Calculates finite element data on the actual cell. More...

#include <fe_values.hh>

Inheritance diagram for FEValues< dim, spacedim >:

Collaboration diagram for FEValues< dim, spacedim >:

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Public Member Functions
	FEValues (Mapping< dim, spacedim > &_mapping, Quadrature< dim > &_quadrature, FiniteElement< dim > &_fe, UpdateFlags _flags)
	Constructor. More...

void	reinit (ElementAccessor< 3 > &cell)
	Update cell-dependent data (gradients, Jacobians etc.) More...

const Quadrature< dim > *	get_quadrature () const override
	Returns the quadrature in use. More...

Public Member Functions inherited from FEValuesBase< dim, spacedim >
	FEValuesBase ()
	Default constructor. More...

virtual	~FEValuesBase ()

void	allocate (Mapping< dim, spacedim > &_mapping, unsigned int n_points, FiniteElement< dim > &_fe, UpdateFlags flags)
	Allocates space for computed data. More...

UpdateFlags	update_each (UpdateFlags flags)
	Determine quantities to be recomputed on each cell. More...

double	shape_value (const unsigned int function_no, const unsigned int point_no) override
	Return the value of the `function_no-th` shape function at the `point_no-th` quadrature point. More...

arma::vec::fixed< spacedim >	shape_grad (const unsigned int function_no, const unsigned int point_no) override
	Return the gradient of the `function_no-th` shape function at the `point_no-th` quadrature point. More...

double	shape_value_component (const unsigned int function_no, const unsigned int point_no, const unsigned int comp) const
	Return the value of the `function_no-th` shape function at the `point_no-th` quadrature point. More...

arma::vec::fixed< spacedim >	shape_grad_component (const unsigned int function_no, const unsigned int point_no, const unsigned int comp) const
	Return the gradient of the `function_no-th` shape function at the `point_no-th` quadrature point. More...

double	determinant (const unsigned int point_no)
	Return the relative volume change of the cell (Jacobian determinant). More...

double	JxW (const unsigned int point_no) override
	Return the product of Jacobian determinant and the quadrature weight at given quadrature point. More...

arma::vec::fixed< spacedim >	point (const unsigned int point_no)
	Return coordinates of the quadrature point in the actual cell system. More...

vector< arma::vec::fixed< spacedim > > &	point_list ()
	Return coordinates of all quadrature points in the actual cell system. More...

arma::vec::fixed< spacedim >	normal_vector (unsigned int point_no) override
	Returns the normal vector to a side at given quadrature point. More...

const FEValuesViews::Scalar< dim, spacedim > &	scalar_view (unsigned int i) const
	Accessor to scalar values of multicomponent FE. More...

const FEValuesViews::Vector< dim, spacedim > &	vector_view (unsigned int i) const
	Accessor to vector values of multicomponent FE. More...

const FEValuesViews::Tensor< dim, spacedim > &	tensor_view (unsigned int i) const
	Accessor to tensor values of multicomponent FE. More...

unsigned int	n_points ()
	Returns the number of quadrature points. More...

unsigned int	n_dofs () override
	Returns the number of shape functions. More...

FiniteElement< dim > *	get_fe () const
	Returns the finite element in use. More...

Mapping< dim, spacedim > *	get_mapping () const
	Returns the mapping in use. More...

Public Member Functions inherited from FEValuesSpaceBase< spacedim >
virtual	~FEValuesSpaceBase ()

Private Attributes
Quadrature< dim > *	quadrature
	The quadrature rule used to calculate integrals. More...

