[Dune] geometry grid and host entity

[Christoph_Gersbacher]

Hi Marco,

to access the underlying host grid entity use the HostGridAccess structure:

    #include <dune/grid/utility/hostgridaccess.hh>

    template<class HostGrid, int codim>
    void illustrate(const GeometryGrid<HostGrid>::Codim<codim>::Entity
    &entity)
    {
         typedef GeometryGrid<HostGrid> Grid;
         typedef HostGridAccess<Grid>::Codim<codim>::HostEntity HostEntity;
         const HostEntity &hostEntity =
    HostGridAccess<Grid>::hostEntity(entity);
    }

If you have configured your DUNE installation with the

    --enable-experimental-grid-extensions

option, you can also write:

    entity.impl().hostEntity();

(In experimental mode, the impl()-method is present on all DUNE 
interface facade classes, see e. g. <dune/grid/common/entity.hh>; the 
method will give you access to the implementation object wrapped inside 
a facade class)

Cheers,
Christoph


On 12/20/2013 10:14 AM, Marco Cisternino wrote:
> I wonder if I can ask a geometry grid entity for its relative entity on the host grid. If yes, how?
> Thanks.
> Marco
>
> --
> -----------------------------------------------
> Marco Cisternino, PhD
> OPTIMAD Engineering s.r.l.
> Via Giacinto Collegno 18
> 10143 Torino - Italy
> www.optimad.it
> marco.cisternino at optimad.it
> +39 011 19719782
> -----------------------------------------------
>
> _______________________________________________
> Dune mailing list
> Dune at dune-project.org
> http://lists.dune-project.org/mailman/listinfo/dune


-- 
Christoph Gersbacher<christoph.gersbacher at mathematik.uni-freiburg.de> 
<mailto:christoph.gersbacher at mathematik.uni-freiburg.de>
Abteilung für Angewandte Mathematik
Albert-Ludwigs-Universität Freiburg
Hermann-Herder-Str. 10
D-79104 Freiburg im Breisgau
Tel.: +49 (0)761 / 203 5645
Fax: +49 (0)761 / 203 5632
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.dune-project.org/pipermail/dune/attachments/20131220/44de5b04/attachment.htm>