public static IEnumerable <GeoLatLonAlt> GetAltitudeForCoords(double lat, double lng, double distance)
{
distance = distance / 1000;
using (var db = new BotContext())
{
return
(db.MapzenAlt.Where(
x =>
12742 *
SqlCeFunctions.Asin(
SqlCeFunctions.SquareRoot(SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Lat - lat) / 2) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 *
(x.Lat - lat) / 2) +
SqlCeFunctions.Cos(SqlCeFunctions.Pi() / 180 * lat) *
SqlCeFunctions.Cos(SqlCeFunctions.Pi() / 180 * x.Lat) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Lon - lng) / 2) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Lon - lng) / 2))) <
distance).OrderBy(x =>
12742 *
SqlCeFunctions.Asin(
SqlCeFunctions.SquareRoot(SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Lat - lat) / 2) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 *
(x.Lat - lat) / 2) +
SqlCeFunctions.Cos(SqlCeFunctions.Pi() / 180 * lat) *
SqlCeFunctions.Cos(SqlCeFunctions.Pi() / 180 * x.Lat) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Lon - lng) / 2) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Lon - lng) / 2)))).ToList());
}
}
public static bool ElevationDataExists(double lat, double lng, double distance)
{
distance = distance / 1000;
using (var db = new BotContext())
{
var res = false;
try
{
res =
db.MapzenAlt.Any(
x =>
12742 *
SqlCeFunctions.Asin(
SqlCeFunctions.SquareRoot(
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Lat - lat) / 2) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 *
(x.Lat - lat) / 2) +
SqlCeFunctions.Cos(SqlCeFunctions.Pi() / 180 * lat) *
SqlCeFunctions.Cos(SqlCeFunctions.Pi() / 180 * x.Lat) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Lon - lng) / 2) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Lon - lng) / 2))) <
distance);
}
catch (Exception)
{
//ignore
}
return(res);
}
}
public void SqlCeFunction_passing_function_as_argument_to_another_works()
{
using (var context = GetArubaCeContext())
{
var query = context.AllTypes.Select(a => SqlCeFunctions.Asin(SqlCeFunctions.Acos(a.c10_float)));
Assert.Contains("ASIN", query.ToString().ToUpperInvariant());
Assert.Contains("ACOS", query.ToString().ToUpperInvariant());
}
}
public static IEnumerable <PokemonSeen> GetPokemonSeenForCoords(double lat, double lng, double distance)
{
distance = distance / 1000;
using (var db = new BotContext())
{
return
(db.PokemonSeen.Where(
x =>
12742 *
SqlCeFunctions.Asin(
SqlCeFunctions.SquareRoot(SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Latitude - lat) / 2) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 *
(x.Latitude - lat) / 2) +
SqlCeFunctions.Cos(SqlCeFunctions.Pi() / 180 * lat) *
SqlCeFunctions.Cos(SqlCeFunctions.Pi() / 180 * x.Latitude) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Longitude - lng) / 2) *
SqlCeFunctions.Sin(SqlCeFunctions.Pi() / 180 * (x.Longitude - lng) / 2))) <
distance).ToList());
}
}