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Added AutoUtmProjection

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Clemens 2022-02-17 22:58:31 +01:00
parent 3ff7b3df50
commit fe6d15fea6
6 changed files with 68 additions and 22 deletions
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50
MapProjections/Shared/AutoUtmProjection.cs Normal file
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@ -0,0 +1,50 @@
// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
// © 2022 Clemens Fischer
// Licensed under the Microsoft Public License (Ms-PL)
using ProjNet.CoordinateSystems;
using System.Windows;
namespace MapControl.Projections
{
public class AutoUtmProjection : GeoApiProjection
{
private int zoneNumber;
private bool zoneIsNorth;
public AutoUtmProjection()
{
UpdateZone();
}
public override Point LocationToMap(Location location)
{
UpdateZone();
return base.LocationToMap(location);
}
public override Location MapToLocation(Point point)
{
UpdateZone();
return base.MapToLocation(point);
}
private void UpdateZone()
{
var north = Center.Latitude >= 0d;
var lon = Location.NormalizeLongitude(Center.Longitude);
var zone = (int)(lon + 180d) / 6 + 1;
if (zoneNumber != zone || zoneIsNorth != north)
{
zoneNumber = zone;
zoneIsNorth = north;
CoordinateSystem = ProjectedCoordinateSystem.WGS84_UTM(zoneNumber, zoneIsNorth);
CrsId = "AUTO2:42001";
System.Diagnostics.Debug.WriteLine(CoordinateSystem.Name);
}
}
}
}

5
MapProjections/Shared/Ed50UtmProjection.cs
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@ -9,11 +9,6 @@ namespace MapControl.Projections
public class Ed50UtmProjection : GeoApiProjection
{
public Ed50UtmProjection(int zone)
{
SetZone(zone);
}
protected void SetZone(int zone)
{
if (zone < 28 || zone > 38)
{

5
MapProjections/Shared/Etrs89UtmProjection.cs
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@ -9,11 +9,6 @@ namespace MapControl.Projections
public class Etrs89UtmProjection : GeoApiProjection
{
public Etrs89UtmProjection(int zone)
{
SetZone(zone);
}
protected void SetZone(int zone)
{
if (zone < 28 || zone > 38)
{

22
MapProjections/Shared/GeoApiProjectionFactory.cs
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@ -10,6 +10,7 @@ namespace MapControl.Projections
{
public const int WorldMercator = 3395;
public const int WebMercator = 3857;
public const int AutoUtm = 42001;
public const int Ed50UtmFirst = 23028;
public const int Ed50UtmLast = 23038;
public const int Etrs89UtmFirst = 25828;
@ -26,16 +27,19 @@ namespace MapControl.Projections
public override MapProjection GetProjection(string crsId)
{
MapProjection projection = null;
var str = crsId.StartsWith("EPSG:") ? crsId.Substring(5)
: crsId.StartsWith("AUTO2:") ? crsId.Substring(6)
: null;
if (crsId.StartsWith("EPSG:") && int.TryParse(crsId.Substring(5), out int epsgCode))
if (int.TryParse(str, out int code))
{
if (CoordinateSystemWkts.TryGetValue(epsgCode, out string wkt))
if (CoordinateSystemWkts.TryGetValue(code, out string wkt))
{
projection = new GeoApiProjection(wkt);
}
else
{
switch (epsgCode)
switch (code)
{
case WorldMercator:
projection = new WorldMercatorProjection();
@ -45,20 +49,24 @@ namespace MapControl.Projections
projection = new WebMercatorProjection();
break;
case AutoUtm:
projection = new AutoUtmProjection();
break;
case int c when c >= Ed50UtmFirst && c <= Ed50UtmLast:
projection = new Ed50UtmProjection(epsgCode % 100);
projection = new Ed50UtmProjection(code % 100);
break;
case int c when c >= Etrs89UtmFirst && c <= Etrs89UtmLast:
projection = new Etrs89UtmProjection(epsgCode % 100);
projection = new Etrs89UtmProjection(code % 100);
break;
case int c when c >= Wgs84UtmNorthFirst && c <= Wgs84UtmNorthLast:
projection = new Wgs84UtmProjection(epsgCode % 100, true);
projection = new Wgs84UtmProjection(code % 100, true);
break;
case int c when c >= Wgs84UtmSouthFirst && c <= Wgs84UtmSouthLast:
projection = new Wgs84UtmProjection(epsgCode % 100, false);
projection = new Wgs84UtmProjection(code % 100, false);
break;
case Wgs84UpsNorth:

5
MapProjections/Shared/Wgs84UtmProjection.cs
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@ -10,11 +10,6 @@ namespace MapControl.Projections
public class Wgs84UtmProjection : GeoApiProjection
{
public Wgs84UtmProjection(int zone, bool north)
{
SetZone(zone, north);
}
protected void SetZone(int zone, bool north)
{
if (zone < 1 || zone > 60)
{

3
MapProjections/UWP/MapProjections.UWP.csproj
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@ -40,6 +40,9 @@
<RestoreProjectStyle>PackageReference</RestoreProjectStyle>
</PropertyGroup>
<ItemGroup>
<Compile Include="..\Shared\AutoUtmProjection.cs">
<Link>AutoUtmProjection.cs</Link>
</Compile>
<Compile Include="..\Shared\Ed50UtmProjection.cs">
<Link>Ed50UtmProjection.cs</Link>
</Compile>