#include <dune/grid/common/grid.hh>

Public Types
typedef GridFamily::Traits	Traits
	The traits of this class. More...

Exported types
typedef GridFamily::Traits::LeafGridView	LeafGridView
	type of view for leaf grid

typedef GridFamily::Traits::LevelGridView	LevelGridView
	type of view for level grid

typedef GridFamily::Traits::LeafIntersection	LeafIntersection
	A type that is a model of Dune::Intersection, an intersections of two codimension 1 of two codimension 0 entities in the leaf view.

typedef GridFamily::Traits::LevelIntersection	LevelIntersection
	A type that is a model of Dune::Intersection, an intersections of two codimension 1 of two codimension 0 entities in a level view.

typedef GridFamily::Traits::LeafIntersectionIterator	LeafIntersectionIterator
	A type that is a model of Dune::IntersectionIterator which is an iterator that allows to examine, but not to modify, the intersections of codimension 1 of an leaf element (entity of codimension 0) with other leaf elements.

typedef GridFamily::Traits::LevelIntersectionIterator	LevelIntersectionIterator
	A type that is a model of Dune::IntersectionIterator which is an iterator that allows to examine, but not to modify, the intersections of codimension 1 of an element (entity of codimension 0) with other elements on the same level.

typedef GridFamily::Traits::HierarchicIterator	HierarchicIterator
	A type that is a model of Dune::HierarchicIterator A type of iterator that allows to examine, but not to modify, entities of codimension 0 that result from refinement of an entity of codimension 0.

typedef GridFamily::Traits::LevelIndexSet	LevelIndexSet
	A type that is a model of Dune::IndexSet which provides a consecutive, but non persistent, numbering for entities on a grid level.

typedef GridFamily::Traits::LeafIndexSet	LeafIndexSet
	A type that is a model of Dune::IndexSet which provides a consecutive, but non persistent, numbering for entities in the leaf grid.

typedef GridFamily::Traits::GlobalIdSet	GlobalIdSet
	A type that is a model of Dune::IdSet which provides a unique and persistent numbering for all entities in the grid. The numbering is unique over all processes over which the grid is partitioned. The numbering is not necessarily consecutive.

typedef GridFamily::Traits::LocalIdSet	LocalIdSet
	A type that is a model of Dune::IdSet which provides a unique and persistent numbering for all entities in the grid. The numbering is only unique in a single process and it is not necessarily consecutive.

using	Communication = typename GridFamily::Traits::Communication
	A type that is a model of Dune::Communication. It provides a portable way for communication on the set of processes used by the grid.

typedef ct	ctype
	Define type used for coordinates in grid module.

Public Member Functions
Traits::LevelGridView	levelGridView (int level) const
	View for a grid level for All_Partition.

Traits::LeafGridView	leafGridView () const
	View for the leaf grid for All_Partition.

Traits::LeafIntersectionIterator	ileafbegin (const typename Traits::template Codim< 0 >::Entity &entity) const
	obtain begin intersection iterator on the leaf level

Traits::LeafIntersectionIterator	ileafend (const typename Traits::template Codim< 0 >::Entity &entity) const
	obtain end intersection iterator on the leaf level

Traits::LevelIntersectionIterator	ilevelbegin (const typename Traits::template Codim< 0 >::Entity &entity) const
	obtain begin intersection iterator on the entity level

Traits::LevelIntersectionIterator	ilevelend (const typename Traits::template Codim< 0 >::Entity &entity) const
	obtain end intersection iterator on the entity level

bool	mark (int refCount, const typename Traits ::template Codim< 0 >::Entity &e)
	Marks an entity to be refined/coarsened in a subsequent adapt. More...

int	getMark (const typename Traits::template Codim< 0 >::Entity &e) const
	returns adaptation mark for given entity, i.e. here the default implementation returns 0. More...

bool	adapt ()
	Refine all positive marked leaf entities coarsen all negative marked entities if possible. More...

bool	preAdapt ()
	returns true, if at least one entity is marked for adaption

void	postAdapt ()
	clean up some markers

bool	loadBalance ()
	default implementation of load balance does nothing and returns false

template<class DataHandle >
bool	loadBalance (DataHandle &data)
	default implementation of load balance does nothing and returns false

