MFEM
v4.6.0
Finite element discretization library

Base class for symmetric matrix coefficients that optionally depend on time and space. More...
#include <coefficient.hpp>
Public Member Functions  
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 (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...  
const DenseSymmetricMatrix &  GetMatrix () 
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 () 
Protected Attributes  
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 
Base class for symmetric matrix coefficients that optionally depend on time and space.
Definition at line 1426 of file coefficient.hpp.

inlineexplicit 
Construct a dim x dim matrix coefficient.
Definition at line 1433 of file coefficient.hpp.

inlinevirtual 
Definition at line 1470 of file coefficient.hpp.

pure virtual 
Evaluate the matrix coefficient in the element described by T at the point ip, storing the result as a symmetric matrix K.
Implemented in mfem::SymmetricMatrixFunctionCoefficient, and mfem::SymmetricMatrixConstantCoefficient.

virtual 
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.
Implements mfem::MatrixCoefficient.
Definition at line 828 of file coefficient.cpp.

inline 
Return a reference to the constant matrix.
Definition at line 1468 of file coefficient.hpp.

inline 
Get the size of the matrix.
Definition at line 1437 of file coefficient.hpp.

virtual 
Fill the QuadratureFunction qf by evaluating the coefficient at the quadrature points.
The vdim of the coefficient should be equal to height*(height+1)/2.
Definition at line 803 of file coefficient.cpp.

protected 
Internal matrix used when evaluating this coefficient as a DenseMatrix.
Definition at line 1430 of file coefficient.hpp.