/usr/include/dune/grid/io/file/dgfparser/dgfs.hh is in libdune-grid-dev 2.4.1-1.
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_DGFS_HH
#define DUNE_DGFS_HH
#include <dune/grid/common/intersection.hh>
#include <dune/grid/sgrid.hh>
#include "dgfparser.hh"
namespace Dune
{
// External Forward Declarations
// -----------------------------
template< class GridImp, class IntersectionImp >
class Intersection;
// DGFGridFactory for SGrid
// ------------------------
template< int dim, int dimworld, class ctype >
struct DGFGridFactory< SGrid< dim, dimworld, ctype > >
{
typedef SGrid< dim, dimworld, ctype > Grid;
const static int dimension = Grid::dimension;
typedef MPIHelper::MPICommunicator MPICommunicatorType;
private:
typedef FieldVector< double, dimension > Point;
typedef dgf::BoundaryDomBlock BoundaryDomainBlock;
public:
explicit DGFGridFactory ( std::istream &input,
MPICommunicatorType comm = MPIHelper::getCommunicator() )
{
generate( input, comm );
}
explicit DGFGridFactory ( const std::string &filename,
MPICommunicatorType comm = MPIHelper::getCommunicator() )
{
std::ifstream input( filename.c_str() );
generate( input, comm );
}
Grid *grid() const
{
return grid_;
}
template< class Intersection >
bool wasInserted ( const Intersection &intersection ) const
{
return false;
}
template< class Intersection >
int boundaryId ( const Intersection &intersection ) const
{
if( boundaryDomainBlock_->isactive() )
{
std::vector< Point > corners;
getCorners( intersection.geometry(), corners );
const dgf::DomainData *data = boundaryDomainBlock_->contains( corners );
if( data )
return data->id();
else
return intersection.indexInInside();
}
else
return intersection.indexInInside();
}
template< int codim >
int numParameters () const
{
return 0;
}
// return true if boundary parameters found
bool haveBoundaryParameters () const
{
return boundaryDomainBlock_->isactive();
}
template< class GG, class II >
const typename DGFBoundaryParameter::type &
boundaryParameter ( const Intersection< GG, II > & intersection ) const
{
if( haveBoundaryParameters() )
{
std::vector< Point > corners;
getCorners( intersection.geometry(), corners );
const dgf::DomainData *data = boundaryDomainBlock_->contains( corners );
if( data )
return data->parameter();
else
return DGFBoundaryParameter::defaultValue();
}
else
return DGFBoundaryParameter::defaultValue();
}
template< class Entity >
std::vector< double > ¶meter ( const Entity &entity )
{
return emptyParam;
}
private:
void generate( std::istream &gridin, MPICommunicatorType comm );
template< class Geometry >
static void getCorners ( const Geometry &geometry, std::vector< Point > &corners )
{
corners.resize( geometry.corners() );
for( int i = 0; i < geometry.corners(); ++i )
{
const typename Geometry::GlobalCoordinate corner = geometry.corner( i );
for( int j = 0; j < dimension; ++j )
corners[ i ][ j ] = corner[ j ];
}
}
Grid *grid_;
dgf::BoundaryDomBlock *boundaryDomainBlock_;
std::vector< double > emptyParam;
};
template< int dim, int dimworld, class ctype >
inline void DGFGridFactory< SGrid< dim, dimworld, ctype > >
::generate ( std::istream &gridin, MPICommunicatorType comm )
{
dgf::IntervalBlock intervalBlock( gridin );
if( !intervalBlock.isactive() )
DUNE_THROW( DGFException, "SGrid can only be created from an interval block." );
if( intervalBlock.numIntervals() != 1 )
DUNE_THROW( DGFException, "SGrid can only handle 1 interval block." );
if( intervalBlock.dimw() != dim )
{
DUNE_THROW( DGFException,
"Cannot read an interval of dimension " << intervalBlock.dimw()
<< "into a SGrid< " << dim << ", " << dimworld << " >." );
}
const dgf::IntervalBlock::Interval &interval = intervalBlock.get( 0 );
FieldVector< double, dimension > lower, upper;
FieldVector< int, dimension > anz;
for( int i = 0; i < dimension; ++i )
{
lower[ i ] = interval.p[ 0 ][ i ];
upper[ i ] = interval.p[ 1 ][ i ];
anz[ i ] = interval.n[ i ];
}
grid_ = new Grid( anz, lower, upper );
boundaryDomainBlock_ = new dgf::BoundaryDomBlock( gridin, dimension );
}
template< int dim, int dimworld, class ctype >
struct DGFGridInfo< SGrid< dim, dimworld, ctype > >
{
static int refineStepsForHalf ()
{
return 1;
}
static double refineWeight ()
{
return 1.0 / double( 1 << dim );
}
};
}
#endif // #ifndef DUNE_DGFS_HH
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