private void RenderToBuffer()
{
var levelIndex = Utilities.GetNearestLevel(_source.Schema.Resolutions, _mapTransform.UnitsPerPixel);
using (var g = Graphics.FromImage(_buffer))
{
g.Clear(Color.White);
foreach (var tileInfo in _source.Schema.GetTileInfos(_mapTransform.Extent, levelIndex))
{
var res = _source.GetTile(tileInfo);
var extent = _mapTransform.WorldToMap(tileInfo.Extent.MinX, tileInfo.Extent.MinY,
tileInfo.Extent.MaxX, tileInfo.Extent.MaxY);
if (res != null)
{
var tileStream = new MemoryStream(res);
var tile = (Bitmap)Image.FromStream(tileStream);
DrawTile(_source.Schema, g, tile, extent, tileInfo.Index.Level);
}
var roundedExtent = RoundToPixel(extent);
g.DrawRectangle(Pens.Black, roundedExtent);
g.DrawString(string.Format("({2}:{0},{1})", tileInfo.Index.Col, tileInfo.Index.Row, tileInfo.Index.Level), new Font("Arial", 8, FontStyle.Regular), Brushes.OrangeRed, roundedExtent, new StringFormat {
Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center, Trimming = StringTrimming.None
});
}
g.DrawRectangle(new Pen(Color.Tomato, 2), RoundToPixel(_mapTransform.WorldToMap(_source.Schema.Extent)));
}
tsslExtent.Text = $@"[({_mapTransform.Extent.MinX:N}/{_mapTransform.Extent.MinY:N})/({_mapTransform.Extent.MaxX:N}/{_mapTransform.Extent.MaxY:N})]";
picMap.Image = _buffer;
}
static void Main()
{
// Dear BruTile maintainer,
// If the code in this file does not compile and needs changes you
// also need to update the 'getting started' sample in the wiki.
// 1) Create a tile source
// This is an example that creates the OpenStreetMap tile source:
var tileSource = new HttpTileSource(new GlobalSphericalMercator(0, 18),
"http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",
new[] { "a", "b", "c" }, "OSM");
// 2) Calculate which tiles you need
// the extent of the visible map changes but lets start with the whole world
var extent = new Extent(-20037508, -20037508, 20037508, 20037508);
var screenWidthInPixels = 400; // The width of the map on screen in pixels
var resolution = extent.Width / screenWidthInPixels;
var tileInfos = tileSource.Schema.GetTileInfos(extent, resolution);
// 3) Fetch the tiles from the service
Console.WriteLine("Show tile info");
foreach (var tileInfo in tileInfos)
{
var tile = tileSource.GetTile(tileInfo);
Console.WriteLine(
$"tile col: {tileInfo.Index.Col}, " +
$"tile row: {tileInfo.Index.Row}, " +
$"tile level: {tileInfo.Index.Level} , " +
$"tile size {tile.Length}");
}
// 4) Try some of the known tile sources
// You can easily create an ITileSource for a number of predefined tile servers
// with single line statements like:
var tileSource1 = KnownTileSources.Create(); // The default is OpenStreetMap
var tileSource2 = KnownTileSources.Create(KnownTileSource.BingAerial);
var tileSource3 = KnownTileSources.Create(KnownTileSource.BingHybrid);
var tileSource4 = KnownTileSources.Create(KnownTileSource.StamenTonerLite);
var tileSource5 = KnownTileSources.Create(KnownTileSource.EsriWorldShadedRelief);
// 6) Use MBTiles, the sqlite format for tile data, to work with tiles stored on your device.
var mbtilesTilesource = new MbTilesTileSource(new SQLiteConnectionString("Resources/world.mbtiles", false));
var mbTilesTile = mbtilesTilesource.GetTile(new TileInfo {
Index = new TileIndex(0, 0, 0)
});
Console.WriteLine();
Console.WriteLine("MBTiles");
Console.WriteLine($"This is a byte array of an image file loaded from MBTiles with size: {mbTilesTile.Length}");
}
public void FetchTiles()
{
// arrange
MbTilesTileSource.SetPlatform(new SQLitePlatformWin32());
const string path = ".\\Resources\\test.mbtiles";
var tileSource = new MbTilesTileSource(new SQLiteConnectionString(path, false));
var extent = tileSource.Extent;
var tileInfos = tileSource.Schema.GetTileInfos(extent, "1").ToList();
// act
var data = tileSource.GetTile(tileInfos.First());
// assert
Assert.True(data.Length > 0);
}
public void FetchTiles()
{
// arrange
MbTilesTileSource.SetPlatform(new SQLitePlatformWin32());
const string path = ".\\Resources\\test.mbtiles";
var tileSource = new MbTilesTileSource(new SQLiteConnectionString(path, false));
var extent = tileSource.Extent;
var tileInfos = tileSource.Schema.GetTileInfos(extent, "1").ToList();
// act
var data = tileSource.GetTile(tileInfos.First());
// assert
Assert.True(data.Length > 0);
}
public void SchemaGeneratedFromMbTilesWithSchemaInConstructor()
{
// arrange
SQLitePCL.Batteries.Init();
var path = Path.Combine(Paths.AssemblyDirectory, "Resources", "torrejon-de-ardoz.mbtiles");
// act
var tileSource = new MbTilesTileSource(new SQLiteConnectionString(path, false, _encryptionKey), new GlobalSphericalMercator("png", YAxis.TMS, null));
// assert
var tile = tileSource.GetTile(new TileInfo {
Index = new TileIndex(2006, 2552, "12")
});
Assert.NotNull(tile);
}
public void SchemaGeneratedFromMbTilesWithSchemaInConstructor()
{
// arrange
SQLitePCL.Batteries.Init();
const string path = ".\\Resources\\torrejon-de-ardoz.mbtiles";
// act
var tileSource = new MbTilesTileSource(new SQLiteConnectionString(path, false), new GlobalSphericalMercator("png", YAxis.TMS, null));
// assert
var tile = tileSource.GetTile(new TileInfo {
Index = new TileIndex(2006, 2552, "12")
});
Assert.NotNull(tile);
}
public void FetchTiles()
{
// arrange
var path = Path.Combine(Paths.AssemblyDirectory, "Resources", "test.mbtiles");
var tileSource = new MbTilesTileSource(new SQLiteConnectionString(path, false, _encryptionKey));
var extent = tileSource.Schema.Extent;
var tileInfos = tileSource.Schema.GetTileInfos(extent, "1").ToList();
tileSource.Attribution = new Attribution("attribution", "url");
// act
var data = tileSource.GetTile(tileInfos.First());
// assert
Assert.True(data.Length > 0);
Assert.AreEqual(MbTilesType.BaseLayer, tileSource.Type);
Assert.AreEqual("attribution", tileSource.Attribution.Text);
}
public void FetchTiles()
{
// arrange
SQLitePCL.Batteries.Init();
const string path = ".\\Resources\\test.mbtiles";
var tileSource = new MbTilesTileSource(new SQLiteConnectionString(path, false));
var extent = tileSource.Schema.Extent;
var tileInfos = tileSource.Schema.GetTileInfos(extent, "1").ToList();
tileSource.Attribution = new Attribution("attribution", "url");
// act
var data = tileSource.GetTile(tileInfos.First());
// assert
Assert.True(data.Length > 0);
Assert.AreEqual(MbTilesType.BaseLayer, tileSource.Type);
Assert.AreEqual("attribution", tileSource.Attribution.Text);
}