hp::FEValuesBase< dim, q_dim, FEValuesType > Class Template Reference

#include <deal.II/hp/fe_values.h>

Inheritance diagram for hp::FEValuesBase< dim, q_dim, FEValuesType >:

Public Member Functions
	FEValuesBase (const MappingCollection< dim, FEValuesType::space_dimension > &mapping_collection, const FECollection< dim, FEValuesType::space_dimension > &fe_collection, const QCollection< q_dim > &q_collection, const UpdateFlags update_flags)
	FEValuesBase (const FECollection< dim, FEValuesType::space_dimension > &fe_collection, const QCollection< q_dim > &q_collection, const UpdateFlags update_flags)
	FEValuesBase (const FEValuesBase< dim, q_dim, FEValuesType > &other)
FEValuesBase &	operator= (const FEValuesBase &)=delete
void	precalculate_fe_values (const std::vector< unsigned int > &fe_indices, const std::vector< unsigned int > &mapping_indices, const std::vector< unsigned int > &q_indices)
void	precalculate_fe_values ()
const FECollection< dim, FEValuesType::space_dimension > &	get_fe_collection () const
const MappingCollection< dim, FEValuesType::space_dimension > &	get_mapping_collection () const
const QCollection< q_dim > &	get_quadrature_collection () const
UpdateFlags	get_update_flags () const
const FEValuesType &	get_present_fe_values () const

Protected Member Functions
FEValuesType &	select_fe_values (const unsigned int fe_index, const unsigned int mapping_index, const unsigned int q_index)

Protected Attributes
const SmartPointer< const FECollection< dim, FEValuesType::space_dimension >, FEValuesBase< dim, q_dim, FEValuesType > >	fe_collection
const SmartPointer< const MappingCollection< dim, FEValuesType::space_dimension >, FEValuesBase< dim, q_dim, FEValuesType > >	mapping_collection
const QCollection< q_dim >	q_collection

Private Attributes
Table< 3, std::unique_ptr< FEValuesType > >	fe_values_table
TableIndices< 3 >	present_fe_values_index
const UpdateFlags	update_flags

Detailed Description

template<int dim, int q_dim, class FEValuesType>
class hp::FEValuesBase< dim, q_dim, FEValuesType >

Base class for the hp::FE*Values classes, storing the data that is common to them. The main task of this class is to provide a table where for every combination of finite element, mapping, and quadrature object from their corresponding collection objects there is a matching FEValues, FEFaceValues, or FESubfaceValues object.

To make things more efficient, however, these FE*Values objects are only created once requested (lazy allocation). Alternatively if desired, this can be bypassed by computing all objects in advance with the corresponding precalculate_fe_values() function.

The first template parameter denotes the space dimension we are in, the second the dimensionality of the object that we integrate on, i.e. for usual hp::FEValues it is equal to the first one, while for face integration it is one less. The third template parameter indicates the type of underlying non-hp FE*Values base type, i.e. it could either be FEValues, FEFaceValues, or FESubfaceValues.

Author

Wolfgang Bangerth, 2003

Definition at line 66 of file fe_values.h.

Constructor & Destructor Documentation

FEValuesBase() [1/3]

template<int dim, int q_dim, class FEValuesType >

FEValuesBase< dim, q_dim, FEValuesType >::FEValuesBase	(	const MappingCollection< dim, FEValuesType::space_dimension > &	mapping_collection,
		const FECollection< dim, FEValuesType::space_dimension > &	fe_collection,
		const QCollection< q_dim > &	q_collection,
		const UpdateFlags	update_flags
	)

Constructor. Set the fields of this class to the values indicated by the parameters to the constructor.

Definition at line 30 of file fe_values.cc.

FEValuesBase() [2/3]

template<int dim, int q_dim, class FEValuesType >

FEValuesBase< dim, q_dim, FEValuesType >::FEValuesBase	(	const FECollection< dim, FEValuesType::space_dimension > &	fe_collection,
		const QCollection< q_dim > &	q_collection,
		const UpdateFlags	update_flags
	)

Constructor. This constructor is equivalent to the other one except that it makes the object use a \(Q_1\) mapping (i.e., an object of type MappingQGeneric(1)) implicitly.

Definition at line 50 of file fe_values.cc.

FEValuesBase() [3/3]

template<int dim, int q_dim, class FEValuesType >

FEValuesBase< dim, q_dim, FEValuesType >::FEValuesBase

(

const FEValuesBase< dim, q_dim, FEValuesType > &

other

)

Copy constructor.

Definition at line 69 of file fe_values.cc.

Member Function Documentation

operator=()

template<int dim, int q_dim, class FEValuesType >

FEValuesBase& hp::FEValuesBase< dim, q_dim, FEValuesType >::operator= ( const FEValuesBase< dim, q_dim, FEValuesType > &  )

delete

Copy operator. While objects of this type can be copy-constructed, they cannot be copied and consequently this operator is disabled.

precalculate_fe_values() [1/2]

template<int dim, int q_dim, class FEValuesType >

void FEValuesBase< dim, q_dim, FEValuesType >::precalculate_fe_values	(	const std::vector< unsigned int > &	fe_indices,
		const std::vector< unsigned int > &	mapping_indices,
		const std::vector< unsigned int > &	q_indices
	)

For timing purposes it may be useful to create all required FE*Values objects in advance, rather than computing them on request via lazy allocation as usual in this class.

