public ISet <Tile> GetPossibleTiles(int index)
{
tileModelMapping.GetTileCoordToPatternCoord(index, out var patternIndex, out var o);
var patterns = wavePropagator.GetPossiblePatterns(patternIndex);
var hs = new HashSet <Tile>();
var patternToTiles = tileModelMapping.PatternsToTilesByOffset[o];
foreach (var pattern in patterns)
{
hs.Add(patternToTiles[pattern]);
}
return((ISet <Tile>)hs);
}
public void TestMemoizeIndices()
{
var model = new PatternModel
{
Frequencies = new double[] { 1, 1 },
// Free model
Propagator = new int[][][]
{
new int[][] { new int[] { 0, 1 }, new int[] { 0, 1 }, new int[] { 0, 1 }, new int[] { 0, 1 }, },
new int[][] { new int[] { 0, 1 }, new int[] { 0, 1 }, new int[] { 0, 1 }, new int[] { 0, 1 }, },
}
};
var width = 10;
var height = 10;
var topology = new GridTopology(width, height, true);
var indexPicker = new CustomIndexPicker();
var memoIndexPicker = new MemoizeIndexPicker(indexPicker);
var options = new WavePropagatorOptions {
BacktrackPolicy = new ConstantBacktrackPolicy(1),
IndexPicker = memoIndexPicker,
PatternPicker = new SimpleOrderedPatternPicker(),
Constraints = new[] { new DontBanOneConstraint() },
};
var propagator = new WavePropagator(model, topology, options);
// Attempts to pick pattern 0 at index 0, should contradict and backtrack
var status = propagator.Step();
Assert.AreEqual(Resolution.Undecided, status);
Assert.AreEqual(1, propagator.BacktrackCount);
CollectionAssert.AreEqual(propagator.GetPossiblePatterns(0), new[] { 1 });
Assert.AreEqual(1, indexPicker.Count);
// Should re-attempt index zero, with no effect.
propagator.Step();
Assert.AreEqual(Resolution.Undecided, status);
Assert.AreEqual(1, propagator.BacktrackCount);
CollectionAssert.AreEqual(propagator.GetPossiblePatterns(0), new[] { 1 });
Assert.AreEqual(1, indexPicker.Count);
// Attempts to pick pattern 0 at index 1, should contradict and backtrack
propagator.Step();
Assert.AreEqual(Resolution.Undecided, status);
Assert.AreEqual(2, propagator.BacktrackCount);
CollectionAssert.AreEqual(propagator.GetPossiblePatterns(1), new[] { 1 });
Assert.AreEqual(2, indexPicker.Count);
// etc
}