/usr/include/dune/grid/geometrygrid/entity.hh is in libdune-grid-dev 2.4.1-1.
This file is owned by root:root, with mode 0o644.
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// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_GEOGRID_ENTITY_HH
#define DUNE_GEOGRID_ENTITY_HH
#include <dune/common/nullptr.hh>
#include <dune/geometry/referenceelements.hh>
#include <dune/grid/common/grid.hh>
#include <dune/grid/geometrygrid/capabilities.hh>
#include <dune/grid/geometrygrid/cornerstorage.hh>
namespace Dune
{
namespace GeoGrid
{
// Internal Forward Declarations
// -----------------------------
/** \class EntityBase
* \brief actual implementation of the entity
* \ingroup GeoGrid
*
* \tparam codim codimension of the entity
* \tparam Grid GeometryGrid, this entity belongs to
* \tparam fake \b true, if the host grid does not provide this entity
* (do not specify, the defualt value is already the
* intended use)
*/
template< int codim, class Grid, bool fake = !(Capabilities::hasHostEntity< Grid, codim >::v) >
class EntityBase;
/** \class Entity
* \brief DUNE-conform implementation of the entity
* \ingroup GeoGrid
*
* This class merely changes the template parameters of the entity to make
* DUNE happy. The actual implementation of the entity can be found in
* EntityBase.
*
* \tparam codim codimension of the entity
* \tparam dim dimension of the Grid (redundant information)
* \tparam Grid GeometryGrid, this entity belongs to
*/
template< int codim, int dim, class Grid >
class Entity;
// External Forward Declarations
// -----------------------------
template< class Grid >
class HierarchicIterator;
template< class Grid, class HostIntersectionIterator >
class IntersectionIterator;
// EntityBase (real)
// -----------------
/** \copydoc EntityBase
*
* This specialization implements the case, where the host grid provides
* the entity for this codimension, i.e., \em fake = \b false.
*
* \nosubgrouping
*/
template< int codim, class Grid >
class EntityBase< codim, Grid, false >
{
typedef typename remove_const< Grid >::type::Traits Traits;
public:
/** \name Attributes
* \{ */
//! codimensioon of the entity
static const int codimension = codim;
//! dimension of the grid
static const int dimension = Traits::dimension;
//! dimension of the entity
static const int mydimension = dimension - codimension;
//! dimension of the world
static const int dimensionworld = Traits::dimensionworld;
//! \b true, if the entity is faked, i.e., if there is no corresponding host entity
static const bool fake = false;
/** \} */
/** \name Types Required by DUNE
* \{ */
//! coordinate type of the grid
typedef typename Traits::ctype ctype;
//! type of corresponding geometry
typedef typename Traits::template Codim< codimension >::Geometry Geometry;
/** \} */
private:
typedef typename Traits::HostGrid HostGrid;
typedef typename Traits::CoordFunction CoordFunction;
public:
/** \name Host Types
* \{ */
//! type of corresponding host entity
typedef typename HostGrid::template Codim< codimension >::Entity HostEntity;
//! type of corresponding host entity pointer
typedef typename HostGrid::template Codim< codimension >::EntityPointer HostEntityPointer;
//! type of corresponding entity seed
typedef typename Traits::template Codim< codimension >::EntitySeed EntitySeed;
//! type of host elements, i.e., of host entities of codimension 0
typedef typename HostGrid::template Codim< 0 >::Entity HostElement;
/** \} */
typedef typename Traits::template Codim< codim >::GeometryImpl GeometryImpl;
private:
typedef typename HostGrid::template Codim< codimension >::Geometry HostGeometry;
typedef GeoGrid::CoordVector< mydimension, Grid, fake > CoordVector;
public:
/** \name Construction, Initialization and Destruction
* \{ */
EntityBase ()
: hostEntity_()
, grid_( nullptr )
, geo_()
{}
EntityBase ( const Grid &grid, const EntitySeed &seed )
