/// <summary>
/// Creates a new enumerator.
/// </summary>
/// <param name="graph"></param>
public EdgeEnumerator(RouterLiveEdgeDataSource graph)
{
_graph = graph;
_edges = null;
_vertex1 = 0;
_vertex2 = 0;
}
/// <summary>
/// Does the v1 deserialization.
/// </summary>
/// <param name="stream"></param>
/// <param name="lazy"></param>
/// <param name="vehicles"></param>
/// <returns></returns>
protected override IBasicRouterDataSource <LiveEdge> DoDeserialize(
LimitedStream stream, bool lazy, IEnumerable <string> vehicles)
{
// serialize all tile meta data.
stream.Seek(0, SeekOrigin.Begin);
var compressionFlag = new byte[1];
stream.Read(compressionFlag, 0, 1);
bool decompress = (compressionFlag[0] == (byte)1);
var tileCountBytes = new byte[4];
stream.Read(tileCountBytes, 0, tileCountBytes.Length);
var tileMetaEndBytes = new byte[8];
stream.Read(tileMetaEndBytes, 0, tileMetaEndBytes.Length);
var tileMetaEnd = BitConverter.ToInt64(tileMetaEndBytes, 0);
// deserialize meta data.
var metas = (SerializableGraphTileMetas)_runtimeTypeModel.Deserialize(
new CappedStream(stream, stream.Position, tileMetaEnd - stream.Position), null,
typeof(SerializableGraphTileMetas));
// create the datasource.
var routerDataSource = new RouterLiveEdgeDataSource(stream, decompress, metas, Zoom,
this, vehicles, 1000);
if (!lazy)
{
// pre-load everything.
for (int tileIdx = 0; tileIdx < metas.TileX.Length; tileIdx++)
{
routerDataSource.LoadMissingTile(
new Tile(metas.TileX[tileIdx], metas.TileY[tileIdx], Zoom));
}
}
// return router datasource.
return(routerDataSource);
}
/// <summary>
/// Creates a new enumerators.
/// </summary>
/// <param name="source">The datasource the edges come from.</param>
/// <param name="edges">The edge data.</param>
public NeighbourEnumerator(RouterLiveEdgeDataSource source,
List <Tuple <uint, uint, uint, LiveEdge> > neighbours)
{
_source = source;
_neighbours = neighbours;
}