/// <summary> /// Create tile layer for given tile source /// </summary> /// <param name="source">Tile source to use for this layer</param> /// <param name="minTiles">Minimum number of tiles to cache</param> /// <param name="maxTiles">Maximum number of tiles to cache</param> /// <param name="maxRetries">Unused</param> /// <param name="dataFetchStrategy">Strategy to get list of tiles for given extent</param> /// <param name="renderFetchStrategy"></param> /// <param name="minExtraTiles">Number of minimum extra tiles for memory cache</param> /// <param name="maxExtraTiles">Number of maximum extra tiles for memory cache</param> // ReSharper disable once UnusedParameter.Local // Is public and won't break this now public TileLayer(ITileSource source = null, int minTiles = 200, int maxTiles = 300, IDataFetchStrategy dataFetchStrategy = null, IRenderFetchStrategy renderFetchStrategy = null, int minExtraTiles = -1, int maxExtraTiles = -1, Func <TileInfo, Feature> fetchTileAsFeature = null) { MemoryCache = new MemoryCache <Feature>(minTiles, maxTiles); Style = new VectorStyle { Outline = { Color = Color.FromArgb(0, 0, 0, 0) } }; // initialize with transparent outline _tileSource = source; if (_tileSource != null) { if (Attribution == null) { Attribution = new Hyperlink(); } Attribution.Text = _tileSource.Attribution?.Text; Attribution.Url = _tileSource.Attribution?.Url; } _envelope = _tileSource?.Schema?.Extent.ToBoundingBox(); dataFetchStrategy = dataFetchStrategy ?? new DataFetchStrategy(3); _renderFetchStrategy = renderFetchStrategy ?? new RenderFetchStrategy(); _minExtraTiles = minExtraTiles; _maxExtraTiles = maxExtraTiles; _tileFetchDispatcher = new TileFetchDispatcher(MemoryCache, source.Schema, fetchTileAsFeature ?? ToFeature, dataFetchStrategy); _tileFetchDispatcher.DataChanged += TileFetchDispatcherOnDataChanged; _tileFetchDispatcher.PropertyChanged += TileFetchDispatcherOnPropertyChanged; }
public TileFetchDispatcher( ITileCache <Feature> tileCache, ITileSchema tileSchema, Func <TileInfo, Feature> fetchTileAsFeature, IDataFetchStrategy dataFetchStrategy = null) { _tileCache = tileCache; _tileSchema = tileSchema; _fetchTileAsFeature = fetchTileAsFeature; _dataFetchStrategy = dataFetchStrategy ?? new MinimalDataFetchStrategy(); _fetchMachine = new FetchMachine(this); }