mfem::ND_DofTransformation Class Reference

#include <doftrans.hpp>

Inheritance diagram for mfem::ND_DofTransformation:

Collaboration diagram for mfem::ND_DofTransformation:

Public Member Functions
bool	IsIdentity () const override
	If the DofTransformation performs no transformation.
void	TransformPrimal (const Array< int > &Fo, real_t *v) const override
void	InvTransformPrimal (const Array< int > &Fo, real_t *v) const override
void	TransformDual (const Array< int > &Fo, real_t *v) const override
void	InvTransformDual (const Array< int > &Fo, real_t *v) const override
Public Member Functions inherited from mfem::StatelessDofTransformation
int	Size () const
int	Height () const
int	NumRows () const
int	Width () const
int	NumCols () const
void	TransformPrimal (const Array< int > &face_orientation, Vector &v) const
void	InvTransformPrimal (const Array< int > &face_orientation, Vector &v) const
void	TransformDual (const Array< int > &face_orientation, Vector &v) const
void	InvTransformDual (const Array< int > &face_orientation, Vector &v) const
virtual	~StatelessDofTransformation ()=default

Static Public Member Functions
static const DenseMatrix &	GetFaceTransform (int ori)
static const DenseMatrix &	GetFaceInverseTransform (int ori)

Protected Member Functions
	ND_DofTransformation (int size, int order, int num_edges, int num_faces, int *face_types)
Protected Member Functions inherited from mfem::StatelessDofTransformation
	StatelessDofTransformation (int size)

Protected Attributes
const int	order
const int	nedofs
const int	ntdofs
const int	nqdofs
const int	nedges
const int	nfaces
const int *	ftypes
Protected Attributes inherited from mfem::StatelessDofTransformation
int	size_

Detailed Description

Abstract base class for high-order Nedelec spaces on elements with triangular faces.

The Nedelec DoFs on the interior of triangular faces come in pairs which share an interpolation point but have different vector directions. These directions depend on the orientation of the face and can therefore differ in neighboring elements. The mapping required to transform these DoFs can be implemented as series of 2x2 linear transformations. The raw data for these linear transformations is stored in the T_data and TInv_data arrays and can be accessed as DenseMatrices using the GetFaceTransform() and GetFaceInverseTransform() methods.

Definition at line 303 of file doftrans.hpp.

Constructor & Destructor Documentation

ND_DofTransformation()

mfem::ND_DofTransformation::ND_DofTransformation ( int size, int order, int num_edges, int num_faces, int * face_types )

protected

Definition at line 195 of file doftrans.cpp.

Member Function Documentation

GetFaceInverseTransform()

static const DenseMatrix & mfem::ND_DofTransformation::GetFaceInverseTransform ( int ori )

inlinestatic

Definition at line 327 of file doftrans.hpp.

GetFaceTransform()

static const DenseMatrix & mfem::ND_DofTransformation::GetFaceTransform ( int ori )

inlinestatic

Definition at line 324 of file doftrans.hpp.

InvTransformDual()

void mfem::ND_DofTransformation::InvTransformDual ( const Array< int > & face_orientation, real_t * v ) const

overridevirtual

Inverse Transform dual DoFs

Implements mfem::StatelessDofTransformation.

Definition at line 314 of file doftrans.cpp.

InvTransformPrimal()

void mfem::ND_DofTransformation::InvTransformPrimal ( const Array< int > & face_orientation, real_t * v ) const

overridevirtual

Inverse transform local DoFs. Used to transform DoFs from a global vector back to their element-local form. For example, this must be used to transform the vector obtained using GridFunction::GetSubVector before it can be used to compute a local interpolation.

Implements mfem::StatelessDofTransformation.

Definition at line 244 of file doftrans.cpp.

IsIdentity()

bool mfem::ND_DofTransformation::IsIdentity ( ) const

inlineoverridevirtual

If the DofTransformation performs no transformation.

Implements mfem::StatelessDofTransformation.

Definition at line 330 of file doftrans.hpp.

TransformDual()

void mfem::ND_DofTransformation::TransformDual ( const Array< int > & face_orientation, real_t * v ) const

overridevirtual

Transform dual DoFs as computed by a LinearFormIntegrator before summing into a LinearForm object.

Implements mfem::StatelessDofTransformation.

Definition at line 279 of file doftrans.cpp.

TransformPrimal()

void mfem::ND_DofTransformation::TransformPrimal ( const Array< int > & face_orientation, real_t * v ) const

overridevirtual

Transform local DoFs to align with the global DoFs. For example, this transformation can be used to map the local vector computed by FiniteElement::Project() to the transformed vector stored within a GridFunction object.

Implements mfem::StatelessDofTransformation.

Definition at line 209 of file doftrans.cpp.

Member Data Documentation

ftypes

const int* mfem::ND_DofTransformation::ftypes

protected

Definition at line 317 of file doftrans.hpp.

nedges

const int mfem::ND_DofTransformation::nedges

protected

Definition at line 315 of file doftrans.hpp.

nedofs

const int mfem::ND_DofTransformation::nedofs

protected

Definition at line 312 of file doftrans.hpp.

nfaces

const int mfem::ND_DofTransformation::nfaces

protected

Definition at line 316 of file doftrans.hpp.

nqdofs

const int mfem::ND_DofTransformation::nqdofs

protected

Definition at line 314 of file doftrans.hpp.

ntdofs

const int mfem::ND_DofTransformation::ntdofs

protected

Definition at line 313 of file doftrans.hpp.

order

const int mfem::ND_DofTransformation::order

protected

Definition at line 311 of file doftrans.hpp.

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

• fem/doftrans.hpp
• fem/doftrans.cpp