[TASK] Initial commit with basic product setup

Assets/Mapbox SDK/Mapbox/Unity/MeshGeneration/Factories/ImageDataFetcher.cs

@@ -0,0 +1,54 @@
+using Mapbox.Map;
+using Mapbox.Unity.MeshGeneration.Data;
+using Mapbox.Unity.MeshGeneration.Enums;
+using System;
+using System.Collections.Generic;
+
+public class ImageDataFetcher : DataFetcher
+{
+	public Action<UnityTile, RasterTile> DataRecieved = (t, s) => { };
+	public Action<UnityTile, RasterTile, TileErrorEventArgs> FetchingError = (t, r, s) => { };
+
+	//tile here should be totally optional and used only not to have keep a dictionary in terrain factory base
+	public override void FetchData(DataFetcherParameters parameters)
+	{
+		var imageDataParameters = parameters as ImageDataFetcherParameters;
+		if(imageDataParameters == null)
+		{
+			return;
+		}
+		RasterTile rasterTile;
+		if (imageDataParameters.mapid.StartsWith("mapbox://", StringComparison.Ordinal))
+		{
+			rasterTile = imageDataParameters.useRetina ? new RetinaRasterTile() : new RasterTile();
+		}
+		else
+		{
+			rasterTile = imageDataParameters.useRetina ? new ClassicRetinaRasterTile() : new ClassicRasterTile();
+		}
+
+		if (imageDataParameters.tile != null)
+		{
+			imageDataParameters.tile.AddTile(rasterTile);
+		}
+
+		rasterTile.Initialize(_fileSource, imageDataParameters.tile.CanonicalTileId, imageDataParameters.mapid, () =>
+		{
+			if (imageDataParameters.tile.CanonicalTileId != rasterTile.Id)
+			{
+				//this means tile object is recycled and reused. Returned data doesn't belong to this tile but probably the previous one. So we're trashing it.
+				return;
+			}
+
+			if (rasterTile.HasError)
+			{
+				FetchingError(imageDataParameters.tile, rasterTile, new TileErrorEventArgs(imageDataParameters.tile.CanonicalTileId, rasterTile.GetType(), imageDataParameters.tile, rasterTile.Exceptions));
+			}
+			else
+			{
+				DataRecieved(imageDataParameters.tile, rasterTile);
+			}
+
+		});
+	}
+}