/usr/include/dune/grid/onedgrid/onedgridgeometry.hh is in libdune-grid-dev 2.2.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#define DUNE_ONE_D_GEOMETRY_HH
#include <dune/grid/common/geometry.hh>
#include <dune/grid/onedgrid/onedgridentity.hh>
/** \file
* \brief The OneDGridElement class and its specializations
*/
namespace Dune {
// forward declaration
template <int codim, int dim, class GridImp>
class OneDGridEntity;
/** \brief Unspecialized class. Not used for anything */
template<int mydim, int coorddim, class GridImp>
class OneDGridGeometry;
template<class GridImp>
class OneDGridGeometry <0, 1, GridImp> :
public GeometryDefaultImplementation <0, 1, GridImp,OneDGridGeometry>
{
template <int codim_, int dim_, class GridImp_>
friend class OneDGridEntity;
template <int mydim_, int coorddim_, class GridImp_>
friend class OneDGridGeometry;
public:
OneDGridGeometry() : storeCoordsLocally_(false) {}
//! return the element type identifier (vertex)
GeometryType type () const {return GeometryType(0);}
//! here we have always an affine geometry
bool affine() const { return true; }
//! return the number of corners of this element (==1)
int corners () const {return 1;}
//! access to coordinates of corners. Index is the number of the corner
const FieldVector<typename GridImp::ctype, 1>& operator[] (int i) const {
return (storeCoordsLocally_) ? pos_ : target_->pos_;
}
/** \brief access to coordinates of a corner */
const FieldVector< typename GridImp::ctype, 1 > corner ( const int i ) const
{
return (storeCoordsLocally_ ? pos_ : target_->pos_);
}
/** \brief Maps a local coordinate within reference element to
* global coordinate in element */
FieldVector<typename GridImp::ctype, 1> global (const FieldVector<typename GridImp::ctype, 0>& local) const {
return (storeCoordsLocally_) ? pos_ : target_->pos_;
}
/** \brief Maps a global coordinate within the element to a
* local coordinate in its reference element */
FieldVector<typename GridImp::ctype, 0> local (const FieldVector<typename GridImp::ctype, 1>& global) const {
FieldVector<typename GridImp::ctype, 0> l;
return l;
}
/** \brief !!!
This method really doesn't make much sense for a zero-dimensional
object. It always returns '1'.
*/
typename GridImp::ctype integrationElement (const FieldVector<typename GridImp::ctype, 0>& local) const {
return 1;
}
//! The Jacobian matrix of the mapping from the reference element to this element
const FieldMatrix< typename GridImp::ctype, 0, 1 > &
jacobianTransposed ( const FieldVector< typename GridImp::ctype, 0 > &local ) const
{
return jacTransposed_;
}
//! The Jacobian matrix of the mapping from the reference element to this element
const FieldMatrix<typename GridImp::ctype,1,0>& jacobianInverseTransposed (const FieldVector<typename GridImp::ctype, 0>& local) const {
return jacInverse_;
}
void setPosition(const typename GridImp::ctype& p) {
storeCoordsLocally_ = true;
pos_[0] = p;
}
//private:
bool storeCoordsLocally_;
// Stores the element corner positions if it is returned as geometryInFather
FieldVector<typename GridImp::ctype,1> pos_;
OneDEntityImp<0>* target_;
FieldMatrix< typename GridImp::ctype, 0, 1 > jacTransposed_;
FieldMatrix<typename GridImp::ctype,1,0> jacInverse_;
};
//**********************************************************************
//
// --OneDGridGeometry
/** \brief Defines the geometry part of a mesh entity.
