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Reference documentation for deal.II version 9.2.0
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Reference documentation for deal.II version 9.2.0
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#include <deal.II/hp/dof_handler.h>
Classes | |
| struct | ActiveFEIndexTransfer |
Public Types | |
| using | cell_accessor = typename ActiveSelector::CellAccessor |
| using | face_accessor = typename ActiveSelector::FaceAccessor |
| using | line_iterator = typename ActiveSelector::line_iterator |
| using | active_line_iterator = typename ActiveSelector::active_line_iterator |
| using | quad_iterator = typename ActiveSelector::quad_iterator |
| using | active_quad_iterator = typename ActiveSelector::active_quad_iterator |
| using | hex_iterator = typename ActiveSelector::hex_iterator |
| using | active_hex_iterator = typename ActiveSelector::active_hex_iterator |
| using | active_cell_iterator = typename ActiveSelector::active_cell_iterator |
| using | level_cell_iterator = typename LevelSelector::cell_iterator |
| using | cell_iterator = typename ActiveSelector::cell_iterator |
| using | face_iterator = typename ActiveSelector::face_iterator |
| using | active_face_iterator = typename ActiveSelector::active_face_iterator |
| using | level_cell_accessor = typename LevelSelector::CellAccessor |
| using | level_face_accessor = typename LevelSelector::FaceAccessor |
| using | level_face_iterator = typename LevelSelector::face_iterator |
Public Member Functions | |
| DoFHandler () | |
| DoFHandler (const Triangulation< dim, spacedim > &tria) | |
| DoFHandler (const DoFHandler &)=delete | |
| virtual | ~DoFHandler () override |
| DoFHandler & | operator= (const DoFHandler &)=delete |
| void | initialize (const Triangulation< dim, spacedim > &tria, const hp::FECollection< dim, spacedim > &fe) |
| virtual void | set_fe (const hp::FECollection< dim, spacedim > &fe) |
| virtual void | distribute_dofs (const hp::FECollection< dim, spacedim > &fe) |
| void | set_active_fe_indices (const std::vector< unsigned int > &active_fe_indices) |
| void | get_active_fe_indices (std::vector< unsigned int > &active_fe_indices) const |
| virtual void | clear () |
| void | renumber_dofs (const std::vector< types::global_dof_index > &new_numbers) |
| unsigned int | max_couplings_between_dofs () const |
| unsigned int | max_couplings_between_boundary_dofs () const |
Cell iterator functions | |
| cell_iterator | begin (const unsigned int level=0) const |
| active_cell_iterator | begin_active (const unsigned int level=0) const |
| cell_iterator | end () const |
| cell_iterator | end (const unsigned int level) const |
| active_cell_iterator | end_active (const unsigned int level) const |
 Public Member Functions inherited from Subscriptor | |
| Subscriptor () | |
| Subscriptor (const Subscriptor &) | |
| Subscriptor (Subscriptor &&) noexcept | |
| virtual | ~Subscriptor () |
| Subscriptor & | operator= (const Subscriptor &) |
| Subscriptor & | operator= (Subscriptor &&) noexcept |
| void | subscribe (std::atomic< bool > *const validity, const std::string &identifier="") const |
| void | unsubscribe (std::atomic< bool > *const validity, const std::string &identifier="") const |
| unsigned int | n_subscriptions () const |
| template<typename StreamType > | |
| void | list_subscribers (StreamType &stream) const |
| void | list_subscribers () const |
| template<class Archive > | |
| void | serialize (Archive &ar, const unsigned int version) |
Static Public Attributes | |
| static const unsigned int | dimension = dim |
| static const unsigned int | space_dimension = spacedim |
| static const bool | is_hp_dof_handler = true |
| static const unsigned int | default_fe_index = numbers::invalid_unsigned_int |
Private Types | |
| using | ActiveSelector = ::internal::DoFHandlerImplementation::Iterators< DoFHandler< dim, spacedim >, false > |
| using | LevelSelector = ::internal::DoFHandlerImplementation::Iterators< DoFHandler< dim, spacedim >, true > |
Related Functions | |
(Note that these are not member functions.) | |
Generic Functions | |
Functions to support code that generically uses both DoFHandler and hp::DoFHandler. | |
| template<int dim, int spacedim> | |
| unsigned int | max_dofs_per_cell (const hp::DoFHandler< dim, spacedim > &dh) |
| template<int dim, int spacedim> | |
