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Add IsBaseMapLayer property

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This commit is contained in:
Clemens 2021-11-11 22:27:57 +01:00
parent 681da9b625
commit c17092cd38
4 changed files with 12 additions and 7 deletions
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2
MapControl/Shared/MapTileLayer.cs
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@ -211,7 +211,7 @@ namespace MapControl
}
else
{
var minZoomLevel = LoadBackgroundTiles
var minZoomLevel = IsBaseMapLayer
? Math.Max(TileMatrix.ZoomLevel - MaxBackgroundLevels, MinZoomLevel)
: maxZoomLevel;

9
MapControl/Shared/MapTileLayerBase.cs
View file

@ -176,9 +176,14 @@ namespace MapControl
}
}
protected bool LoadBackgroundTiles
protected bool IsBaseMapLayer
{
get { return this == parentMap?.MapLayer; }
get
{
return parentMap != null
&& parentMap.Children.Count > 0
&& parentMap.Children[0] == this;
}
}
private async void OnViewportChanged(object sender, ViewportChangedEventArgs e)

6
MapControl/Shared/WmtsTileLayer.cs
View file

@ -120,15 +120,15 @@ namespace MapControl
var layersChanged = false;
var maxScale = 1.001 * ParentMap.ViewTransform.Scale; // avoid rounding issues
// show all TileMatrix layers with Scale <= maxScale, at least the first layer
// show all WmtsTileMatrix layers with Scale <= maxScale, at least the first layer
//
var currentMatrixes = tileMatrixSet.TileMatrixes
.Where((matrix, i) => i == 0 || matrix.Scale <= maxScale)
.ToList();
if (!LoadBackgroundTiles)
if (!IsBaseMapLayer) // show only the last layer
{
currentMatrixes = currentMatrixes.Skip(currentMatrixes.Count - 1).ToList(); // last element only
currentMatrixes = currentMatrixes.Skip(currentMatrixes.Count - 1).ToList();
}
else if (currentMatrixes.Count > MaxBackgroundLevels + 1)
{

2
SampleApps/ProjectionDemo/ProjectionDemo.csproj
View file

@ -2,7 +2,7 @@
<PropertyGroup>
<OutputType>WinExe</OutputType>
<TargetFramework>net5.0-windows</TargetFramework>
<TargetFramework>net6.0-windows</TargetFramework>
<UseWPF>true</UseWPF>
<Version>6.1.0</Version>
<Authors>Clemens Fischer</Authors>