/// <summary>
/// Generates a URI at which to get the data for a tile.
/// </summary>
/// <param name="info">Information about a tile.</param>
/// <returns>The URI at which to get the data for the specified tile.</returns>
public Uri GetUri(TileInfo info)
{
var url = new StringBuilder(_baseUrl.AbsoluteUri);
url.Append("&SERVICE=WMS");
if (!string.IsNullOrEmpty(_version))
{
url.AppendFormat("&VERSION={0}", _version);
}
url.Append("&REQUEST=GetMap");
url.AppendFormat("&BBOX={0}", TileTransform.TileToWorld(new TileRange(info.Index.Row, info.Index.Col), info.Index.Level, _schema));
url.AppendFormat("&FORMAT={0}", _schema.Format);
url.AppendFormat("&WIDTH={0}", _schema.Width);
url.AppendFormat("&HEIGHT={0}", _schema.Height);
var crsFormat = !string.IsNullOrEmpty(_version) && string.CompareOrdinal(_version, "1.3.0") >= 0 ? "&CRS={0}" : "&SRS={0}";
url.AppendFormat(crsFormat, _schema.Srs);
url.AppendFormat("&LAYERS={0}", ToCommaSeparatedValues(_layers));
if (_styles != null && _styles.Count > 0)
{
url.AppendFormat("&STYLES={0}", ToCommaSeparatedValues(_styles));
}
AppendCustomParameters(url);
return(new Uri(url.ToString()));
}
private void RequestTiles(TmsGlobalGeodeticTileSchema schema, TileRange tileRange, List <TileInfo> tiles)
{
//immediately draw placeholder tile and fire request for texture and height. Depending on which one returns first, update place holder.
foreach (var t in tiles)
{
//draw placeholder tile
var tile = DrawPlaceHolder(tileRange, t);
tileDb.Add(new Vector3(t.Index.Col, t.Index.Row, int.Parse(t.Index.Level)), tile);
//get tile texture data
string surfaceUrl = "";
switch (surface.Service)
{
case DataService.WMS:
var subtileExtent = TileTransform.TileToWorld(new TileRange(t.Index.Col, t.Index.Row), t.Index.Level.ToString(), schema);
surfaceUrl = surface.Url.Replace("{xMin}", subtileExtent.MinX.ToString()).Replace("{yMin}", subtileExtent.MinY.ToString()).Replace("{xMax}", subtileExtent.MaxX.ToString()).Replace("{yMax}", subtileExtent.MaxY.ToString()).Replace(",", ".");
break;
case DataService.TMS:
surfaceUrl = surface.Url.Replace("{x}", t.Index.Col.ToString()).Replace("{y}", t.Index.Row.ToString()).Replace("{z}", int.Parse(t.Index.Level).ToString());
break;
}
downloadQueue.Enqueue(new DownloadRequest(surfaceUrl, DataType.Surface, new Vector3(t.Index.Col, t.Index.Row, int.Parse(t.Index.Level))));
//get tile height data (
var terrainUrl = terrain.Url.Replace("{x}", t.Index.Col.ToString()).Replace("{y}", t.Index.Row.ToString()).Replace("{z}", int.Parse(t.Index.Level).ToString());
downloadQueue.Enqueue(new DownloadRequest(terrainUrl, DataType.Terrain, new Vector3(t.Index.Col, t.Index.Row, int.Parse(t.Index.Level))));
}
}
public void TileFetcherShouldBehaveProperlyWithNoisyResponses()
{
// Arrange
var schema = new GlobalSphericalMercator();
var tileSource = new TileSource(new SometimesFailingTileProvider(), schema);
var memoryCache = new MemoryCache <Feature>(14, 17);
var tileFetcher = new TileFetcher(tileSource, memoryCache);
var random = new Random(31747074);
var tiles = new List <Feature>();
// Act
for (int i = 0; i < 100; i++)
{
var randomLevel = "5";
var randomCol = random.Next(schema.GetMatrixWidth(randomLevel));
var randomRow = random.Next(schema.GetMatrixHeight(randomLevel));
var tileRange = new TileRange(randomCol - 2, randomRow - 2, 5, 5);
var unitsPerPixel = schema.Resolutions[randomLevel].UnitsPerPixel;
var extent = TileTransform.TileToWorld(tileRange, randomLevel, schema);
tileFetcher.ViewChanged(TileTransform.TileToWorld(tileRange, randomLevel, schema).ToBoundingBox(), unitsPerPixel);
var tileInfos = schema.GetTileInfos(extent, randomLevel);
foreach (var tileInfo in tileInfos)
{
tiles.Add(memoryCache.Find(tileInfo.Index));
}
}
// Assert
Assert.True(tiles.Count > 0);
Assert.True(memoryCache.TileCount == 0);
}
public void TileToWorldShouldReturnCorrectExtent()
{
// arrange
var range = new TileRange(1, 2);
var schema = new SphericalMercatorWorldSchema();
var expectedExtent = new Extent(-15028131.257989, -10018754.173189, -10018754.173189, -5009377.088389);
// act
var extent = TileTransform.TileToWorld(range, 3, schema);
// assert
Assert.AreEqual(extent.MinX, expectedExtent.MinX, 0.0001);
Assert.AreEqual(extent.MinY, expectedExtent.MinY, 0.0001);
Assert.AreEqual(extent.MaxX, expectedExtent.MaxX, 0.0001);
Assert.AreEqual(extent.MaxY, expectedExtent.MaxY, 0.0001);
}
private static List <RasterFeature> TileIndexToFeatures(TileIndex[] tileIndexes, ITileSource tileSource)
{
var features = new List <RasterFeature>();
foreach (var tileIndex in tileIndexes)
{
var tileInfo = new TileInfo
{
Index = tileIndex,
Extent = TileTransform.TileToWorld(
new TileRange(tileIndex.Col, tileIndex.Row), tileIndex.Level, tileSource.Schema)
};
var raster = new MRaster(tileSource.GetTile(tileInfo), tileInfo.Extent.ToMRect());
features.Add(new RasterFeature(raster));
}
return(features);
}
public void TileToWorldShouldReturnCorrectExtent()
{
// arrange
var range = new TileRange(1, 2);
var schema = new GlobalSphericalMercator(YAxis.TMS);
var expectedExtent = new Extent(-15028131.257989, -10018754.173189, -10018754.173189, -5009377.088389);
const double toleratedDelta = 0.01;
// act
var extent = TileTransform.TileToWorld(range, 3, schema);
// assert
Assert.AreEqual(extent.MinX, expectedExtent.MinX, toleratedDelta);
Assert.AreEqual(extent.MinY, expectedExtent.MinY, toleratedDelta);
Assert.AreEqual(extent.MaxX, expectedExtent.MaxX, toleratedDelta);
Assert.AreEqual(extent.MaxY, expectedExtent.MaxY, toleratedDelta);
}
public IEnumerable <TileInfo> GetTileInfos(Extent extent, string levelId)
{
// todo: move this method elsewhere.
