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Abstract MapProjection.RelativeScale

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ClemensFischer 2026-01-25 18:04:59 +01:00
parent ceb19a9ae4
commit e8e7cacac0
4 changed files with 54 additions and 44 deletions
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10
MapControl/Shared/MapProjection.cs
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@ -108,7 +108,7 @@ namespace MapControl
/// Gets the relative scale at the specified geographic coordinates.
/// The returned Matrix represents the local distortion of the map projection.
/// </summary>
public virtual Matrix RelativeScale(double latitude, double longitude) => new Matrix(1d, 0d, 0d, 1d, 0d, 0d);
public abstract Matrix RelativeScale(double latitude, double longitude);
/// <summary>
/// Transforms geographic coordinates to a Point in projected map coordinates.
@ -143,7 +143,7 @@ namespace MapControl
/// Transforms a BoundingBox in geographic coordinates to a Rect in projected map coordinates.
/// Returns null when the BoundingBox can not be transformed.
/// </summary>
public virtual Rect? BoundingBoxToMap(BoundingBox boundingBox)
public Rect? BoundingBoxToMap(BoundingBox boundingBox)
{
var southWest = LocationToMap(boundingBox.South, boundingBox.West);
var northEast = LocationToMap(boundingBox.North, boundingBox.East);
@ -153,9 +153,9 @@ namespace MapControl
/// <summary>
/// Transforms a Rect in projected map coordinates to a BoundingBox in geographic coordinates.
/// Returns null when the MapRect can not be transformed.
/// Returns null when the Rect can not be transformed.
/// </summary>
public virtual BoundingBox MapToBoundingBox(Rect rect)
public BoundingBox MapToBoundingBox(Rect rect)
{
var southWest = MapToLocation(rect.X, rect.Y);
var northEast = MapToLocation(rect.X + rect.Width, rect.Y + rect.Height);
@ -167,7 +167,7 @@ namespace MapControl
/// Transforms a LatLonBox in geographic coordinates to a rotated Rect in projected map coordinates.
/// Returns null when the LatLonBox can not be transformed.
/// </summary>
public virtual (Rect?, double) LatLonBoxToMap(LatLonBox latLonBox)
public (Rect?, double) LatLonBoxToMap(LatLonBox latLonBox)
{
Rect? rect = null;
var rotation = 0d;