Class for integrating (Q D_i(u), v); u and v are scalars. More...

#include <bilininteg.hpp>

Inheritance diagram for DerivativeIntegrator:

Collaboration diagram for DerivativeIntegrator:

Public Member Functions
	DerivativeIntegrator (Coefficient &q, int i)
virtual void	AssembleElementMatrix (const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
	Given a particular Finite Element computes the element matrix elmat.
virtual void	AssembleElementMatrix2 (const FiniteElement &trial_fe, const FiniteElement &test_fe, ElementTransformation &Trans, DenseMatrix &elmat)
Private Attributes
Coefficient &	Q
int	xi
DenseMatrix	dshape
DenseMatrix	dshapedxt
DenseMatrix	invdfdx
Vector	shape
Vector	dshapedxi

Detailed Description

Class for integrating (Q D_i(u), v); u and v are scalars.

Definition at line 259 of file bilininteg.hpp.

Constructor & Destructor Documentation

DerivativeIntegrator::DerivativeIntegrator	(	Coefficient &	q,
		int	i
	)		`[inline]`

Definition at line 267 of file bilininteg.hpp.

Member Function Documentation

virtual void DerivativeIntegrator::AssembleElementMatrix	(	const FiniteElement &	el,
		ElementTransformation &	Trans,
		DenseMatrix &	elmat
	)		`[inline, virtual]`

Given a particular Finite Element computes the element matrix elmat.

Reimplemented from BilinearFormIntegrator.

Definition at line 268 of file bilininteg.hpp.

References AssembleElementMatrix2().

void DerivativeIntegrator::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 BilinearFormIntegrator.

Definition at line 481 of file bilininteg.cpp.

References AddMultVWt(), FiniteElement::CalcDShape(), CalcInverse(), FiniteElement::CalcShape(), dshape, dshapedxi, dshapedxt, Coefficient::Eval(), IntegrationRules::Get(), FiniteElement::GetDim(), FiniteElement::GetDof(), FiniteElement::GetGeomType(), IntegrationRule::GetNPoints(), FiniteElement::GetOrder(), IntegrationRule::IntPoint(), IntRules, invdfdx, ElementTransformation::Jacobian(), Mult(), FunctionSpace::Pk, Q, RefinedIntRules, FunctionSpace::rQk, ElementTransformation::SetIntPoint(), Vector::SetSize(), DenseMatrix::SetSize(), shape, FiniteElement::Space(), IntegrationPoint::weight, ElementTransformation::Weight(), and xi.