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Fixed moving transform center across dateline.

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ClemensFischer 2022-11-24 23:24:51 +01:00
parent 7fbbf66acb
commit afc93704d9
7 changed files with 63 additions and 55 deletions
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15
MapControl/Shared/ViewportChangedEventArgs.cs
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@ -8,22 +8,23 @@ namespace MapControl
{
public class ViewportChangedEventArgs : EventArgs
{
public ViewportChangedEventArgs(bool projectionChanged = false, double longitudeOffset = 0d)
public ViewportChangedEventArgs(bool projectionChanged = false, bool transformCenterChanged = false)
{
ProjectionChanged = projectionChanged;
LongitudeOffset = longitudeOffset;
TransformCenterChanged = transformCenterChanged;
}
/// <summary>
/// Indicates if the map projection has changed. Used to control when a MapTileLayer or MapImageLayer
/// should be updated immediately, or MapPath Data in projected map coordinates should be recalculated.
/// Indicates that the map projection has changed. Used to control when
/// a MapTileLayer or a MapImageLayer should be updated immediately,
/// or MapPath Data in projected map coordinates should be recalculated.
/// </summary>
public bool ProjectionChanged { get; }
/// <summary>
/// Offset of the map center longitude value from the previous viewport.
/// Used to detect if the map center has moved across 180° longitude.
/// Indicates that the view transform center has moved across the dateline.
/// Used to control when a MapTileLayer should be updated immediately.
/// </summary>
public double LongitudeOffset { get; }
public bool TransformCenterChanged { get; }
}
}