public static ITilemapRun SetPixels(ITilemapRun run, IDataModel model, ModelDelta token, int page, int[,] pixels, ref int arrayTilesetAddress, Func <byte[], ModelDelta, ITilemapRun> replaceData)
{
var tileData = Tilize(pixels, run.Format.BitsPerPixel);
var tiles = GetUniqueTiles(tileData, run.BytesPerTile == 2);
var tilesetAddress = model.GetAddressFromAnchor(new NoDataChangeDeltaModel(), -1, run.Format.MatchingTileset);
var tileset = model.GetNextRun(tilesetAddress) as ITilesetRun;
if (tileset == null)
{
FindMatchingTileset(run, model, ref arrayTilesetAddress);
tileset = model.GetNextRun(arrayTilesetAddress) as ITilesetRun;
}
var tilesToKeep = new HashSet <int>((tileset.DecompressedLength / tileset.TilesetFormat.BitsPerPixel / 8).Range());
var originalUsedTiles = GetUsedTiles(run).ToHashSet();
foreach (var tile in originalUsedTiles)
{
tilesToKeep.Remove(tile);
}
foreach (var tilemap in tileset.FindDependentTilemaps(model).Except(run))
{
tilesToKeep.AddRange(GetUsedTiles(tilemap));
}
var oldTileDataRaw = tileset.GetData();
var previousTiles = Tilize(oldTileDataRaw, run.Format.BitsPerPixel);
tiles = MergeTilesets(previousTiles, tilesToKeep, tiles, run.BytesPerTile == 2);
tileset.SetPixels(model, token, tiles);
var mapData = run.GetTilemapData();
var tileWidth = tileData.GetLength(0);
var tileHeight = tileData.GetLength(1);
for (int y = 0; y < tileHeight; y++)
{
for (int x = 0; x < tileWidth; x++)
{
var i = y * tileWidth + x;
var(tile, paletteIndex) = tileData[x, y];
var(tileIndex, matchType) = FindMatch(tile, tiles, run.BytesPerTile == 2);
if (tileIndex == -1)
{
tileIndex = 0;
}
if (run.BytesPerTile == 2)
{
var mapping = PackMapping(paletteIndex, matchType, tileIndex);
mapData[i * 2 + 0] = (byte)mapping;
mapData[i * 2 + 1] = (byte)(mapping >> 8);
}
else
{
mapData[i] = (byte)tileIndex;
}
}
}
return(replaceData(mapData, token));
}
public static IEnumerable <int> GetUsedTiles(ITilemapRun tilemap)
{
var mapData = tilemap.GetTilemapData();
for (int y = 0; y < tilemap.Format.TileHeight; y++)
{
for (int x = 0; x < tilemap.Format.TileWidth; x++)
{
var map = mapData.ReadMultiByteValue((tilemap.Format.TileWidth * y + x) * tilemap.BytesPerTile, tilemap.BytesPerTile);
var tile = map & 0x3FF;
yield return(tile);
}
}
}
