MFEM  v4.5.2
Finite element discretization library
Public Member Functions | List of all members
mfem::SymmetricMatrixConstantCoefficient Class Reference

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

#include <coefficient.hpp>

Inheritance diagram for mfem::SymmetricMatrixConstantCoefficient:
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Collaboration diagram for mfem::SymmetricMatrixConstantCoefficient:
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Public Member Functions

 SymmetricMatrixConstantCoefficient (const DenseSymmetricMatrix &m)
 Construct using matrix m for the constant. More...
 
virtual void Eval (DenseSymmetricMatrix &M, ElementTransformation &T, const IntegrationPoint &ip)
 Evaluate the matrix coefficient at ip. More...
 
virtual void Eval (DenseSymmetricMatrix &K, ElementTransformation &T, const IntegrationPoint &ip)=0
 Evaluate the matrix coefficient in the element described by T at the point ip, storing the result as a symmetric matrix K. More...
 
virtual void Eval (DenseMatrix &K, ElementTransformation &T, const IntegrationPoint &ip)
 Evaluate the matrix coefficient in the element described by T at the point ip, storing the result as a dense matrix K. More...
 
- Public Member Functions inherited from mfem::SymmetricMatrixCoefficient
 SymmetricMatrixCoefficient (int dimension)
 Construct a dim x dim matrix coefficient. More...
 
int GetSize () const
 Get the size of the matrix. More...
 
virtual void ProjectSymmetric (QuadratureFunction &qf)
 Fill the QuadratureFunction qf by evaluating the coefficient at the quadrature points. More...
 
virtual void Eval (DenseMatrix &K, ElementTransformation &T, const IntegrationPoint &ip)
 Evaluate the matrix coefficient in the element described by T at the point ip, storing the result as a dense matrix K. More...
 
const DenseSymmetricMatrixGetMatrix ()
 Return a reference to the constant matrix. More...
 
virtual ~SymmetricMatrixCoefficient ()
 
- 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 ()
 

Additional Inherited Members

- Protected Attributes inherited from mfem::SymmetricMatrixCoefficient
DenseSymmetricMatrix mat
 Internal matrix used when evaluating this coefficient as a DenseMatrix. More...
 
- 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 1341 of file coefficient.hpp.

Constructor & Destructor Documentation

◆ SymmetricMatrixConstantCoefficient()

mfem::SymmetricMatrixConstantCoefficient::SymmetricMatrixConstantCoefficient ( const DenseSymmetricMatrix m)
inline

Construct using matrix m for the constant.

Definition at line 1348 of file coefficient.hpp.

Member Function Documentation

◆ Eval() [1/3]

virtual void mfem::SymmetricMatrixCoefficient::Eval

Evaluate the matrix coefficient in the element described by T at the point ip, storing the result as a symmetric matrix 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() [2/3]

void mfem::SymmetricMatrixCoefficient::Eval

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

This function allows the use of SymmetricMatrixCoefficient in situations where the symmetry is not taken advantage of.

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).

Definition at line 778 of file coefficient.cpp.

◆ Eval() [3/3]

virtual void mfem::SymmetricMatrixConstantCoefficient::Eval ( DenseSymmetricMatrix M,
ElementTransformation T,
const IntegrationPoint ip 
)
inlinevirtual

Evaluate the matrix coefficient at ip.

Implements mfem::SymmetricMatrixCoefficient.

Definition at line 1352 of file coefficient.hpp.


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