mfem::CrossCrossCoefficient Class Reference

Matrix coefficient defined as -a k x k x, for a vector k and scalar a. More...

#include <coefficient.hpp>

Inheritance diagram for mfem::CrossCrossCoefficient:

Collaboration diagram for mfem::CrossCrossCoefficient:

Public Member Functions
	CrossCrossCoefficient (double A, VectorCoefficient &K)
	CrossCrossCoefficient (Coefficient &A, VectorCoefficient &K)
void	SetAConst (double A)
	Reset the scalar factor as a constant. More...
double	GetAConst () const
	Return the scalar factor. More...
void	SetACoef (Coefficient &A)
	Reset the scalar factor. More...
Coefficient *	GetACoef () const
	Return the scalar factor. More...
void	SetKCoef (VectorCoefficient &K)
	Reset the vector factor. More...
VectorCoefficient *	GetKCoef () const
	Return the vector factor. More...
virtual void	Eval (DenseMatrix &M, ElementTransformation &T, const IntegrationPoint &ip)
	Evaluate the matrix coefficient at ip. More...
Public Member Functions inherited from mfem::MatrixCoefficient
	MatrixCoefficient (int dim, bool symm=false)
	Construct a dim x dim matrix coefficient. More...
	MatrixCoefficient (int h, int w, bool symm=false)
	Construct a h x w matrix coefficient. More...
void	SetTime (double t)
	Set the time for time dependent coefficients. More...
double	GetTime ()
	Get the time for time dependent coefficients. More...
int	GetHeight () const
	Get the height of the matrix. More...
int	GetWidth () const
	Get the width of the matrix. More...
int	GetVDim () const
	For backward compatibility get the width of the matrix. More...
bool	IsSymmetric () const
virtual void	EvalSymmetric (Vector &K, ElementTransformation &T, const IntegrationPoint &ip)
	Evaluate the upper triangular entries of the matrix coefficient in the symmetric case, similarly to Eval. Matrix entry (i,j) is stored in K[j - i + os_i] for 0 <= i <= j < width, os_0 = 0, os_{i+1} = os_i + width - i. That is, K = {M(0,0), ..., M(0,w-1), M(1,1), ..., M(1,w-1), ..., M(w-1,w-1) with w = width. More...
virtual	~MatrixCoefficient ()

Additional Inherited Members
Protected Attributes inherited from mfem::MatrixCoefficient
int	height
int	width
double	time
bool	symmetric

Detailed Description

Matrix coefficient defined as -a k x k x, for a vector k and scalar a.

This coefficient returns \(a * (|k|^2 I - k \otimes k)\), where I is the identity matrix and \(\otimes\) indicates the outer product. This can be evaluated for vectors of any dimension but in three dimensions it corresponds to computing the cross product with k twice.

Definition at line 1522 of file coefficient.hpp.

Constructor & Destructor Documentation

mfem::CrossCrossCoefficient::CrossCrossCoefficient	(	double	A,
		VectorCoefficient &	K
	)

mfem::CrossCrossCoefficient::CrossCrossCoefficient	(	Coefficient &	A,
		VectorCoefficient &	K
	)

Definition at line 700 of file coefficient.cpp.

Member Function Documentation

void mfem::CrossCrossCoefficient::Eval ( DenseMatrix &  M, ElementTransformation &  T, const IntegrationPoint &  ip  )

virtual

Evaluate the matrix coefficient at ip.

Implements mfem::MatrixCoefficient.

Definition at line 706 of file coefficient.cpp.

Coefficient* mfem::CrossCrossCoefficient::GetACoef ( ) const

inline

Return the scalar factor.

Definition at line 1543 of file coefficient.hpp.

double mfem::CrossCrossCoefficient::GetAConst ( ) const

inline

Return the scalar factor.

Definition at line 1538 of file coefficient.hpp.

VectorCoefficient* mfem::CrossCrossCoefficient::GetKCoef ( ) const

inline

Return the vector factor.

Definition at line 1548 of file coefficient.hpp.

void mfem::CrossCrossCoefficient::SetACoef ( Coefficient &  A )

inline

Reset the scalar factor.

Definition at line 1541 of file coefficient.hpp.

void mfem::CrossCrossCoefficient::SetAConst ( double  A )

inline

Reset the scalar factor as a constant.

Definition at line 1536 of file coefficient.hpp.

void mfem::CrossCrossCoefficient::SetKCoef ( VectorCoefficient &  K )

inline

Reset the vector factor.

Definition at line 1546 of file coefficient.hpp.

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

• fem/coefficient.hpp
• fem/coefficient.cpp