1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | <?php function getTrip($tripID) { global $conn; $query = "Select * from trips join routes on trips.route_id = routes.route_id where trip_id = '$tripID' LIMIT 1"; debug($query, "database"); $result = pg_query($conn, $query); if (!$result) { databaseError(pg_result_error($result)); return Array(); } return pg_fetch_assoc($result); } function getTripShape() { /* def handle_json_GET_tripstopTimes(self, params): schedule = self.server.schedule try: trip = schedule.GetTrip(params.get('trip')) except KeyError: # if a non-existent trip is searched for, the return nothing return time_stops = trip.GetTimeInterpolatedStops() stops = [] times = [] for arr,ts,is_timingpoint in time_stops: stops.append(StopToTuple(ts.stop)) times.append(arr) return [stops, times] def handle_json_GET_tripshape(self, params): schedule = self.server.schedule try: trip = schedule.GetTrip(params.get('trip')) except KeyError: # if a non-existent trip is searched for, the return nothing return points = [] if trip.shape_id: shape = schedule.GetShape(trip.shape_id) for (lat, lon, dist) in shape.points: points.append((lat, lon)) else: time_stops = trip.GetTimeStops() for arr,dep,stop in time_stops: points.append((stop.stop_lat, stop.stop_lon)) return points*/ } function getTimeInterpolatedTrip($tripID, $range = "") { global $conn; $query = "SELECT stop_times.trip_id,arrival_time,stop_times.stop_id,stop_lat,stop_lon,stop_name,stop_code, stop_sequence,service_id,trips.route_id,route_short_name,route_long_name FROM stop_times join trips on trips.trip_id = stop_times.trip_id join routes on trips.route_id = routes.route_id join stops on stops.stop_id = stop_times.stop_id WHERE trips.trip_id = '$tripID' $range ORDER BY stop_sequence"; debug($query, "database"); $result = pg_query($conn, $query); if (!$result) { databaseError(pg_result_error($result)); return Array(); } $stopTimes = pg_fetch_all($result); $cur_timepoint = Array(); $next_timepoint = Array(); $distance_between_timepoints = 0.0; $distance_traveled_between_timepoints = 0.0; $rv = Array(); foreach ($stopTimes as $i => $stopTime) { if ($stopTime['arrival_time'] != "") { // is timepoint $cur_timepoint = $stopTime; $distance_between_timepoints = 0.0; $distance_traveled_between_timepoints = 0.0; if ($i + 1 < sizeof($stopTimes)) { $k = $i + 1; $distance_between_timepoints += distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]); while ($stopTimes[$k]["arrival_time"] == "" && $k + 1 < sizeof($stopTimes)) { $k += 1; //echo "k".$k; $distance_between_timepoints += distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]); } $next_timepoint = $stopTimes[$k]; $rv[] = $stopTime; } } else { // is untimed point //echo "i".$i; $distance_traveled_between_timepoints += distance($stopTimes[$i - 1]["stop_lat"], $stopTimes[$i - 1]["stop_lon"], $stopTimes[$i]["stop_lat"], $stopTimes[$i]["stop_lon"]); //echo "$distance_traveled_between_timepoints / $distance_between_timepoints<br>"; $distance_percent = $distance_traveled_between_timepoints / $distance_between_timepoints; if ($next_timepoint["arrival_time"] != "") { $total_time = strtotime($next_timepoint["arrival_time"]) - strtotime($cur_timepoint["arrival_time"]); //echo strtotime($next_timepoint["arrival_time"])." - ".strtotime($cur_timepoint["arrival_time"])."<br>"; $time_estimate = ($distance_percent * $total_time) + strtotime($cur_timepoint["arrival_time"]); $stopTime["arrival_time"] = date("H:i:s", $time_estimate); } else { $stopTime["arrival_time"] = $cur_timepoint["arrival_time"]; } $rv[] = $stopTime; //var_dump($rv); } } return $rv; } function getTimeInterpolatedTripAtStop($tripID, $stop_sequence) { global $conn; // limit interpolation to between nearest actual points. $prevTimePoint = pg_fetch_assoc(pg_query($conn," SELECT trip_id,stop_id, stop_sequence FROM stop_times WHERE trip_id = '$tripID' and stop_sequence < $stop_sequence and stop_times.arrival_time IS NOT NULL ORDER BY stop_sequence DESC LIMIT 1")); $nextTimePoint = pg_fetch_assoc(pg_query($conn," SELECT trip_id,stop_id, stop_sequence FROM stop_times WHERE trip_id = '$tripID' and stop_sequence > $stop_sequence and stop_times.arrival_time IS NOT NULL ORDER BY stop_sequence LIMIT 1")); $range = "AND stop_sequence >= '{$prevTimePoint['stop_sequence']}' AND stop_sequence <= '{$nextTimePoint['stop_sequence']}'"; foreach (getTimeInterpolatedTrip($tripID,$range) as $tripStop) { if ($tripStop['stop_sequence'] == $stop_sequence) return $tripStop; } return Array(); } function getTripStartTime($tripID) { global $conn; $query = "Select * from stop_times where trip_id = '$tripID' AND arrival_time IS NOT NULL AND stop_sequence = '1'"; debug($query, "database"); $result = pg_query($conn, $query); if (!$result) { databaseError(pg_result_error($result)); return Array(); } $r = pg_fetch_assoc($result); return $r['arrival_time']; } function viaPointNames($tripid, $stop_sequence = "") { global $conn; $query = "SELECT stop_name FROM stop_times join stops on stops.stop_id = stop_times.stop_id WHERE stop_times.trip_id = '$tripid' ".($stop_sequence != "" ? "AND stop_sequence > '$stop_sequence'" : ""). "AND substr(stop_code,1,2) != 'Wj' ORDER BY stop_sequence"; debug($query, "database"); $result = pg_query($conn, $query); if (!$result) { databaseError(pg_result_error($result)); return Array(); } $pointNames = pg_fetch_all($result); return r_implode(", ", $pointNames); } ?> |