Add trip planner, fix weekend routes appearing on weekdays in network 10
[bus.git] / busui / common.inc.php
blob:a/busui/common.inc.php -> blob:b/busui/common.inc.php
--- a/busui/common.inc.php
+++ b/busui/common.inc.php
@@ -91,18 +91,124 @@
 {
 $width = 300;
 $height = 300;
+$zoom = 0;
+$center = "";
+$markers = "";
+
     if (sizeof($mapPoints) < 1) return "";
-    if (sizeof($mapPoints) === 1) $center = "{$mapPoints[0][0]},{$mapPoints[0][1]}";
-    if (sizeof($mapPoints) > 1) $center = "{$mapPoints[0][0]},{$mapPoints[0][1]}"; //TODO average points
-    $markers = "";
-    foreach ($mapPoints as $index => $mapPoint) {
-        if (sizeof($mapPoints) === 1) {
+    if (sizeof($mapPoints) === 1) {
+         $zoom = 14;
             $markers .= $mapPoint[0].",".$mapPoint[1].",ol-marker";
-        } else {
+            $center = "{$mapPoints[0][0]},{$mapPoints[0][1]}";        
+    } else {
+        foreach ($mapPoints as $index => $mapPoint) {
             $markers .= $mapPoint[0].",".$mapPoint[1].",lightblue".($index+1);
+            if ($index+1 != sizeof($mapPoints)) $markers .= "|";
+            $totalLat += $mapPoint[0];
+            $totalLon += $mapPoint[1];
         }
-    }
-    return '<img src="staticmaplite/staticmap.php?center='.$center.'&zoom=14&size='.$width.'x'.$height.'&maptype=mapnik&markers='.$markers.'" width=$width height=$height>';
+        $zoom = 11;
+       $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='.$height.'>';
+}
+
+function decodePolylineToArray($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;
+      else return $contents->features[0]->centroid->coordinates[0].",".$contents->features[0]->centroid->coordinates[1];
+}
+
+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;
 }
 ?>