"), date("j"), date("Y"));
        return date("h:ia",$midnight+$seconds);
} else {
return "";
}
}
function getPage($url)
{
    $ch = curl_init($url);
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt( $ch, CURLOPT_HEADER, 0 );
          curl_setopt($ch,CURLOPT_TIMEOUT,30); 
$page = curl_exec($ch);
 if(curl_errno($ch)) echo "<font color=red> Database temporarily unavailable: ".curl_errno($ch)." ".curl_error($ch)."</font>";
curl_close($ch);
return $page;
}
function array_flatten($a,$f=array()){
  if(!$a||!is_array($a))return '';
  foreach($a as $k=>$v){
    if(is_array($v))$f=array_flatten($v,$f);
    else $f[$k]=$v;
  }
  return $f;
}
 
function staticmap($mapPoints, $zoom = 0, $markerImage = "iconb")
{
$width = 300;
$height = 300;
$metersperpixel[9]=305.492*$width;
$metersperpixel[10]=152.746*$width;
$metersperpixel[11]=76.373*$width;
$metersperpixel[12]=38.187*$width;
$metersperpixel[13]=19.093*$width;
$metersperpixel[14]=9.547*$width;
$metersperpixel[15]=4.773*$width;
$metersperpixel[16]=2.387*$width;
// $metersperpixel[17]=1.193*$width;
$center = "";
$markers = "";
$minlat = 999;
$minlon = 999;
$maxlat = 0;
$maxlon = 0;
 
    if (sizeof($mapPoints) < 1) return "map error";
    if (sizeof($mapPoints) === 1) {
         if ($zoom == 0) $zoom = 14;
            $markers .= "{$mapPoints[0][0]},{$mapPoints[0][1]},$markerimage";
            $center = "{$mapPoints[0][0]},{$mapPoints[0][1]}";        
    } else {
        foreach ($mapPoints as $index => $mapPoint) {
            $markers .= $mapPoint[0].",".$mapPoint[1].",".$markerImage.($index+1);
            if ($index+1 != sizeof($mapPoints)) $markers .= "|";
            if ($mapPoint[0] < $minlat) $minlat = $mapPoint[0];
            if ($mapPoint[0] > $maxlat) $maxlat = $mapPoint[0];
            if ($mapPoint[1] < $minlon) $minlon = $mapPoint[1];
            if ($mapPoint[1] > $maxlon) $maxlon = $mapPoint[1];
            $totalLat += $mapPoint[0];
            $totalLon += $mapPoint[1];
        }
        if ($zoom == 0) {
            $mapwidthinmeters = distance($minlat,$minlon,$minlat,$maxlon);
            foreach (array_reverse($metersperpixel,true) as $zoomLevel => $maxdistance)
            {
                if ($zoom == 0 && $mapwidthinmeters < ($maxdistance + 50)) $zoom = $zoomLevel;
            }
        }
       $center = $totalLat/sizeof($mapPoints).",".$totalLon/sizeof($mapPoints);
    }
    
    return '<img src="staticmaplite/staticmap.php?center='.$center.'&zoom='.$zoom.'&size='.$width.'x'.$height.'&maptype=mapnik&markers='.$markers.'" width='.$width.' height='.$height.'>';
}
 
function distance($lat1, $lng1, $lat2, $lng2)
{
        $pi80 = M_PI / 180;
        $lat1 *= $pi80;
        $lng1 *= $pi80;
        $lat2 *= $pi80;
        $lng2 *= $pi80;
 
        $r = 6372.797; // mean radius of Earth in km
        $dlat = $lat2 - $lat1;
        $dlng = $lng2 - $lng1;
        $a = sin($dlat / 2) * sin($dlat / 2) + cos($lat1) * cos($lat2) * sin($dlng / 2) * sin($dlng / 2);
        $c = 2 * atan2(sqrt($a), sqrt(1 - $a));
        $km = $r * $c;
 
        return $km * 1000;
}
 
function decodePolylineToArray($encoded)
{
// source: http://latlongeeks.com/forum/viewtopic.php?f=4&t=5
  $length = strlen($encoded);
  $index = 0;
  $points = array();
  $lat = 0;
  $lng = 0;
 
  while ($index < $length)
  {
    // Temporary variable to hold each ASCII byte.
    $b = 0;
 
    // The encoded polyline consists of a latitude value followed by a
    // longitude value.  They should always come in pairs.  Read the
    // latitude value first.
    $shift = 0;
    $result = 0;
    do
    {
      // The `ord(substr($encoded, $index++))` statement returns the ASCII
      //  code for the character at $index.  Subtract 63 to get the original
      // value. (63 was added to ensure proper ASCII characters are displayed
      // in the encoded polyline string, which is `human` readable)
      $b = ord(substr($encoded, $index++)) - 63;
 
      // AND the bits of the byte with 0x1f to get the original 5-bit `chunk.
      // Then left shift the bits by the required amount, which increases
      // by 5 bits each time.
      // OR the value into $results, which sums up the individual 5-bit chunks
      // into the original value.  Since the 5-bit chunks were reversed in
      // order during encoding, reading them in this way ensures proper
      // summation.
      $result |= ($b & 0x1f) << $shift;
      $shift += 5;
    }
    // Continue while the read byte is >= 0x20 since the last `chunk`
    // was not OR'd with 0x20 during the conversion process. (Signals the end)
    while ($b >= 0x20);
 
    // Check if negative, and convert. (All negative values have the last bit
    // set)
    $dlat = (($result & 1) ? ~($result >> 1) : ($result >> 1));
 
    // Compute actual latitude since value is offset from previous value.
    $lat += $dlat;
 
    // The next values will correspond to the longitude for this point.
    $shift = 0;
    $result = 0;
    do
    {
      $b = ord(substr($encoded, $index++)) - 63;
      $result |= ($b & 0x1f) << $shift;
      $shift += 5;
    }
    while ($b >= 0x20);
 
    $dlng = (($result & 1) ? ~($result >> 1) : ($result >> 1));
    $lng += $dlng;
 
    // The actual latitude and longitude values were multiplied by
    // 1e5 before encoding so that they could be converted to a 32-bit
    // integer representation. (With a decimal accuracy of 5 places)
    // Convert back to original values.
    $points[] = array($lat * 1e-5, $lng * 1e-5);
  }
 
  return $points;
}
 
function object2array($object) {
    if (is_object($object)) {
        foreach ($object as $key => $value) {
            $array[$key] = $value;
        }
    }
    else {
        $array = $object;
    }
    return $array;
}
 
function geocode($query, $giveOptions) {
       $url = "http://geocoding.cloudmade.com/daa03470bb8740298d4b10e3f03d63e6/geocoding/v2/find.js?query=".$query."&bbox=-35.5,149.00,-35.15,149.1930&return_location=true&bbox_only=true";
      $contents = json_decode(getPage($url));
      if ($giveOptions) return $contents->features;
      elseif (isset($contents->features[0]->centroid)) return $contents->features[0]->centroid->coordinates[0].",".$contents->features[0]->centroid->coordinates[1];
      else return "";
}
 
function reverseGeocode($lat,$lng) {
      $url = "http://geocoding.cloudmade.com/daa03470bb8740298d4b10e3f03d63e6/geocoding/v2/find.js?around=".$lat.",".$lng."&distance=closest&object_type=road";
      $contents = json_decode(getPage($url));
      return $contents->features[0]->properties->name;
&#