ClemensFischer/XAML-Map-Control
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Version 5.0.1: Reworked MapBase and MapProjection

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ClemensF 2020-04-01 18:04:39 +02:00
parent 81ec8e7eb2
commit 2b41d298f4
4 changed files with 22 additions and 26 deletions
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20
MapControl/Shared/ViewTransform.cs
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@ -19,6 +19,16 @@ namespace MapControl
/// </summary>
public class ViewTransform
{
public static double ZoomLevelToScale(double zoomLevel)
{
return 256d * Math.Pow(2d, zoomLevel) / (360d * MapProjection.Wgs84MetersPerDegree);
}
public static double ScaleToZoomLevel(double scale)
{
return Math.Log(scale * 360d * MapProjection.Wgs84MetersPerDegree / 256d, 2d);
}
/// <summary>
/// Gets the scaling factor from cartesian map coordinates to view coordinates,
/// i.e. pixels per meter.
@ -117,15 +127,5 @@ namespace MapControl
return new MatrixTransform { Matrix = transform }
.TransformBounds(new Rect(0d, 0d, viewSize.Width, viewSize.Height));
}
public static double ZoomLevelToScale(double zoomLevel)
{
return 256d * Math.Pow(2d, zoomLevel) / (360d * MapProjection.Wgs84MetersPerDegree);
}
public static double ScaleToZoomLevel(double scale)
{
return Math.Log(scale * 360d * MapProjection.Wgs84MetersPerDegree / 256d, 2d);
}
}
}