public void TestTileSpiralEnumerator()
{
// simplest case, range with one tile.
var range = new TileRange(0, 0, 0, 0, 16);
var enumerator = new TileRange.TileRangeCenteredEnumerator(range);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsFalse(enumerator.MoveNext());
// a range with 2 tiles.
range = new TileRange(0, 0, 1, 0, 16);
enumerator = new TileRange.TileRangeCenteredEnumerator(range);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsFalse(enumerator.MoveNext());
// a range with 4 tiles.
range = new TileRange(0, 0, 1, 1, 16);
enumerator = new TileRange.TileRangeCenteredEnumerator(range);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsFalse(enumerator.MoveNext());
// a range with 6 tiles.
range = new TileRange(0, 0, 2, 1, 16);
enumerator = new TileRange.TileRangeCenteredEnumerator(range);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(2, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(2, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsFalse(enumerator.MoveNext());
// a range with 9 tiles.
range = new TileRange(0, 0, 2, 2, 16);
enumerator = new TileRange.TileRangeCenteredEnumerator(range);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(2, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(2, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(2, enumerator.Current.X);
Assert.AreEqual(2, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(2, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(2, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsFalse(enumerator.MoveNext());
// rudementary tests.
range = new TileRange(-10, -10, 10, 10, 16);
var tiles = new HashSet<Tile>(range.EnumerateInCenterFirst());
Assert.AreEqual(range.Count, tiles.Count);
// rudementary tests.
range = new TileRange(33638, 21862, 33640, 21864, 16);
tiles = new HashSet<Tile>(range.EnumerateInCenterFirst());
Assert.AreEqual(range.Count, tiles.Count);
}
public void TestTileSpiralEnumerator()
{
// simplest case, range with one tile.
var range = new TileRange(0, 0, 0, 0, 16);
var enumerator = new TileRange.TileRangeCenteredEnumerator(range);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsFalse(enumerator.MoveNext());
// a range with 2 tiles.
range = new TileRange(0, 0, 1, 0, 16);
enumerator = new TileRange.TileRangeCenteredEnumerator(range);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsFalse(enumerator.MoveNext());
// a range with 4 tiles.
range = new TileRange(0, 0, 1, 1, 16);
enumerator = new TileRange.TileRangeCenteredEnumerator(range);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsFalse(enumerator.MoveNext());
// a range with 6 tiles.
range = new TileRange(0, 0, 2, 1, 16);
enumerator = new TileRange.TileRangeCenteredEnumerator(range);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(2, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(2, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsFalse(enumerator.MoveNext());
// a range with 9 tiles.
range = new TileRange(0, 0, 2, 2, 16);
enumerator = new TileRange.TileRangeCenteredEnumerator(range);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(2, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(2, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(2, enumerator.Current.X);
Assert.AreEqual(2, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(1, enumerator.Current.X);
Assert.AreEqual(2, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(2, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(1, enumerator.Current.Y);
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(0, enumerator.Current.X);
Assert.AreEqual(0, enumerator.Current.Y);
Assert.IsFalse(enumerator.MoveNext());
// rudementary tests.
range = new TileRange(-10, -10, 10, 10, 16);
var tiles = new HashSet <Tile>(range.EnumerateInCenterFirst());
Assert.AreEqual(range.Count, tiles.Count);
// rudementary tests.
range = new TileRange(33638, 21862, 33640, 21864, 16);
tiles = new HashSet <Tile>(range.EnumerateInCenterFirst());
Assert.AreEqual(range.Count, tiles.Count);
}
