You''re going to have to pretend I don''t know how you''re using this. Because I don''t.

Of course if a mesh rotates you''ll have to readjust the bb. What I showed you gives you a bb for a mesh at the beginning; this is something that should probably be preprocessed anyway. If you want to recurse the tree every time you move something, you''ll have to do something different. Just handle it.

You have geometry. That has bounds. If it rotates, and your bb is axial, those bounds change. If it''s oriented, those bounds rotate with the mesh. What''s the question?

I like pie.