* \ingroup OneDGrid
*/
template<int mydim, int coorddim, class GridImp>
class OneDGridGeometry :
public GeometryDefaultImplementation <mydim, coorddim, GridImp, OneDGridGeometry>
{
template <int codim_, int dim_, class GridImp_>
friend class OneDGridEntity;
friend class OneDGrid;
template <int cc_, int dim_, class GridImp_>
friend class OneDGridSubEntityFactory;
template <class GridImp_>
friend class OneDGridLevelIntersectionIterator;
template <class GridImp_>
friend class OneDGridLeafIntersectionIterator;
public:
OneDGridGeometry() : storeCoordsLocally_(false) {}
//! here we have always an affine geometry
bool affine() const { return true; }
/** \brief Return the element type identifier
*
* OneDGrid obviously supports only lines
*/
GeometryType type () const {return GeometryType(1);}
//! return the number of corners of this element. Corners are numbered 0...n-1
int corners () const {return 2;}
//! access to coordinates of corners. Index is the number of the corner
const FieldVector<typename GridImp::ctype, coorddim>& operator[](int i) const {
assert(i==0 || i==1);
return (storeCoordsLocally_) ? pos_[i] : target_->vertex_[i]->pos_;
}
/** \brief access to coordinates of a corner */
const FieldVector< typename GridImp::ctype, coorddim > corner ( const int i ) const
{
assert( (i == 0) || (i == 1) );
return (storeCoordsLocally_ ? pos_[ i ] : target_->vertex_[ i ]->pos_);
}
/** \brief Maps a local coordinate within reference element to
* global coordinate in element */
FieldVector<typename GridImp::ctype, coorddim> global (const FieldVector<typename GridImp::ctype, mydim>& local) const {
FieldVector<typename GridImp::ctype, coorddim> g;
g[0] = (storeCoordsLocally_)
? pos_[0][0] * (1-local[0]) + pos_[1][0] * local[0]
: target_->vertex_[0]->pos_[0] * (1-local[0]) + target_->vertex_[1]->pos_[0] * local[0];
return g;
}
/** \brief Maps a global coordinate within the element to a
* local coordinate in its reference element */
FieldVector<typename GridImp::ctype, mydim> local (const FieldVector<typename GridImp::ctype, coorddim>& global) const {
FieldVector<typename GridImp::ctype, mydim> l;
if (storeCoordsLocally_) {
l[0] = (global[0] - pos_[0][0]) / (pos_[1][0] - pos_[0][0]);
} else {
const typename GridImp::ctype& v0 = target_->vertex_[0]->pos_[0];
const typename GridImp::ctype& v1 = target_->vertex_[1]->pos_[0];
l[0] = (global[0] - v0) / (v1 - v0);
}
return l;
}
/** ???
*/
typename GridImp::ctype integrationElement (const FieldVector<typename GridImp::ctype, mydim>& local) const {
return (storeCoordsLocally_)
? pos_[1][0] - pos_[0][0]
: target_->vertex_[1]->pos_[0] - target_->vertex_[0]->pos_[0];
}
//! The Jacobian matrix of the mapping from the reference element to this element
const FieldMatrix< typename GridImp::ctype, mydim, mydim > &
jacobianTransposed ( const FieldVector< typename GridImp::ctype, mydim > &local ) const
{
if( storeCoordsLocally_ )
jacTransposed_[ 0 ][ 0 ] = (pos_[ 1 ][ 0 ] - pos_[ 0 ][ 0 ] );
else
jacTransposed_[ 0 ][ 0 ] = target_->vertex_[ 1 ]->pos_[ 0 ] - target_->vertex_[ 0 ]->pos_[ 0 ];
return jacTransposed_;
}
//! The Jacobian matrix of the mapping from the reference element to this element
const FieldMatrix<typename GridImp::ctype,mydim,mydim>& jacobianInverseTransposed (const FieldVector<typename GridImp::ctype, mydim>& local) const {
if (storeCoordsLocally_)
jacInverse_[0][0] = 1 / (pos_[1][0] - pos_[0][0]);
else
jacInverse_[0][0] = 1 / (target_->vertex_[1]->pos_[0] - target_->vertex_[0]->pos_[0]);
return jacInverse_;
}
void setPositions(const typename GridImp::ctype& p1, const typename GridImp::ctype& p2) {
storeCoordsLocally_ = true;
pos_[0][0] = p1;
pos_[1][0] = p2;
}
//private:
OneDEntityImp<1>* target_;
bool storeCoordsLocally_;
// Stores the element corner positions if it is returned as geometryInFather
FieldVector<typename GridImp::ctype,coorddim> pos_[2];
//! jacobian transposed
mutable FieldMatrix< typename GridImp::ctype, coorddim, coorddim > jacTransposed_;
//! jacobian inverse
mutable FieldMatrix<typename GridImp::ctype,coorddim,coorddim> jacInverse_;
};
namespace FacadeOptions
{
/** \brief Switch on the new implementation for the Geometry interface class
* \deprecated Eventually the new implementation will be hardwired,
* and this switch may disappear without prior warning!
*/
template< int mydim, int cdim, class GridImp>
struct StoreGeometryReference<mydim,cdim,GridImp,OneDGridGeometry>
{
static const bool v = false;
};
}
} // namespace Dune
#endif
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