ClemensFischer/XAML-Map-Control
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Minor tile layer updates

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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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// 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;
}
}
}