mfem::ElementTransformation Class Reference

#include <eltrans.hpp>

Inheritance diagram for mfem::ElementTransformation:

Collaboration diagram for mfem::ElementTransformation:

Public Member Functions
	ElementTransformation ()
void	SetIntPoint (const IntegrationPoint *ip)
const IntegrationPoint &	GetIntPoint ()
virtual void	Transform (const IntegrationPoint &, Vector &)=0
virtual void	Transform (const IntegrationRule &, DenseMatrix &)=0
virtual void	Transform (const DenseMatrix &matrix, DenseMatrix &result)=0
	Transform columns of 'matrix', store result in 'result'. More...
const DenseMatrix &	Jacobian ()
	Return the Jacobian matrix of the transformation at the currently set IntegrationPoint, using the method SetIntPoint(). More...
double	Weight ()
const DenseMatrix &	AdjugateJacobian ()
const DenseMatrix &	InverseJacobian ()
virtual int	Order ()=0
virtual int	OrderJ ()=0
virtual int	OrderW ()=0
virtual int	OrderGrad (const FiniteElement *fe)=0
	Order of adj(J)^t.grad(fi) More...
Geometry::Type	GetGeometryType () const
	Return the Geometry::Type of the reference element. More...
int	GetDimension () const
	Return the dimension of the reference element. More...
int	GetSpaceDim () const
	Get the dimension of the target (physical) space. More...
virtual int	TransformBack (const Vector &pt, IntegrationPoint &ip)=0
	Transform a point pt from physical space to a point ip in reference space. More...
virtual	~ElementTransformation ()

Public Attributes
int	Attribute
int	ElementNo

Protected Types
enum	StateMasks { JACOBIAN_MASK = 1, WEIGHT_MASK = 2, ADJUGATE_MASK = 4, INVERSE_MASK = 8 }

Protected Member Functions
virtual const DenseMatrix &	EvalJacobian ()=0
double	EvalWeight ()
const DenseMatrix &	EvalAdjugateJ ()
const DenseMatrix &	EvalInverseJ ()

Protected Attributes
const IntegrationPoint *	IntPoint
DenseMatrix	dFdx
DenseMatrix	adjJ
DenseMatrix	invJ
double	Wght
int	EvalState
Geometry::Type	geom
int	space_dim

Detailed Description

Definition at line 23 of file eltrans.hpp.

Member Enumeration Documentation

enum mfem::ElementTransformation::StateMasks

protected

Enumerator
JACOBIAN_MASK
WEIGHT_MASK
ADJUGATE_MASK
INVERSE_MASK

Definition at line 30 of file eltrans.hpp.

Constructor & Destructor Documentation

mfem::ElementTransformation::ElementTransformation

(

)

Definition at line 19 of file eltrans.cpp.

virtual mfem::ElementTransformation::~ElementTransformation ( )

inlinevirtual

Definition at line 104 of file eltrans.hpp.

Member Function Documentation

const DenseMatrix& mfem::ElementTransformation::AdjugateJacobian ( )

inline

Definition at line 73 of file eltrans.hpp.

const DenseMatrix & mfem::ElementTransformation::EvalAdjugateJ ( )

protected

Definition at line 34 of file eltrans.cpp.

const DenseMatrix & mfem::ElementTransformation::EvalInverseJ ( )

protected

Definition at line 44 of file eltrans.cpp.

virtual const DenseMatrix& mfem::ElementTransformation::EvalJacobian ( )

protectedpure virtual

double mfem::ElementTransformation::EvalWeight ( )

protected

Definition at line 26 of file eltrans.cpp.

int mfem::ElementTransformation::GetDimension ( ) const

inline

Return the dimension of the reference element.

Definition at line 89 of file eltrans.hpp.

Geometry::Type mfem::ElementTransformation::GetGeometryType ( ) const

inline

Return the Geometry::Type of the reference element.

