/// <summary>
/// Deserializes a graph router data source from the given stream.
/// </summary>
/// <param name="stream"></param>
/// <param name="edgeDataSize"></param>
/// <param name="mapFrom"></param>
/// <param name="mapTo"></param>
/// <returns></returns>
public new static RouterDataSource <TEdgeData> Deserialize(System.IO.Stream stream, int edgeDataSize,
MappedHugeArray <TEdgeData, uint> .MapFrom mapFrom, MappedHugeArray <TEdgeData, uint> .MapTo mapTo, bool copy)
{
// read size of graph and start location of tags.
var longBytes = new byte[8];
stream.Read(longBytes, 0, 8);
var position = BitConverter.ToInt64(longBytes, 0);
// deserialize graph.
var graph = GraphBase <TEdgeData> .Deserialize(new CappedStream(stream, 8, position - 8), edgeDataSize, mapFrom, mapTo, copy);
// deserialize tags.
stream.Seek(position, System.IO.SeekOrigin.Begin);
var tagsIndex = global::OsmSharp.Collections.Tags.Index.TagsIndex.Deserialize(
new LimitedStream(stream));
return(new RouterDataSource <TEdgeData>(graph, tagsIndex));
}
