/// <summary>
/// Initializes object.
/// </summary>
/// <param name="trip">Trip.</param>
/// <param name="arrival">Arrival.</param>
/// <param name="departure">Departure.</param>
/// <param name="stop">Stop.</param>
public StopTime(Trips.Trip trip, int arrival, int departure, Stops.Stop stop)
{
Trip = trip;
ArrivalTime = arrival;
DepartureTime = departure;
Stop = stop;
}
/// <summary>
/// Gets a walking time between two stops.
/// </summary>
/// <param name="A">First stop.</param>
/// <param name="B">Second stop.</param>
/// <returns>Walking time in seconds.</returns>
public static int GetWalkingTime(this Stops.Stop A, Stops.Stop B)
{
var deltaLatitudeDistance = Math.Abs(Math.Abs(A.Location.Item1) - Math.Abs(B.Location.Item1)) * OneDegreeLatitudeLength; // Meters.
var deltaLongitudeDistance = Math.Abs(Math.Abs(A.Location.Item2) - Math.Abs(B.Location.Item2)) * OneDegreeLatitudeLength; // Meters.
return((int)(Math.Sqrt(Math.Pow(deltaLatitudeDistance, 2) + Math.Pow(deltaLongitudeDistance, 2)) / GlobalData.AverageWalkingSpeed)); // Pythagorean theoream.
}
/// <summary>
/// Initializes object using GTFS data feed.
/// </summary>
/// <param name="stops">Stops.</param>
/// <param name="stopTimes">Stop Times.</param>
/// <param name="trips">Trip.</param>
public GtfsStopTimes(System.IO.StreamReader stopTimes, Trips trips, Stops stops)
{
// Get order of field names.
string[] fieldNames = stopTimes.ReadLine().Split(',');
Dictionary <string, int> dic = new Dictionary <string, int>();
for (int i = 0; i < fieldNames.Length; i++)
{
dic.Add(fieldNames[i].Replace("\"", ""), i);
}
// These fields are required for our purpose.
if (!dic.ContainsKey("arrival_time"))
{
throw new FormatException("Arrival time field name missing.");
}
if (!dic.ContainsKey("departure_time"))
{
throw new FormatException("Departure time field name missing.");
}
if (!dic.ContainsKey("trip_id"))
{
throw new FormatException("Trip ID field name missing.");
}
if (!dic.ContainsKey("stop_id"))
{
throw new FormatException("Stop ID field name missing.");
}
while (!stopTimes.EndOfStream)
{
IList <string> tokens = GtfsDataFeed.SplitGtfs(stopTimes.ReadLine());
Trips.Trip trip = null;
try
{
trip = trips[tokens[dic["trip_id"]]];
}
catch
{
DataFeed.LogError($"Preprocessor tried to parse a stop-time, but the trip with ID { tokens[dic["trip_id"]] } does not exist. Skipping this item to recover the parsing process.");
continue;
}
if (trip.StopTimes.Count == 0) // Set departure time of the trip.
{
trip.DepartureTime = ConvertTimeToSecondsSinceMidnight(tokens[dic["departure_time"]]);
}
Stops.Stop stop = null;
try
{
stop = stops[tokens[dic["stop_id"]]];
}
catch
{
DataFeed.LogError($"Preprocessor tried to parse a stop-time to the trip { trip.ID }, line { trip.RouteInfo.ShortName } in direction to { trip.Headsign }, but the stop with ID { tokens[dic["stop_id"]] } does not exist. Skipping this item to recover the parsing process.");
continue;
}
StopTime st = new StopTime(trip, ConvertTimeToSecondsSinceMidnight(tokens[dic["arrival_time"]]) - trip.DepartureTime,
ConvertTimeToSecondsSinceMidnight(tokens[dic["departure_time"]]) - trip.DepartureTime, stop);
st.Trip.StopTimes.Add(st);
if (!st.Stop.ThroughgoingRoutes.Contains(st.Trip.RouteInfo))
{
st.Stop.ThroughgoingRoutes.Add(st.Trip.RouteInfo);
}
list.Add(st);
}
stopTimes.Dispose();
}
/// <summary>
/// Initializes object.
/// </summary>
/// <param name="duration">Duration in seconds.</param>
/// <param name="first">First stop.</param>
/// <param name="second">Second stop.</param>
public Footpath(int duration, Stops.Stop first, Stops.Stop second)
{
Duration = duration;
First = first;
Second = second;
}