: hostEntity_( grid.hostGrid().entity( grid.getRealImplementation(seed).hostEntitySeed() ) )
, grid_( &grid )
{}
EntityBase ( const Grid &grid, const HostElement &hostElement, int i )
: hostEntity_( hostElement.template subEntity<codim>(i) )
, grid_( &grid )
{}
EntityBase ( const GeometryImpl &geo, const HostEntity &hostEntity )
: hostEntity_( hostEntity )
, grid_( &geo.grid() )
, geo_( geo )
{}
EntityBase ( const GeometryImpl &geo, HostEntity&& hostEntity )
: hostEntity_( std::move( hostEntity ) )
, grid_( &geo.grid() )
, geo_( geo )
{}
EntityBase ( const Grid &grid, const HostEntity& hostEntity )
: hostEntity_( hostEntity )
, grid_( &grid )
{}
EntityBase ( const Grid &grid, HostEntity&& hostEntity )
: hostEntity_( std::move( hostEntity ) )
, grid_( &grid )
{}
EntityBase ( const EntityBase &other )
: hostEntity_( other.hostEntity_ )
, grid_( other.grid_ )
, geo_( other.geo_ )
{}
EntityBase ( EntityBase&& other )
: hostEntity_( std::move( other.hostEntity_ ) )
, grid_( other.grid_ )
, geo_( std::move( other.geo_ ) )
{}
/** \} */
const EntityBase &operator= ( const EntityBase &other )
{
hostEntity_ = other.hostEntity_;
grid_ = other.grid_;
geo_ = other.geo_;
return *this;
}
const EntityBase &operator= ( EntityBase&& other )
{
hostEntity_ = std::move( other.hostEntity_ );
grid_ = std::move( other.grid_ );
geo_ = std::move( other.geo_ );
return *this;
}
/** \brief compare two entities */
bool equals ( const EntityBase &other) const
{
return hostEntity_ == other.hostEntity_;
}
public:
/** \name Methods Shared by Entities of All Codimensions
* \{ */
/** \brief obtain the name of the corresponding reference element
*
* This type can be used to access the DUNE reference element.
*/
GeometryType type () const
{
return hostEntity().type();
}
/** \brief obtain the level of this entity */
int level () const
{
return hostEntity().level();
}
/** \brief obtain the partition type of this entity */
PartitionType partitionType () const
{
return hostEntity().partitionType();
}
/** obtain the geometry of this entity
*
* Each DUNE entity encapsulates a geometry object, representing the map
* from the reference element to world coordinates. Wrapping the geometry
* is the main objective of the GeometryGrid.
*
* The GeometryGrid provides geometries of order 1, obtained by
* interpolation of its corners \f$y_i\f$. There corners are calculated
* from the corners \f$x_i\f$ of the host geometry through the
* GeometryGrid's coordinate function \f$c\f$, i.e.,
* \f$y_i = c( x_i )\f$.
*
* \returns a const reference to the geometry
*/
Geometry geometry () const
{
if( !geo_ )
{
CoordVector coords( hostEntity(), grid().coordFunction() );
geo_ = GeometryImpl( grid(), type(), coords );
}
return Geometry( geo_ );
}
/** \brief return EntitySeed of host grid entity */
EntitySeed seed () const { return typename EntitySeed::Implementation( hostEntity().seed() ); }
/** \} */
/** \name Methods Supporting the Grid Implementation
* \{ */
const Grid &grid () const { assert( grid_ ); return *grid_; }
const HostEntity &hostEntity () const
{
return hostEntity_;
}
/** \brief initiliaze an entity
*
* \param[in] hostEntity reference to the host entity
*
*/
void initialize ( const HostEntity &hostEntity ) { hostEntity_ = hostEntity; }
/** \brief obtain the entity's index from a host IndexSet
*
* \internal This method is provided by the entity, because its
* implementation is different for fake and non-fake entities.
*
* \param[in] indexSet host IndexSet to use
*/
template< class HostIndexSet >
typename HostIndexSet::IndexType
index ( const HostIndexSet &indexSet ) const
{
return indexSet.template index< codimension >( hostEntity() );
}
/** \brief obtain the index of a subentity from a host IndexSet
*
* \internal This method is provided by the entity, because its
* implementation is different for fake and non-fake entities.