This function precalculates the FE*Values objects corresponding to the provided parameters: The total of all vector entries corresponding to the same index describes an FE*Values object similarly to select_fe_values().

Definition at line 141 of file fe_values.cc.

precalculate_fe_values() [2/2]

template<int dim, int q_dim, class FEValuesType >

void FEValuesBase< dim, q_dim, FEValuesType >::precalculate_fe_values

Same as above, geared to the most common use of hp::FEValues objects in which FE, quadrature and mapping indices are similar on each individual cell.

FE*Values objects are created for every FE in the FECollection, with quadrature and mapping corresponding to the same index from the QuadratureCollection and MappingCollection, respectively.

If QuadratureCollection or MappingCollection contains only one object, it is used for all FE*Values objects.

Definition at line 178 of file fe_values.cc.

get_fe_collection()

template<int dim, int q_dim, class FEValuesType >

const FECollection< dim, FEValuesType::space_dimension > & FEValuesBase< dim, q_dim, FEValuesType >::get_fe_collection

inline

Get a reference to the collection of finite element objects used here.

Definition at line 624 of file fe_values.h.

get_mapping_collection()

template<int dim, int q_dim, class FEValuesType >

const MappingCollection< dim, FEValuesType::space_dimension > & FEValuesBase< dim, q_dim, FEValuesType >::get_mapping_collection

inline

Get a reference to the collection of mapping objects used here.

Definition at line 633 of file fe_values.h.

get_quadrature_collection()

template<int dim, int q_dim, class FEValuesType >

const QCollection< q_dim > & FEValuesBase< dim, q_dim, FEValuesType >::get_quadrature_collection

inline

Get a reference to the collection of quadrature objects used here.

Definition at line 642 of file fe_values.h.

get_update_flags()

template<int dim, int q_dim, class FEValuesType >

UpdateFlags FEValuesBase< dim, q_dim, FEValuesType >::get_update_flags

inline

Get the underlying update flags.

Definition at line 651 of file fe_values.h.

get_present_fe_values()

template<int dim, int q_dim, class FEValuesType >

const FEValuesType & FEValuesBase< dim, q_dim, FEValuesType >::get_present_fe_values

inline

Return a reference to the FEValues object selected by the last call to select_fe_values(). select_fe_values() in turn is called when you called the reinit function of the hp::FE*Values class the last time.

Definition at line 615 of file fe_values.h.

select_fe_values()

template<int dim, int q_dim, class FEValuesType >

FEValuesType & FEValuesBase< dim, q_dim, FEValuesType >::select_fe_values ( const unsigned int  fe_index, const unsigned int  mapping_index, const unsigned int  q_index  )

protected

Select a FEValues object suitable for the given FE, quadrature, and mapping indices. If such an object doesn't yet exist, create one.

The function returns a writable reference so that derived classes can also reinit() the selected FEValues object.

Definition at line 107 of file fe_values.cc.

Member Data Documentation

fe_collection

template<int dim, int q_dim, class FEValuesType >

const SmartPointer<const FECollection<dim, FEValuesType::space_dimension>, FEValuesBase<dim, q_dim, FEValuesType> > hp::FEValuesBase< dim, q_dim, FEValuesType >::fe_collection

protected

A pointer to the collection of finite elements to be used.

Definition at line 184 of file fe_values.h.

mapping_collection

template<int dim, int q_dim, class FEValuesType >

const SmartPointer< const MappingCollection<dim, FEValuesType::space_dimension>, FEValuesBase<dim, q_dim, FEValuesType> > hp::FEValuesBase< dim, q_dim, FEValuesType >::mapping_collection

protected

A pointer to the collection of mappings to be used.

Definition at line 192 of file fe_values.h.

q_collection

template<int dim, int q_dim, class FEValuesType >

const QCollection<q_dim> hp::FEValuesBase< dim, q_dim, FEValuesType >::q_collection

protected

Copy of the quadrature collection object provided to the constructor.

Definition at line 197 of file fe_values.h.

fe_values_table

template<int dim, int q_dim, class FEValuesType >

Table<3, std::unique_ptr<FEValuesType> > hp::FEValuesBase< dim, q_dim, FEValuesType >::fe_values_table

private

A table in which we store pointers to fe_values objects for different finite element, mapping, and quadrature objects from our collection. The first index indicates the index of the finite element within the fe_collection, the second the index of the mapping within the mapping collection, and the last one the index of the quadrature formula within the q_collection.

Initially, all entries have zero pointers, and we will allocate them lazily as needed in select_fe_values() or precalculate_fe_values().

Definition at line 211 of file fe_values.h.

present_fe_values_index

template<int dim, int q_dim, class FEValuesType >

TableIndices<3> hp::FEValuesBase< dim, q_dim, FEValuesType >::present_fe_values_index

private

Set of indices pointing at the fe_values object selected last time the select_fe_value() function was called.

Definition at line 217 of file fe_values.h.

update_flags

template<int dim, int q_dim, class FEValuesType >

const UpdateFlags hp::FEValuesBase< dim, q_dim, FEValuesType >::update_flags

private

Values of the update flags as given to the constructor.

Definition at line 222 of file fe_values.h.

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

• include/deal.II/hp/fe_values.h
• source/hp/fe_values.cc