| unsigned int | max_dofs_per_face (const hp::DoFHandler< dim, spacedim > &dh) |
| template<int dim, int spacedim> | |
| unsigned int | max_dofs_per_vertex (const hp::DoFHandler< dim, spacedim > &dh) |
| template<int dim, int spacedim> | |
| unsigned int | n_components (const hp::DoFHandler< dim, spacedim > &dh) |
| template<int dim, int spacedim> | |
| bool | fe_is_primitive (const hp::DoFHandler< dim, spacedim > &dh) |
Additional Inherited Members | |
| Static Public Member Functions inherited from Subscriptor | |
| static ::ExceptionBase & | ExcInUse (int arg1, std::string arg2, std::string arg3) |
| static ::ExceptionBase & | ExcNoSubscriber (std::string arg1, std::string arg2) |
Manage the distribution and numbering of the degrees of freedom for hp- FEM algorithms. This class satisfies the MeshType concept requirements.
The purpose of this class is to allow for an enumeration of degrees of freedom in the same way as the DoFHandler class, but it allows to use a different finite element on every cell. To this end, one assigns an active_fe_index to every cell that indicates which element within a collection of finite elements (represented by an object of type hp::FECollection) is the one that lives on this cell. The class then enumerates the degree of freedom associated with these finite elements on each cell of a triangulation and, if possible, identifies degrees of freedom at the interfaces of cells if they match. If neighboring cells have degrees of freedom along the common interface that do not immediate match (for example, if you have \(Q_2\) and \(Q_3\) elements meeting at a common face), then one needs to compute constraints to ensure that the resulting finite element space on the mesh remains conforming.
The whole process of working with objects of this type is explained in step-27. Many of the algorithms this class implements are described in the hp paper.
The typical workflow for using this class is to create a mesh, assign an active FE index to every active cell, calls hp::DoFHandler::distribute_dofs(), and then assemble a linear system and solve a problem on this finite element space. However, one can skip assigning active FE indices upon mesh refinement in certain circumstances. In particular, the following rules apply:
When this class is used with either a parallel::shared::Triangulation or a parallel::distributed::Triangulation, you can only set active FE indices on cells that are locally owned, using a call such as cell->set_active_fe_index(...). On the other hand, setting the active FE index on ghost or artificial cells is not allowed.
Ghost cells do acquire the information what element is active on them, however: whenever you call hp::DoFHandler::distribute_dofs(), all processors that participate in the parallel mesh exchange information in such a way that the active FE index on ghost cells equals the active FE index that was set on that processor that owned that particular ghost cell. Consequently, one can query the active_fe_index on ghost cells, just not set it by hand.
On artificial cells, no information is available about the active_fe_index used there. That's because we don't even know whether these cells exist at all, and even if they did, the current processor does not know anything specific about them. See the glossary entry on artificial cells for more information.
During refinement and coarsening, information about the active_fe_index of each cell will be automatically transferred.
However, using a parallel::distributed::Triangulation with an hp::DoFHandler requires additional attention during serialization, since no information on active FE indices will be automatically transferred. This has to be done manually using the prepare_for_serialization_of_active_fe_indices() and deserialize_active_fe_indices() functions. The former has to be called before parallel::distributed::Triangulation::save() is invoked, and the latter needs to be run after parallel::distributed::Triangulation::load(). If further data will be attached to the triangulation via the parallel::distributed::CellDataTransfer, parallel::distributed::SolutionTransfer, or Particles::ParticleHandler classes, all corresponding preparation and deserialization function calls need to happen in the same order. Consult the documentation of parallel::distributed::SolutionTransfer for more information.