var range = TileTransform.WorldToTile(extent, levelId, this);
// todo: use a method to get tilerange for full schema and intersect with requested tilerange.
var startX = Math.Max(range.FirstCol, GetMatrixFirstCol(levelId));
var stopX = Math.Min(range.FirstCol + range.ColCount, GetMatrixFirstCol(levelId) + GetMatrixWidth(levelId));
var startY = Math.Max(range.FirstRow, GetMatrixFirstRow(levelId));
var stopY = Math.Min(range.FirstRow + range.RowCount, GetMatrixFirstRow(levelId) + GetMatrixHeight(levelId));
for (var x = startX; x < stopX; x++)
{
for (var y = startY; y < stopY; y++)
{
yield return(new TileInfo
{
Extent = TileTransform.TileToWorld(new TileRange(x, y), levelId, this),
Index = new TileIndex(x, y, levelId)
});
}
}
}
private static List <IFeature> TileIndexToFeatures(TileIndex[] tileIndexes, ITileSource tileSource)
{
var features = new List <IFeature>();
foreach (var tileIndex in tileIndexes)
{
var tileInfo = new TileInfo
{
Index = tileIndex,
Extent = TileTransform.TileToWorld(
new TileRange(tileIndex.Col, tileIndex.Row), tileIndex.Level, tileSource.Schema)
};
var feature = new Feature
{
Geometry = new Raster(new MemoryStream(
tileSource.GetTile(tileInfo)), tileInfo.Extent.ToBoundingBox())
};
features.Add(feature);
}
return(features);
}
public void CreateTiles()
{
ClearTiles();
sw.Start();
var schema = new TmsGlobalGeodeticTileSchema();
var tileRange = TileTransform.WorldToTile(extent, zoomLevel.ToString(), schema);
var tilesOrigin = schema.GetTileInfos(extent, 13.ToString()).ToList(); //refactor when done experimenting scale
var tiles = schema.GetTileInfos(extent, zoomLevel.ToString()).ToList();
yOffset = (float)Math.Abs(tiles[0].Extent.MinY - tilesOrigin[0].Extent.MinY);
xOffset = (float)Math.Abs(tiles[0].Extent.MinX - tilesOrigin[0].Extent.MinX);
UnityEngine.Debug.Log(xOffset);
var folder = new GameObject("map");
//immediately draw placeholder tile and fire request for texture and height. Depending on which one returns first, update place holder.
foreach (var t in tiles)
{
//draw placeholder tile
GameObject tile = DrawPlaceHolder(tileRange, t);
tile.transform.parent = folder.transform;
tileDb.Add(new Vector3(t.Index.Col, t.Index.Row, int.Parse(t.Index.Level)), tile);
//get tile texture data
Extent subtileExtent = TileTransform.TileToWorld(new TileRange(t.Index.Col, t.Index.Row), t.Index.Level.ToString(), schema);
var wmsUrl = textureUrl.Replace("{xMin}", subtileExtent.MinX.ToString()).Replace("{yMin}", subtileExtent.MinY.ToString()).Replace("{xMax}", subtileExtent.MaxX.ToString()).Replace("{yMax}", subtileExtent.MaxY.ToString()).Replace(",", ".");
downloadQueue.Enqueue(new downloadRequest(wmsUrl, TileService.WMS, new Vector3(t.Index.Col, t.Index.Row, int.Parse(t.Index.Level))));
//get tile height data (
var qmUrl = terrainUrl.Replace("{x}", t.Index.Col.ToString()).Replace("{y}", t.Index.Row.ToString()).Replace("{z}", int.Parse(t.Index.Level).ToString());
downloadQueue.Enqueue(new downloadRequest(qmUrl, TileService.QM, new Vector3(t.Index.Col, t.Index.Row, int.Parse(t.Index.Level))));
}
}