Size methods
int	maxLevel () const
	Return maximum level defined in this grid. Levels are numbered 0 ... maxLevel with 0 the coarsest level.

int	size (int level, int codim) const
	Return number of grid entities of a given codim on a given level in this process.

int	size (int codim) const
	Return number of leaf entities of a given codim in this process.

int	size (int level, GeometryType type) const
	Return number of entities per level and geometry type in this process.

int	size (GeometryType type) const
	Return number of leaf entities per geometry type in this process.

size_t	numBoundarySegments () const
	returns the number of boundary segments within the macro grid More...

Access to index and id sets
const GlobalIdSet &	globalIdSet () const
	return const reference to the grids global id set

const LocalIdSet &	localIdSet () const
	return const reference to the grids local id set

const LevelIndexSet &	levelIndexSet (int level) const
	return const reference to the grids level index set for level level

const LeafIndexSet &	leafIndexSet () const
	return const reference to the grids leaf index set

Adaptivity and grid refinement
void	globalRefine (int refCount)
	Refine the grid refCount times using the default refinement rule. More...

bool	mark (int refCount, const typename Codim< 0 >::Entity &e)
	Marks an entity to be refined/coarsened in a subsequent adapt. More...

int	getMark (const typename Codim< 0 >::Entity &e) const
	returns adaptation mark for given entity More...

Static Public Attributes
Exported constants
static constexpr int	dimension = dim
	The dimension of the grid.

static constexpr int	dimensionworld = dimworld
	The dimension of the world the grid lives in.

Parallel data distribution and communication
const Communication &	comm () const
	return const reference to a communication object. The return type is a model of Dune::Communication.

template<class EntitySeed >
Codim< EntitySeed::codimension >::Entity	entity (const EntitySeed &seed) const
	obtain Entity from EntitySeed.

GridImp &	asImp ()
	Barton-Nackman trick.

const GridImp &	asImp () const
	Barton-Nackman trick.

Detailed Description

template<int dim, int dimworld, class ct, class GridFamily>
class Dune::GridDefaultImplementation< dim, dimworld, ct, GridFamily >

A Grid is a container of grid entities. Given a dimension dim these entities have a codimension codim with 0 <= codim <= dim.

The Grid is assumed to be hierachically refined and nested. It enables iteration over entities of a given level and codimension.

The grid can be non-matching.

All information is provided to allocate degrees of freedom in appropriate vector data structures (which are not part of this module).

Template class Grid defines a "base class" for all grids.

Classes implementing the Grid Interface

Dune::AlbertaGrid
Provides the simplicial meshes of the finite element tool box ALBERTA (http://www.alberta-fem.de/) written by Kunibert Siebert and Alfred Schmidt.
Dune::OneDGrid
Onedimensional adaptive grid
Dune::UGGrid
Provides the meshes of the finite element toolbox UG3. (described in https://doi.org/10.1007/s007910050003).
Dune::YaspGrid (Yet Another Structured Parallel Grid)
Provides a distributed structured cube mesh.

Member Typedef Documentation

◆ Traits

template<int dim, int dimworld, class ct , class GridFamily >

typedef GridFamily::Traits Dune::GridDefaultImplementation< dim, dimworld, ct, GridFamily >::Traits

The traits of this class.

Presents the typedefs as described in GridTraits.

Member Function Documentation

◆ adapt()

template<int dim, int dimworld, class ct , class GridFamily >

bool Dune::GridDefaultImplementation< dim, dimworld, ct, GridFamily >::adapt ( )

inline

Refine all positive marked leaf entities coarsen all negative marked entities if possible.

Returns: true if a least one entity was refined

Note: this default implementation always returns false so grid with no adaptation doesn't need to implement these methods

◆ getMark() [1/2]

template<int dim, int dimworld, class ct , class GridFamily >

int Dune::Grid< dim, dimworld, ct, GridFamily >::getMark ( const typename Codim< 0 >::Entity & e ) const

inlineinherited

returns adaptation mark for given entity

Parameters

[in] e Entity for which adaptation mark should be determined

Returns: int adaptation mark currently set for given Entity e

References Dune::Grid< dim, dimworld, ct, GridFamily >::asImp().

