public void WriteTile(ImageSlice tile)
{
if (x == canvasWidth)
{
x = 0;
y += TILE_HEIGHT;
if (y >= CANVAS_HEIGHT)
{
throw new InvalidOperationException("This image has too many unique tiles to write");
}
}
int bufferCopyPos = (y * canvasWidth) + x;
byte[] tilePixels = pixelConverter(tile.rect);
for (int yPos = 0; yPos < TILE_HEIGHT; ++yPos)
{
Array.Copy(tilePixels, yPos * tileWidth, pixels, bufferCopyPos, tileWidth);
bufferCopyPos += canvasWidth;
}
x += tileWidth;
++writtenTiles;
}
static void ConvertAllTiles(ushort[] pixels, PixelBuffer convertedPixels, PaletteList palettes, List <PositionData> positions, IConverterProfile profile)
#endif
{
List <ImageSlice> convertedTiles = new List <ImageSlice>();
Dictionary <ImageSlice, TileInfo> uniqueTiles = new Dictionary <ImageSlice, TileInfo>();
int tiles = 0;
for (int y = 0; y < PixelBuffer.CANVAS_HEIGHT; y += PixelBuffer.TILE_HEIGHT)
{
for (int x = 0; x < PixelBuffer.CANVAS_WIDTH; x += PixelBuffer.TILE_WIDTH)
{
#if USE_32BIT_SOURCE
int[] tile = GetTileData(pixels, x, y);
#else
ushort[] tile = GetTileData(pixels, x, y);
#endif
int usedPalette;
PositionData pd;
ImageSlice slice = palettes.NaturalizeTile(tile, out usedPalette);
if (slice != null)
{
++tiles;
int uniqueTileId;
// see if this slice already exists
if (uniqueTiles.ContainsKey(slice))
{
TileInfo info = uniqueTiles[slice];
ImageSlice dup = convertedTiles[info.tileIndex];
Debug.Assert(AreArraysEqual(dup.rect, slice.rect), "In duplicate tile branch, but tiles aren't duplicates");
usedPalette = info.paletteId;
uniqueTileId = info.tileIndex;
}
else
{
// it's a unique slice, add it
uniqueTileId = convertedTiles.Count;
TileInfo ti = new TileInfo(uniqueTileId, usedPalette);
convertedTiles.Add(slice);
uniqueTiles.Add(slice, ti);
convertedPixels.WriteTile(slice);
}
//Debug.Assert(usedPalette < profile.NumPalettes);
pd = new PositionData(
(byte)(x / PixelBuffer.TILE_WIDTH),
(byte)(y / PixelBuffer.TILE_HEIGHT),
profile.MakeTileAndPaletteValue(uniqueTileId, usedPalette)
);
positions.Add(pd);
}
else if (usedPalette != PaletteList.DISCARD_TILE) // these are all the same colour
{
#if USE_32BIT_SOURCE
ushort singleColour = profile.SwizzleSolidColour(Palette.ConvertColourToRGB555(tile[0]));
#else
ushort singleColour = profile.SwizzleSolidColour(tile[0]);
#endif
pd = new PositionData(
(byte)(x / PixelBuffer.TILE_WIDTH),
(byte)(y / PixelBuffer.TILE_HEIGHT)
).SetSolidColour(singleColour);
positions.Add(pd);
#if DEBUG
Console.WriteLine("Found solid colour tile at {0}x{1} of colour {2:x}", x, y, singleColour);
#endif
}
// else this is a tile containing only black and/or transparent colours
// and the converter profile said it shouldn't be included in the image file
}
}
Console.WriteLine("Total tiles: {0}, unique tiles: {1}", tiles, convertedTiles.Count);
}
