QuickFont.TextNodeList.SplitNode C# (CSharp) Метод

        public TextNode SplitNode(TextNode node)
        {
            if (node.Type != TextNodeType.Word)
                throw new Exception("Cannot slit text node of type: " + node.Type);

            int midPoint = node.Text.Length / 2;

            string newFirstHalf = node.Text.Substring(0, midPoint);
            string newSecondHalf = node.Text.Substring(midPoint, node.Text.Length - midPoint);

            TextNode newFirst = new TextNode(TextNodeType.Word, newFirstHalf);
            TextNode newSecond = new TextNode(TextNodeType.Word, newSecondHalf);
            newFirst.Next = newSecond;
            newSecond.Previous = newFirst;

            //node is head
            if (node.Previous == null)
                Head = newFirst;
            else
            {
                node.Previous.Next = newFirst;
                newFirst.Previous = node.Previous;
            }

            //node is tail
            if (node.Next == null)
                Tail = newSecond;
            else
            {
                node.Next.Previous = newSecond;
                newSecond.Next = node.Next;
            }

            return newFirst;
        }