public List <GeographyPlace> GetNearestPlacesUsingGeography(double latitude, double longitude, double radius = 10, int limit = 10)
{
var point = DbGeography.FromText("POINT(" + longitude + " " + latitude + ")", 4326);
var topLeftLatitude = 23.783726;
var topLeftLongitude = 90.344245;
var bottomRightLatitude = 23.685148;
var bottomRightLongitude = 90.492713;
MapsContext context = new MapsContext();
var datas =
context.GeographyPlaces.Where(x => x.Location.Distance(point) <= radius * 1000)
.Take(limit)
.OrderBy(x => x.Location.Distance(point));
System.Data.Spatial.DbGeography polygon;
try
{
polygon =
System.Data.Spatial.DbGeography.PolygonFromText(
"POLYGON((127.652 -26.244,127.652 -26.194,90.344245 23.783726,127.652 -26.244))",
4326);
}
catch (System.Exception ex)
{
throw;
}
//polygon.
var result = datas.ToList();
return(result);
}
public mapsController(MapsContext context)
{
_context = context;
if (_context.MapsDB.Count() == 0)
{
_context.MapsDB.Add(getMap()); //add a sample map if empty
_context.SaveChanges();
}
}
public List <Place> GetNearestPlaces(double latitude, double longitude, double radius = 10, int limit = 10)
{
MapsContext context = new MapsContext();
//var datas = context.Places.Select(x => Math.Acos(Math.Sin(deg2rad(lat1)) * Math.Sin(deg2rad(lat2))
// + Math.Cos(deg2rad(lat1)) * Math.Cos(deg2rad(lat2)) * Math.Cos(deg2rad(theta))));
//var datas = context.Places.Select(x => Math.Acos(Math.Sin(deg2rad(latitude)) * Math.Sin(deg2rad(x.Latitude))
// + Math.Cos(deg2rad(latitude)) * Math.Cos(deg2rad(x.Latitude)) * Math.Cos(deg2rad(x.Longitude-longitude))));
//var datas = context.Places.Where(x => Math.Acos(Math.Sin(latitude * Math.PI / 180.0) * Math.Sin(x.Latitude * Math.PI / 180.0)
// + Math.Cos(latitude * Math.PI / 180.0) * Math.Cos(x.Latitude * Math.PI / 180.0) * Math.Cos(x.Longitude - longitude * Math.PI / 180.0)) * 6371 <= radius);
//var datas = context.Places.Where(x => 3959 * Math.Acos(Math.Cos(radians(x.Latitude)) * Math.Cos(radians(latitude))
// * Math.Cos(radians(x.Longitude) - radians(longitude)) + Math.Sin(radians(latitude)) *
// Math.Sin(radians(x.Latitude))) * 1.60934 <= radius).ToList();
//var datas = context.Places.Where(x => Math.Sin(x.Latitude / 57.2957795130823) * Math.Sin(latitude / 57.2957795130823) + Math.Cos(x.Latitude / 57.2957795130823) * Math.Cos(latitude / 57.2957795130823) * Math.Cos(x.Latitude / 57.2957795130823 - latitude / 57.2957795130823) * 6371 <= radius);
//var tt = (3959*acos(
// cos(radians(@myLat))*cos(radians(Latitude))*cos(radians(Longitude) - radians(@myLong))
// + sin(radians(@myLat))*sin(radians(Latitude))))*1.60934 <= 10;
//var tt2 = select
//ACOS(
// SIN(PI()*@lat1/180.0)*SIN(PI()*@lat2/180.0) +
// COS(PI()*@lat1/180.0)*COS(PI()*@lat2/180.0)*COS(PI()*@lon2/180.0 - PI()*@lon1/180.0)
//)*6371;
//var center = new GeoCoordinate(latitude, longitude);
//var result = context.Places.Select(x => new GeoCoordinate(x.Latitude, x.Longitude))
// .Where(x => x.GetDistanceTo(center) < radius);
//var datas = result.ToList();
//var datas = SELECT* FROM Places WHERE
// (Lat >= 1.2393 AND Lat <= 1.5532) AND(Lon >= -1.8184 AND Lon <= 0.4221)
// HAVING
// acos(sin(1.3963) * sin(Lat) + cos(1.3963) * cos(Lat) * cos(Lon - (-0.6981))) <= 0.1570;
var datas = context.Places.Where(x => SqlFunctions.Acos(SqlFunctions.Sin(latitude * SqlFunctions.Pi() / 180.0)
* SqlFunctions.Sin(x.Latitude * SqlFunctions.Pi() / 180.0)
+ SqlFunctions.Cos(latitude * SqlFunctions.Pi() / 180.0)
* SqlFunctions.Cos(x.Latitude * SqlFunctions.Pi() / 180.0)
* SqlFunctions.Cos((x.Longitude * SqlFunctions.Pi() / 180.0) - (longitude * SqlFunctions.Pi() / 180.0))) * 6371 <= radius)
.Take(limit)
.OrderBy(x => SqlFunctions.Acos(SqlFunctions.Sin(latitude * SqlFunctions.Pi() / 180.0)
* SqlFunctions.Sin(x.Latitude * SqlFunctions.Pi() / 180.0)
+ SqlFunctions.Cos(latitude * SqlFunctions.Pi() / 180.0)
* SqlFunctions.Cos(x.Latitude * SqlFunctions.Pi() / 180.0)
* SqlFunctions.Cos((x.Longitude * SqlFunctions.Pi() / 180.0) - (longitude * SqlFunctions.Pi() / 180.0))) * 6371);
var result = datas.ToList();
return(result);
}
public List <Place> GetPlacesFromRectangle(GeoPoint top_left, double latitude1, double longitude1, double latitude2, double longitude2)
{
MapsContext context = new MapsContext();
//SELECT* FROM Places WHERE (Lat => latmin AND Lat <= latmax) AND(Lon >= -lonmin AND Lon <= lonmax)
//var datas = context.Places.Where(x => SqlFunctions.Acos(SqlFunctions.Sin(latitude * SqlFunctions.Pi() / 180.0)
// * SqlFunctions.Sin(x.Latitude * SqlFunctions.Pi() / 180.0)
// + SqlFunctions.Cos(latitude * SqlFunctions.Pi() / 180.0)
// * SqlFunctions.Cos(x.Latitude * SqlFunctions.Pi() / 180.0)
// * SqlFunctions.Cos((x.Longitude * SqlFunctions.Pi() / 180.0) - (longitude * SqlFunctions.Pi() / 180.0))) * 6371 <= radius)
// .Take(limit)
// .OrderBy(x => SqlFunctions.Acos(SqlFunctions.Sin(latitude * SqlFunctions.Pi() / 180.0)
// * SqlFunctions.Sin(x.Latitude * SqlFunctions.Pi() / 180.0)
// + SqlFunctions.Cos(latitude * SqlFunctions.Pi() / 180.0)
// * SqlFunctions.Cos(x.Latitude * SqlFunctions.Pi() / 180.0)
// * SqlFunctions.Cos((x.Longitude * SqlFunctions.Pi() / 180.0) - (longitude * SqlFunctions.Pi() / 180.0))) * 6371);
var datas = context.Places.Where(x => (x.Latitude >= latitude1 && x.Latitude <= latitude2) &&
(x.Longitude >= longitude1 && x.Longitude <= longitude2));
var result = datas.ToList();
return(result);
}
public RepositoryMaps(MapsContext context)
{
this.context = context;
}