Definition at line 86 of file eltrans.hpp.

const IntegrationPoint& mfem::ElementTransformation::GetIntPoint ( )

inline

Definition at line 55 of file eltrans.hpp.

int mfem::ElementTransformation::GetSpaceDim ( ) const

inline

Get the dimension of the target (physical) space.

We support 2D meshes embedded in 3D; in this case the function will return "3".

Definition at line 94 of file eltrans.hpp.

const DenseMatrix& mfem::ElementTransformation::InverseJacobian ( )

inline

Definition at line 76 of file eltrans.hpp.

const DenseMatrix& mfem::ElementTransformation::Jacobian ( )

inline

Return the Jacobian matrix of the transformation at the currently set IntegrationPoint, using the method SetIntPoint().

The dimensions of the Jacobian matrix are physical-space-dim by reference-space-dim. The first column contains the x derivatives of the transformation, the second – the y derivatives, etc.

Definition at line 68 of file eltrans.hpp.

virtual int mfem::ElementTransformation::Order ( )

pure virtual

Implemented in mfem::IsoparametricTransformation.

virtual int mfem::ElementTransformation::OrderGrad ( const FiniteElement *  fe )

pure virtual

Order of adj(J)^t.grad(fi)

Implemented in mfem::IsoparametricTransformation.

virtual int mfem::ElementTransformation::OrderJ ( )

pure virtual

Implemented in mfem::IsoparametricTransformation.

virtual int mfem::ElementTransformation::OrderW ( )

pure virtual

Implemented in mfem::IsoparametricTransformation.

void mfem::ElementTransformation::SetIntPoint ( const IntegrationPoint *  ip )

inline

Definition at line 53 of file eltrans.hpp.

virtual void mfem::ElementTransformation::Transform ( const IntegrationPoint &  , Vector &    )

pure virtual

Implemented in mfem::IsoparametricTransformation.

virtual void mfem::ElementTransformation::Transform ( const IntegrationRule &  , DenseMatrix &    )

pure virtual

Implemented in mfem::IsoparametricTransformation.

virtual void mfem::ElementTransformation::Transform ( const DenseMatrix &  matrix, DenseMatrix &  result  )

pure virtual

Transform columns of 'matrix', store result in 'result'.

Implemented in mfem::IsoparametricTransformation.

virtual int mfem::ElementTransformation::TransformBack ( const Vector &  pt, IntegrationPoint &  ip  )

pure virtual

Transform a point pt from physical space to a point ip in reference space.

Attempt to find the IntegrationPoint that is transformed into the given point in physical space. If the inversion fails a non-zero value is returned. This method is not 100 percent reliable for non-linear transformations.

Implemented in mfem::IsoparametricTransformation.

double mfem::ElementTransformation::Weight ( )

inline

Definition at line 71 of file eltrans.hpp.

Member Data Documentation

DenseMatrix mfem::ElementTransformation::adjJ

protected

Definition at line 27 of file eltrans.hpp.

int mfem::ElementTransformation::Attribute

Definition at line 49 of file eltrans.hpp.

DenseMatrix mfem::ElementTransformation::dFdx

protected

Definition at line 27 of file eltrans.hpp.

int mfem::ElementTransformation::ElementNo

Definition at line 49 of file eltrans.hpp.

int mfem::ElementTransformation::EvalState

protected

Definition at line 29 of file eltrans.hpp.

Geometry::Type mfem::ElementTransformation::geom

protected

Definition at line 37 of file eltrans.hpp.

const IntegrationPoint* mfem::ElementTransformation::IntPoint

protected

Definition at line 26 of file eltrans.hpp.

DenseMatrix mfem::ElementTransformation::invJ

protected

Definition at line 27 of file eltrans.hpp.

int mfem::ElementTransformation::space_dim

protected

Definition at line 38 of file eltrans.hpp.

double mfem::ElementTransformation::Wght

protected

Definition at line 28 of file eltrans.hpp.

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

• fem/eltrans.hpp
• fem/eltrans.cpp