Definition at line 203 of file dof_handler.h.
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Definition at line 206 of file dof_handler.h.
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Definition at line 208 of file dof_handler.h.
| using hp::DoFHandler< dim, spacedim >::level_cell_iterator = typename LevelSelector::cell_iterator |
Definition at line 318 of file dof_handler.h.
| using hp::DoFHandler< dim, spacedim >::level_cell_accessor = typename LevelSelector::CellAccessor |
Definition at line 343 of file dof_handler.h.
| using hp::DoFHandler< dim, spacedim >::level_face_accessor = typename LevelSelector::FaceAccessor |
Definition at line 344 of file dof_handler.h.
| using hp::DoFHandler< dim, spacedim >::level_face_iterator = typename LevelSelector::face_iterator |
Definition at line 346 of file dof_handler.h.
| DoFHandler< dim, spacedim >::DoFHandler |
Default Constructor.
Definition at line 1270 of file dof_handler.cc.
| DoFHandler< dim, spacedim >::DoFHandler | ( | const Triangulation< dim, spacedim > & | tria | ) |
Constructor. Take tria as the triangulation to work on.
Definition at line 1278 of file dof_handler.cc.
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Copy constructor. DoFHandler objects are large and expensive. They should not be copied, in particular not by accident, but rather deliberately constructed. As a consequence, this constructor is explicitly removed from the interface of this class.
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Destructor.
Definition at line 1291 of file dof_handler.cc.
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Copy operator. DoFHandler objects are large and expensive. They should not be copied, in particular not by accident, but rather deliberately constructed. As a consequence, this operator is explicitly removed from the interface of this class.
| void DoFHandler< dim, spacedim >::initialize | ( | const Triangulation< dim, spacedim > & | tria, |
| const hp::FECollection< dim, spacedim > & | fe | ||
| ) |
Assign a Triangulation and a FECollection to the DoFHandler and compute the distribution of degrees of freedom over the mesh.
Definition at line 1571 of file dof_handler.cc.
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Assign a hp::FECollection fe to this object.
In case a parallel::TriangulationBase is assigned to this object, the active_fe_indices will be exchanged between processors so that each one knows the indices on its own cells and all ghost cells.
Definition at line 1597 of file dof_handler.cc.
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Go through the triangulation and "distribute" the degrees of freedom needed for the given finite element. "Distributing" degrees of freedom involves allocating memory to store the indices on all entities on which degrees of freedom can be located (e.g., vertices, edges, faces, etc.) and to then enumerate all degrees of freedom. In other words, while the mesh and the finite element object by themselves simply define a finite element space \(V_h\), the process of distributing degrees of freedom makes sure that there is a basis for this space and that the shape functions of this basis are enumerated in an indexable, predictable way.
The exact order in which degrees of freedom on a mesh are ordered, i.e., the order in which basis functions of the finite element space are enumerated, is something that deal.II treats as an implementation detail. By and large, degrees of freedom are enumerated in the same order in which we traverse cells, but you should not rely on any specific numbering. In contrast, if you want a particular ordering, use the functions in namespace DoFRenumbering.
Definition at line 1633 of file dof_handler.cc.
| void DoFHandler< dim, spacedim >::set_active_fe_indices | ( | const std::vector< unsigned int > & | active_fe_indices | ) |
Go through the triangulation and set the active FE indices of all active cells to the values given in active_fe_indices.
Definition at line 1533 of file dof_handler.cc.
| void DoFHandler< dim, spacedim >::get_active_fe_indices | ( | std::vector< unsigned int > & | active_fe_indices | ) | const |
Go through the triangulation and store the active FE indices of all active cells to the vector active_fe_indices. This vector is resized, if necessary.
Definition at line 1554 of file dof_handler.cc.
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Clear all data of this object and especially delete the lock this object has to the finite element used the last time when distribute_dofs was called.
Definition at line 1795 of file dof_handler.cc.
| void DoFHandler< dim, spacedim >::renumber_dofs | ( | const std::vector< types::global_dof_index > & | new_numbers | ) |
Renumber degrees of freedom based on a list of new DoF indices for each of the degrees of freedom.
