Mapping< int, int >::InternalDataBase Class Reference

#include <mapping.h>

Inheritance diagram for Mapping< int, int >::InternalDataBase:

Public Member Functions
	InternalDataBase ()
virtual	~InternalDataBase ()
UpdateFlags	current_update_flags () const
bool	is_first_cell () const
virtual void	clear_first_cell ()
virtual std::size_t	memory_consumption () const
Public Member Functions inherited from Subscriptor
	Subscriptor ()
	Subscriptor (const Subscriptor &)
virtual	~Subscriptor ()
Subscriptor &	operator= (const Subscriptor &)
void	subscribe (const char *identifier=0) const
void	unsubscribe (const char *identifier=0) const
unsigned int	n_subscriptions () const
void	list_subscribers () const
	DeclException3 (ExcInUse, int, char *, std::string &,<< "Object of class "<< arg2<< " is still used by "<< arg1<< " other objects.\n"<< "(Additional information: "<< arg3<< ")\n"<< "Note the entry in the Frequently Asked Questions of "<< "deal.II (linked to from http://www.dealii.org/) for "<< "more information on what this error means.")
	DeclException2 (ExcNoSubscriber, char *, char *,<< "No subscriber with identifier \""<< arg2<< "\" did subscribe to this object of class "<< arg1)
template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Public Attributes
UpdateFlags	update_flags
UpdateFlags	update_once
UpdateFlags	update_each
std::vector< double >	volume_elements
std::vector< Point< spacedim > >	support_point_values
std::vector< Tensor < 2, spacedim > >	support_point_gradients
std::vector< Tensor < 2, spacedim > >	support_point_inverse_gradients

Private Member Functions
	InternalDataBase (const InternalDataBase &)

Private Attributes
bool	first_cell

Detailed Description

template<int, int>
class Mapping< int, int >::InternalDataBase

Base class for internal data of finite element and mapping objects. The internal mechanism is that upon construction of a FEValues objects, it asks the mapping and finite element classes that are to be used to allocate memory for their own purpose in which they may store data that only needs to be computed once. For example, most finite elements will store the values of the shape functions at the quadrature points in this object, since they do not change from cell to cell and only need to be computed once. Since different FEValues objects using different quadrature rules might access the same finite element object at the same time, it is necessary to create one such object per FEValues object. Ownership of this object is then transferred to the FEValues object, but a pointer to this object is passed to the finite element object every time it shall compute some data so that it has access to the precomputed values stored there.

Definition at line 326 of file mapping.h.

Constructor & Destructor Documentation

template<int , int >

Mapping< int, int >::InternalDataBase::InternalDataBase ( const InternalDataBase &  )

private

Copy constructor forbidden.

template<int , int >

Mapping< int, int >::InternalDataBase::InternalDataBase

(

)

Constructor. Sets UpdateFlags to update_default and first_cell to true.

template<int , int >

virtual Mapping< int, int >::InternalDataBase::~InternalDataBase ( )

virtual

Virtual destructor for derived classes

Reimplemented in FiniteElement< int, int >::InternalDataBase.

Member Function Documentation

template<int , int >

UpdateFlags Mapping< int, int >::InternalDataBase::current_update_flags

(

)

const

If first_cell==true this function returns update_flags, i.e. update_once|update_each. If first_cell==false it returns update_each.

template<int , int >

bool Mapping< int, int >::InternalDataBase::is_first_cell

(

)

const

Return whether we are presently initializing data for the first cell. The value of the field this function is returning is set to true in the constructor, and cleared by the FEValues class after the first cell has been initialized.

This function is used to determine whether we need to use the update_once flags for computing data, or whether we can use the update_each flags.

template<int , int >

virtual void Mapping< int, int >::InternalDataBase::clear_first_cell ( )

virtual

Set the first_cell flag to false. Used by the FEValues class to indicate that we have already done the work on the first cell.

Reimplemented in FESystem< dim, spacedim >::InternalData.

template<int , int >

virtual std::size_t Mapping< int, int >::InternalDataBase::memory_consumption ( ) const

virtual

Return an estimate (in bytes) or the memory consumption of this object.

Reimplemented in MappingQ1< dim, spacedim >::InternalData, MappingCartesian< dim, spacedim >::InternalData, and MappingQ< dim, spacedim >::InternalData.

Member Data Documentation

template<int , int >

UpdateFlags Mapping< int, int >::InternalDataBase::update_flags

Values updated by the constructor or by reinit.

Definition at line 353 of file mapping.h.

template<int , int >

UpdateFlags Mapping< int, int >::InternalDataBase::update_once

Values computed by constructor.

Definition at line 359 of file mapping.h.

template<int , int >

UpdateFlags Mapping< int, int >::InternalDataBase::update_each

Values updated on each cell by reinit.

Definition at line 365 of file mapping.h.

template<int , int >

std::vector<double> Mapping< int, int >::InternalDataBase::volume_elements

The determinant of the Jacobian in each quadrature point. Filled if update_volume_elements.

Definition at line 424 of file mapping.h.

template<int , int >

std::vector<Point<spacedim> > Mapping< int, int >::InternalDataBase::support_point_values

The positions of the mapped (generalized) support points.

Definition at line 431 of file mapping.h.

template<int , int >

bool Mapping< int, int >::InternalDataBase::first_cell

private

The value returned by is_first_cell.

Definition at line 456 of file mapping.h.

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

• include/deal.II/fe/mapping.h