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

Vector coefficient defined as a product of a matrix coefficient and a vector coefficient. More...

#include <coefficient.hpp>

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

 MatrixVectorProductCoefficient (MatrixCoefficient &A, VectorCoefficient &B)
 Constructor with two coefficients. Result is A*B. More...
 
void SetTime (double t)
 Set the time for internally stored coefficients. More...
 
void SetACoef (MatrixCoefficient &A)
 Reset the matrix coefficient. More...
 
MatrixCoefficientGetACoef () const
 Return the matrix coefficient. More...
 
void SetBCoef (VectorCoefficient &B)
 Reset the vector coefficient. More...
 
VectorCoefficientGetBCoef () const
 Return the vector coefficient. More...
 
virtual void Eval (Vector &V, ElementTransformation &T, const IntegrationPoint &ip)
 Evaluate the vector coefficient at ip. More...
 
virtual void Eval (Vector &V, ElementTransformation &T, const IntegrationPoint &ip)=0
 Evaluate the vector coefficient in the element described by T at the point ip, storing the result in V. More...
 
virtual void Eval (DenseMatrix &M, ElementTransformation &T, const IntegrationRule &ir)
 Evaluate the vector coefficient in the element described by T at all points of ir, storing the result in M. More...
 
- Public Member Functions inherited from mfem::VectorCoefficient
 VectorCoefficient (int vd)
 Initialize the VectorCoefficient with vector dimension vd. More...
 
double GetTime ()
 Get the time for time dependent coefficients. More...
 
int GetVDim ()
 Returns dimension of the vector. More...
 
virtual void Eval (DenseMatrix &M, ElementTransformation &T, const IntegrationRule &ir)
 Evaluate the vector coefficient in the element described by T at all points of ir, storing the result in M. More...
 
virtual void Project (QuadratureFunction &qf)
 Fill the QuadratureFunction qf by evaluating the coefficient at the quadrature points. More...
 
virtual ~VectorCoefficient ()
 

Additional Inherited Members

- Protected Attributes inherited from mfem::VectorCoefficient
int vdim
 
double time
 

Detailed Description

Vector coefficient defined as a product of a matrix coefficient and a vector coefficient.

Definition at line 1817 of file coefficient.hpp.

Constructor & Destructor Documentation

◆ MatrixVectorProductCoefficient()

mfem::MatrixVectorProductCoefficient::MatrixVectorProductCoefficient ( MatrixCoefficient A,
VectorCoefficient B 
)

Constructor with two coefficients. Result is A*B.

Definition at line 1129 of file coefficient.cpp.

Member Function Documentation

◆ Eval() [1/3]

void mfem::MatrixVectorProductCoefficient::Eval ( Vector V,
ElementTransformation T,
const IntegrationPoint ip 
)
virtual

Evaluate the vector coefficient at ip.

Implements mfem::VectorCoefficient.

Definition at line 1146 of file coefficient.cpp.

◆ Eval() [2/3]

void mfem::VectorCoefficient::Eval

Evaluate the vector coefficient in the element described by T at all points of ir, storing the result in M.

The dimensions of M are GetVDim() by ir.GetNPoints() and they must be set by the implementation of this method.

The general implementation provided by the base class (using the Eval method for one IntegrationPoint at a time) can be overloaded for more efficient implementation.

Note
The IntegrationPoint associated with T is not used, and this method will generally modify this IntegrationPoint associated with T.

Definition at line 222 of file coefficient.cpp.

◆ Eval() [3/3]

virtual void mfem::VectorCoefficient::Eval

Evaluate the vector coefficient in the element described by T at the point ip, storing the result in V.

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).

◆ GetACoef()

MatrixCoefficient* mfem::MatrixVectorProductCoefficient::GetACoef ( ) const
inline

Return the matrix coefficient.

Definition at line 1836 of file coefficient.hpp.

◆ GetBCoef()

VectorCoefficient* mfem::MatrixVectorProductCoefficient::GetBCoef ( ) const
inline

Return the vector coefficient.

Definition at line 1841 of file coefficient.hpp.

◆ SetACoef()

void mfem::MatrixVectorProductCoefficient::SetACoef ( MatrixCoefficient A)
inline

Reset the matrix coefficient.

Definition at line 1834 of file coefficient.hpp.

◆ SetBCoef()

void mfem::MatrixVectorProductCoefficient::SetBCoef ( VectorCoefficient B)
inline

Reset the vector coefficient.

Definition at line 1839 of file coefficient.hpp.

◆ SetTime()

void mfem::MatrixVectorProductCoefficient::SetTime ( double  t)
virtual

Set the time for internally stored coefficients.

Reimplemented from mfem::VectorCoefficient.

Definition at line 1139 of file coefficient.cpp.


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