[Dune] UG and DGF with element parameters

[Dedner, Andreas]

Well if there is any magic then its not the dgf side thats for sure:
dgfug.hh:
   /** \brief return parameter for vertex */
    std::vector< double > &parameter ( const typename Grid::template Codim< dimension >::Entity &vertex )
    {
      if( numParameters< dimension >() <= 0 )
      {
        DUNE_THROW( InvalidStateException,
                    "Calling DGFGridFactory::parameter is only allowed if there are parameters." );
      }
      return dgf_.vtxParams[ factory_.insertionIndex( vertex ) ];
    }
So I guess that should not work...
________________________________________
From: dune-bounces+a.s.dedner=warwick.ac.uk at dune-project.org [dune-bounces+a.s.dedner=warwick.ac.uk at dune-project.org] on behalf of Oliver Sander [sander at mi.fu-berlin.de]
Sent: 28 August 2012 19:49
To: dune at dune-project.org
Subject: Re: [Dune] UG and DGF with element parameters

Hi Nicolas,

 > Using a dgf file with elementwise parameters and a UG grid throws me
the aforementioned error so that I assumed that I do not need the
insertionIndex methods directly but it is needed to handle elementwise
parameters. I actually don't know why it is not needed for vertex
parameters.

Maybe that's a bug in the dgf reader?  Or there is some magic default
implementation
for the vertices?  I do not know.
>
> Anyhow I want to implement the missing methods. I followed the
> implementation for Alberta and ALU. Where I begin to struggle is: What
> is the method in UG  (in Alberta it is somehow integrated/hidden in
> elementInfo() and in ALU it is getIndex() ) which gives me the index
> for an entity which I can then forward (because you said there will be
> simply no re-ordering)? Could you please help me on this one?
>
Have a look at the implementation of UGGridLevelIndexSet.  There you'll
find how to extract
indices from UG.

best,
Oliver

> Best,
> Nicolas
>
> On 08/21/2012 06:07 PM, Oliver Sander wrote:
>> Hi Nicolas,
>> I never implemented that insertion order stuff for UG, because I could
>> convince UG not ro reorder elements and vertices to begin with, and
>> because I have so far not met anybody who actually needed those methods.
>>
>> If you do need those methods I would ask you to implement them and send
>> me a patch.  Implementation is trivial: there is simply no reordering.
>>
>> best,
>> Oliver
>>
>> Am 16.08.2012 15:03, schrieb Nicolas Schwenck:
>>> Dear DUNE,
>>>
>>> Running the testug in dune-grid/dune/grid/io/file/dgfparser/test with
>>> the file dune-grid/doc/grids/dgf/examplegrid10a.dgf on the trunk breaks
>>> for me with
>>>
>>> NotImplemented
>>> [insertionIndex:../../../../../../dune/grid/common/gridfactory.hh:181]:
>>> insertion indices have not yet been implemented.
>>>
>>> I assume that there is a problem with elementwise parameters for UG
>>> grids. Is this a bug or is it just not yet implemented as the error
>>> suggests? Does anybody uses ug for dgfs with elementwise parameters and
>>> can throw me a hint?
>>>
>>> Best,
>>> Nicolas
>>>
>>>
>>
>> _______________________________________________
>> Dune mailing list
>> Dune at dune-project.org
>> http://lists.dune-project.org/mailman/listinfo/dune
>>
>
>


--
************************************************************************
* Oliver Sander                ** email: sander at mi.fu-berlin.de        *
* Freie Universität Berlin     ** phone: + 49 (30) 838 75348           *
* Institut für Mathematik      ** URL  : page.mi.fu-berlin.de/~sander  *
* Arnimallee 6                 ** -------------------------------------*
* 14195 Berlin, Germany        ** Member of MATHEON (www.matheon.de)   *
************************************************************************


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