Mirrors/GeoUK
1
0
Fork 0
mirror of https://github.com/IeuanWalker/GeoUK.git synced 2025-10-25 15:19:15 +00:00
Code Issues Packages Projects Releases Wiki Activity

LatitudeLongitude from easting northing helper (#54)

Browse Source 
* Refactor LatitudeLongitude class and add conversion method

Updated `LatitudeLongitude.cs` to include new using directives for `GeoUK.Ellipsoids` and `GeoUK.Projections`. The class structure has been improved for clarity, and a new static method `FromEastingNorthing` has been added to convert easting and northing coordinates to latitude and longitude using Cartesian transformations and projections.

* Update GeoUK/Coordinates/LatitudeLongitude.cs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Fix comment typo in LatitudeLongitude.cs

Removed incorrect comment about ETRS89 and WGS84.
No changes to functionality; transformation logic remains intact.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
Ieuan Walker
2025-07-29 18:10:22 +01:00
committed by GitHub
parent be72e405dc
commit c58fac4dde
1 changed files with 61 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

102
GeoUK/Coordinates/LatitudeLongitude.cs
View File

@@ -1,50 +1,70 @@
using GeoUK.Ellipsoids;
using GeoUK.Projections;
namespace GeoUK.Coordinates
{
/// <summary>
/// This immutable class represents a set of latitude/longitude/ellipsoidal height coordinates.
/// </summary>
public class LatitudeLongitude
/// <summary>
/// This immutable class represents a set of latitude/longitude/ellipsoidal height coordinates.
/// </summary>
public class LatitudeLongitude
{
/// <summary>
/// Constructor.
/// </summary>
/// <param name="degreesLatitude"></param>
/// <param name="degreesLongitude"></param>
public LatitudeLongitude(double degreesLatitude, double degreesLongitude)
{
Latitude = degreesLatitude;
Longitude = degreesLongitude;
EllipsoidalHeight = 0.0;
}
{
/// <summary>
/// Constructor.
/// </summary>
/// <param name="degreesLatitude"></param>
/// <param name="degreesLongitude"></param>
/// <param name="ellipsoidalHeight"></param>
public LatitudeLongitude(double degreesLatitude, double degreesLongitude, double ellipsoidalHeight)
{
Latitude = degreesLatitude;
Longitude = degreesLongitude;
EllipsoidalHeight = ellipsoidalHeight;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="degreesLatitude"></param>
/// <param name="degreesLongitude"></param>
public LatitudeLongitude(double degreesLatitude, double degreesLongitude)
{
Latitude = degreesLatitude;
Longitude = degreesLongitude;
EllipsoidalHeight = 0.0;
}
/// <summary>
/// Returns latitude in degrees.
/// </summary>
public double Latitude { get; }
/// <summary>
/// Constructor.
/// </summary>
/// <param name="degreesLatitude"></param>
/// <param name="degreesLongitude"></param>
/// <param name="ellipsoidalHeight"></param>
public LatitudeLongitude(double degreesLatitude, double degreesLongitude, double ellipsoidalHeight)
{
Latitude = degreesLatitude;
Longitude = degreesLongitude;
EllipsoidalHeight = ellipsoidalHeight;
}
/// <summary>
/// Returns longitude in degrees.
/// </summary>
public double Longitude { get; }
/// <summary>
/// Returns latitude in degrees.
/// </summary>
public double Latitude { get; }
/// <summary>
/// returns ellipsoidal height in meters.
/// </summary>
public double EllipsoidalHeight { get; }
/// <summary>
/// Returns longitude in degrees.
/// </summary>
public double Longitude { get; }
/// <summary>
/// Creates a <see cref="LatitudeLongitude"/> object from easting and northing coordinates.
/// </summary>
/// <param name="easting">The easting coordinate in meters.</param>
/// <param name="northing">The northing coordinate in meters.</param>
/// <returns>A <see cref="LatitudeLongitude"/> object representing the converted coordinates.</returns>
public static LatitudeLongitude FromEastingNorthing(double easting, double northing)
{
// Convert to Cartesian
Cartesian cartesian = Convert.ToCartesian(new Airy1830(),
new BritishNationalGrid(),
new EastingNorthing(easting, northing));
/// <summary>
/// returns ellipsoidal height in meters.
/// </summary>
public double EllipsoidalHeight { get; }
}
// ETRS89 is effectively WGS84
Cartesian wgsCartesian = Transform.Osgb36ToEtrs89(cartesian);
return Convert.ToLatitudeLongitude(new Wgs84(), wgsCartesian);
}
}
}