MFEM v4.7.0
Finite element discretization library
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mfem::TransformedCoefficient Class Reference

A coefficient that depends on 1 or 2 parent coefficients and a transformation rule represented by a C-function. More...

#include <coefficient.hpp>

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

 TransformedCoefficient (Coefficient *q, std::function< real_t(real_t)> F)
 
 TransformedCoefficient (Coefficient *q1, Coefficient *q2, std::function< real_t(real_t, real_t)> F)
 
void SetTime (real_t t)
 Set the time for internally stored coefficients.
 
virtual real_t Eval (ElementTransformation &T, const IntegrationPoint &ip)
 Evaluate the coefficient at ip.
 
- Public Member Functions inherited from mfem::Coefficient
 Coefficient ()
 
real_t GetTime ()
 Get the time for time dependent coefficients.
 
real_t Eval (ElementTransformation &T, const IntegrationPoint &ip, real_t t)
 Evaluate the coefficient in the element described by T at the point ip at time t.
 
virtual void Project (QuadratureFunction &qf)
 Fill the QuadratureFunction qf by evaluating the coefficient at the quadrature points.
 
virtual ~Coefficient ()
 

Additional Inherited Members

- Protected Attributes inherited from mfem::Coefficient
real_t time
 

Detailed Description

A coefficient that depends on 1 or 2 parent coefficients and a transformation rule represented by a C-function.

\( C(x,t) = T(Q1(x,t)) \) or \( C(x,t) = T(Q1(x,t), Q2(x,t)) \)

where T is the transformation rule, and Q1/Q2 are the parent coefficients.

Definition at line 420 of file coefficient.hpp.

Constructor & Destructor Documentation

◆ TransformedCoefficient() [1/2]

mfem::TransformedCoefficient::TransformedCoefficient ( Coefficient * q,
std::function< real_t(real_t)> F )
inline

Definition at line 429 of file coefficient.hpp.

◆ TransformedCoefficient() [2/2]

mfem::TransformedCoefficient::TransformedCoefficient ( Coefficient * q1,
Coefficient * q2,
std::function< real_t(real_t, real_t)> F )
inline

Definition at line 431 of file coefficient.hpp.

Member Function Documentation

◆ Eval()

real_t mfem::TransformedCoefficient::Eval ( ElementTransformation & T,
const IntegrationPoint & ip )
virtual

Evaluate the coefficient at ip.

Implements mfem::Coefficient.

Definition at line 218 of file coefficient.cpp.

◆ SetTime()

void mfem::TransformedCoefficient::SetTime ( real_t t)
virtual

Set the time for internally stored coefficients.

Reimplemented from mfem::Coefficient.

Definition at line 211 of file coefficient.cpp.


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