Esempio n. 1
0
 /**
  * Returns elevation data for points along a path.
  * 
  * @param array $points			Array containing data points with indices [lat,lng]
  * @param int $points_per_mile	Number of data points per mile
  * @return array				Elevation data as array with form [distance, elevation]
  */
 public static function getElevationForPath($points, $points_per_mile = 5)
 {
     if (!is_array($points)) {
         return false;
     }
     $mark_dist = 1 / $points_per_mile;
     $prev_dist = 0;
     $markers = array();
     $count = count($points);
     for ($i = 0; $i < $count - 1; $i++) {
         $point1 = $points[$i];
         $point2 = $points[$i + 1];
         $dist = self::_getLatLngDistance($point1, $point2);
         $avail_dist = $prev_dist + $dist;
         while ($avail_dist >= $mark_dist) {
             $cover_dist = $prev_dist > 0 ? $mark_dist - $prev_dist : $mark_dist;
             $scale = $cover_dist / $dist;
             $lat = $point1["lat"] + $scale * ($point2["lat"] - $point1["lat"]);
             $lng = $point1["lng"] + $scale * ($point2["lng"] - $point1["lng"]);
             $markers[] = array("lat" => $lat, "lng" => $lng, "dist" => (count($markers) + 1) * $mark_dist);
             $avail_dist -= $mark_dist;
             $prev_dist = 0;
         }
         $prev_dist = $avail_dist;
     }
     $elevations = array();
     foreach ($markers as $marker) {
         if ($elevation = Elevation::getElevation($marker["lat"], $marker["lng"])) {
             $elevations[] = array($marker["dist"], $elevation);
         } else {
             return false;
         }
     }
     return $elevations;
 }
Esempio n. 2
0
 /**
  * This test is to help determine the parameters for the nearest
  * elevation search.
  *
  * @return unknown_type
  */
 public function testGetNearestReturnCount()
 {
     $lat = 39.90574640039131;
     $lng = -86.18072318611667;
     $points = 3;
     $data = Elevation::_getNearestElevations($lat, $lng, 3);
     //make sure we have data
     $this->assertNotEqual(false, $data);
     //make sure we have enough points
     // TODO: use a supported assertion
     //$this->assertGreaterThanOrEqual($points, count($data));
     //make sure we do not have too many
     //$this->assertLessThan(6, count($data));
 }
Esempio n. 3
0
 public function action_elevation_add_packed()
 {
     if ($_FILES["packed_hdr"]) {
         move_uploaded_file($_FILES["packed_hdr"]["tmp_name"], SYSTEM_ROOT . "/elev_packed.hdr");
     }
     if ($_FILES["packed_flt"]) {
         move_uploaded_file($_FILES["packed_flt"]["tmp_name"], SYSTEM_ROOT . "/elev_packed.flt");
     }
     $region = array_safe($_POST, "region_name", "Elevation data");
     Elevation::addElevationToDatabase(SYSTEM_ROOT . "/elev_packed", 1, $region);
     unlink(SYSTEM_ROOT . "/elev_packed.hdr");
     unlink(SYSTEM_ROOT . "/elev_packed.flt");
     Notification::add("Elevation data has been added");
     Page::redirect("/admin/elevation");
 }
Esempio n. 4
0
 /**
  * Function is called to update the elevation data of the route.
  * 
  * @return int|bool	Number of rows affected. false indicates no data nearby.
  */
 public function _updateElevationData()
 {
     $points = json_decode($this->points);
     if (!isset($points->points)) {
         return false;
     }
     $points = $points->points;
     $points = $this->_decodePolylineToArray($points);
     if (($elevations = Elevation::getElevationForPath($points)) === false) {
         return false;
     }
     $this->elevation = json_encode($elevations);
     $stmt = Database::getDB()->prepare("\r\n\t\t\tUPDATE routes\r\n\t\t\tSET\r\n\t\t\t\tr_elevation = ?\r\n\t\t\tWHERE \r\n\t\t\t\tr_id = ?\r\n\t\t");
     $stmt->bind_param("si", $this->elevation, $this->id);
     $stmt->execute();
     $stmt->store_result();
     $rows = $stmt->affected_rows;
     $stmt->close();
     return $rows;
 }