*
* \param[in] indexSet host IndexSet to use
* \param[in] i number of the subentity
* \param[in] cd codimension of the subentity
*/
template< class HostIndexSet >
typename HostIndexSet::IndexType
subIndex ( const HostIndexSet &indexSet, int i, unsigned int cd ) const
{
return indexSet.subIndex( hostEntity(), i, cd );
}
/** \brief check whether the entity is contained in a host index set
*
* \internal This method is provided by the entity, because its
* implementation is different for fake and non-fake entities.
*
* \param indexSet host IndexSet to use
*/
template< class HostIndexSet >
bool isContained ( const HostIndexSet &indexSet ) const
{
return indexSet.contains( hostEntity() );
}
/** \brief obtain the entity's id from a host IdSet
*
* \internal This method is provided by the entity, because its
* implementation is different for fake and non-fake entities.
*
* \param idSet host IdSet to use
*/
template< class HostIdSet >
typename HostIdSet::IdType id ( const HostIdSet &idSet ) const
{
return idSet.template id< codimension >( hostEntity() );
}
/** \} */
private:
HostEntity hostEntity_;
const Grid *grid_;
mutable GeometryImpl geo_;
};
// EntityBase (fake)
// -----------------
/** \copydoc EntityBase
*
* This specialization implements the case, where the host grid does not
* provide the entity for this codimension, i.e., \em fake = \b true.
*
* \nosubgrouping
*/
template< int codim, class Grid >
class EntityBase< codim, Grid, true >
{
typedef typename remove_const< Grid >::type::Traits Traits;
public:
/** \name Attributes
* \{ */
//! codimensioon of the entity
static const int codimension = codim;
//! dimension of the grid
static const int dimension = Traits::dimension;
//! dimension of the entity
static const int mydimension = dimension - codimension;
//! dimension of the world
static const int dimensionworld = Traits::dimensionworld;
//! \b true, if the entity is faked, i.e., if there is no corresponding host entity
static const bool fake = true;
/** \} */
/** \name Types Required by DUNE
* \{ */
//! coordinate type of the grid
typedef typename Traits::ctype ctype;
//! type of corresponding geometry
typedef typename Traits::template Codim< codimension >::Geometry Geometry;
/** \} */
private:
typedef typename Traits::HostGrid HostGrid;
typedef typename Traits::CoordFunction CoordFunction;
public:
/** \name Host Types
* \{ */
//! type of corresponding host entity
typedef typename HostGrid::template Codim< codimension >::Entity HostEntity;
//! type of corresponding host entity pointer
typedef typename HostGrid::template Codim< codimension >::EntityPointer HostEntityPointer;
//! type of corresponding entity seed
typedef typename Traits::template Codim< codimension >::EntitySeed EntitySeed;
//! type of host elements, i.e., of host entities of codimension 0
typedef typename HostGrid::template Codim< 0 >::Entity HostElement;
/** \} */
typedef typename Traits::template Codim< codimension >::GeometryImpl GeometryImpl;
private:
typedef typename HostGrid::template Codim< 0 >::Geometry HostGeometry;
typedef typename HostGrid::template Codim< dimension >::EntityPointer HostVertexPointer;
typedef GeoGrid::CoordVector< mydimension, Grid, fake > CoordVector;
public:
/** \name Construction, Initialization and Destruction
* \{ */
EntityBase () : geo_(), hostElement_(), subEntity_( -1 ) {}
EntityBase ( const Grid &grid, const EntitySeed &seed )
: hostElement_( grid.hostGrid().entity( grid.getRealImplementation(seed).hostElementSeed() ) )
, grid_( &grid )
, subEntity_( grid.getRealImplementation(seed).subEntity() )
{}
EntityBase ( const EntityBase &other )
: geo_( other.geo_ ),
hostElement_( other.hostElement_ ),
subEntity_( other.subEntity_ )
{}
EntityBase ( EntityBase &&other )
: geo_( std::move( other.geo_ ) ),
hostElement_( std::move( other.hostElement_ ) ),
subEntity_( std::move( other.subEntity_ ) )
{}
/** \} */
const EntityBase &operator= ( const EntityBase &other )
{
geo_ = other.geo_;
hostElement_ = other.hostElement_;
subEntity_ = other.subEntity_;
return *this;
}
const EntityBase &operator= ( EntityBase&& other )
{
geo_ = std::move( other.geo_ );
hostElement_ = std::move( other.hostElement_ );
subEntity_ = std::move( other.subEntity_ );
return *this;
}
/** \brief compare two entities */
bool equals ( const EntityBase &other) const
{
const bool thisEnd = (subEntity() < 0);
const bool otherEnd = (other.subEntity() < 0);
if( thisEnd || otherEnd )
return thisEnd && otherEnd;
const int lvl = level();
if( lvl != other.level() )
return false;
const typename Traits::HostGrid::Traits::LevelIndexSet &indexSet
= grid().hostGrid().levelIndexSet( lvl );
const HostElement &thisElement = hostElement();
assert( indexSet.contains( thisElement ) );
const HostElement &otherElement = other.hostElement();
assert( indexSet.contains( otherElement ) );
const int thisIndex = indexSet.subIndex( thisElement, subEntity(), codimension );
const int otherIndex = indexSet.subIndex( otherElement, other.subEntity(), codimension );
return (thisIndex == otherIndex);
}
/** \name Methods Shared by Entities of All Codimensions
* \{ */
/** \brief obtain the name of the corresponding reference element
*
* This type can be used to access the DUNE reference element.
