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C#14 field backed properties

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ClemensFischer 2025-12-27 21:24:01 +01:00
parent 5d390071c6
commit be427c195a
20 changed files with 89 additions and 106 deletions
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18
MapProjections/Shared/GeoApiProjection.cs
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@ -17,8 +17,6 @@ namespace MapControl.Projections
/// </summary>
public class GeoApiProjection : MapProjection
{
private IProjectedCoordinateSystem coordinateSystem;
protected GeoApiProjection()
{
}
@ -44,23 +42,23 @@ namespace MapControl.Projections
/// </summary>
public IProjectedCoordinateSystem CoordinateSystem
{
get => coordinateSystem;
get;
protected set
{
coordinateSystem = value ?? throw new ArgumentNullException(nameof(value));
field = value ?? throw new ArgumentNullException(nameof(value));
var transformFactory = new CoordinateTransformationFactory();
LocationToMapTransform = transformFactory
.CreateFromCoordinateSystems(GeographicCoordinateSystem.WGS84, coordinateSystem)
.CreateFromCoordinateSystems(GeographicCoordinateSystem.WGS84, field)
.MathTransform;
MapToLocationTransform = transformFactory
.CreateFromCoordinateSystems(coordinateSystem, GeographicCoordinateSystem.WGS84)
.CreateFromCoordinateSystems(field, GeographicCoordinateSystem.WGS84)
.MathTransform;
CrsId = !string.IsNullOrEmpty(coordinateSystem.Authority) && coordinateSystem.AuthorityCode > 0
? $"{coordinateSystem.Authority}:{coordinateSystem.AuthorityCode}"
CrsId = !string.IsNullOrEmpty(field.Authority) && field.AuthorityCode > 0
? $"{field.Authority}:{field.AuthorityCode}"
: string.Empty;
if (CrsId == "EPSG:3857")
@ -69,7 +67,7 @@ namespace MapControl.Projections
}
else
{
var projection = coordinateSystem.Projection ??
var projection = field.Projection ??
throw new ArgumentException("CoordinateSystem.Projection must not be null.", nameof(value));
var centralMeridian = projection.GetParameter("central_meridian") ?? projection.GetParameter("longitude_of_origin");
@ -98,7 +96,7 @@ namespace MapControl.Projections
public override Point GetRelativeScale(double latitude, double longitude)
{
var k = coordinateSystem?.Projection?.GetParameter("scale_factor")?.Value ?? 1d;
var k = CoordinateSystem?.Projection?.GetParameter("scale_factor")?.Value ?? 1d;
return new Point(k, k);
}