This function is called by the functions in DoFRenumbering function after computing a new ordering of the degree of freedom indices. However, it can of course also be called from user code.
i is currently locally owned, then new_numbers[locally_owned_dofs().index_within_set(i)] returns the new global DoF index of i. Since the IndexSet of locally_owned_dofs() is complete in the sequential case, the latter convention for the content of the array reduces to the former in the case that only one processor participates in the mesh.true) are of course affected by the exact renumbering performed here. For example, while the initial numbering of DoF indices done in distribute_dofs() yields a contiguous numbering, the renumbering performed by DoFRenumbering::component_wise() will, in general, not yield contiguous locally owned DoF indices. Definition at line 1805 of file dof_handler.cc.
| unsigned int DoFHandler< dim, spacedim >::max_couplings_between_dofs |
Return the maximum number of degrees of freedom a degree of freedom in the given triangulation with the given finite element may couple with. This is the maximum number of entries per line in the system matrix; this information can therefore be used upon construction of the SparsityPattern object.
The returned number is not really the maximum number but an estimate based on the finite element and the maximum number of cells meeting at a vertex. The number holds for the constrained matrix also.
As for DoFHandler::max_couplings_between_dofs(), the result of this function is often not very accurate for 3d and/or high polynomial degrees. The consequences are discussed in the documentation of the module on Sparsity patterns.
Definition at line 1872 of file dof_handler.cc.
| unsigned int DoFHandler< dim, spacedim >::max_couplings_between_boundary_dofs |
Return the number of degrees of freedom located on the boundary another dof on the boundary can couple with.
The number is the same as for max_coupling_between_dofs in one dimension less.
Definition at line 1883 of file dof_handler.cc.
| DoFHandler< dim, spacedim >::cell_iterator DoFHandler< dim, spacedim >::begin | ( | const unsigned int | level = 0 | ) | const |
Iterator to the first used cell on level level.
Definition at line 1313 of file dof_handler.cc.
| DoFHandler< dim, spacedim >::active_cell_iterator DoFHandler< dim, spacedim >::begin_active | ( | const unsigned int | level = 0 | ) | const |
Iterator to the first active cell on level level. If the given level does not contain any active cells (i.e., all cells on this level are further refined, then this function returns end_active(level) so that loops of the kind
have zero iterations, as may be expected if there are no active cells on this level.
Definition at line 1322 of file dof_handler.cc.
| DoFHandler< dim, spacedim >::cell_iterator DoFHandler< dim, spacedim >::end |
Iterator past the end; this iterator serves for comparisons of iterators with past-the-end or before-the-beginning states.
Definition at line 1338 of file dof_handler.cc.
| DoFHandler< dim, spacedim >::cell_iterator DoFHandler< dim, spacedim >::end | ( | const unsigned int | level | ) | const |
Return an iterator which is the first iterator not on level. If level is the last level, then this returns end().
Definition at line 1347 of file dof_handler.cc.
| DoFHandler< dim, spacedim >::active_cell_iterator DoFHandler< dim, spacedim >::end_active | ( | const unsigned int | level | ) | const |
Return an active iterator which is the first active iterator not on the given level. If level is the last level, then this returns end().
Definition at line 1358 of file dof_handler.cc.
| types::global_dof_index hp::DoFHandler< dim, spacedim >::n_dofs | ( | ) | const |
Return the global number of degrees of freedom. If the current object handles all degrees of freedom itself (even if you may intend to solve your linear system in parallel, such as in step-17 or step-18), then this number equals the number of locally owned degrees of freedom since this object doesn't know anything about what you want to do with it and believes that it owns every degree of freedom it knows about.
On the other hand, if this object operates on a parallel::distributed::Triangulation object, then this function returns the global number of degrees of freedom, accumulated over all processors.
In either case, included in the returned number are those DoFs which are constrained by hanging nodes, see Constraints on degrees of freedom.
