A class that performs interpolation from an E-vector to quadrature point values and/or derivatives (Q-vectors). More...

#include <fespace.hpp>

Collaboration diagram for mfem::QuadratureInterpolator:

Public Types
enum	EvalFlags { VALUES = 1 << 0, DERIVATIVES = 1 << 1, DETERMINANTS = 1 << 2 }

Public Member Functions
	QuadratureInterpolator (const FiniteElementSpace &fes, const IntegrationRule &ir)

	QuadratureInterpolator (const FiniteElementSpace &fes, const QuadratureSpace &qs)

void	DisableTensorProducts (bool disable=true) const
	Disable the use of tensor product evaluations, for tensor-product elements, e.g. quads and hexes. More...

void	Mult (const Vector &e_vec, unsigned eval_flags, Vector &q_val, Vector &q_der, Vector &q_det) const
	Interpolate the E-vector e_vec to quadrature points. More...

void	MultTranspose (unsigned eval_flags, const Vector &q_val, const Vector &q_der, Vector &e_vec) const
	Perform the transpose operation of Mult(). (TODO) More...

Static Public Member Functions
template<const int T_VDIM = 0, const int T_ND = 0, const int T_NQ = 0>
static void	Eval2D (const int NE, const int vdim, const DofToQuad &maps, const Vector &e_vec, Vector &q_val, Vector &q_der, Vector &q_det, const int eval_flags)
	Template compute kernel for 2D. More...

template<const int T_VDIM = 0, const int T_ND = 0, const int T_NQ = 0>
static void	Eval3D (const int NE, const int vdim, const DofToQuad &maps, const Vector &e_vec, Vector &q_val, Vector &q_der, Vector &q_det, const int eval_flags)
	Template compute kernel for 3D. More...

Protected Attributes
const FiniteElementSpace *	fespace
	Not owned. More...

const QuadratureSpace *	qspace
	Not owned. More...

const IntegrationRule *	IntRule
	Not owned. More...

bool	use_tensor_products

Static Protected Attributes
static const int	MAX_NQ2D = 100

static const int	MAX_ND2D = 100

static const int	MAX_VDIM2D = 2

static const int	MAX_NQ3D = 1000

static const int	MAX_ND3D = 1000

static const int	MAX_VDIM3D = 3

Friends
class	FiniteElementSpace

Detailed Description

A class that performs interpolation from an E-vector to quadrature point values and/or derivatives (Q-vectors).

An E-vector represents the element-wise discontinuous version of the FE space and can be obtained, for example, from a GridFunction using the Operator returned by FiniteElementSpace::GetElementRestriction().

The target quadrature points in the elements can be described either by an IntegrationRule (all mesh elements must be of the same type in this case) or by a QuadratureSpace.

Definition at line 909 of file fespace.hpp.

Member Enumeration Documentation

enum mfem::QuadratureInterpolator::EvalFlags

Enumerator
VALUES	Evaluate the values at quadrature points.
DERIVATIVES	Evaluate the derivatives at quadrature points.
DETERMINANTS	Assuming the derivative at quadrature points form a matrix, this flag can be used to compute and store their determinants. This flag can only be used in Mult().

Definition at line 929 of file fespace.hpp.

Constructor & Destructor Documentation

mfem::QuadratureInterpolator::QuadratureInterpolator	(	const FiniteElementSpace &	fes,
		const IntegrationRule &	ir
	)

Definition at line 2769 of file fespace.cpp.

mfem::QuadratureInterpolator::QuadratureInterpolator	(	const FiniteElementSpace &	fes,
		const QuadratureSpace &	qs
	)

Definition at line 2783 of file fespace.cpp.

Member Function Documentation

void mfem::QuadratureInterpolator::DisableTensorProducts ( bool disable = true ) const

inline

Disable the use of tensor product evaluations, for tensor-product elements, e.g. quads and hexes.

Currently, tensor product evaluations are not implemented and this method has no effect.

Definition at line 949 of file fespace.hpp.

template<const int T_VDIM, const int T_ND, const int T_NQ>

void mfem::QuadratureInterpolator::Eval2D	(	const int	NE,
		const int	vdim,
		const DofToQuad &	maps,
		const Vector &	e_vec,
		Vector &	q_val,
		Vector &	q_der,
		Vector &	q_det,
		const int	eval_flags
	)

static

Template compute kernel for 2D.

Definition at line 2798 of file fespace.cpp.

template<const int T_VDIM, const int T_ND, const int T_NQ>

void mfem::QuadratureInterpolator::Eval3D	(	const int	NE,
		const int	vdim,
		const DofToQuad &	maps,
		const Vector &	e_vec,
		Vector &	q_val,
		Vector &	q_der,
		Vector &	q_det,
		const int	eval_flags
	)

static

Template compute kernel for 3D.

Definition at line 2886 of file fespace.cpp.

void mfem::QuadratureInterpolator::Mult	(	const Vector &	e_vec,
		unsigned	eval_flags,
		Vector &	q_val,
		Vector &	q_der,
		Vector &	q_det
	)		const

Interpolate the E-vector e_vec to quadrature points.

The eval_flags are a bitwise mask of constants from the EvalFlags enumeration. When the VALUES flag is set, the values at quadrature points are computed and stored in the Vector q_val. Similarly, when the flag DERIVATIVES is set, the derivatives are computed and stored in q_der. When the DETERMINANTS flags is set, it is assumed that the derivatives form a matrix at each quadrature point (i.e. the associated FiniteElementSpace is a vector space) and their determinants are computed and stored in q_det.

Definition at line 2978 of file fespace.cpp.

void mfem::QuadratureInterpolator::MultTranspose	(	unsigned	eval_flags,
		const Vector &	q_val,
		const Vector &	q_der,
		Vector &	e_vec
	)		const

Perform the transpose operation of Mult(). (TODO)

Definition at line 3119 of file fespace.cpp.

Friends And Related Function Documentation

friend class FiniteElementSpace

friend

Definition at line 912 of file fespace.hpp.

Member Data Documentation

const FiniteElementSpace* mfem::QuadratureInterpolator::fespace

protected

Not owned.

Definition at line 914 of file fespace.hpp.

const IntegrationRule* mfem::QuadratureInterpolator::IntRule

protected

Not owned.

Definition at line 916 of file fespace.hpp.

const int mfem::QuadratureInterpolator::MAX_ND2D = 100

staticprotected

Definition at line 921 of file fespace.hpp.

const int mfem::QuadratureInterpolator::MAX_ND3D = 1000

staticprotected

Definition at line 925 of file fespace.hpp.

const int mfem::QuadratureInterpolator::MAX_NQ2D = 100

staticprotected

Definition at line 920 of file fespace.hpp.

const int mfem::QuadratureInterpolator::MAX_NQ3D = 1000

staticprotected

Definition at line 924 of file fespace.hpp.

const int mfem::QuadratureInterpolator::MAX_VDIM2D = 2

staticprotected

Definition at line 922 of file fespace.hpp.

const int mfem::QuadratureInterpolator::MAX_VDIM3D = 3

staticprotected

Definition at line 926 of file fespace.hpp.

const QuadratureSpace* mfem::QuadratureInterpolator::qspace

protected

Not owned.

Definition at line 915 of file fespace.hpp.

bool mfem::QuadratureInterpolator::use_tensor_products

mutableprotected

Definition at line 918 of file fespace.hpp.

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

fem/fespace.hpp
fem/fespace.cpp

Public Types

Public Member Functions

Static Public Member Functions

Protected Attributes

Static Protected Attributes

Friends

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation