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MapProjection.GridConvergence, rotation instead of Matrix

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ClemensFischer 2026-01-29 21:36:11 +01:00
parent 45b47bbae4
commit 4ad9f2ea2a
15 changed files with 272 additions and 239 deletions
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24
MapProjections/Shared/ProjNetMapProjection.cs
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@ -15,8 +15,11 @@ namespace MapControl.Projections
/// </summary>
public class ProjNetMapProjection : MapProjection
{
protected ProjNetMapProjection()
protected MapProjection FallbackProjection { get; }
protected ProjNetMapProjection(MapProjection fallbackProjection)
{
FallbackProjection = fallbackProjection;
}
public ProjNetMapProjection(string coordinateSystemWkt)
@ -71,11 +74,6 @@ namespace MapControl.Projections
public MathTransform MapToLocationTransform { get; private set; }
public override Matrix RelativeTransform(double latitude, double longitude)
{
return new Matrix(1d, 0d, 0d, 1d, 0d, 0d);
}
public override Point LocationToMap(double latitude, double longitude)
{
if (LocationToMapTransform == null)
@ -99,5 +97,19 @@ namespace MapControl.Projections
return new Location(coordinate[1], coordinate[0]);
}
public override Matrix RelativeTransform(double latitude, double longitude)
{
return FallbackProjection != null
? FallbackProjection.RelativeTransform(latitude, longitude)
: new Matrix(1d, 0d, 0d, 1d, 0d, 0d);
}
public override double GridConvergence(double x, double y)
{
return FallbackProjection != null
? FallbackProjection.GridConvergence(x, y)
: 0d;
}
}
}