/usr/include/dune/grid/geometrygrid/coordfunction.hh 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_GEOGRID_COORDFUNCTION_HH
#define DUNE_GEOGRID_COORDFUNCTION_HH
#include <dune/common/fvector.hh>
namespace Dune
{
// Internal Forward Declarations
// -----------------------------
template< class ct, unsigned int dimD, unsigned int dimR, class Impl >
class AnalyticalCoordFunction;
template< class ct, unsigned int dimR, class Impl >
class DiscreteCoordFunction;
// AnalyticalCoordFunctionInterface
// --------------------------------
/** \brief Interface class for using an analytical function to define the
* geometry of a Dune::GeometryGrid. An implementation should be derived
* from Dune::AnalyticalCoordFunction and the evaluate
* method mapping \f$ R^d\to R^r \f$ has to be supplied.
*
* \tparam ct coordinate field type (\c ct in Dune::GeometryGrid)
* \tparam dimD dimension of the domain of the mapping (\c dimension
* in the host grid).
* \tparam dimR dimension of the range of the mapping (\c dimensionworld
* in Dune::GeometryGrid)
* \tparam Impl implementation class (BN trick)
**/
template< class ct, unsigned int dimD, unsigned int dimR, class Impl >
class AnalyticalCoordFunctionInterface
{
typedef AnalyticalCoordFunctionInterface< ct, dimD, dimR, Impl > This;
friend class AnalyticalCoordFunction< ct, dimD, dimR, Impl >;
public:
typedef This Interface;
typedef Impl Implementation;
//! field type of the coordinate vector
typedef ct ctype;
//! dimension of the range vector (dimensionworld of host grid)
static const unsigned int dimDomain = dimD;
//! dimension of the range vector
static const unsigned int dimRange = dimR;
//! domain vector for the evaluate method
typedef FieldVector< ctype, dimDomain > DomainVector;
//! range vector for the evaluate method
typedef FieldVector< ctype, dimRange > RangeVector;
private:
AnalyticalCoordFunctionInterface ()
{}
AnalyticalCoordFunctionInterface ( const This & );
This &operator= ( const This & );
public:
//! evaluate method for global mapping
void evaluate ( const DomainVector &x, RangeVector &y ) const
{
return asImp().evaluate( x, y );
}
protected:
const Implementation &asImp () const
{
return static_cast< const Implementation & >( *this );
}
Implementation &asImp ()
{
return static_cast< Implementation & >( *this );
}
};
// AnalyticalCoordFunction
// -----------------------
/** @brief Derive an implementation of an analytical coordinate function
* from this class.
**/
template< class ct, unsigned int dimD, unsigned int dimR, class Impl >
class AnalyticalCoordFunction
: public AnalyticalCoordFunctionInterface< ct, dimD, dimR, Impl >
{
typedef AnalyticalCoordFunction< ct, dimD, dimR, Impl > This;
typedef AnalyticalCoordFunctionInterface< ct, dimD, dimR, Impl > Base;
public:
typedef typename Base :: DomainVector DomainVector;
typedef typename Base :: RangeVector RangeVector;
protected:
AnalyticalCoordFunction ()
{}
private:
AnalyticalCoordFunction ( const This & );
This &operator= ( const This & );
void evaluate ( const DomainVector &x, RangeVector &y ) const;
};
// DiscreteCoordFunctionInterface
// ------------------------------
/** \brief Interface class for using a discrete function to define the
* geometry of a Dune::GeometryGrid. An implementation should be derived
* from Dune::DiscreteCoordinateFunction and the evaluate method taking an entity
* of the host grid together with the number of a vertex returns the coordinate in
* \f$ R^r \f$
* of that corner. The user must ensure continuity of this mapping.
* In addition an adapt method is provided which is called whenever
* \c adapt() is called on the Dune::GeometryGrid.
