ClemensFischer/XAML-Map-Control
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MapPanel longitude coercion

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ClemensFischer 2024-08-29 21:35:58 +02:00
parent 94c3faf805
commit 4b0a0d29fd
9 changed files with 110 additions and 189 deletions
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8
MapControl/Shared/MapBase.cs
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@ -31,6 +31,10 @@ namespace MapControl
/// </summary>
public partial class MapBase : MapPanel
{
public static double ZoomLevelToScale(double zoomLevel) => 256d * Math.Pow(2d, zoomLevel) / (360d * MapProjection.Wgs84MeterPerDegree);
public static double ScaleToZoomLevel(double scale) => Math.Log(scale * 360d * MapProjection.Wgs84MeterPerDegree / 256d, 2d);
public static TimeSpan ImageFadeDuration { get; set; } = TimeSpan.FromSeconds(0.1);
public static readonly DependencyProperty AnimationDurationProperty =
@ -361,7 +365,7 @@ namespace MapControl
{
var scale = Math.Min(ActualWidth / rect.Value.Width, ActualHeight / rect.Value.Height);
TargetZoomLevel = ViewTransform.ScaleToZoomLevel(scale);
TargetZoomLevel = ScaleToZoomLevel(scale);
TargetCenter = targetCenter;
TargetHeading = 0d;
}
@ -497,7 +501,7 @@ namespace MapControl
private void UpdateTransform(bool resetTransformCenter = false, bool projectionChanged = false)
{
var transformCenterChanged = false;
var viewScale = ViewTransform.ZoomLevelToScale(ZoomLevel);
var viewScale = ZoomLevelToScale(ZoomLevel);
var projection = MapProjection;
projection.Center = ProjectionCenter ?? Center;