On 4/12/11 1:21 PM, Roy Stogner wrote:
>
> On Tue, 12 Apr 2011, Boyce Griffith wrote:
>
>> How are elements ordered in the element iterators in adaptively
>> refined meshes? Do you loop over level 0, then level 1, then level 2?
>> Or does the ordering of the elements get changed with AMR?
>
> The ordering of existing elements doesn't get changed, but the
> ordering is very path-dependent; new elements generally get tacked on
> to the end of the list, and renumbered downward when coarsening frees
> up lower element numbers.
OK; then can one do something like:
coarse_elem_it = coarse_mesh->elements_begin();
coarse_elem_end = coarse_mesh->elements_end();
fine_elem_it = fine_mesh->elements_begin();
for (; coarse_elem_it != coarse_elem_end;
++coarse_elem_it, ++fine_elem_it)
{
Elem* coarse_elem = *coarse_elem_it;
Elem* fine_elem = *fine_elem_it;
// map coarse grid DOF indices to fine grid DOF indices
}
-- Boyce
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