public static JsonObject AIS(GpsLocation location)
{
JsonObject obj = CreateBasicObject(ProtocolConstants.METHOD_AIS);
JsonObject args = RetrieveArgObject(obj);
args.Put(ProtocolConstants.ARG_GPS_LONGITUDE, location.Longitude);
args.Put(ProtocolConstants.ARG_GPS_LATITUDE, location.Latitude);
return obj;
}
private void UpdateRadians(RadarItem item, GpsLocation remoteLoc)
{
GpsLocation localLoc = GPSUnit.Instance.Location;
/*double g = remoteLoc.Longitude - localLoc.Longitude;
double grad = g / RADIANS_MAGIC_NUMBER;
double nrad = localLoc.Longitude / RADIANS_MAGIC_NUMBER;
double lrad = localLoc.Latitude / RADIANS_MAGIC_NUMBER;
double srad = remoteLoc.Longitude / RADIANS_MAGIC_NUMBER;
#if TRACE
Trace.WriteLine(String.Format("localLoc: {0}", localLoc));
Trace.WriteLine(String.Format("remoteLoc: {0}", remoteLoc));
Trace.WriteLine(String.Format("grad={0}, nrad={1}, lrad={2}, srad={3}", grad, nrad, lrad, srad));
#endif
double azi = (Math.PI - (-Math.Atan((Math.Tan(grad) / Math.Sin(lrad)))));
item.Azimuth = azi * RADIANS_MAGIC_NUMBER;
double a = Math.Cos(grad);
double b = Math.Cos(lrad);
double ele = Math.Atan((a * b) / (Math.Sqrt(1 - (a * a) * (b * b))));
//item.Elevation = ele > 0 ? ele : -ele * RADIANS_DIVISOR;
item.Elevation = ele * RADIANS_MAGIC_NUMBER;
#if TRACE
Trace.WriteLine(String.Format("azi={0},ele={1}", azi, ele));
Trace.WriteLine(String.Format("item.Azimuth={0}, item.Elevation={1}", item.Azimuth, item.Elevation));
#endif
*/
item.Azimuth = remoteLoc.Latitude - localLoc.Latitude * 50;
double y = remoteLoc.Longitude - localLoc.Longitude * 1.5;
item.Elevation = y < 0 ? -y : y;
}