mfem::DomainLFIntegrator Class Reference

Class for domain integration \( L(v) := (f, v) \). More...

#include <lininteg.hpp>

Inheritance diagram for mfem::DomainLFIntegrator:

Collaboration diagram for mfem::DomainLFIntegrator:

Classes
struct	Kernels

Public Types
using	AssembleKernelType
	args: vdim, ne, d1d, q1d, map_type, markers, B, detJ, W, coeff, y

Public Member Functions
	DomainLFIntegrator (Coefficient &QF, int a=2, int b=0)
	DomainLFIntegrator (Coefficient &QF, const IntegrationRule *ir)
	Constructs a domain integrator with a given Coefficient.
bool	SupportsDevice () const override
	Method probing for assembly on device.
void	AssembleDevice (const FiniteElementSpace &fes, const Array< int > &markers, Vector &b) override
	Method defining assembly on device.
void	AssembleRHSElementVect (const FiniteElement &el, ElementTransformation &Tr, Vector &elvect) override
void	AssembleDeltaElementVect (const FiniteElement &fe, ElementTransformation &Trans, Vector &elvect) override
	Assemble the delta coefficient at the IntegrationPoint set in Trans which is assumed to map to the delta coefficient center.
	MFEM_REGISTER_KERNELS (AssembleKernels, AssembleKernelType,(int, int, int))
	parameters: use DIM, T_D1D, T_Q1D
virtual void	AssembleRHSElementVect (const FiniteElement &el, FaceElementTransformations &Tr, Vector &elvect)
virtual void	AssembleRHSElementVect (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Tr, Vector &elvect)
Public Member Functions inherited from mfem::DeltaLFIntegrator
bool	IsDelta () const
	Returns true if the derived class instance uses a delta coefficient.
void	GetDeltaCenter (Vector &center)
	Returns the center of the delta coefficient.
Public Member Functions inherited from mfem::LinearFormIntegrator
virtual	~LinearFormIntegrator ()
Public Member Functions inherited from mfem::Integrator
	Integrator (const IntegrationRule *ir=NULL)
	Create a new Integrator, optionally providing a prescribed quadrature rule to use in assembly.
virtual void	SetIntRule (const IntegrationRule *ir)
	Prescribe a fixed IntegrationRule to use, or set to null to let the integrator choose an appropriate rule.
void	SetIntegrationRule (const IntegrationRule &ir)
	Prescribe a fixed IntegrationRule to use. Sets the NURBS patch integration rule to null.
void	SetNURBSPatchIntRule (NURBSMeshRules *pr)
	Sets an integration rule for use on NURBS patches.
bool	HasNURBSPatchIntRule () const
	Check if a NURBS patch integration rule has been set.
const IntegrationRule *	GetIntRule () const
	Directly return the IntRule pointer (possibly null) without checking for NURBS patch rules or falling back on a default.
const IntegrationRule *	GetIntegrationRule () const
	Equivalent to GetIntRule, but retained for backward compatibility with applications.

Static Public Member Functions
template<int DIM, int D1D, int Q1D>
static void	AddSpecialization ()

Additional Inherited Members
Protected Member Functions inherited from mfem::DeltaLFIntegrator
	DeltaLFIntegrator (Coefficient &q, const IntegrationRule *ir=NULL)
	This constructor should be used by derived classes that use a scalar DeltaCoefficient.
	DeltaLFIntegrator (VectorCoefficient &vq, const IntegrationRule *ir=NULL)
	This constructor should be used by derived classes that use a VectorDeltaCoefficient.
Protected Member Functions inherited from mfem::LinearFormIntegrator
	LinearFormIntegrator (const IntegrationRule *ir=NULL)
Protected Member Functions inherited from mfem::Integrator
const IntegrationRule *	GetIntegrationRule (const FiniteElement &trial_fe, const FiniteElement &test_fe, const ElementTransformation &trans) const
	Returns an integration rule based on the arguments and internal state of the Integrator object.
const IntegrationRule *	GetIntegrationRule (const FiniteElement &el, const ElementTransformation &trans) const
	Returns an integration rule based on the arguments and internal state. (Version for identical trial_fe and test_fe)
virtual const IntegrationRule *	GetDefaultIntegrationRule (const FiniteElement &trial_fe, const FiniteElement &test_fe, const ElementTransformation &trans) const
	Subclasses should override to choose a default integration rule.
Protected Attributes inherited from mfem::DeltaLFIntegrator
DeltaCoefficient *	delta
VectorDeltaCoefficient *	vec_delta
Protected Attributes inherited from mfem::Integrator
const IntegrationRule *	IntRule
NURBSMeshRules *	patchRules = nullptr

Detailed Description

Class for domain integration \( L(v) := (f, v) \).