Mathematically speaking, the number returned by this function equals the dimension of the finite element space (without taking into account constraints) that corresponds to (i) the mesh on which it is defined, and (ii) the finite element that is used by the current object. It also, of course, equals the number of shape functions that span this space.
| types::global_dof_index hp::DoFHandler< dim, spacedim >::n_dofs | ( | const unsigned int | level | ) | const |
The number of multilevel dofs on given level. Since hp::DoFHandler does not support multilevel methods yet, this function throws an exception ExcNotImplemented() independent of its argument.
| types::global_dof_index DoFHandler< dim, spacedim >::n_boundary_dofs |
Return the number of locally owned degrees of freedom located on the boundary.
Definition at line 1416 of file dof_handler.cc.
| types::global_dof_index hp::DoFHandler< dim, spacedim >::n_boundary_dofs | ( | const std::map< types::boundary_id, const Function< spacedim, number > * > & | boundary_ids | ) | const |
Return the number of degrees of freedom located on those parts of the boundary which have a boundary indicator listed in the given set. The reason that a map rather than a set is used is the same as described in the documentation of that variant of DoFTools::make_boundary_sparsity_pattern() that takes a map.
There is, however, another overload of this function that takes a set argument (see below).
| types::global_dof_index DoFHandler< dim, spacedim >::n_boundary_dofs | ( | const std::set< types::boundary_id > & | boundary_ids | ) | const |
Return the number of locally owned degrees of freedom located on those parts of the boundary which have a boundary indicator listed in the given set.
Definition at line 1462 of file dof_handler.cc.
| types::global_dof_index hp::DoFHandler< dim, spacedim >::n_locally_owned_dofs | ( | ) | const |
Return the number of degrees of freedom that belong to this process.
If this is a sequential DoFHandler, then the result equals that produced by n_dofs(). (Here, "sequential" means that either the whole program does not use MPI, or that it uses MPI but only uses a single MPI process, or that there are multiple MPI processes but the Triangulation on which this DoFHandler builds works only on one MPI process.) On the other hand, if we are operating on a parallel::distributed::Triangulation or parallel::shared::Triangulation, then it includes only the degrees of freedom that the current processor owns. Note that in this case this does not include all degrees of freedom that have been distributed on the current processor's image of the mesh: in particular, some of the degrees of freedom on the interface between the cells owned by this processor and cells owned by other processors may be theirs, and degrees of freedom on ghost cells are also not necessarily included.
| const IndexSet& hp::DoFHandler< dim, spacedim >::locally_owned_dofs | ( | ) | const |
Return an IndexSet describing the set of locally owned DoFs as a subset of 0..n_dofs(). The number of elements of this set equals n_locally_owned_dofs().
| const std::vector<IndexSet>& hp::DoFHandler< dim, spacedim >::locally_owned_dofs_per_processor | ( | ) | const |
Return a vector that stores the locally owned DoFs of each processor.
| const std::vector<types::global_dof_index>& hp::DoFHandler< dim, spacedim >::n_locally_owned_dofs_per_processor | ( | ) | const |
Return a vector that stores the number of degrees of freedom each processor that participates in this triangulation owns locally. The sum of all these numbers equals the number of degrees of freedom that exist globally, i.e. what n_dofs() returns.
| const IndexSet& hp::DoFHandler< dim, spacedim >::locally_owned_mg_dofs | ( | const unsigned int | level | ) | const |
Return an IndexSet describing the set of locally owned DoFs used for the given multigrid level. Since hp::DoFHandler does not support multilevel methods yet, this function throws an exception ExcNotImplemented() independent of its argument.
| const std::vector<IndexSet>& hp::DoFHandler< dim, spacedim >::locally_owned_mg_dofs_per_processor | ( | const unsigned int | level | ) | const |
Return a vector that stores the locally owned DoFs of each processor on the given level level.
| const FiniteElement<dim, spacedim>& hp::DoFHandler< dim, spacedim >::get_fe | ( | const unsigned int | index | ) | const |
Return a constant reference to the indexth finite element object that is used by this DoFHandler.
| const hp::FECollection<dim, spacedim>& hp::DoFHandler< dim, spacedim >::get_fe_collection | ( | ) | const |
Return a constant reference to the set of finite element objects that are used by this DoFHandler.
| const Triangulation<dim, spacedim>& hp::DoFHandler< dim, spacedim >::get_triangulation | ( | ) | const |
Return a constant reference to the triangulation underlying this object.
