| | | 1 | | using System.Collections.Generic; |
| | | 2 | | using Itinero.Network.Tiles; |
| | | 3 | | |
| | | 4 | | namespace Itinero.Network.Enumerators.Vertices; |
| | | 5 | | |
| | | 6 | | internal class RoutingNetworkVertexEnumerator |
| | | 7 | | { |
| | | 8 | | private readonly RoutingNetwork _routingNetwork; |
| | | 9 | | private readonly IEnumerator<uint> _tileEnumerator; |
| | | 10 | | |
| | 42 | 11 | | public RoutingNetworkVertexEnumerator(RoutingNetwork routingNetwork) |
| | 42 | 12 | | { |
| | 42 | 13 | | _routingNetwork = routingNetwork; |
| | 42 | 14 | | _tileEnumerator = routingNetwork.GetTileEnumerator(); |
| | | 15 | | |
| | 42 | 16 | | this.Current = VertexId.Empty; |
| | 42 | 17 | | } |
| | | 18 | | |
| | 42 | 19 | | private long _localId = -1; |
| | 42 | 20 | | private uint _tileId = uint.MaxValue; |
| | | 21 | | private NetworkTile? _tile; |
| | | 22 | | |
| | | 23 | | private void MoveNexTile() |
| | 64 | 24 | | { |
| | 1480883 | 25 | | while (true) |
| | 1480883 | 26 | | { |
| | 1480883 | 27 | | if (!_tileEnumerator.MoveNext()) |
| | 14 | 28 | | { |
| | 14 | 29 | | return; |
| | | 30 | | } |
| | | 31 | | |
| | | 32 | | // get tile for reading. |
| | 1480869 | 33 | | _tileId = _tileEnumerator.Current; |
| | 1480869 | 34 | | _tile = _routingNetwork.GetTileForRead(_tileId); |
| | | 35 | | |
| | 1480869 | 36 | | if (_tile != null) |
| | 50 | 37 | | { |
| | 50 | 38 | | return; |
| | | 39 | | } |
| | 1480819 | 40 | | } |
| | 64 | 41 | | } |
| | | 42 | | |
| | | 43 | | public bool MoveNext() |
| | 102 | 44 | | { |
| | 124 | 45 | | while (true) |
| | 124 | 46 | | { |
| | | 47 | | // when vertex is empty move to the first tile. |
| | 124 | 48 | | if (this.Current.IsEmpty()) |
| | 42 | 49 | | { |
| | 42 | 50 | | this.MoveNexTile(); |
| | 42 | 51 | | } |
| | | 52 | | |
| | | 53 | | // no current tile here, no data. |
| | 124 | 54 | | if (_tile == null) |
| | 14 | 55 | | { |
| | 14 | 56 | | return false; |
| | | 57 | | } |
| | | 58 | | |
| | | 59 | | // move to the next vertex. |
| | 110 | 60 | | _localId++; |
| | 110 | 61 | | this.Current = new VertexId(_tileId, (uint)_localId); |
| | | 62 | | |
| | | 63 | | // get vertex, if it exists, return true. |
| | | 64 | | // TODO: this check can be done faster without reading coordinates. |
| | 110 | 65 | | if (_tile.HasVertex(this.Current)) |
| | 88 | 66 | | { |
| | 88 | 67 | | return true; |
| | | 68 | | } |
| | | 69 | | |
| | | 70 | | // vertex doesn't exist, move to the next tile. |
| | 22 | 71 | | _localId = -1; |
| | 22 | 72 | | this.MoveNexTile(); |
| | 22 | 73 | | } |
| | 102 | 74 | | } |
| | | 75 | | |
| | 466 | 76 | | public VertexId Current { get; private set; } |
| | | 77 | | |
| | | 78 | | public void Reset() |
| | 0 | 79 | | { |
| | 0 | 80 | | this.Current = VertexId.Empty; |
| | 0 | 81 | | _localId = -1; |
| | 0 | 82 | | _tileId = uint.MaxValue; |
| | | 83 | | |
| | 0 | 84 | | _tileEnumerator.Reset(); |
| | 0 | 85 | | } |
| | | 86 | | } |