Hermes::Hermes2D::DiscontinuousFunc< T > Class Template Reference

This class represents a function with jump discontinuity on an interface of two elements. More...

#include "src/form/forms.h"

Inheritance diagram for Hermes::Hermes2D::DiscontinuousFunc< T >:

Public Member Functions
	DiscontinuousFunc (Func< T > *fn, bool support_on_neighbor, bool reverse=false)
	DiscontinuousFunc (Func< T > *fn_c, Func< T > *fn_n, bool reverse=false)
void	free ()
void	subtract (const DiscontinuousFunc< T > &func)

Public Attributes
Func< T > *	fn_central
	Central element's component.
Func< T > *	fn_neighbor
	Neighbor element's component.
T *	val
	Function values. If T == Hermes::Ord and orders vary with direction, this returns max(h_order, v_order).
T *	dx
	First-order partial derivatives.
T *	dy
T *	val_neighbor
	Function values. If T == Hermes::Ord and orders vary with direction, this returns max(h_order, v_order).
T *	dx_neighbor
	First-order partial derivatives.
T *	dy_neighbor
bool	reverse_neighbor_side
	True if values from the neighbor have to be retrieved in reverse order. More...

Static Public Attributes
static T	zero

Detailed Description

template<typename T>
class Hermes::Hermes2D::DiscontinuousFunc< T >

This class represents a function with jump discontinuity on an interface of two elements.

We will refer to one of the elements sharing the interface of discontinuity as to the central element, while to the other one as to the neighbor element.

Instance of the class may be constructed either with two Func objects, which represent the continuous components on the central and the neighbor element, respectively, or with only one Func object and information about its support (where it attains non-zero value). The discontinuous function is in the latter case constructed by extending the supplied function by zero to the other element. Values and derivatives from both elements may then be obtained by querying the corresponding Func object, using methods get_val_central, get_val_neighbor, etc.

Definition at line 335 of file forms.h.

Constructor & Destructor Documentation

template<typename T >

Hermes::Hermes2D::DiscontinuousFunc< T >::DiscontinuousFunc	(	Func< T > *	fn,
		bool	support_on_neighbor,
		bool	reverse = false
	)

One-component constructor.

Parameters

[in]	fn	Function defined either on the central or the neighbor element.
[in]	support_on_neighbor	True if fn is defined on the neighbor element, false if on the central element.
[in]	reverse	Same meaning as reverse_neighbor_side.

Definition at line 192 of file forms.cpp.

template<typename T >

Hermes::Hermes2D::DiscontinuousFunc< T >::DiscontinuousFunc	(	Func< T > *	fn_c,
		Func< T > *	fn_n,
		bool	reverse = false
	)

Two-component constructor.

Parameters

[in]	fn_c	Function defined on the central element.
[in]	fn_n	Function defined on the neighbor element.
[in]	reverse	Same meaning as reverse_neighbor_side.

Definition at line 232 of file forms.cpp.

Member Data Documentation

template<typename T>

bool Hermes::Hermes2D::DiscontinuousFunc< T >::reverse_neighbor_side

True if values from the neighbor have to be retrieved in reverse order.

(when retrieving values on an edge that is oriented differently in both elements). Zero value used for the zero-extension.

Definition at line 375 of file forms.h.

Referenced by Hermes::Hermes2D::DiscontinuousFunc< T >::DiscontinuousFunc().

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

• forms.h
• forms.cpp