/// <summary>
/// 두지점 사이의 거리 반환
/// http://blogs.msdn.com/b/dragoman/archive/2010/09/29/wp7-code-distance-computations-with-the-geolocation-api.aspx
/// </summary>
/// <param name="in"></param>
/// <param name="here"></param>
/// <param name="there"></param>
/// <returns></returns>
public static double Between(this DistanceIn @in, GeocoordinatePCL here, GeocoordinatePCL there)
{
int r = (@in == DistanceIn.Miles) ? 3960 : 6371;
double dLat = (there.Latitude - here.Latitude).ToRadian();
var dLon = (there.Longitude - here.Longitude).ToRadian();
double a = Math.Sin(dLat/2)*Math.Sin(dLat/2) +
Math.Cos(here.Latitude.ToRadian())*Math.Cos(there.Latitude.ToRadian())*
Math.Sin(dLon/2)*Math.Sin(dLon/2);
double c = 2*Math.Asin(Math.Min(1, Math.Sqrt(a)));
double d = r*c;
return d;
}
/// <summary>
/// 위치 반환 - 비동기로 만들면 스레드 사라짐
/// </summary>
/// <returns></returns>
public override GeocoordinatePCL GetGeocoordinate()
{
GeocoordinatePCL returnValue = null;
if (_geoposition == null)
{
returnValue = _defaultGeoPosition;
}
else
{
returnValue = new GeocoordinatePCL
{
Accuracy = _geoposition.Coordinate.Accuracy,
Altitude = _geoposition.Coordinate.Point.Position.Altitude,
AltitudeAccuracy = _geoposition.Coordinate.AltitudeAccuracy,
Heading = _geoposition.Coordinate.Heading,
Latitude = _geoposition.Coordinate.Point.Position.Latitude,
Longitude = _geoposition.Coordinate.Point.Position.Longitude,
Speed = _geoposition.Coordinate.Speed,
Timestamp = _geoposition.Coordinate.Timestamp
};
}
return returnValue;
}
public override void Init()
{
_geolocator = new Geolocator();
//_geolocator.MovementThreshold = 1;
//_geolocator.ReportInterval = 1;
_geolocator.PositionChanged += geolocator_PositionChanged;
_defaultGeoPosition = new GeocoordinatePCL
{
Accuracy = 1.0,
Altitude = 13,
Latitude = 37.566535,
Longitude = 126.977969,
Timestamp = DateTime.Now
};
_defaultCivicAddress = new CivicAddressPCL
{
City = "Seoul",
Country = "ko-KR",
PostalCode = "",
State = "",
Timestamp = DateTimeOffset.Now
};
}