ClemensFischer/XAML-Map-Control
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Updated ViewTransform

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ClemensFischer 2026-01-05 21:27:00 +01:00
parent 9e1c72fda9
commit 03e0258f18
8 changed files with 49 additions and 80 deletions
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24
MapControl/Shared/MapBase.cs
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@ -238,32 +238,12 @@ namespace MapControl
return MapProjection.MapToLocation(ViewTransform.ViewToMapMatrix.Transform(point));
}
/// <summary>
/// Gets a Rect in projected map coordinates that covers a rectangle in view coordinates.
/// </summary>
public Rect ViewRectToMap(double x, double y, double width, double height)
{
var viewToMap = ViewTransform.ViewToMapMatrix;
var p1 = viewToMap.Transform(new Point(x, y));
var p2 = viewToMap.Transform(new Point(x, y + height));
var p3 = viewToMap.Transform(new Point(x + width, y));
var p4 = viewToMap.Transform(new Point(x + width, y + height));
var x1 = Math.Min(p1.X, Math.Min(p2.X, Math.Min(p3.X, p4.X)));
var y1 = Math.Min(p1.Y, Math.Min(p2.Y, Math.Min(p3.Y, p4.Y)));
var x2 = Math.Max(p1.X, Math.Max(p2.X, Math.Max(p3.X, p4.X)));
var y2 = Math.Max(p1.Y, Math.Max(p2.Y, Math.Max(p3.Y, p4.Y)));
return new Rect(x1, y1, x2 - x1, y2 - y1);
}
/// <summary>
/// Gets a BoundingBox in geographic coordinates that covers a rectangle in view coordinates.
/// </summary>
public BoundingBox ViewRectToBoundingBox(double x, double y, double width, double height)
public BoundingBox ViewToBoundingBox(Rect rect)
{
return MapProjection.MapToBoundingBox(ViewRectToMap(x, y, width, height));
return MapProjection.MapToBoundingBox(ViewTransform.ViewToMapMatrix.TransformBounds(rect));
}
/// <summary>