EditorMapa2D.World.getImage C# (CSharp) Метод

        public Image getImage(int i, int j, bool redesenha)
        {
            if (regions.ContainsKey(i))
            {
                int w = regions[i].tile_width * regions[i].map_width;
                int h = regions[i].map_height * regions[i].tile_height;
                Dictionary<int, Layer> list = regions[i].layer;

                if (!region_image.ContainsKey(i))
                    region_image.Add(i, new Dictionary<int, Image>());

                if(list.ContainsKey(j))
                {
                    Layer lyr = list[j];
                    if (redesenha || !region_image[i].ContainsKey(j))
                    {
                        Image image = new Bitmap(w, h);

                        Graphics g = Graphics.FromImage(image);
                        foreach (Dictionary<int, Tile> coluna in lyr.tiles.Values)
                        {
                            foreach (Tile tile in coluna.Values)
                            {
                                if (tilesets.ContainsKey(tile.tileset_code))
                                {
                                    Tileset tset = tilesets[tile.tileset_code];
                                    Image img = tset.getImageCrop(tile.tile_code, tile.tile_crop);
                                    if (img != null)
                                    {
                                        g.DrawImage(img, tile.point);
                                    }
                                }
                            }
                        }

                        if (!region_image[i].ContainsKey(j))
                            region_image[i].Add(j, image);
                        else
                            region_image[i][j] = image;

                    }
                    return region_image[i][j];
                }
            }
            return null;
        }