/// <summary>
/// Join an sub-CART tree this .
/// </summary>
/// <param name="isLeft">Is a left child .</param>
/// <param name="idx">Node index .</param>
/// <param name="subRoot">New child node .</param>
public void JoinSubTree(bool isLeft, ref int idx, CartNode subRoot)
{
subRoot.Parent = this;
subRoot.Index = idx;
if (isLeft)
{
LeftChild = subRoot;
subRoot.ParentIndex = Index;
}
else
{
RightChild = subRoot;
subRoot.ParentIndex = -Index;
}
if (subRoot.LeftChild != null)
{
idx++;
subRoot.JoinSubTree(true, ref idx, subRoot.LeftChild);
}
if (subRoot.RightChild != null)
{
idx++;
subRoot.JoinSubTree(false, ref idx, subRoot.RightChild);
}
}
