[Dune] Getting a list of all the neighbors to an element in the unstructured grid.

[Jö Fahlke]

Am Sat,  6. Aug 2011, 11:58:10 +0530 schrieb Jayesh Badwaik:
> Is there any way to a get a list of iterators to all the elements (codim 0)
> entities
> which neighbors to a given element in an unstructured grid (especially
> ALUSimplex3d) ?

Yes, mostly.

  typedef typename GV::IntersectionIterator IIt;
  IIt iend = gv.iend(element);
  for(IIt iit = gv.ibegin(element); iit != iend; ++iit)
    if(iit->neighbour()) {
      typename GV::template Codim<0>::EntityPointer
        outsidePtr = iit->outside();
      // ... Do something useful with outsidePtr here.
    }

Only "mostly" because an EntityPointer can only be used to point to an entity,
not to iterate through entities.

Bye,
Jö.

-- 
oil -- operation iraqi liberation
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