ClemensFischer/XAML-Map-Control
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Minor tile layer updates

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This commit is contained in:
ClemensF 2020-10-25 16:09:09 +01:00
parent ea992d3d0f
commit ddf77441f2
10 changed files with 124 additions and 86 deletions
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42
MapControl/Shared/BoundingBoxTileSource.cs Normal file
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@ -0,0 +1,42 @@
// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
// © 2020 Clemens Fischer
// Licensed under the Microsoft Public License (Ms-PL)
using System;
using System.Globalization;
namespace MapControl
{
public class BoundingBoxTileSource : TileSource
{
public override Uri GetUri(int x, int y, int zoomLevel)
{
Uri uri = null;
if (UriFormat != null)
{
var tileSize = 360d / (1 << zoomLevel); // tile width in degrees
var west = MapProjection.Wgs84MetersPerDegree * (x * tileSize - 180d);
var east = MapProjection.Wgs84MetersPerDegree * ((x + 1) * tileSize - 180d);
var south = MapProjection.Wgs84MetersPerDegree * (180d - (y + 1) * tileSize);
var north = MapProjection.Wgs84MetersPerDegree * (180d - y * tileSize);
if (UriFormat.Contains("{bbox}"))
{
uri = new Uri(UriFormat.Replace("{bbox}", string.Format(CultureInfo.InvariantCulture,
"{0:F2},{1:F2},{2:F2},{3:F2}", west, south, east, north)));
}
else
{
uri = new Uri(UriFormat
.Replace("{west}", west.ToString("F2", CultureInfo.InvariantCulture))
.Replace("{south}", south.ToString("F2", CultureInfo.InvariantCulture))
.Replace("{east}", east.ToString("F2", CultureInfo.InvariantCulture))
.Replace("{north}", north.ToString("F2", CultureInfo.InvariantCulture)));
}
}
return uri;
}
}
}

2
MapControl/Shared/MapImageLayer.cs
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@ -216,7 +216,7 @@ namespace MapControl
}
}
protected virtual async Task UpdateImageAsync()
protected async Task UpdateImageAsync()
{
updateTimer.Stop();

9
MapControl/Shared/MapTileLayer.cs
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@ -37,8 +37,7 @@ namespace MapControl
{
TileSource = new TileSource { UriFormat = "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png" },
SourceName = "OpenStreetMap",
Description = "© [OpenStreetMap Contributors](http://www.openstreetmap.org/copyright)",
MaxZoomLevel = 19
Description = "© [OpenStreetMap Contributors](http://www.openstreetmap.org/copyright)"
};
}
}
@ -47,7 +46,7 @@ namespace MapControl
nameof(MinZoomLevel), typeof(int), typeof(MapTileLayer), new PropertyMetadata(0));
public static readonly DependencyProperty MaxZoomLevelProperty = DependencyProperty.Register(
nameof(MaxZoomLevel), typeof(int), typeof(MapTileLayer), new PropertyMetadata(18));
nameof(MaxZoomLevel), typeof(int), typeof(MapTileLayer), new PropertyMetadata(19));
public MapTileLayer()
: this(new TileImageLoader())
@ -73,7 +72,7 @@ namespace MapControl
}
/// <summary>
/// Maximum zoom level supported by the MapTileLayer. Default value is 18.
/// Maximum zoom level supported by the MapTileLayer. Default value is 19.
/// </summary>
public int MaxZoomLevel
{
@ -92,8 +91,6 @@ namespace MapControl
protected override void UpdateTileLayer()
{
UpdateTimer.Stop();
if (ParentMap == null || !ParentMap.MapProjection.IsWebMercator)
{
TileMatrix = null;

