ClemensFischer/XAML-Map-Control
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Improve MapRect

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This commit is contained in:
ClemensFischer 2022-12-07 17:00:25 +01:00
parent 07a8e454d5
commit 8bb2555533
10 changed files with 80 additions and 65 deletions
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23
MapControl/Shared/MapProjection.cs
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@ -82,14 +82,12 @@ namespace MapControl
/// Transforms a MapRect in projected map coordinates to a BoundingBox in geographic coordinates.
/// Returns null when the MapRect can not be transformed.
/// </summary>
public virtual BoundingBox MapRectToBoundingBox(MapRect rect)
public virtual BoundingBox MapRectToBoundingBox(MapRect mapRect)
{
var sw = MapToLocation(new Point(rect.X, rect.Y));
var ne = MapToLocation(new Point(rect.X + rect.Width, rect.Y + rect.Height));
var sw = MapToLocation(new Point(mapRect.XMin, mapRect.YMin));
var ne = MapToLocation(new Point(mapRect.XMax, mapRect.YMax));
return sw != null && ne != null
? new BoundingBox(sw.Latitude, sw.Longitude, ne.Latitude, ne.Longitude)
: null;
return sw != null && ne != null ? new BoundingBox(sw, ne) : null;
}
/// <summary>
@ -105,10 +103,17 @@ namespace MapControl
/// <summary>
/// Gets the BBOX parameter value for a WMS GetMap request.
/// </summary>
public virtual string GetBboxValue(MapRect rect)
public virtual string GetBboxValue(MapRect mapRect)
{
return string.Format(CultureInfo.InvariantCulture,
"{0},{1},{2},{3}", rect.X, rect.Y, (rect.X + rect.Width), (rect.Y + rect.Height));
// Truncate bounding box to 1 cm precision.
//
const double p = 0.01;
return string.Format(CultureInfo.InvariantCulture, "{0},{1},{2},{3}",
p * Math.Ceiling(mapRect.XMin / p),
p * Math.Ceiling(mapRect.YMin / p),
p * Math.Floor(mapRect.XMax / p),
p * Math.Floor(mapRect.YMax / p));
}
}
}