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Determine an estimate for the memory consumption (in bytes) of this object.
This function is made virtual, since a dof handler object might be accessed through a pointers to this base class, although the actual object might be a derived class.
Definition at line 1511 of file dof_handler.cc.
| void DoFHandler< dim, spacedim >::prepare_for_serialization_of_active_fe_indices |
Whenever serialization with a parallel::distributed::Triangulation as the underlying triangulation is considered, we also need to consider storing the active_fe_indices on all active cells as well.
This function registers that these indices are to be stored whenever the parallel::distributed::Triangulation::save() function is called on the underlying triangulation.
Definition at line 2170 of file dof_handler.cc.
| void DoFHandler< dim, spacedim >::deserialize_active_fe_indices |
Whenever serialization with a parallel::distributed::Triangulation as the underlying triangulation is considered, we also need to consider storing the active_fe_indices on all active cells as well.
This function deserializes and distributes the previously stored active_fe_indices on all active cells.
Definition at line 2263 of file dof_handler.cc.
| void hp::DoFHandler< dim, spacedim >::save | ( | Archive & | ar, |
| const unsigned int | version | ||
| ) | const |
Write the data of this object to a stream for the purpose of serialization.
| void hp::DoFHandler< dim, spacedim >::load | ( | Archive & | ar, |
| const unsigned int | version | ||
| ) |
Read the data of this object from a stream for the purpose of serialization.
| void hp::DoFHandler< dim, spacedim >::serialize | ( | Archive & | archive, |
| const unsigned int | version | ||
| ) |
Write and read the data of this object from a stream for the purpose of serialization.
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Setup policy and listeners based on the underlying Triangulation.
Definition at line 1708 of file dof_handler.cc.
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Free all used memory.
Definition at line 2361 of file dof_handler.cc.
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Definition at line 2334 of file dof_handler.cc.
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Definition at line 2348 of file dof_handler.cc.
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Create default tables for the active_fe_indices in the internal::hp::DoFLevel. They are initialized with a zero indicator, meaning that fe[0] is going to be used by default. This method is called before refinement and while setting the finite elements via set_fe(). It ensures each cell has a valid active_fe_index.
Definition at line 1917 of file dof_handler.cc.
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A function that will be triggered through a triangulation signal just before the triangulation is modified.
The function that stores the active_fe_flags of all cells that will be refined or coarsened before the refinement happens, so that they can be set again after refinement.
Definition at line 1962 of file dof_handler.cc.
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A function that will be triggered through a triangulation signal just after the triangulation is modified.
The function that restores the active_fe_flags of all cells that were refined.
Definition at line 1971 of file dof_handler.cc.
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A function that will be triggered through a triangulation signal just before the associated Triangulation or parallel::shared::Triangulation is modified.
The function that stores the active_fe_indices of all cells that will be refined or coarsened before the refinement happens, so that they can be set again after refinement.
Definition at line 2006 of file dof_handler.cc.
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A function that will be triggered through a triangulation signal just before the associated parallel::distributed::Triangulation is modified.
The function that stores all active_fe_indices on locally owned cells for distribution over all participating processors.
Definition at line 2026 of file dof_handler.cc.
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A function that will be triggered through a triangulation signal just after the associated Triangulation or parallel::shared::Triangulation is modified.
The function that restores the active_fe_indices of all cells that were refined or coarsened.
Definition at line 2100 of file dof_handler.cc.
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A function that will be triggered through a triangulation signal just after the associated parallel::distributed::Triangulation is modified.
The function that restores all active_fe_indices on locally owned cells that have been communicated.
Definition at line 2126 of file dof_handler.cc.
