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Updated MapProjection and MapGraticule

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ClemensFischer 2026-02-01 01:42:24 +01:00
parent 2a45c1165c
commit cfed3575ac
16 changed files with 392 additions and 355 deletions
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17
MapProjections/Shared/ProjNetMapProjection.cs
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@ -52,10 +52,13 @@ namespace MapControl.Projections
var projection = field.Projection ??
throw new ArgumentException("CoordinateSystem.Projection must not be null.", nameof(value));
IsNormalCylindrical = projection.Name.StartsWith("Mercator") || projection.Name.Contains("Pseudo-Mercator");
var ellipsoid = field.GeographicCoordinateSystem.HorizontalDatum.Ellipsoid;
var transformFactory = new CoordinateTransformationFactory();
CrsId = !string.IsNullOrEmpty(field.Authority) && field.AuthorityCode > 0
? $"{field.Authority}:{field.AuthorityCode}"
: string.Empty;
LocationToMapTransform = transformFactory
.CreateFromCoordinateSystems(GeographicCoordinateSystem.WGS84, field)
.MathTransform;
@ -64,14 +67,9 @@ namespace MapControl.Projections
.CreateFromCoordinateSystems(field, GeographicCoordinateSystem.WGS84)
.MathTransform;
CrsId = !string.IsNullOrEmpty(field.Authority) && field.AuthorityCode > 0
? $"{field.Authority}:{field.AuthorityCode}"
: string.Empty;
var ellipsoid = field.GeographicCoordinateSystem.HorizontalDatum.Ellipsoid;
if (projection.Name.Contains("Pseudo-Mercator"))
{
IsNormalCylindrical = true;
FallbackProjection = new MapControl.WebMercatorProjection
{
EquatorialRadius = ellipsoid.SemiMajorAxis
@ -79,6 +77,7 @@ namespace MapControl.Projections
}
else if (projection.Name.StartsWith("Mercator"))
{
IsNormalCylindrical = true;
FallbackProjection = new MapControl.WorldMercatorProjection
{
EquatorialRadius = ellipsoid.SemiMajorAxis,
@ -106,7 +105,7 @@ namespace MapControl.Projections
ScaleFactor = projection.GetParameter("scale_factor").Value,
FalseEasting = projection.GetParameter("false_easting").Value,
FalseNorthing = projection.GetParameter("false_northing").Value,
Hemisphere = projection.GetParameter("latitude_of_origin").Value >= 0 ? Hemisphere.North : Hemisphere.South
LatitudeOfOrigin = projection.GetParameter("latitude_of_origin").Value
};
}
}