EditorMapa2D.Layer.this C# (CSharp) Méthode

        public Tile this[Point point]
        {
            get
            {
                if (tiles.ContainsKey(point.X))
                {
                    Dictionary<int, Tile> tmp = tiles[point.X];
                    if (tmp.ContainsKey(point.Y))
                    {
                        return tmp[point.Y];
                    }
                    else
                    {
                        return new Tile();
                    }
                }
                else
                {
                    return new Tile();
                }
            }
        }