Esempio n. 1
0
 /**
  * @param $id
  * @return bool|\stdClass
  */
 function get_activity($id)
 {
     $map_return = new stdClass();
     $activity = $this->strava_get('/activities/' . $id);
     if (empty($activity->map->polyline)) {
         return FALSE;
     } else {
         $points = decodePolylineToArray($activity->map->polyline);
         if (empty($points)) {
             return FALSE;
         }
         $businesses = array();
         $last_api_point = null;
         // Collect businesses along the route every YELP_METRES_PER_CALL metres.
         foreach ($points as $point) {
             if (empty($last_api_point) || $this->haversineGreatCircleDistance($last_api_point, $point) > self::YELP_METRES_PER_CALL) {
                 $last_api_point = $point;
                 $locations = $this->get_locations($point);
                 // Build an array of unique business locations.
                 if (!empty($locations) && !empty($locations->businesses)) {
                     foreach ($locations->businesses as $business) {
                         if (empty($businesses[$business->id])) {
                             $businesses[$business->id] = $business;
                         }
                     }
                 }
             }
         }
         // For each point on the route, check the distance to each business and store
         // the lowest distance for each.
         foreach ($points as $point) {
             foreach ($businesses as &$business) {
                 $distance = $this->haversineGreatCircleDistance(array($business->location->coordinate->latitude, $business->location->coordinate->longitude), $point);
                 if (empty($business->stracof_distance) || $distance < $business->stracof_distance) {
                     $business->stracof_distance = round($distance);
                 }
             }
         }
         $total_points = 0;
         // Calculate distance under YELP_MAX_METRES_FOR_POINTS and multiply by points
         // value minus YELP_NEUTRAL_RATING to give a positive or negative score per business.
         foreach ($businesses as &$business) {
             $distance = self::YELP_MAX_METRES_FOR_POINTS - $business->stracof_distance;
             if ($distance > 0 && $business->rating > 0) {
                 $points = $business->rating - self::YELP_NEUTRAL_RATING;
                 $business->stracof_points = round($points * $distance);
                 $total_points += $business->stracof_points;
             }
         }
         // Return the polyline, total and array values for businesses, as it won't
         // be an array in JS if we leave the array keys in place.
         $map_return->polyline = $activity->map->polyline;
         $map_return->businesses = array_values($businesses);
         $map_return->total_points = $total_points;
     }
     return $map_return;
 }
Esempio n. 2
0
 * The encoding algorithm is detailed here:
 * http://code.google.com/apis/maps/documentation/polylinealgorithm.html
 *
 * This function is based off of Mark McClure's JavaScript polyline decoder
 * (http://facstaff.unca.edu/mcmcclur/GoogleMaps/EncodePolyline/decode.js)
 * which was in turn based off Google's own implementation.
 *
 * This function assumes a validly encoded polyline.  The behaviour of this
 * function is not specified when an invalid expression is supplied.
 *
 * @param String $encoded the encoded polyline.
 * @return Array an Nx2 array with the first element of each entry containing
 *  the latitude and the second containing the longitude of the
 *  corresponding point.
 */
$arr = decodePolylineToArray('zebeCzes|Gx@Ma@oCs@qEe@qCe@wC}@yFiAmHw@uFe@wCe@oCPSLiCTmCTyCd@mEVsDn@_Gd@eCLaCcB_ByEuCgCoD{@qCQwDLcEl@aFx@uDxAkDXmBq@wEeA_GgAeF{ATwBwCa@qAqJuLmG{IaBaCwB{BUw@sAeBc@kIi@uJUwCiA_D_AkFq@gAi@qDoAcAq@TgA[');
print_r($arr);
function decodePolylineToArray($encoded)
{
    $length = strlen($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;