MegaMan.Editor.Bll.ScreenDocument.CleaveVertically C# (CSharp) Method

        public void CleaveVertically(int leftHalfTileWidth)
        {
            if (leftHalfTileWidth > 0 && leftHalfTileWidth < screen.Width)
            {
                var leftSide = screen.Layers[0].Tiles.GetTiles(Point.Empty, leftHalfTileWidth, Height);
                var rightSide = screen.Layers[0].Tiles.GetTiles(new Point(leftHalfTileWidth, 0), Width - leftHalfTileWidth, Height);

                var leftScreen = Stage.AddScreen(Stage.FindNextScreenId().ToString(), leftHalfTileWidth, Height);
                var rightScreen = Stage.AddScreen(Stage.FindNextScreenId().ToString(), Width - leftHalfTileWidth, Height);

                leftScreen.screen.Layers[0].Tiles.ChangeTiles(Point.Empty, leftSide);
                rightScreen.screen.Layers[0].Tiles.ChangeTiles(Point.Empty, rightSide);

                foreach (var join in this.Joins.ToArray())
                {
                    Stage.RemoveJoin(join);
                }

                Stage.RemoveScreen(this);

                Stage.AddJoin(new Join() {
                    direction = JoinDirection.Both,
                    type = JoinType.Vertical,
                    screenOne = leftScreen.Name,
                    screenTwo = rightScreen.Name,
                    offsetOne = 0,
                    offsetTwo = 0,
                    Size = Height
                });
            }
        }