MFEM  v4.2.0
Finite element discretization library
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mfem::MatrixRestrictedCoefficient Class Reference

Derived matrix coefficient that has the value of the parent matrix coefficient where it is active and is zero otherwise. More...

#include <coefficient.hpp>

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

 MatrixRestrictedCoefficient (MatrixCoefficient &mc, Array< int > &attr)
 Construct with a parent matrix coefficient and an array of zeros and ones representing the attributes for which this coefficient should be active. More...
 
virtual void Eval (DenseMatrix &K, 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

Derived matrix coefficient that has the value of the parent matrix coefficient where it is active and is zero otherwise.

Definition at line 865 of file coefficient.hpp.

Constructor & Destructor Documentation

mfem::MatrixRestrictedCoefficient::MatrixRestrictedCoefficient ( MatrixCoefficient mc,
Array< int > &  attr 
)
inline

Construct with a parent matrix coefficient and an array of zeros and ones representing the attributes for which this coefficient should be active.

Definition at line 875 of file coefficient.hpp.

Member Function Documentation

void mfem::MatrixRestrictedCoefficient::Eval ( DenseMatrix K,
ElementTransformation T,
const IntegrationPoint ip 
)
virtual

Evaluate the matrix coefficient at ip.

Implements mfem::MatrixCoefficient.

Definition at line 413 of file coefficient.cpp.


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