private Flights CreateFlight
(DateTime relativeDate, DateTime lastFlightDate, FlightPlan flightPlan,
int numSeg, List <Segment> flightSegments)
{
double longitude1 = 0, longitude2, latitude1 = 0, latitude2, longitude3, latitude3;
double secoInSegment, timeRatio, distance, midDistance;
// Find how much time passed from segment till now.
secoInSegment = relativeDate.Subtract(lastFlightDate).TotalSeconds;
// Find the time ratio.
timeRatio = secoInSegment / flightSegments[numSeg - 1].Timespan_seconds;
// Check if we are in the first segment.
if (numSeg == 1)
{
// The last coordinate is from Initial_Location.
longitude1 = flightPlan.Initial_location.Longitude;
latitude1 = flightPlan.Initial_location.Latitude;
}
else
{
// The last coordinate is from last segment.
longitude1 = flightSegments[numSeg - 2].Longitude;
latitude1 = flightSegments[numSeg - 2].Latitude;
}
// The current segment's coordinates.
longitude2 = flightSegments[numSeg - 1].Longitude;
latitude2 = flightSegments[numSeg - 1].Latitude;
// Linear interpolation
distance = Math.Sqrt((Math.Pow(longitude2 - longitude1, 2)
+ Math.Pow(latitude2 - latitude1, 2)));
midDistance = timeRatio * distance;
latitude3 = latitude2 - ((midDistance) * (latitude2 - latitude1) / distance);
longitude3 = longitude2 - ((midDistance) * (longitude2 - longitude1) / distance);
// Create new Flight with the details we found.
Flights flight = new Flights();
flight.Longitude = longitude3;
flight.Latitude = latitude3;
flight.Flight_id = flightPlan.GetId();
flight.Is_external = false;
flight.Company_name = flightPlan.Company_Name;
flight.Passengers = flightPlan.Passengers;
flight.Date_time = flightPlan.Initial_location.Date_time;
return(flight);
}