◆ getMark() [2/2]

template<int dim, int dimworld, class ct , class GridFamily >

int Dune::GridDefaultImplementation< dim, dimworld, ct, GridFamily >::getMark ( const typename Traits::template Codim< 0 >::Entity & e ) const

inline

returns adaptation mark for given entity, i.e. here the default implementation returns 0.

Parameters

[in] e Entity for which adaptation mark should be determined

Returns: int adaptation mark, here the default value 0 is returned

◆ globalRefine()

template<int dim, int dimworld, class ct , class GridFamily >

void Dune::Grid< dim, dimworld, ct, GridFamily >::globalRefine ( int refCount )

inlineinherited

Refine the grid refCount times using the default refinement rule.

This behaves like marking all elements for refinement and then calling preAdapt, adapt and postAdapt. The state after globalRefine is comparable to the state after postAdapt.

References Dune::Grid< dim, dimworld, ct, GridFamily >::asImp(), CHECK_AND_CALL_INTERFACE_IMPLEMENTATION, and Dune::Grid< dim, dimworld, ct, GridFamily >::globalRefine().

Referenced by checkGrid(), and Dune::Grid< dim, dimworld, ct, GridFamily >::globalRefine().

◆ mark() [1/2]

template<int dim, int dimworld, class ct , class GridFamily >

bool Dune::Grid< dim, dimworld, ct, GridFamily >::mark	(	int	refCount,
		const typename Codim< 0 >::Entity &	e
	)

inlineinherited

Marks an entity to be refined/coarsened in a subsequent adapt.

Parameters

[in]	refCount	Number of subdivisions that should be applied. Negative value means coarsening.
[in]	e	Entity that should be marked

Returns: true if Entity was marked, false otherwise.

References Dune::Grid< dim, dimworld, ct, GridFamily >::asImp().

◆ mark() [2/2]

template<int dim, int dimworld, class ct , class GridFamily >

bool Dune::GridDefaultImplementation< dim, dimworld, ct, GridFamily >::mark	(	int	refCount,
		const typename Traits ::template Codim< 0 >::Entity &	e
	)

inline

Marks an entity to be refined/coarsened in a subsequent adapt.

Parameters

[in]	refCount	Number of subdivisions that should be applied. Negative value means coarsening.
[in]	e	Entity to Entity that should be refined

Returns: true if Entity was marked, false otherwise.

Note

default implementation is: return false; for grids with no adaptation.
for the grid programmer: this method is implemented as a template method, because the Entity type is not defined when the class is instantiated You won't need this trick in the implementation. In your implementation you should use it as
bool mark( int refCount,

typename Traits::template Codim<0>::Entity & e ).

Dune::GridDefaultImplementation::mark
bool mark(int refCount, const typename Traits ::template Codim< 0 >::Entity &e)
Marks an entity to be refined/coarsened in a subsequent adapt.
Definition: grid.hh:929

Dune::Grid::Codim
A Traits struct that collects all associated types of one implementation.
Definition: grid.hh:411

This template method will vanish due to the inheritance rules.

◆ numBoundarySegments()

template<int dim, int dimworld, class ct , class GridFamily >

size_t Dune::Grid< dim, dimworld, ct, GridFamily >::numBoundarySegments ( ) const

inlineinherited

returns the number of boundary segments within the macro grid

Returns: number of boundary segments within the macro grid

The documentation for this class was generated from the following files:

dune/grid/common/geometry.hh
dune/grid/common/grid.hh

DUNE Distributed and Unified Numerics Environment

DUNE PDELab (git)

Public Types

Public Member Functions

Static Public Attributes

Parallel data distribution and communication

Detailed Description

Member Typedef Documentation

◆ Traits

Member Function Documentation

◆ adapt()

◆ getMark() [1/2]

◆ getMark() [2/2]

◆ globalRefine()

◆ mark() [1/2]

◆ mark() [2/2]

◆ numBoundarySegments()