*/
GeometryType type () const
{
const ReferenceElement< ctype, dimension > &refElement
= ReferenceElements< ctype, dimension >::general( hostElement().type() );
return refElement.type( subEntity_, codimension );
}
/** \brief obtain the level of this entity */
int level () const
{
return hostElement().level();
}
/** \brief obtain the partition type of this entity */
PartitionType partitionType () const
{
if( !(Capabilities::isParallel< HostGrid >::v) )
return InteriorEntity;
const ReferenceElement< ctype, dimension > &refElement
= ReferenceElements< ctype, dimension >::general( hostElement().type() );
PartitionType type = vertexPartitionType( refElement, 0 );
if( (type != BorderEntity) && (type != FrontEntity) )
return type;
const int numVertices = refElement.size( subEntity_, codimension, dimension );
for( int i = 1; i < numVertices; ++i )
{
PartitionType vtxType = vertexPartitionType( refElement, i );
if( (vtxType != BorderEntity) && (vtxType != FrontEntity) )
return vtxType;
if( type != vtxType )
return OverlapEntity;
}
assert( (type == BorderEntity) || (type == FrontEntity) );
return type;
}
/** obtain the geometry of this entity
*
* Each DUNE entity encapsulates a geometry object, representing the map
* from the reference element to world coordinates. Wrapping the geometry
* is the main objective of the GeometryGrid.
*
* The GeometryGrid provides geometries of order 1, obtained by
* interpolation of its corners \f$y_i\f$. There corners are calculated
* from the corners \f$x_i\f$ of the host geometry through the
* GeometryGrid's coordinate function \f$c\f$, i.e.,
* \f$y_i = c( x_i )\f$.
*
* \returns a geometry object
*/
Geometry geometry () const
{
if( !geo_ )
{
CoordVector coords( hostElement(), subEntity_, grid().coordFunction() );
geo_ = GeometryImpl( grid(), type(), coords );
}
return Geometry( geo_ );
}
/** \brief return EntitySeed of host grid entity */
EntitySeed seed () const { return typename EntitySeed::Implementation( hostElement().seed(), subEntity_ ); }
/** \} */
/** \name Methods Supporting the Grid Implementation
* \{ */
const Grid &grid () const { assert( grid_ ); return *grid_; }
const HostEntity &hostEntity () const
{
DUNE_THROW( NotImplemented, "HostGrid has no entities of codimension " << codimension << "." );
}
const HostElement &hostElement () const
{
assert( *this );
return hostElement_;
}
int subEntity () const { return subEntity_; }
/** \brief initiliaze an entity
*
* \param[in] hostElement reference to the host element
*
* \note The reference must remain valid as long as this entity is in
* use.
*/
void initialize ( const HostElement &hostElement ) { hostElement_ = hostElement; }
/** \brief obtain the entity's index from a host IndexSet
*
* \internal This method is provided by the entity, because its
* implementation is different for fake and non-fake entities.
