/// <summary>
/// Builds a guid for the given face.
/// </summary>
/// <param name="graph">The graph.</param>
/// <param name="face">The face.</param>
public static Guid?GetFaceGuid(this TiledBarrierGraph graph, int face)
{
var locations = graph.FaceToClockwiseCoordinates(face).Select(x =>
TileStatic.ToLocalTileCoordinates(14, x, 16384)).ToArray();
return(GetFaceGuidFor(locations));
}
public static void WriteToStream(this TiledBarrierGraph.BarrierGraphEnumerator enumerator, Stream stream)
{
var graph = enumerator.Graph;
stream.Write(enumerator.GetEdgeGuid().ToByteArray());
var vertex2Guid = graph.GetVertexGuid(enumerator.Vertex2);
stream.Write(vertex2Guid.ToByteArray());
var shape = enumerator.Shape;
stream.Write(BitConverter.GetBytes(shape.Length));
for (var s = 0; s < shape.Length; s++)
{
stream.Write(TileStatic.ToLocalTileCoordinates(graph.Zoom, shape[s], 16384).GetBytes());
}
var tags = enumerator.Tags;
stream.Write(BitConverter.GetBytes(tags.Count));
foreach (var tag in tags)
{
stream.WriteWithSize(tag.Key);
stream.WriteWithSize(tag.Value);
}
}
/// <summary>
/// Builds a guid for the given vertex.
/// </summary>
/// <param name="graph">The graph.</param>
/// <param name="vertex">The vertex.</param>
public static Guid GetVertexGuid(this TiledBarrierGraph graph, int vertex)
{
// we have a planar graph so location <-> guid.
// we generate an id based on the vertex location relative in a tile.
var location = graph.GetVertex(vertex);
var tileLocation = TileStatic.ToLocalTileCoordinates(graph.Zoom, location, 16384);
return(GuidUtility.Create(Namespace, tileLocation.GetBytes()));
}
/// <summary>
/// Builds a guid for the given edge.
/// </summary>
/// <param name="enumerator">The enumerator moved to the edge.</param>
public static Guid GetEdgeGuid(this TiledBarrierGraph.BarrierGraphEnumerator enumerator)
{
var bytes = new List <byte>();
if (!enumerator.Forward)
{
var otherEnumerator = enumerator.Graph.GetEnumerator();
otherEnumerator.MoveTo(enumerator.Vertex2);
otherEnumerator.MoveNextUntil(enumerator.Edge);
enumerator = otherEnumerator;
}
foreach (var c in enumerator.CompleteShape())
{
var tiledLocation = TileStatic.ToLocalTileCoordinates(enumerator.Graph.Zoom, c, 16384);
bytes.AddRange(tiledLocation.GetBytes());
}
return(GuidUtility.Create(Namespace, bytes));
}
private static byte[] GetVertexLocationBytes(this TiledBarrierGraph graph, int v)
{
return(TileStatic.ToLocalTileCoordinates(graph.Zoom, graph.GetVertex(v), 16384).GetBytes());
}