Definition at line 107 of file lininteg.hpp.

Member Typedef Documentation

AssembleKernelType

using mfem::DomainLFIntegrator::AssembleKernelType

Initial value:

 void (*)(const int, const int, const int,
                                       const int, const int, const int *,
                                       const real_t *, const real_t *,
                                       const real_t *, const Vector &coeff,
                                       real_t *y)

args: vdim, ne, d1d, q1d, map_type, markers, B, detJ, W, coeff, y

Definition at line 141 of file lininteg.hpp.

Constructor & Destructor Documentation

DomainLFIntegrator() [1/2]

mfem::DomainLFIntegrator::DomainLFIntegrator	(	Coefficient &	QF,
		int	a = 2,
		int	b = 0 )

Constructs a domain integrator with a given Coefficient the old default was a = 1, b = 1 for simple elliptic problems a = 2, b = -2 is OK

Definition at line 38 of file lininteg.cpp.

DomainLFIntegrator() [2/2]

mfem::DomainLFIntegrator::DomainLFIntegrator	(	Coefficient &	QF,
		const IntegrationRule *	ir )

Constructs a domain integrator with a given Coefficient.

Definition at line 44 of file lininteg.cpp.

Member Function Documentation

AddSpecialization()

template<int DIM, int D1D, int Q1D>

static void mfem::DomainLFIntegrator::AddSpecialization ( )

inlinestatic

Definition at line 151 of file lininteg.hpp.

AssembleDeltaElementVect()

void mfem::DomainLFIntegrator::AssembleDeltaElementVect ( const FiniteElement & fe, ElementTransformation & Trans, Vector & elvect )

overridevirtual

Assemble the delta coefficient at the IntegrationPoint set in Trans which is assumed to map to the delta coefficient center.

Note

This method should be called for one mesh element only, including in parallel, even when the center of the delta coefficient is shared by multiple elements.

Implements mfem::DeltaLFIntegrator.

Definition at line 83 of file lininteg.cpp.

AssembleDevice()

void mfem::DomainLFIntegrator::AssembleDevice ( const FiniteElementSpace & fes, const Array< int > & markers, Vector & b )

overridevirtual

Method defining assembly on device.

Reimplemented from mfem::LinearFormIntegrator.

AssembleRHSElementVect() [1/3]

void mfem::DomainLFIntegrator::AssembleRHSElementVect ( const FiniteElement & el, ElementTransformation & Tr, Vector & elvect )

overridevirtual

Given a particular Finite Element and a transformation (Tr) computes the element right hand side element vector, elvect.

Implements mfem::LinearFormIntegrator.

Definition at line 51 of file lininteg.cpp.

AssembleRHSElementVect() [2/3]

void mfem::LinearFormIntegrator::AssembleRHSElementVect ( const FiniteElement & el, FaceElementTransformations & Tr, Vector & elvect )

virtual

Reimplemented from mfem::LinearFormIntegrator.

Definition at line 48 of file lininteg.cpp.

AssembleRHSElementVect() [3/3]

void mfem::LinearFormIntegrator::AssembleRHSElementVect ( const FiniteElement & el1, const FiniteElement & el2, FaceElementTransformations & Tr, Vector & elvect )

virtual

Reimplemented from mfem::LinearFormIntegrator.

Definition at line 51 of file lininteg.cpp.

MFEM_REGISTER_KERNELS()

mfem::DomainLFIntegrator::MFEM_REGISTER_KERNELS	(	AssembleKernels	,
		AssembleKernelType	,
		(int, int, int)	)

parameters: use DIM, T_D1D, T_Q1D

SupportsDevice()

bool mfem::DomainLFIntegrator::SupportsDevice ( ) const

inlineoverridevirtual

Method probing for assembly on device.

Reimplemented from mfem::LinearFormIntegrator.

Definition at line 121 of file lininteg.hpp.

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

• fem/lininteg.hpp
• fem/lininteg.cpp