[MOAB-dev] question about OBB

[Jason Kraftcheck]

On 05/02/2011 10:46 AM, Iulian Grindeanu wrote:
> Hello, Actually, I would like to have more control over the OBB tree
> creation/deletion or even update. When I am modifying geometry (or
> meshes), instead of deleting the whole tree, and creating it again, I
> would like to update "locally". Is that possible?
> 

It is certainly possible.  MOAB has no code to do so, though.

> So in the following scenario: I have a model with 200 surfaces. I would
> like to split one surface in 2, generate one more surface (and at least
> one edge) Can I modify the tree locally?
> 

The tree is composed of entity sets and tag data on those sets.  You can
modify them the same as anything else in MOAB.

> It might be a too difficult job, and not worth the effort.
> 
> There are methods to build a "tree" from a range of entities, and join
> after that with an existing tree, but I do not see any method to "delete"
> a tree (or a branch?)
> 
> Or am I missing something?
> 


OrientedBoxTreeTool::delete_tree( EntityHandle root );

- jason