/usr/include/dune/grid/albertagrid/geometry.cc is in libdune-grid-dev 2.3.1-1.
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_GEOMETRY_CC
#define DUNE_ALBERTA_GEOMETRY_CC
#include <dune/grid/albertagrid/algebra.hh>
#include <dune/grid/albertagrid/geometry.hh>
#include <dune/grid/albertagrid/refinement.hh>
namespace Dune
{
// AlbertaGridGeometry
// -------------------
// print the GeometryInformation
template <int mydim, int cdim, class GridImp>
inline void AlbertaGridGeometry<mydim,cdim,GridImp>::print (std::ostream& ss) const
{
ss << "AlbertaGridGeometry<" << mydim << "," << cdim << "> = { \n";
for(int i=0; i<corners(); i++)
{
ss << " corner " << i << " = ";
ss << ((*this)[i]); ss << "\n";
}
ss << "} \n";
}
template< int mydim, int cdim, class GridImp >
inline typename AlbertaGridGeometry< mydim, cdim, GridImp >::GlobalCoordinate
AlbertaGridGeometry< mydim, cdim, GridImp >::global ( const LocalCoordinate &local ) const
{
GlobalCoordinate y = corner( 0 );
jacobianTransposed().umtv( local, y );
return y;
}
//local implementation for mydim < cdim
template< int mydim, int cdim, class GridImp >
inline typename AlbertaGridGeometry< mydim, cdim, GridImp >::LocalCoordinate
AlbertaGridGeometry< mydim, cdim, GridImp >::local ( const GlobalCoordinate &global ) const
{
LocalCoordinate x;
jacobianInverseTransposed().mtv( global - corner( 0 ), x );
return x;
}
template< int mydim, int cdim, class GridImp >
inline const typename AlbertaGridGeometry< mydim, cdim, GridImp >::JacobianTransposed &
AlbertaGridGeometry< mydim, cdim, GridImp >::jacobianTransposed () const
{
if( !builtJT_ )
{
const FieldVector< ctype, coorddimension > &origin = coord_[ 0 ];
for( int i = 0; i < mydimension; ++i )
{
jT_[ i ] = coord_[ i+1 ];
jT_[ i ] -= origin;
}
builtJT_ = true;
}
return jT_;
}
template< int mydim, int cdim, class GridImp >
inline const typename AlbertaGridGeometry< mydim, cdim, GridImp >::JacobianInverseTransposed &
AlbertaGridGeometry< mydim, cdim, GridImp >::jacobianInverseTransposed () const
{
if( !builtJTInv_ )
{
elDet_ = std::abs( Alberta::invert( jacobianTransposed(), jTInv_ ) );
assert( elDet_ > 1.0e-25 );
calcedDet_ = true;
builtJTInv_ = true;
}
return jTInv_;
}
// built Geometry
template< int mydim, int cdim, class GridImp >
template< class CoordReader >
inline void AlbertaGridGeometry< mydim, cdim, GridImp >
::build ( const CoordReader &coordReader )
{
builtJT_ = false;
builtJTInv_ = false;
// copy corners
for( int i = 0; i < numCorners; ++i )
coordReader.coordinate( i, coord_[ i ] );
// calculate centroid
centroid_ = coord_[ 0 ];
for( int i = 1; i < numCorners; ++i )
centroid_ += coord_[ i ];
centroid_ *= 1.0 / numCorners;
elDet_ = (coordReader.hasDeterminant() ? coordReader.determinant() : elDeterminant());
assert( std::abs( elDet_ ) > 0.0 );
calcedDet_ = true;
}
#if !DUNE_ALBERTA_CACHE_COORDINATES
template< int dim, int cdim >
inline typename AlbertaGridGlobalGeometry< dim, cdim, const AlbertaGrid< dim, cdim > >::GlobalCoordinate
AlbertaGridGlobalGeometry< dim, cdim, const AlbertaGrid< dim, cdim > >::global ( const LocalCoordinate &local ) const
{
GlobalCoordinate y = corner( 0 );
jacobianTransposed().umtv( local, y );
return y;
}
//local implementation for mydim < cdim
template< int dim, int cdim >
inline typename AlbertaGridGlobalGeometry< dim, cdim, const AlbertaGrid< dim, cdim > >::LocalCoordinate
AlbertaGridGlobalGeometry< dim, cdim, const AlbertaGrid< dim, cdim > >::local ( const GlobalCoordinate &global ) const
{
LocalCoordinate x;
jacobianInverseTransposed().mtv( global - corner( 0 ), x );
return x;
}
#endif // #if !DUNE_ALBERTA_CACHE_COORDINATES
// AlbertaGridLocalGeometryProvider
// --------------------------------
template< class Grid >
void AlbertaGridLocalGeometryProvider< Grid >::buildGeometryInFather ()
{
for( int child = 0; child < numChildren; ++child )
{
for( int orientation = 0; orientation < 2; ++orientation )
{
const GeoInFatherCoordReader coordReader( child, orientation );
geometryInFather_[ child ][ orientation ] = new LocalElementGeometry( coordReader );
}
}
}
template< class Grid >
void AlbertaGridLocalGeometryProvider< Grid >::buildFaceGeometry ()
{
for( int face = 0; face < numFaces; ++face )
{
for( int twist = minFaceTwist; twist <= maxFaceTwist; ++twist )
{
const FaceCoordReader coordReader( face, twist );
faceGeometry_[ face ][ twist - minFaceTwist ] = new LocalFaceGeometry( coordReader );
}
}
}
// AlbertaGridLocalGeometryProvider::GeoInFatherCoordReader
// --------------------------------------------------------
template< class Grid >
struct AlbertaGridLocalGeometryProvider< Grid >::GeoInFatherCoordReader
{
typedef Alberta::Real ctype;
typedef FieldVector< ctype, dimension > Coordinate;
private:
typedef Alberta::GeometryInFather< dimension > GeoInFather;
public:
GeoInFatherCoordReader ( int child, int orientation )
: child_( child ),
orientation_( orientation )
{}
void coordinate ( int i, Coordinate &x ) const
{
const typename GeoInFather::LocalVector &coord
= GeoInFather::coordinate( child_, orientation_, i );
for( int j = 0; j < dimension; ++j )
x[ j ] = coord[ j ];
}
bool hasDeterminant () const
{
return false;
}
ctype determinant () const
{
return ctype( 0 );
}
private:
const int child_;
const int orientation_;
};
// AlbertaGridLocalGeometryProvider::FaceCoordReader
// -------------------------------------------------
template< class Grid >
struct AlbertaGridLocalGeometryProvider< Grid >::FaceCoordReader
{
typedef Alberta::Real ctype;
typedef FieldVector< ctype, dimension > Coordinate;
FaceCoordReader ( const int face, const int twist = 0 )
: face_( face ),
twist_( twist )
{}
void coordinate ( const int i, Coordinate &x ) const
{
const int ti = Alberta::applyInverseTwist< dimension-1 >( twist_, i );
const int j = mapVertices< 1 >( face_, ti );
refCorner( j, x );
}
bool hasDeterminant () const
{
return false;
}
ctype determinant () const
{
return ctype( 0 );
}
private:
static void refCorner ( const int i, Coordinate &x )
{
x = ctype( 0 );
if( i > 0 )
x[ i-1 ] = ctype( 1 );
}
int face_;
int twist_;
};
} // namespace Dune
#endif // #ifndef DUNE_ALBERTA_GEOMETRY_CC
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