| | | 1 | | using System; |
| | | 2 | | using System.IO; |
| | | 3 | | using System.Linq; |
| | | 4 | | using Itinero.IO; |
| | | 5 | | using Itinero.Network.DataStructures; |
| | | 6 | | using Itinero.Network.Mutation; |
| | | 7 | | using Itinero.Network.Search.Islands; |
| | | 8 | | using Itinero.Network.Tiles; |
| | | 9 | | |
| | | 10 | | namespace Itinero.Network.Serialization; |
| | | 11 | | |
| | | 12 | | internal static class RoutingNetworkSerializer |
| | | 13 | | { |
| | | 14 | | public static void WriteTo(this RoutingNetworkMutator routingNetworkMutator, Stream stream) |
| | 4 | 15 | | { |
| | | 16 | | // write version #. |
| | 4 | 17 | | stream.WriteVarInt32(2); |
| | | 18 | | |
| | | 19 | | // write zoom. |
| | 4 | 20 | | stream.WriteVarInt32(routingNetworkMutator.Zoom); |
| | | 21 | | |
| | | 22 | | // write max island size. |
| | 4 | 23 | | stream.WriteVarInt32(routingNetworkMutator.IslandManager.MaxIslandSize); |
| | | 24 | | |
| | | 25 | | // write tiles. |
| | 4 | 26 | | stream.WriteVarUInt32((uint)routingNetworkMutator.GetTiles().Count()); |
| | 16 | 27 | | foreach (var tileId in routingNetworkMutator.GetTiles()) |
| | 2 | 28 | | { |
| | 2 | 29 | | var tile = routingNetworkMutator.GetTile(tileId); |
| | 2 | 30 | | tile?.WriteTo(stream); |
| | 2 | 31 | | } |
| | 4 | 32 | | } |
| | | 33 | | |
| | | 34 | | public static RoutingNetwork ReadFrom(this Stream stream, RouterDb routerDb) |
| | 4 | 35 | | { |
| | | 36 | | // check version #. |
| | 4 | 37 | | var version = stream.ReadVarInt32(); |
| | 4 | 38 | | if (version != 2) |
| | 0 | 39 | | { |
| | 0 | 40 | | throw new InvalidDataException("Unknown version #."); |
| | | 41 | | } |
| | | 42 | | |
| | | 43 | | // read zoom. |
| | 4 | 44 | | var zoom = stream.ReadVarInt32(); |
| | | 45 | | |
| | | 46 | | // read max island size. |
| | 4 | 47 | | var maxIslandSize = stream.ReadVarInt32(); |
| | | 48 | | |
| | 4 | 49 | | var tileCount = stream.ReadVarUInt32(); |
| | 4 | 50 | | var tiles = new SparseArray<NetworkTile?>(tileCount); |
| | 12 | 51 | | for (var t = 0; t < tileCount; t++) |
| | 2 | 52 | | { |
| | 2 | 53 | | var tile = NetworkTile.ReadFrom(stream); |
| | 2 | 54 | | tiles.EnsureMinimumSize(tile.TileId); |
| | 2 | 55 | | tiles[tile.TileId] = tile; |
| | 2 | 56 | | } |
| | | 57 | | |
| | 4 | 58 | | return new RoutingNetwork(routerDb, tiles, zoom, new RoutingNetworkIslandManager(maxIslandSize)); |
| | 4 | 59 | | } |
| | | 60 | | } |