static string GetAirportCode(string value, List <Airport> airports, HashSet <string> missing)
{
Airport airport;
if (string.IsNullOrEmpty(value))
{
return(null);
}
// First, try looking up the airport by (any) airport code.
if ((airport = Airports.GetAirport(value, AirportCode.Any)) != null)
{
airports.Add(airport);
return(airport.FAA);
}
// Next, try matching the common name of the airport.
if ((airport = Airports.GetAirportByName(value)) != null)
{
airports.Add(airport);
return(airport.FAA);
}
// Unknown airport... just return the provided string.
missing.Add(value);
return(value);
}
/// <summary>
/// This is the main entry point of the application.
/// </summary>
static void Main(string[] args)
{
Airports.Init();
LogBook.Init();
// if you want to use a different Application Delegate class from "AppDelegate"
// you can specify it here.
UIApplication.Main(args, null, "AppDelegate");
}
public override void ViewWillAppear(bool animated)
{
base.ViewWillAppear(animated);
// Default to the region for North America
double minLatitude = 37.37 - (28.49 / 2);
double maxLatitude = 37.37 + (28.49 / 2);
double minLongitide = -96.24 - (31.025 / 2);
double maxLongitude = -96.24 + (31.025 / 2);
bool initialized = false;
foreach (var code in LogBook.GetVisitedAirports())
{
Airport airport = Airports.GetAirport(code, AirportCode.FAA);
if (airport == null)
{
continue;
}
if (!initialized)
{
minLongitide = maxLongitude = airport.Longitude;
minLatitude = maxLatitude = airport.Latitude;
initialized = true;
}
else
{
minLongitide = Math.Min(minLongitide, airport.Longitude);
maxLongitude = Math.Max(maxLongitude, airport.Longitude);
minLatitude = Math.Min(minLatitude, airport.Latitude);
maxLatitude = Math.Max(maxLatitude, airport.Latitude);
}
}
coordinates = new CLLocationCoordinate2D((minLatitude + maxLatitude) / 2, (minLongitide + maxLongitude) / 2);
double spanLongitude = Math.Abs(maxLongitude - minLongitide);
double spanLatitude = Math.Abs(maxLatitude - minLatitude);
if (initialized)
{
spanLongitude = Math.Max(spanLongitude, 1.0) * 1.25;
spanLatitude = Math.Max(spanLatitude, 1.0) * 1.25;
}
// Get the region for North America
var region = new MKCoordinateRegion(
coordinates, new MKCoordinateSpan(spanLatitude, spanLongitude)
);
mapView.SetRegion(region, animated);
}
void MapRegionChanged(object sender, MKMapViewChangeEventArgs e)
{
Dictionary <string, AirportAnnotation> current = new Dictionary <string, AirportAnnotation> ();
List <AirportAnnotation> added = new List <AirportAnnotation> ();
// Query for the list of airports in the new region
foreach (var airport in Airports.GetAirports(mapView.Region))
{
AirportAnnotation aa;
if (annotations.ContainsKey(airport.FAA))
{
// This airport is already in view...
aa = annotations[airport.FAA];
annotations.Remove(airport.FAA);
}
else
{
// This is a new annotation, keep track of it in 'added'
aa = new AirportAnnotation(airport);
added.Add(aa);
}
current.Add(aa.Airport.FAA, aa);
}
if (annotations.Count > 0)
{
// Remove annotations that are no longer in view
mapView.RemoveAnnotations(annotations.Values.ToArray());
annotations.Clear();
}
if (added.Count > 0)
{
mapView.AddAnnotation(added.ToArray());
added.Clear();
}
annotations = current;
}
IEnumerable <Airport> GetAirports(MKCoordinateRegion region)
{
if (visited)
{
foreach (var code in LogBook.GetVisitedAirports())
{
Airport airport = Airports.GetAirport(code, AirportCode.FAA);
if (airport != null)
{
yield return(airport);
}
}
}
else
{
foreach (var airport in Airports.GetAirports(region))
{
yield return(airport);
}
}
yield break;
}
static bool IsCrossCountry(List <Airport> airports, double minimum)
{
if (airports.Count < 2)
{
return(false);
}
Airport origin = airports[0];
for (int i = 1; i < airports.Count; i++)
{
double distance = Airports.GetDistanceBetween(origin, airports[i]);
// The FAA only classifies flights where the pilot touches down
// at one or more airports that are greater than 50 nautical miles
// from the point of origin.
if (distance > minimum)
{
return(true);
}
}
return(false);
}
