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Moved EquatorialRadius property to MapProjection

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ClemensFischer 2026-01-24 14:58:16 +01:00
parent aaa69a3c03
commit d71d6c6e01
14 changed files with 53 additions and 70 deletions
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11
MapControl/Shared/Location.cs
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@ -17,6 +17,11 @@ namespace MapControl
#endif
public class Location : IEquatable<Location>
{
// Arithmetic mean radius (2*a + b) / 3 == (1 - f/3) * a.
// See https://en.wikipedia.org/wiki/Earth_radius#Arithmetic_mean_radius.
//
public const double Wgs84MeanRadius = (1d - MapProjection.Wgs84Flattening / 3d) * MapProjection.Wgs84EquatorialRadius;
public Location()
{
}
@ -75,7 +80,7 @@ namespace MapControl
/// <summary>
/// Calculates great circle azimuth in degrees and distance in meters between this and the specified Location.
/// </summary>
public (double, double) GetAzimuthDistance(Location location, double earthRadius = MapProjection.Wgs84MeanRadius)
public (double, double) GetAzimuthDistance(Location location, double earthRadius = Wgs84MeanRadius)
{
var lat1 = Latitude * Math.PI / 180d;
var lon1 = Longitude * Math.PI / 180d;
@ -100,7 +105,7 @@ namespace MapControl
/// <summary>
/// Calculates great distance in meters between this and the specified Location.
/// </summary>
public double GetDistance(Location location, double earthRadius = MapProjection.Wgs84MeanRadius)
public double GetDistance(Location location, double earthRadius = Wgs84MeanRadius)
{
(var _, var distance) = GetAzimuthDistance(location, earthRadius);
@ -110,7 +115,7 @@ namespace MapControl
/// <summary>
/// Calculates the Location on a great circle at the specified azimuth in degrees and distance in meters from this Location.
/// </summary>
public Location GetLocation(double azimuth, double distance, double earthRadius = MapProjection.Wgs84MeanRadius)
public Location GetLocation(double azimuth, double distance, double earthRadius = Wgs84MeanRadius)
{
var lat1 = Latitude * Math.PI / 180d;
var lon1 = Longitude * Math.PI / 180d;