public void OverlayTiles_should_not_throw_When_array_is_zero_length() { var imageList = new List <byte[]> { Convert.FromBase64String("") }; _ = TileOverlay.OverlayTiles(imageList); }
protected override async Task <ContractExecutionResult> ProcessAsyncEx <T>(T item) { List <FileData> files = null; int zoomLevel = 0; Point topLeftTile = null; int numTiles = 0; BoundingBox2DLatLon bbox = null; if (item is DxfTileRequest request) { files = request.files?.ToList(); bbox = request.bbox; //Calculate zoom level zoomLevel = TileServiceUtils.CalculateZoomLevel(request.bbox.TopRightLat - request.bbox.BottomLeftLat, request.bbox.TopRightLon - request.bbox.BottomLeftLon); log.LogDebug("DxfTileExecutor: BBOX differences {0} {1} {2}", request.bbox.TopRightLat - request.bbox.BottomLeftLat, request.bbox.TopRightLon - request.bbox.BottomLeftLon, zoomLevel); numTiles = TileServiceUtils.NumberOfTiles(zoomLevel); Point topLeftLatLng = new Point(request.bbox.TopRightLat.LatRadiansToDegrees(), request.bbox.BottomLeftLon.LonRadiansToDegrees()); topLeftTile = WebMercatorProjection.LatLngToTile(topLeftLatLng, numTiles); log.LogDebug($"DxfTileExecutor: zoomLevel={zoomLevel}, numTiles={numTiles}, xtile={topLeftTile.x}, ytile={topLeftTile.y}"); } else if (item is DxfTile3dRequest request3d) { files = request3d.files?.ToList(); zoomLevel = request3d.zoomLevel; numTiles = TileServiceUtils.NumberOfTiles(zoomLevel); topLeftTile = new Point { x = request3d.xTile, y = request3d.yTile }; } else { ThrowRequestTypeCastException <DxfTileRequest>(); } log.LogDebug($"DxfTileExecutor: {files?.Count ?? 0} files"); //Short circuit overlaying if there no files to overlay as ForAll is an expensive operation if (files == null || !files.Any()) { byte[] emptyOverlayData; using (var bitmap = new Image <Rgba32>(WebMercatorProjection.TILE_SIZE, WebMercatorProjection.TILE_SIZE)) { emptyOverlayData = bitmap.BitmapToByteArray(); } return(new TileResult(emptyOverlayData)); } log.LogDebug(string.Join(",", files.Select(f => f.Name).ToList())); var tileList = new List <byte[]>(); const string DATA_OCEAN_ROOT_FOLDER_ID_KEY = "DATA_OCEAN_ROOT_FOLDER_ID"; var dataOceanRootFolder = configStore.GetValueString(DATA_OCEAN_ROOT_FOLDER_ID_KEY); if (string.IsNullOrEmpty(dataOceanRootFolder)) { throw new ArgumentException($"Missing environment variable {DATA_OCEAN_ROOT_FOLDER_ID_KEY}"); } //For GeoTIFF files, use the latest version of a file var geoTiffFiles = files.Where(x => x.ImportedFileType == ImportedFileType.GeoTiff).ToList(); if (geoTiffFiles.Any()) { //Find any with multiple versions and remove old ones from the list var latestFiles = geoTiffFiles.GroupBy(g => g.Name).Select(g => g.OrderBy(o => o.SurveyedUtc).Last()).ToList(); foreach (var geoTiffFile in geoTiffFiles) { if (!latestFiles.Contains(geoTiffFile)) { files.Remove(geoTiffFile); } } } var fileTasks = files.Select(async file => { //foreach (var file in request.files) //Check file type to see if it has tiles if (file.ImportedFileType == ImportedFileType.Linework || file.ImportedFileType == ImportedFileType.GeoTiff) { var fullPath = DataOceanFileUtil.DataOceanPath(dataOceanRootFolder, file.CustomerUid, file.ProjectUid); var fileName = DataOceanFileUtil.DataOceanFileName(file.Name, file.ImportedFileType == ImportedFileType.SurveyedSurface || file.ImportedFileType == ImportedFileType.GeoTiff, Guid.Parse(file.ImportedFileUid), file.SurveyedUtc); fileName = DataOceanFileUtil.GeneratedFileName(fileName, file.ImportedFileType); if (zoomLevel >= file.MinZoomLevel) { byte[] tileData = null; if (zoomLevel <= file.MaxZoomLevel || file.MaxZoomLevel == 0) //0 means not calculated { tileData = await GetTileAtRequestedZoom(topLeftTile, zoomLevel, fullPath, fileName); } else if (zoomLevel - file.MaxZoomLevel <= 5) //Don't try to scale if the difference is too excessive { tileData = await GetTileAtHigherZoom(topLeftTile, zoomLevel, fullPath, fileName, file.MaxZoomLevel, numTiles); } else { log.LogDebug( "DxfTileExecutor: difference between requested and maximum zooms too large; not even going to try to scale tile"); } if (tileData != null && tileData.Length > 0) { tileList.Add(tileData); } } } }); await Task.WhenAll(fileTasks); log.LogDebug($"DxfTileExecutor: Overlaying {tileList.Count} tiles"); byte[] overlayData = TileOverlay.OverlayTiles(tileList); return(new TileResult(overlayData)); }