ClemensFischer/XAML-Map-Control
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General map graticule for WPF

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Clemens 2022-03-04 22:28:18 +01:00
parent c998f19fe5
commit a07948be02
11 changed files with 414 additions and 122 deletions
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26
MapControl/Shared/MapProjection.cs
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@ -64,6 +64,7 @@ namespace MapControl
/// <summary>
/// Transforms a Point in cartesian map coordinates to a Location in geographic coordinates.
/// Returns null when the Point can not be transformed.
/// </summary>
public abstract Location MapToLocation(Point point);
@ -79,13 +80,16 @@ namespace MapControl
/// <summary>
/// Transforms a Rect in cartesian map coordinates to a BoundingBox in geographic coordinates.
/// Returns null when the Rect can not be transformed.
/// </summary>
public virtual BoundingBox RectToBoundingBox(Rect rect)
{
var sw = MapToLocation(new Point(rect.X, rect.Y));
var ne = MapToLocation(new Point(rect.X + rect.Width, rect.Y + rect.Height));
return new BoundingBox(sw.Latitude, sw.Longitude, ne.Latitude, ne.Longitude);
return sw != null && ne != null
? new BoundingBox(sw.Latitude, sw.Longitude, ne.Latitude, ne.Longitude)
: null;
}
/// <summary>
@ -106,5 +110,25 @@ namespace MapControl
return string.Format(CultureInfo.InvariantCulture,
"{0},{1},{2},{3}", rect.X, rect.Y, (rect.X + rect.Width), (rect.Y + rect.Height));
}
/// <summary>
/// Checks if the X and Y values of a Point are neither NaN nor Infinity.
/// </summary>
public static bool IsValid(Point point)
{
return !double.IsNaN(point.X) && !double.IsInfinity(point.X) &&
!double.IsNaN(point.Y) && !double.IsInfinity(point.Y);
}
/// <summary>
/// Checks if the X, Y, Width and Height values of a Rect are neither NaN nor Infinity.
/// </summary>
public static bool IsValid(Rect rect)
{
return !double.IsNaN(rect.X) && !double.IsInfinity(rect.X) &&
!double.IsNaN(rect.Y) && !double.IsInfinity(rect.Y) &&
!double.IsNaN(rect.Width) && !double.IsInfinity(rect.Width) &&
!double.IsNaN(rect.Height) && !double.IsInfinity(rect.Height);
}
}
}