Mapsui.Providers.Features.New C# (CSharp) Метод

        public IFeature New()
        {
            // At this point it is possible to initialize an improved version of
            // Feature with a specifed set of columns.
            return new Feature();
        }

        public IEnumerable<IFeature> FetchTiles(BoundingBox boundingBox, double resolution)
        {
            var extent = new Extent(boundingBox.Min.X, boundingBox.Min.Y, boundingBox.Max.X, boundingBox.Max.Y);
            var levelId = BruTile.Utilities.GetNearestLevel(_source.Schema.Resolutions, resolution);
            var infos = _source.Schema.GetTileInfos(extent, levelId).ToList();

            ICollection<WaitHandle> waitHandles = new List<WaitHandle>();
                        
            foreach (TileInfo info in infos)    
            {
                if (_bitmaps.Find(info.Index) != null) continue;
                if (_queue.Contains(info.Index)) continue;
                var waitHandle = new AutoResetEvent(false);
                waitHandles.Add(waitHandle);
                _queue.Add(info.Index);
                ThreadPool.QueueUserWorkItem(GetTileOnThread, new object[] { _source, info, _bitmaps, waitHandle });
            }

            WaitHandle.WaitAll(waitHandles.ToArray());
            
            IFeatures features = new Features();
            foreach (TileInfo info in infos)
            {
                byte[] bitmap = _bitmaps.Find(info.Index);
                if (bitmap == null) continue;
                IRaster raster = new Raster(new MemoryStream(bitmap), new BoundingBox(info.Extent.MinX, info.Extent.MinY, info.Extent.MaxX, info.Extent.MaxY));
                IFeature feature = features.New();
                feature.Geometry = raster;
                features.Add(feature);
            }
            return features;
        }