/usr/include/dune/grid/albertagrid/dgfparser.hh is in libdune-grid-dev 2.5.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_ALBERTA_DGFPARSER_HH
#define DUNE_ALBERTA_DGFPARSER_HH
#include <vector>
#include <dune/grid/albertagrid.hh>
#include <dune/grid/albertagrid/gridfactory.hh>
#include <dune/grid/io/file/dgfparser/dgfparser.hh>
#include <dune/grid/io/file/dgfparser/blocks/projection.hh>
#include <dune/grid/common/intersection.hh>
#include <dune/grid/io/file/dgfparser/parser.hh>
#if HAVE_ALBERTA
namespace Dune
{
// External Forward Declarations
// -----------------------------
template< class GridImp, class IntersectionImp >
class Intersection;
// DGFGridFactory for AlbertaGrid
// ------------------------------
template< int dim, int dimworld >
struct DGFGridFactory< AlbertaGrid< dim, dimworld > >
{
typedef AlbertaGrid<dim,dimworld> Grid;
const static int dimension = Grid::dimension;
typedef MPIHelper::MPICommunicator MPICommunicatorType;
typedef typename Grid::template Codim<0>::Entity Element;
typedef typename Grid::template Codim<dimension>::Entity Vertex;
typedef Dune::GridFactory<Grid> GridFactory;
explicit DGFGridFactory ( std::istream &input,
MPICommunicatorType comm = MPIHelper::getCommunicator() );
explicit DGFGridFactory ( const std::string &filename,
MPICommunicatorType comm = MPIHelper::getCommunicator() );
Grid *grid () const
{
return grid_;
}
template< class Intersection >
bool wasInserted ( const Intersection &intersection ) const
{
return factory_.wasInserted( intersection );
}
template< class Intersection >
int boundaryId ( const Intersection &intersection ) const
{
return Grid::getRealImplementation( intersection ).boundaryId();
}
// return true if boundary parameters found
bool haveBoundaryParameters () const
{
return dgf_.haveBndParameters;
}
template < class GG, class II >
const DGFBoundaryParameter::type &
boundaryParameter ( const Intersection< GG, II > & intersection ) const
{
typedef Dune::Intersection< GG, II > Intersection;
typename Intersection::Entity entity = intersection.inside();
const int face = intersection.indexInInside();
const ReferenceElement< double, dimension > & refElem =
ReferenceElements< double, dimension >::general( entity.type() );
int corners = refElem.size( face, 1, dimension );
std :: vector< unsigned int > bound( corners );
for( int i=0; i < corners; ++i )
{
const int k = refElem.subEntity( face, 1, i, dimension );
bound[ i ] = factory_.insertionIndex( entity.template subEntity< dimension >( k ) );
}
DuneGridFormatParser::facemap_t::key_type key( bound, false );
const DuneGridFormatParser::facemap_t::const_iterator pos = dgf_.facemap.find( key );
if( pos != dgf_.facemap.end() )
return dgf_.facemap.find( key )->second.second;
else
return DGFBoundaryParameter::defaultValue();
}
template< int codim >
int numParameters () const
{
if( codim == 0 )
return dgf_.nofelparams;
else if( codim == dimension )
return dgf_.nofvtxparams;
else
return 0;
}
std::vector< double > ¶meter ( const Element &element )
{
if( numParameters< 0 >() <= 0 )
{
DUNE_THROW( InvalidStateException,
"Calling DGFGridFactory::parameter is only allowed if there are parameters." );
}
return dgf_.elParams[ factory_.insertionIndex( element ) ];
}
std::vector< double > ¶meter ( const Vertex &vertex )
{
if( numParameters< dimension >() <= 0 )
{
DUNE_THROW( InvalidStateException,
"Calling DGFGridFactory::parameter is only allowed if there are parameters." );
}
return dgf_.vtxParams[ factory_.insertionIndex( vertex ) ];
}
private:
bool generate( std::istream &input );
Grid *grid_;
GridFactory factory_;
DuneGridFormatParser dgf_;
};
// DGFGridInfo for AlbertaGrid
// ---------------------------
template< int dim, int dimworld >
struct DGFGridInfo< AlbertaGrid< dim, dimworld > >
{
static int refineStepsForHalf ()
{
return dim;
}
static double refineWeight ()
{
return 0.5;
}
};
// Implementation of DGFGridFactory for AlbertaGrid
// ------------------------------------------------
template< int dim, int dimworld >
inline DGFGridFactory< AlbertaGrid< dim, dimworld > >
::DGFGridFactory ( std::istream &input, MPICommunicatorType comm )
: dgf_( 0, 1 )
{
input.clear();
input.seekg( 0 );
if( !input )
DUNE_THROW(DGFException, "Error resetting input stream." );
generate( input );
}
template< int dim, int dimworld >
inline DGFGridFactory< AlbertaGrid< dim, dimworld > >
::DGFGridFactory ( const std::string &filename, MPICommunicatorType comm )
: dgf_( 0, 1 )
{
std::ifstream input( filename.c_str() );
if( !input )
DUNE_THROW( DGFException, "Macrofile " << filename << " not found." );
if( !generate( input ) )
grid_ = new AlbertaGrid< dim, dimworld >( filename.c_str() );
input.close();
}
}
#endif // #if HAVE_ALBERTA
#endif // #ifndef DUNE_ALBERTA_DGFPARSER_HH
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