void addTileObserver(TileObserver to)
WritableRaster getWritableTile(int tileX, int tileY)
Point[] getWritableTileIndices()
boolean hasTileWriters()
boolean isTileWritable(int tileX, int tileY)
void releaseWritableTile(int tileX, int tileY)
void removeTileObserver(TileObserver to)
void setData(Raster r)