Additional Inherited Members
Protected Member Functions inherited from FEValuesBase< dim, spacedim >
FEInternalData *	init_fe_data (const Quadrature< dim > *q)
	Precompute finite element data on reference element. More...

void	fill_data (const FEInternalData &fe_data)
	Computes the shape function values and gradients on the actual cell and fills the FEValues structure. More...

void	fill_scalar_data (const FEInternalData &fe_data)
	Compute shape functions and gradients on the actual cell for scalar FE. More...

void	fill_vec_data (const FEInternalData &fe_data)
	Compute shape functions and gradients on the actual cell for vectorial FE. More...

void	fill_vec_contravariant_data (const FEInternalData &fe_data)
	Compute shape functions and gradients on the actual cell for vectorial FE. More...

void	fill_vec_piola_data (const FEInternalData &fe_data)
	Compute shape functions and gradients on the actual cell for Raviart-Thomas FE. More...

void	fill_tensor_data (const FEInternalData &fe_data)
	Compute shape functions and gradients on the actual cell for tensorial FE. More...

void	fill_system_data (const FEInternalData &fe_data)
	Compute shape functions and gradients on the actual cell for mixed system of FE. More...

Protected Attributes inherited from FEValuesBase< dim, spacedim >
Mapping< dim, spacedim > *	mapping
	The mapping from the reference cell to the actual cell. More...

unsigned int	n_points_
	Number of integration points. More...

FiniteElement< dim > *	fe
	The used finite element. More...

MappingInternalData *	mapping_data
	Precomputed mapping data. More...

FEInternalData *	fe_data
	Precomputed finite element data. More...

FEValuesData< dim, spacedim >	data
	Data computed by the mapping and finite element. More...

std::vector< std::shared_ptr< FEValuesBase< dim, spacedim > > >	fe_values_vec
	Vector of FEValues for sub-elements of FESystem. More...

unsigned int	n_components_
	Number of components of the FE. More...

ViewsCache	views_cache_
	Auxiliary storage of FEValuesViews accessors. More...

Detailed Description

template<unsigned int dim, unsigned int spacedim>
class FEValues< dim, spacedim >

Calculates finite element data on the actual cell.

FEValues takes care of the calculation of finite element data on the actual cell such as values of shape functions at quadrature points, gradients of shape functions, Jacobians of the mapping from the reference cell etc.

Parameters

dim	Dimension of the reference cell.
spacedim	Dimension of the Euclidean space where the actual cell lives.

Definition at line 525 of file fe_values.hh.

Constructor & Destructor Documentation

template<unsigned int dim, unsigned int spacedim>

FEValues< dim, spacedim >::FEValues	(	Mapping< dim, spacedim > &	_mapping,
		Quadrature< dim > &	_quadrature,
		FiniteElement< dim > &	_fe,
		UpdateFlags	_flags
	)

Constructor.

Initializes structures and calculates cell-independent data.

Parameters

_mapping	The mapping between the reference and actual cell.
_quadrature	The quadrature rule.
_fe	The finite element.
_flags	The update flags.

Definition at line 512 of file fe_values.cc.

Member Function Documentation

template<unsigned int dim, unsigned int spacedim>

const Quadrature<dim>* FEValues< dim, spacedim >::get_quadrature ( ) const

inlineoverridevirtual

Returns the quadrature in use.

Implements FEValuesBase< dim, spacedim >.

Definition at line 552 of file fe_values.hh.

template<unsigned int dim, unsigned int spacedim>

void FEValues< dim, spacedim >::reinit ( ElementAccessor< 3 > & cell )

Update cell-dependent data (gradients, Jacobians etc.)

Parameters

cell	The actual cell.

Definition at line 539 of file fe_values.cc.

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Member Data Documentation

template<unsigned int dim, unsigned int spacedim>

Quadrature<dim>* FEValues< dim, spacedim >::quadrature

private

The quadrature rule used to calculate integrals.

Definition at line 562 of file fe_values.hh.

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

/opt/flow123d/flow123d/src/fem/fe_values.hh
/opt/flow123d/flow123d/src/fem/fe_values.cc

Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

template<unsigned int dim, unsigned int spacedim> class FEValues< dim, spacedim >

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<unsigned int dim, unsigned int spacedim>
class FEValues< dim, spacedim >