public Aircraft(string callsign, Position position, double airspeed, double altitude, double heading)
{
this.callsign = callsign;
this.position = position;
this.airspeed = airspeed;
this.altitude = altitude;
this.heading = heading;
}
public double distanceTo(Position position)
{
double R = EARTH_RADIUS_KM;
double φ1 = DegreesToRadians(latitude), λ1 = DegreesToRadians(longitude);
double φ2 = DegreesToRadians(position.latitude), λ2 = DegreesToRadians(position.longitude);
double Δφ = φ2 - φ1;
double Δλ = λ2 - λ1;
double a = Math.Sin(Δφ / 2) * Math.Sin(Δφ / 2) +
Math.Cos(φ1) * Math.Cos(φ2) *
Math.Sin(Δλ / 2) * Math.Sin(Δλ / 2);
double c = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
double d = R * c;
return d * KM_TO_NM;
}
public Wind windAtPosition(Position position)
{
Wind wind = new Wind();
double closest = Double.MaxValue;
foreach (WeatherStation station in stations)
{
double distance = station.position.distanceTo(position);
if (distance < closest)
{
closest = distance;
wind = station.wind;
}
}
return wind;
}
public void updatePosition(double milliseconds)
{
double distance = this.groundspeed * milliseconds / Position.KM_TO_NM / Position.MS_IN_HR;
this.position = this.position.destinationPoint(heading + this.position.magneticDeclination(altitude), distance);
}