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Added enum Hemisphere

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ClemensFischer 2026-01-10 16:21:55 +01:00
parent 4166bd34d1
commit 1f75e9feea
6 changed files with 47 additions and 41 deletions
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16
MapProjections/Shared/Wgs84AutoUtmProjection.cs
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@ -3,8 +3,9 @@
namespace MapControl.Projections
{
/// <summary>
/// WGS84 Universal Transverse Mercator Projection with
/// automatic zone selection from projection center.
/// WGS84 Universal Transverse Mercator Projection with automatic zone selection from
/// the projection center. If the CRS Id passed to the constructor is null or empty,
/// appropriate CRS Ids EPSG:32601 to EPSG:32660 and EPSG:32701 to EPSG:32760 are used.
/// </summary>
public class Wgs84AutoUtmProjection : Wgs84UtmProjection
{
@ -16,11 +17,8 @@ namespace MapControl.Projections
// XAML needs parameterless constructor
}
/// <summary>
/// When the crsId parameter is null or empty, the projection will use EPSG:32***.
/// </summary>
public Wgs84AutoUtmProjection(string crsId)
: base(31, true)
: base(31, Hemisphere.North)
{
autoCrsId = crsId;
@ -41,11 +39,11 @@ namespace MapControl.Projections
var lon = Location.NormalizeLongitude(value.Longitude);
var zone = (int)Math.Floor(lon / 6d) + 31;
var north = value.Latitude >= 0d;
var hemisphere = value.Latitude >= 0d ? Hemisphere.North : Hemisphere.South;
if (Zone != zone || IsNorth != north)
if (Zone != zone || Hemisphere != hemisphere)
{
SetZone(zone, north);
SetZone(zone, hemisphere);
if (!string.IsNullOrEmpty(autoCrsId))
{

12
MapProjections/Shared/Wgs84UtmProjection.cs
View file

@ -16,14 +16,14 @@ namespace MapControl.Projections
public const int LastZoneSouthEpsgCode = 32700 + LastZone;
public int Zone { get; private set; }
public bool IsNorth { get; private set; }
public Hemisphere Hemisphere { get; private set; }
public Wgs84UtmProjection(int zone, bool north)
public Wgs84UtmProjection(int zone, Hemisphere hemisphere)
{
SetZone(zone, north);
SetZone(zone, hemisphere);
}
protected void SetZone(int zone, bool north)
protected void SetZone(int zone, Hemisphere hemisphere)
{
if (zone < FirstZone || zone > LastZone)
{
@ -31,8 +31,8 @@ namespace MapControl.Projections
}
Zone = zone;
IsNorth = north;
CoordinateSystem = ProjectedCoordinateSystem.WGS84_UTM(Zone, IsNorth);
Hemisphere = hemisphere;
CoordinateSystem = ProjectedCoordinateSystem.WGS84_UTM(Zone, hemisphere == Hemisphere.North);
}
}
}