20240422

Unity/MeshGeneration/Factories/VectorDataFetcher.cs

@@ -0,0 +1,41 @@
+using Mapbox.Map;
+using Mapbox.Unity.Map;
+using Mapbox.Unity.MeshGeneration.Data;
+using Mapbox.Unity.MeshGeneration.Enums;
+using System;
+public class VectorDataFetcher : DataFetcher
+{
+	public Action<UnityTile, VectorTile> DataRecieved = (t, s) => { };
+	public Action<UnityTile, VectorTile, 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 vectorDataParameters = parameters as VectorDataFetcherParameters;
+		if(vectorDataParameters == null)
+		{
+			return;
+		}
+		var vectorTile = (vectorDataParameters.useOptimizedStyle) ? new VectorTile(vectorDataParameters.style.Id, vectorDataParameters.style.Modified) : new VectorTile();
+		if (vectorDataParameters.tile != null)
+		{
+			vectorDataParameters.tile.AddTile(vectorTile);
+		}
+		vectorTile.Initialize(_fileSource, vectorDataParameters.canonicalTileId, vectorDataParameters.tilesetId, () =>
+		{
+			if (vectorDataParameters.tile != null && vectorDataParameters.tile.CanonicalTileId != vectorTile.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 (vectorTile.HasError)
+			{
+				FetchingError(vectorDataParameters.tile, vectorTile, new TileErrorEventArgs(vectorDataParameters.canonicalTileId, vectorTile.GetType(), vectorDataParameters.tile, vectorTile.Exceptions));
+			}
+			else
+			{
+				DataRecieved(vectorDataParameters.tile, vectorTile);
+			}
+		});
+	}
+}