MFEM  v4.0
Finite element discretization library
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mfem::MassIntegrator Class Reference

#include <bilininteg.hpp>

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

 MassIntegrator (const IntegrationRule *ir=NULL)
 
 MassIntegrator (Coefficient &q, const IntegrationRule *ir=NULL)
 Construct a mass integrator with coefficient q. More...
 
virtual void AssembleElementMatrix (const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
 
virtual void AssembleElementMatrix2 (const FiniteElement &trial_fe, const FiniteElement &test_fe, ElementTransformation &Trans, DenseMatrix &elmat)
 
virtual void AssemblePA (const FiniteElementSpace &)
 Method defining partial assembly. More...
 
virtual void AddMultPA (const Vector &, Vector &) const
 Method for partially assembled action. More...
 
- Public Member Functions inherited from mfem::BilinearFormIntegrator
virtual void AddMultTransposePA (const Vector &x, Vector &y) const
 Method for partially assembled transposed action. More...
 
virtual void AssembleFaceMatrix (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Trans, DenseMatrix &elmat)
 
virtual void AssembleFaceMatrix (const FiniteElement &trial_face_fe, const FiniteElement &test_fe1, const FiniteElement &test_fe2, FaceElementTransformations &Trans, DenseMatrix &elmat)
 
virtual void AssembleElementVector (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, Vector &elvect)
 Perform the local action of the BilinearFormIntegrator. More...
 
virtual void AssembleElementGrad (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, DenseMatrix &elmat)
 Assemble the local gradient matrix. More...
 
virtual void AssembleFaceGrad (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Tr, const Vector &elfun, DenseMatrix &elmat)
 Assemble the local action of the gradient of the NonlinearFormIntegrator resulting from a face integral term. More...
 
virtual void ComputeElementFlux (const FiniteElement &el, ElementTransformation &Trans, Vector &u, const FiniteElement &fluxelem, Vector &flux, int with_coef=1)
 Virtual method required for Zienkiewicz-Zhu type error estimators. More...
 
virtual double ComputeFluxEnergy (const FiniteElement &fluxelem, ElementTransformation &Trans, Vector &flux, Vector *d_energy=NULL)
 Virtual method required for Zienkiewicz-Zhu type error estimators. More...
 
virtual ~BilinearFormIntegrator ()
 
- Public Member Functions inherited from mfem::NonlinearFormIntegrator
void SetIntRule (const IntegrationRule *ir)
 Prescribe a fixed IntegrationRule to use (when ir != NULL) or let the integrator choose (when ir == NULL). More...
 
void SetIntegrationRule (const IntegrationRule &irule)
 Prescribe a fixed IntegrationRule to use. More...
 
virtual void AssembleFaceVector (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Tr, const Vector &elfun, Vector &elvect)
 Perform the local action of the NonlinearFormIntegrator resulting from a face integral term. More...
 
virtual double GetElementEnergy (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun)
 Compute the local energy. More...
 
virtual ~NonlinearFormIntegrator ()
 

Static Public Member Functions

static const IntegrationRule & GetRule (const FiniteElement &trial_fe, const FiniteElement &test_fe, ElementTransformation &Trans)
 

Protected Attributes

Vector shape
 
Vector te_shape
 
Coefficient * Q
 
Vector pa_data
 
const DofToQuad * maps
 Not owned. More...
 
const GeometricFactors * geom
 Not owned. More...
 
int dim
 
int ne
 
int nq
 
int dofs1D
 
int quad1D
 
- Protected Attributes inherited from mfem::NonlinearFormIntegrator
const IntegrationRule * IntRule
 

Additional Inherited Members

- Protected Member Functions inherited from mfem::BilinearFormIntegrator
 BilinearFormIntegrator (const IntegrationRule *ir=NULL)
 
- Protected Member Functions inherited from mfem::NonlinearFormIntegrator
 NonlinearFormIntegrator (const IntegrationRule *ir=NULL)
 

Detailed Description

Class for local mass matrix assembling a(u,v) := (Q u, v)

Definition at line 1729 of file bilininteg.hpp.

Constructor & Destructor Documentation

mfem::MassIntegrator::MassIntegrator ( const IntegrationRule *  ir = NULL)
inline

Definition at line 1743 of file bilininteg.hpp.

mfem::MassIntegrator::MassIntegrator ( Coefficient &  q,
const IntegrationRule *  ir = NULL 
)
inline

Construct a mass integrator with coefficient q.

Definition at line 1747 of file bilininteg.hpp.

Member Function Documentation

void mfem::MassIntegrator::AddMultPA ( const Vector &  x,
Vector &  y 
) const
virtual

Method for partially assembled action.

Perform the action of integrator on the input x and add the result to the output y. Both x and y are E-vectors, i.e. they represent the element-wise discontinuous version of the FE space.

This method can be called only after the method AssemblePA() has been called.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 817 of file bilininteg_mass.cpp.

void mfem::MassIntegrator::AssembleElementMatrix ( const FiniteElement &  el,
ElementTransformation &  Trans,
DenseMatrix &  elmat 
)
virtual

Given a particular Finite Element computes the element mass matrix elmat.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 696 of file bilininteg.cpp.

void mfem::MassIntegrator::AssembleElementMatrix2 ( const FiniteElement &  trial_fe,
const FiniteElement &  test_fe,
ElementTransformation &  Trans,
DenseMatrix &  elmat 
)
virtual

Compute the local matrix representation of a bilinear form a(u,v) defined on different trial (given by u) and test (given by v) spaces. The rows in the local matrix correspond to the test dofs and the columns – to the trial dofs.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 728 of file bilininteg.cpp.

void mfem::MassIntegrator::AssemblePA ( const FiniteElementSpace &  fes)
virtual

Method defining partial assembly.

The result of the partial assembly is stored internally so that it can be used later in the methods AddMultPA() and AddMultTransposePA().

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 24 of file bilininteg_mass.cpp.

const IntegrationRule & mfem::MassIntegrator::GetRule ( const FiniteElement &  trial_fe,
const FiniteElement &  test_fe,
ElementTransformation &  Trans 
)
static

Definition at line 766 of file bilininteg.cpp.

Member Data Documentation

int mfem::MassIntegrator::dim
protected

Definition at line 1740 of file bilininteg.hpp.

int mfem::MassIntegrator::dofs1D
protected

Definition at line 1740 of file bilininteg.hpp.

const GeometricFactors* mfem::MassIntegrator::geom
protected

Not owned.

Definition at line 1739 of file bilininteg.hpp.

const DofToQuad* mfem::MassIntegrator::maps
protected

Not owned.

Definition at line 1738 of file bilininteg.hpp.

int mfem::MassIntegrator::ne
protected

Definition at line 1740 of file bilininteg.hpp.

int mfem::MassIntegrator::nq
protected

Definition at line 1740 of file bilininteg.hpp.

Vector mfem::MassIntegrator::pa_data
protected

Definition at line 1737 of file bilininteg.hpp.

Coefficient* mfem::MassIntegrator::Q
protected

Definition at line 1735 of file bilininteg.hpp.

int mfem::MassIntegrator::quad1D
protected

Definition at line 1740 of file bilininteg.hpp.

Vector mfem::MassIntegrator::shape
protected

Definition at line 1733 of file bilininteg.hpp.

Vector mfem::MassIntegrator::te_shape
protected

Definition at line 1733 of file bilininteg.hpp.


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