[MOAB-dev] question about OBB

[Iulian Grindeanu]

Hello,


----- Original Message -----
> Will that work if the set you hand it isn't the top-most tree root?
> 
> - tim
> 
> On 05/02/2011 10:53 AM, Jason Kraftcheck wrote:
> > 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
> >
> 
Thanks,
It seems that delete_tree does what I want (it is deleting all children of a branch). So, it might be possible to "update" the tree, without too much effort.

Best Regards,
Iulian

> --
> ================================================================
> "You will keep in perfect peace him whose mind is
> steadfast, because he trusts in you." Isaiah 26:3
> 
> Tim Tautges Argonne National Laboratory
> (tautges at mcs.anl.gov) (telecommuting from UW-Madison)
> phone: (608) 263-8485 1500 Engineering Dr.
> fax: (608) 263-4499 Madison, WI 53706