25
MapControl/Shared/MapTileLayerBase.cs
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@ -39,7 +39,7 @@ namespace MapControl
public static readonly DependencyProperty UpdateIntervalProperty = DependencyProperty.Register(
nameof(UpdateInterval), typeof(TimeSpan), typeof(MapTileLayerBase),
new PropertyMetadata(TimeSpan.FromSeconds(0.2), (o, e) => ((MapTileLayerBase)o).UpdateTimer.Interval = (TimeSpan)e.NewValue));
new PropertyMetadata(TimeSpan.FromSeconds(0.2), (o, e) => ((MapTileLayerBase)o).updateTimer.Interval = (TimeSpan)e.NewValue));
public static readonly DependencyProperty UpdateWhileViewportChangingProperty = DependencyProperty.Register(
nameof(UpdateWhileViewportChanging), typeof(bool), typeof(MapTileLayerBase), new PropertyMetadata(false));
@ -50,6 +50,7 @@ namespace MapControl
public static readonly DependencyProperty MapForegroundProperty = DependencyProperty.Register(
nameof(MapForeground), typeof(Brush), typeof(MapTileLayerBase), new PropertyMetadata(null));
private readonly DispatcherTimer updateTimer;
private MapBase parentMap;
protected MapTileLayerBase(ITileImageLoader tileImageLoader)
@ -57,16 +58,19 @@ namespace MapControl
RenderTransform = new MatrixTransform();
TileImageLoader = tileImageLoader;
UpdateTimer = new DispatcherTimer { Interval = UpdateInterval };
UpdateTimer.Tick += (s, e) => UpdateTileLayer();
updateTimer = new DispatcherTimer { Interval = UpdateInterval };
updateTimer.Tick += (s, e) =>
{
updateTimer.Stop();
UpdateTileLayer();
};
MapPanel.InitMapElement(this);
}
public ITileImageLoader TileImageLoader { get; }
public DispatcherTimer UpdateTimer { get; }
/// <summary>
/// Provides map tile URIs or images.
/// </summary>
@ -145,6 +149,8 @@ namespace MapControl
get { return parentMap; }
set
{
updateTimer.Stop();
if (parentMap != null)
{
parentMap.ViewportChanged -= OnViewportChanged;
@ -165,20 +171,21 @@ namespace MapControl
{
if (Children.Count == 0 || e.ProjectionChanged || Math.Abs(e.LongitudeOffset) > 180d)
{
updateTimer.Stop();
UpdateTileLayer(); // update immediately when projection has changed or center has moved across 180° longitude
}
else
{
SetRenderTransform();
if (UpdateTimer.IsEnabled && !UpdateWhileViewportChanging)
if (updateTimer.IsEnabled && !UpdateWhileViewportChanging)
{
UpdateTimer.Stop(); // restart
updateTimer.Stop(); // restart
}
if (!UpdateTimer.IsEnabled)
if (!updateTimer.IsEnabled)
{
UpdateTimer.Start();
updateTimer.Start();
}
}
}

26
MapControl/Shared/TileSource.cs
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@ -3,7 +3,6 @@
// Licensed under the Microsoft Public License (Ms-PL)
using System;
using System.Globalization;
using System.Threading.Tasks;
#if WINDOWS_UWP
using Windows.UI.Xaml.Media;
@ -89,29 +88,4 @@ namespace MapControl
return base.GetUri(x, (1 << zoomLevel) - 1 - y, zoomLevel);
}
}
public class BoundingBoxTileSource : TileSource
{
public override Uri GetUri(int x, int y, int zoomLevel)
{
Uri uri = null;
if (UriFormat != null)
{
var tileSize = 360d / (1 << zoomLevel); // tile width in degrees
var west = MapProjection.Wgs84MetersPerDegree * (x * tileSize - 180d);
var east = MapProjection.Wgs84MetersPerDegree * ((x + 1) * tileSize - 180d);
var south = MapProjection.Wgs84MetersPerDegree * (180d - (y + 1) * tileSize);
var north = MapProjection.Wgs84MetersPerDegree * (180d - y * tileSize);
uri = new Uri(UriFormat
.Replace("{west}", west.ToString(CultureInfo.InvariantCulture))
.Replace("{south}", south.ToString(CultureInfo.InvariantCulture))
.Replace("{east}", east.ToString(CultureInfo.InvariantCulture))
.Replace("{north}", north.ToString(CultureInfo.InvariantCulture)));
}
return uri;
}
}
}

2
MapControl/Shared/WmtsTileLayer.cs
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@ -90,8 +90,6 @@ namespace MapControl
protected override void UpdateTileLayer()
{
UpdateTimer.Stop();
if (ParentMap == null ||
!TileMatrixSets.TryGetValue(ParentMap.MapProjection.CrsId, out WmtsTileMatrixSet tileMatrixSet))
{

3
MapControl/UWP/MapControl.UWP.csproj
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@ -59,6 +59,9 @@
<Compile Include="..\Shared\BoundingBox.cs">
<Link>BoundingBox.cs</Link>
</Compile>
<Compile Include="..\Shared\BoundingBoxTileSource.cs">
<Link>BoundingBoxTileSource.cs</Link>
</Compile>
<Compile Include="..\Shared\CenteredBoundingBox.cs">
<Link>CenteredBoundingBox.cs</Link>
</Compile>