MFEM  v4.5.2 Finite element discretization library
mfem::MatrixConstantCoefficient Class Reference

A matrix coefficient that is constant in space and time. More...

#include <coefficient.hpp>

Inheritance diagram for mfem::MatrixConstantCoefficient:
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Collaboration diagram for mfem::MatrixConstantCoefficient:
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## Public Member Functions

MatrixConstantCoefficient (const DenseMatrix &m)
Construct using matrix m for the constant. More...

virtual void Eval (DenseMatrix &M, ElementTransformation &T, const IntegrationPoint &ip)
Evaluate the matrix coefficient at ip. More...

const DenseMatrixGetMatrix ()
Return a reference to the constant matrix. More...

virtual void Eval (DenseMatrix &K, ElementTransformation &T, const IntegrationPoint &ip)=0
Evaluate the matrix coefficient in the element described by T at the point ip, storing the result in K. 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...

virtual 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 Project (QuadratureFunction &qf, bool transpose=false)
Fill the QuadratureFunction qf by evaluating the coefficient at the quadrature points. The matrix will be transposed or not according to the boolean argument transpose. More...

virtual void EvalSymmetric (Vector &K, ElementTransformation &T, const IntegrationPoint &ip)
(DEPRECATED) Evaluate a symmetric matrix coefficient. More...

virtual ~MatrixCoefficient ()

Protected Attributes inherited from mfem::MatrixCoefficient
int height

int width

double time

bool symmetric

## Detailed Description

A matrix coefficient that is constant in space and time.

Definition at line 972 of file coefficient.hpp.

## ◆ MatrixConstantCoefficient()

 mfem::MatrixConstantCoefficient::MatrixConstantCoefficient ( const DenseMatrix & m )
inline

Construct using matrix m for the constant.

Definition at line 978 of file coefficient.hpp.

## ◆ Eval() [1/2]

 virtual void mfem::MatrixCoefficient::Eval

Evaluate the matrix coefficient in the element described by T at the point ip, storing the result in K.

Note
When this method is called, the caller must make sure that the IntegrationPoint associated with T is the same as ip. This can be achieved by calling T.SetIntPoint(&ip).

## ◆ Eval() [2/2]

 virtual void mfem::MatrixConstantCoefficient::Eval ( DenseMatrix & M, ElementTransformation & T, const IntegrationPoint & ip )
inlinevirtual

Evaluate the matrix coefficient at ip.

Implements mfem::MatrixCoefficient.

Definition at line 982 of file coefficient.hpp.

## ◆ GetMatrix()

 const DenseMatrix& mfem::MatrixConstantCoefficient::GetMatrix ( )
inline

Return a reference to the constant matrix.

Definition at line 985 of file coefficient.hpp.

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