*
* \tparam ct coordinate field type (\c ct in Dune::GeometryGrid)
* \tparam dimR dimension of the range of the mapping (\c dimensionworld
* in Dune::GeometryGrid)
* \tparam Impl implementation class (BN trick)
**/
template< class ct, unsigned int dimR, class Impl >
class DiscreteCoordFunctionInterface
{
typedef DiscreteCoordFunctionInterface< ct, dimR, Impl > This;
friend class DiscreteCoordFunction< ct, dimR, Impl >;
public:
typedef This Interface;
typedef Impl Implementation;
//! field type of the coordinate vector
typedef ct ctype;
//! dimension of the range vector
static const unsigned int dimRange = dimR;
//! range vector for the evaluate method
typedef FieldVector< ctype, dimRange > RangeVector;
private:
DiscreteCoordFunctionInterface ()
{}
DiscreteCoordFunctionInterface ( const This & );
This &operator= ( const This & );
public:
/** \brief evaluate method
* \param hostEntity an entity of the host grid
* \param corner the local number of the corner in the host entity
* \param y return value for the coordinate of this corner
**/
template< class HostEntity >
void evaluate ( const HostEntity &hostEntity, unsigned int corner,
RangeVector &y ) const
{
asImp().evaluate( hostEntity, corner, y );
}
/** \brief method called from grid.adapt() method to allow adaptation
* of the discrete coordinate function
**/
void adapt ()
{
asImp().adapt();
}
protected:
const Implementation &asImp () const
{
return static_cast< const Implementation & >( *this );
}
Implementation &asImp ()
{
return static_cast< Implementation & >( *this );
}
};
// DiscreteCoordFunction
// ---------------------
//
/** @brief Derive an implementation of a discrete coordinate function
* from this class.
**/
template< class ct, unsigned int dimR, class Impl >
class DiscreteCoordFunction
: public DiscreteCoordFunctionInterface< ct, dimR, Impl >
{
typedef DiscreteCoordFunction< ct, dimR, Impl > This;
typedef DiscreteCoordFunctionInterface< ct, dimR, Impl > Base;
public:
typedef typename Base :: RangeVector RangeVector;
protected:
DiscreteCoordFunction ()
{}
void adapt ()
{}
private:
DiscreteCoordFunction ( const This & );
This &operator= ( const This & );
template< class HostEntity >
void evaluate ( const HostEntity &hostEntity, unsigned int corner,
RangeVector &y ) const;
};
namespace GeoGrid
{
// isCoordFunctionInterface
// ------------------------
template< class CoordFunctionInterface >
struct isCoordFunctionInterface
{
static const bool value = false;
};
template< class ct, unsigned int dimD, unsigned int dimR, class Impl >
struct isCoordFunctionInterface
< AnalyticalCoordFunctionInterface< ct, dimD, dimR, Impl > >
{
static const bool value = true;
};
template< class ct, unsigned int dimR, class Impl >
struct isCoordFunctionInterface
< DiscreteCoordFunctionInterface< ct, dimR, Impl > >
{
static const bool value = true;
};
// isDiscreteCoordFunctionInterface
// --------------------------------
template< class CoordFunctionInterface >
struct isDiscreteCoordFunctionInterface
{
static const bool value = false;
};
template< class ct, unsigned int dimR, class Impl >
struct isDiscreteCoordFunctionInterface
< DiscreteCoordFunctionInterface< ct, dimR, Impl > >
{
static const bool value = true;
};
// AdaptCoordFunction
// ------------------
template< class CoordFunctionInterface >
struct AdaptCoordFunction
{
static void adapt ( CoordFunctionInterface &coordFunction )
{}
};
template< class ct, unsigned int dimR, class Impl >
struct AdaptCoordFunction< DiscreteCoordFunctionInterface< ct, dimR, Impl > >
{
typedef DiscreteCoordFunctionInterface< ct, dimR, Impl > CoordFunctionInterface;
static void adapt ( CoordFunctionInterface &coordFunction )
{
coordFunction.adapt();
}
};
} // namespace GeoGrid
} // namespace Dune
#endif // #ifndef DUNE_GEOGRID_COORDFUNCTION_HH
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