MegaMan.LevelEditor.ScreenDrawingSurface.GetToolLayerGraphics C# (CSharp) Метод

        public Graphics GetToolLayerGraphics()
        {
            if (toolLayer == null) return null;
            return Graphics.FromImage(toolLayer);
        }

        public void Move(ScreenDrawingSurface surface, Point location)
        {
            if (held)
            {
                tx2 = location.X / surface.Screen.Tileset.TileSize;
                ty2 = location.Y / surface.Screen.Tileset.TileSize;

                var g = surface.GetToolLayerGraphics();
                if (g != null)
                {
                    g.Clear(Color.Transparent);

                    // draw rectangle preview
                    int x_start = Math.Min(tx1, tx2);
                    int x_end = Math.Max(tx1, tx2) - 1;
                    int y_start = Math.Min(ty1, ty2);
                    int y_end = Math.Max(ty1, ty2) - 1;

                    for (int y = y_start; y <= y_end; y += brush.Height)
                    {
                        for (int x = x_start; x <= x_end; x += brush.Width)
                        {
                            brush.DrawOn(g, x * brush.CellSize, y * brush.CellSize);
                        }
                    }

                    surface.ReturnToolLayerGraphics(g);
                }
            }
        }