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A function that will be triggered through a triangulation signal just after the associated parallel::distributed::Triangulation has been saved.
The function frees all memory related to the transfer of active_fe_indices.
Definition at line 2234 of file dof_handler.cc.
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Definition at line 1293 of file dof_handler.h.
Definition at line 1295 of file dof_handler.h.
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Definition at line 1296 of file dof_handler.h.
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Definition at line 1298 of file dof_handler.h.
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Definition at line 1303 of file dof_handler.h.
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Definition at line 1305 of file dof_handler.h.
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Definition at line 1307 of file dof_handler.h.
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Maximal number of degrees of freedom on a cell.
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Maximal number of degrees of freedom on a face.
This function exists for both non-hp and hp DoFHandlers, to allow for a uniform interface to query this property.
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Maximal number of degrees of freedom on a vertex.
This function exists for both non-hp and hp DoFHandlers, to allow for a uniform interface to query this property.
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Number of vector components in the finite element object used by this DoFHandler.
This function exists for both non-hp and hp DoFHandlers, to allow for a uniform interface to query this property.
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Find out whether the first FiniteElement used by this DoFHandler is primitive or not.
This function exists for both non-hp and hp DoFHandlers, to allow for a uniform interface to query this property.
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Make the dimension available in function templates.
Definition at line 351 of file dof_handler.h.
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Make the space dimension available in function templates.
Definition at line 356 of file dof_handler.h.
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Make the type of this DoFHandler available in function templates.
Definition at line 361 of file dof_handler.h.
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The default index of the finite element to be used on a given cell. For the usual, non-hp DoFHandler class that only supports the same finite element to be used on all cells, the index of the finite element needs to be the same on all cells anyway, and by convention we pick zero for this value. The situation here is different, since the hp classes support the case where different finite element indices may be used on different cells. The default index consequently corresponds to an invalid value.
Definition at line 373 of file dof_handler.h.
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Address of the triangulation to work on.
Definition at line 1046 of file dof_handler.h.
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Store a copy of the finite element set given latest to distribute_dofs().
Definition at line 1051 of file dof_handler.h.
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An object that describes how degrees of freedom should be distributed and renumbered.
Definition at line 1059 of file dof_handler.h.
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Space to store the DoF numbers for the different levels. Analogous to the levels[] tree of the Triangulation objects.
Definition at line 1180 of file dof_handler.h.
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Space to store the DoF numbers for the faces. Analogous to the faces pointer of the Triangulation objects.
Definition at line 1186 of file dof_handler.h.
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A structure that contains all sorts of numbers that characterize the degrees of freedom this object works on.
For most members of this structure, there is an accessor function in this class that returns its value.
Definition at line 1195 of file dof_handler.h.
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A structure that contains all sorts of numbers that characterize the degrees of freedom on multigrid levels. Since multigrid is not currently supported, this table is not filled with valid entries.
Definition at line 1203 of file dof_handler.h.
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Array to store the indices for degrees of freedom located at vertices.
The format used here, in the form of a linked list, is the same as used for the arrays used in the internal::hp::DoFLevel hierarchy. Starting indices into this array are provided by the vertex_dof_offsets field.
Access to this field is generally through the DoFAccessor::get_vertex_dof_index() and DoFAccessor::set_vertex_dof_index() functions, encapsulating the actual data format used to the present class.
Definition at line 1217 of file dof_handler.h.
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For each vertex in the triangulation, store the offset within the vertex_dofs array where the dofs for this vertex start.
As for that array, the format is the same as described in the documentation of hp::DoFLevel.
Access to this field is generally through the Accessor::get_vertex_dof_index() and Accessor::set_vertex_dof_index() functions, encapsulating the actual data format used to the present class.
Definition at line 1231 of file dof_handler.h.
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We embed our data structure into a pointer to control that all transfer related data only exists during the actual transfer process.
Definition at line 1283 of file dof_handler.h.
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A list of connections with which this object connects to the triangulation to get information about when the triangulation changes.
Definition at line 1289 of file dof_handler.h.
1.8.17