Models an analytical constraint. More...

#include <analytical.hh>

Inheritance diagram for constraints::AnalyticalConstraint< F >:

Collaboration diagram for constraints::AnalyticalConstraint< F >:

Public Member Functions
virtual void	assembly (const concepts::Element< F > &e, concepts::TColumn< F > *&t, uint &n, uint &j, uint length)=0
	Returns the TColumns `t` for this constraint in element `e`.
virtual AnalyticalConstraint< F > *	clone () const =0
	Creates clone of itself and returns it.
virtual void	lengthT (const concepts::Element< F > &e, uint &length)=0
	Computes the length of the TColumn.
virtual void	localMatrix (concepts::ElementMatrix< F > &em, uint &j, const Element< F > &elm) const =0
	Fills the entries in the local constraints matrix `em`.
virtual void	localVector (concepts::ElementMatrix< F > &em, uint &j, const Element< F > &elm) const =0
	Fills the entries in the local constraints vector `em`.
Protected Member Functions
virtual std::ostream &	info (std::ostream &os) const
	Returns information in an output stream.

Detailed Description

template<typename F>
class constraints::AnalyticalConstraint< F >

Models an analytical constraint.

This class can generate the information for assembling the constraints (assembly) for the constraints matrix (localMatrix) and for the constraints vector (localVector). They are all used by ConstraintsList.

Examples:

a condition on a part of the boundary (ie. homogeneous Dirichlet)
a condition on the whole domain (ie. mean value zero)

Author:: Philipp Frauenfelder, 2002

Definition at line 40 of file analytical.hh.

Member Function Documentation

template<typename F>

virtual void constraints::AnalyticalConstraint< F >::assembly	(	const concepts::Element< F > &	e,
		concepts::TColumn< F > *&	t,
		uint &	n,
		uint &	j,
		uint	length
	)		`[pure virtual]`

Returns the TColumns t for this constraint in element e.

n contains the next free global index in the space of constraints.

When treating dof by dof constraints, n should be increased after the creation of the TColumn (which gets as global index the old value of n).

When treating global constraints such as a zero mean value, n should be increased only once and all local constraints have to give this index to idx in the constructor of the new TColumn.

A similar idea stands behind j: it counts the local constraints which have already been treated. It therefore has to be increased after treating a constraint. j can be taken as index for the created TColumn to fill in the correct entry.

Parameters:

e	Element of the computational space
t	List of TColumns
n	Next free global index in the space of constraints. `n` is increased if a global constraint is hit for the first time.
j	Next free local index for the constraints in this element. `j` is increased accordingly when treating constraints in this element.
length	Length of TColumn

See also:: concepts::TColumn

Implemented in EpsJumpZero< F >, ZeroTangentialValue< F >, and hp3D::ZeroTangentialValue< F >.

template<typename F>

virtual AnalyticalConstraint<F>* constraints::AnalyticalConstraint< F >::clone ( ) const [pure virtual]

Creates clone of itself and returns it.

This clone function implements a virtual constructor (cf. Stroustrup p. 424).

Implemented in EpsJumpZero< F >, ZeroTangentialValue< F >, and hp3D::ZeroTangentialValue< F >.

virtual std::ostream& concepts::OutputOperator::info ( std::ostream & os ) const [protected, virtual, inherited]

Returns information in an output stream.

template<typename F>

virtual void constraints::AnalyticalConstraint< F >::lengthT	(	const concepts::Element< F > &	e,
		uint &	length
	)		`[pure virtual]`

Computes the length of the TColumn.

This method decides if this constraint is active on element e and how many local equations it generates. This is added to length.

Implemented in EpsJumpZero< F >, ZeroTangentialValue< F >, and hp3D::ZeroTangentialValue< F >.

template<typename F>

virtual void constraints::AnalyticalConstraint< F >::localMatrix	(	concepts::ElementMatrix< F > &	em,
		uint &	j,
		const Element< F > &	elm
	)		const `[pure virtual]`

Fills the entries in the local constraints matrix em.

Parameters:

em	Local constraints matrix. Has to be filled. The rows correspond to local dofs, the columns correspond to the equations this constraints creates in this element.
j	Local number of the constraints. Everytime, when a active constraint on the element is treated, `j` has to be increased by the number of equations this constraint created.
elm	Element of the constraints space

Implemented in EpsJumpZero< F >, ZeroTangentialValue< F >, and hp3D::ZeroTangentialValue< F >.

template<typename F>

virtual void constraints::AnalyticalConstraint< F >::localVector	(	concepts::ElementMatrix< F > &	em,
		uint &	j,
		const Element< F > &	elm
	)		const `[pure virtual]`

Fills the entries in the local constraints vector em.

The parameters have the same meaning as in localMatrix.

Implemented in EpsJumpZero< F >, ZeroTangentialValue< F >, and hp3D::ZeroTangentialValue< F >.

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

constraints/analytical.hh

Public Member Functions

Protected Member Functions

Detailed Description

template<typename F> class constraints::AnalyticalConstraint< F >

Member Function Documentation

template<typename F>
class constraints::AnalyticalConstraint< F >