public static void InsertLeaf(Dbvt pdbvt, DbvtNode root, DbvtNode leaf)
{
if (pdbvt.Root == null)
{
pdbvt.Root = leaf;
leaf.parent = null;
}
else
{
if (!root.IsLeaf())
{
do
{
root = root._children[DbvtAabbMm.Select(ref leaf.volume,
ref root._children[0].volume,
ref root._children[1].volume)];
} while (!root.IsLeaf());
}
DbvtNode prev = root.parent;
DbvtAabbMm mergeResults = DbvtAabbMm.Merge(ref leaf.volume, ref root.volume);
DbvtNode node = CreateNode2(pdbvt, prev, ref mergeResults, null);
if (prev != null)
{
prev._children[IndexOf(root)] = node;
node._children[0] = root;
root.parent = node;
node._children[1] = leaf;
leaf.parent = node;
do
{
if (!prev.volume.Contain(ref node.volume))
{
DbvtAabbMm.Merge(ref prev._children[0].volume, ref prev._children[1].volume, ref prev.volume);
}
else
{
break;
}
node = prev;
} while (null != (prev = node.parent));
}
else
{
node._children[0] = root;
root.parent = node;
node._children[1] = leaf;
leaf.parent = node;
pdbvt.Root = node;
}
}
}