*
* \param[in] indexSet host IndexSet to use
*/
template< class HostIndexSet >
typename HostIndexSet::IndexType index ( const HostIndexSet &indexSet ) const
{
return indexSet.subIndex( hostElement(), subEntity_, codimension );
}
/** \brief obtain the index of a subentity from a host IndexSet
*
* \internal This method is provided by the entity, because its
* implementation is different for fake and non-fake entities.
*
* \param[in] indexSet host IndexSet to use
* \param[in] i number of the subentity
* \param[in] cd codimension of the subentity
*/
template< class HostIndexSet >
typename HostIndexSet::IndexType
subIndex ( const HostIndexSet &indexSet, int i, unsigned int cd ) const
{
const ReferenceElement< ctype, dimension > &refElement
= ReferenceElements< ctype, dimension >::general( hostElement().type() );
const int j = refElement.subEntity( subEntity_, codimension, i, codimension+cd );
return indexSet.subIndex( hostElement(), j, codimension+cd );
}
/** \brief check whether the entity is contained in a host index set
*
* \internal This method is provided by the entity, because its
* implementation is different for fake and non-fake entities.
*
* \param indexSet host IndexSet to use
*/
template< class HostIndexSet >
bool isContained ( const HostIndexSet &indexSet ) const
{
return indexSet.contains( hostElement() );
}
/** \brief obtain the entity's id from a host IdSet
*
* \internal This method is provided by the entity, because its
* implementation is different for fake and non-fake entities.
*
* \param idSet host IdSet to use
*/
template< class HostIdSet >
typename HostIdSet::IdType id ( const HostIdSet &idSet ) const
{
return idSet.subId( hostElement(), subEntity_, codimension );
}
/** \} */
private:
PartitionType
vertexPartitionType ( const ReferenceElement< ctype, dimension > &refElement, int i ) const
{
const int j = refElement.subEntity( subEntity_, codimension, 0, dimension );
return hostElement().template subEntity< dimension >( j )->partitionType();
}
private:
HostElement hostElement_;
unsigned int subEntity_;
const Grid *grid_;
mutable GeometryImpl geo_;
};
// Entity
// ------
template< int codim, int dim, class Grid >
class Entity
: public EntityBase< codim, Grid >
{
typedef EntityBase< codim, Grid > Base;
public:
typedef typename Base::HostEntity HostEntity;
typedef typename Base::HostElement HostElement;
typedef typename Base::GeometryImpl GeometryImpl;
typedef typename Base::EntitySeed EntitySeed;
Entity () : Base() {}
Entity ( const Grid &grid, const EntitySeed &seed ) : Base( grid, seed ) {}
Entity ( const Grid &grid, const HostEntity &hostEntity ) : Base( grid, hostEntity ) {}
Entity ( const Grid &grid, HostEntity&& hostEntity ) : Base( grid, std::move( hostEntity ) ) {}
Entity ( const Grid &grid, const HostElement &hostEntity, int i ) : Base( grid, hostEntity, i ) {}
};
// Entity for codimension 0
// ------------------------
template< int dim, class Grid >
class Entity< 0, dim, Grid >
: public EntityBase< 0, Grid >
{
typedef EntityBase< 0, Grid > Base;
typedef typename remove_const< Grid >::type::Traits Traits;
typedef typename Traits::HostGrid HostGrid;
public:
/** \name Attributes
* \{ */
//! codimensioon of the entity
static const int codimension = Base::codimension;
//! dimension of the grid
static const int dimension = Base::dimension;
//! dimension of the entity
static const int mydimension = Base::mydimension;
//! dimension of the world
static const int dimensionworld = Base::dimensionworld;
//! \b true, if the entity is faked, i.e., if there is no corresponding host entity
static const bool fake = Base::fake;
/** \} */
/** \name Types Required by DUNE
* \{ */
//! type of corresponding local geometry
typedef typename Traits::template Codim< codimension >::LocalGeometry LocalGeometry;
//! type of corresponding entity pointer
