/// <summary>
/// Finds a tile and all its rotations, and sets their total frequency.
/// </summary>
public void SetFrequency(Tile tile, double frequency, TileRotation tileRotation)
{
var rotatedTiles = tileRotation.RotateAll(tile).ToList();
foreach (var rt in rotatedTiles)
{
int pattern = GetPattern(rt);
frequencies[pattern] = 0.0;
}
var incrementalFrequency = frequency / rotatedTiles.Count;
foreach (var rt in rotatedTiles)
{
int pattern = GetPattern(rt);
frequencies[pattern] += incrementalFrequency;
}
}
public void Init(TilePropagator propagator)
{
ISet <Tile> actualEndPointTiles;
if (TileRotation != null)
{
actualExits = new Dictionary <Tile, ISet <Direction> >();
foreach (var kv in Exits)
{
foreach (var rot in TileRotation.RotationGroup)
{
if (TileRotation.Rotate(kv.Key, rot, out var rtile))
{
Direction Rotate(Direction d)
{
return(TopoArrayUtils.RotateDirection(propagator.Topology.AsGridTopology().Directions, d, rot));
}
var rexits = new HashSet <Direction>(kv.Value.Select(Rotate));
actualExits[rtile] = rexits;
}
}
}
actualEndPointTiles = EndPointTiles == null ? null : new HashSet <Tile>(TileRotation.RotateAll(EndPointTiles));
}
else
{
actualExits = Exits;
actualEndPointTiles = EndPointTiles;
}
pathTileSet = propagator.CreateTileSet(Exits.Keys);
pathSelectedTracker = propagator.CreateSelectedTracker(pathTileSet);
endPointTileSet = EndPointTiles != null?propagator.CreateTileSet(actualEndPointTiles) : null;
endPointSelectedTracker = EndPointTiles != null?propagator.CreateSelectedTracker(endPointTileSet) : null;
graph = CreateEdgedGraph(propagator.Topology);
tilesByExit = actualExits
.SelectMany(kv => kv.Value.Select(e => Tuple.Create(kv.Key, e)))
.GroupBy(x => x.Item2, x => x.Item1)
.ToDictionary(g => g.Key, propagator.CreateTileSet);
trackerByExit = tilesByExit
.ToDictionary(kv => kv.Key, kv => propagator.CreateSelectedTracker(kv.Value));
}