typedef typename Traits::template Codim< codimension >::EntityPointer EntityPointer;
typedef Dune::Entity< 0, dim, Grid, Dune::GeoGrid::Entity > EntityFacade;
//! type of hierarchic iterator
typedef typename Traits::HierarchicIterator HierarchicIterator;
//! type of leaf intersection iterator
typedef typename Traits::LeafIntersectionIterator LeafIntersectionIterator;
//! type of level intersection iterator
typedef typename Traits::LevelIntersectionIterator LevelIntersectionIterator;
/** \} */
typedef typename Base::HostEntity HostEntity;
typedef typename Base::HostElement HostElement;
typedef typename Base::GeometryImpl GeometryImpl;
typedef typename Base::EntitySeed EntitySeed;
using Base::grid;
using Base::hostEntity;
Entity () : Base() {}
Entity ( const Grid &grid, const HostEntity &hostEntity ) : Base( grid, hostEntity ) {}
Entity ( const Grid &grid, HostEntity&& hostEntity ) : Base( grid, std::move( hostEntity ) ) {}
Entity ( const GeometryImpl &geo, const HostEntity& hostEntity ) : Base( geo, hostEntity ) {}
Entity ( const GeometryImpl &geo, HostEntity &&hostEntity ) : Base( geo, std::move( hostEntity ) ) {}
Entity ( const Grid &grid, const EntitySeed &seed ) : Base( grid, seed ) {}
Entity ( const Grid &grid, const HostEntity &hostEntity, int i ) : Base( grid, hostEntity )
{
assert( i == 0 );
}
template< int codim >
int count () const
{
return hostEntity().template count< codim >();
}
unsigned int subEntities (unsigned int codim) const
{
return hostEntity().subEntities(codim);
}
template< int codim >
typename Grid::template Codim< codim >::Entity
subEntity ( int i ) const
{
typedef typename Traits::template Codim< codim >::EntityImpl EntityImpl;
return EntityImpl( grid(), hostEntity(), i );
}
LevelIntersectionIterator ilevelbegin () const
{
typedef GeoGrid::IntersectionIterator< Grid, typename HostGrid::LevelIntersectionIterator > LevelIntersectionIteratorImpl;
return LevelIntersectionIteratorImpl( *this, hostEntity().ilevelbegin() );
}
LevelIntersectionIterator ilevelend () const
{
typedef GeoGrid::IntersectionIterator< Grid, typename HostGrid::LevelIntersectionIterator > LevelIntersectionIteratorImpl;
return LevelIntersectionIteratorImpl( *this, hostEntity().ilevelend() );
}
LeafIntersectionIterator ileafbegin () const
{
typedef GeoGrid::IntersectionIterator< Grid, typename HostGrid::LeafIntersectionIterator > LeafIntersectionIteratorImpl;
return LeafIntersectionIteratorImpl( *this, hostEntity().ileafbegin() );
}
LeafIntersectionIterator ileafend () const
{
typedef GeoGrid::IntersectionIterator< Grid, typename HostGrid::LeafIntersectionIterator > LeafIntersectionIteratorImpl;
return LeafIntersectionIteratorImpl( *this, hostEntity().ileafend() );
}
bool hasBoundaryIntersections () const
{
return hostEntity().hasBoundaryIntersections();
}
bool isLeaf () const
{
return hostEntity().isLeaf();
}
EntityFacade father () const
{
return Entity( grid(), hostEntity().father() );
}
bool hasFather () const
{
return hostEntity().hasFather();
}
LocalGeometry geometryInFather () const
{
return hostEntity().geometryInFather();
}
HierarchicIterator hbegin ( int maxLevel ) const
{
typedef GeoGrid::HierarchicIterator< Grid > HierarchicIteratorImpl;
return HierarchicIteratorImpl( grid(), hostEntity().hbegin( maxLevel ) );
}
HierarchicIterator hend ( int maxLevel ) const
{
typedef GeoGrid::HierarchicIterator< Grid > HierarchicIteratorImpl;
return HierarchicIteratorImpl( grid(), hostEntity().hend( maxLevel ) );
}
bool isRegular () const
{
return hostEntity().isRegular();
}
bool isNew () const
{
return hostEntity().isNew();
}
bool mightVanish () const
{
return hostEntity().mightVanish();
}
};
} // namespace GeoGrid
} // namespace Dune
#endif // #ifndef DUNE_GEOGRID_ENTITY_HH
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