LinearFilter Class Reference

Linearization filter for use in nonlinear problems. From one or two previous solution values it extrapolates an estimate of the new one. With adaptive time step: tau_frac = tau_new / tau_old. More...

#include <filter.h>

Inherits Filter.

List of all members.

Public Member Functions
	LinearFilter (MeshFunction *old)
	LinearFilter (MeshFunction *older, MeshFunction *old, double tau_frac=1)
virtual scalar	get_pt_value (double x, double y, int item=H2D_FN_VAL_0)
Protected Member Functions
virtual void	precalculate (int order, int mask)
	precalculates the current function at the current integration points.
void	init_components ()
virtual void	set_active_element (Element *e)
	Called by the assembling procedure and by other functions. In PrecalcShapeset it sets an internal variable that can be later retrieved by get_active_element(). In Solution it selects the element to retrieve solution values for, etc.
Protected Attributes
double	tau_frac

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Detailed Description

Linearization filter for use in nonlinear problems. From one or two previous solution values it extrapolates an estimate of the new one. With adaptive time step: tau_frac = tau_new / tau_old.

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Constructor & Destructor Documentation

LinearFilter::LinearFilter

(

MeshFunction *

old

)

LinearFilter::LinearFilter	(	MeshFunction *	older,
		MeshFunction *	old,
		double	tau_frac = 1
	)

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Member Function Documentation

virtual scalar LinearFilter::get_pt_value	(	double	x,
		double	y,
		int	item = H2D_FN_VAL_0
	)			[inline, virtual]

Implements MeshFunction.

void LinearFilter::init_components

(

)

[protected]

void LinearFilter::precalculate	(	int	order,
		int	mask
	)			[protected, virtual]

precalculates the current function at the current integration points.

Implements Function< TYPE >.

void LinearFilter::set_active_element

(

Element *

e

)

[protected, virtual]

Called by the assembling procedure and by other functions. In PrecalcShapeset it sets an internal variable that can be later retrieved by get_active_element(). In Solution it selects the element to retrieve solution values for, etc.

Parameters:

e

[in] Element associated with the function being represented by the class.

Reimplemented from Filter.

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Member Data Documentation

double LinearFilter::tau_frac [protected]

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

• /var/www2/hermes2d/hermes2d/src/filter.h
• /var/www2/hermes2d/hermes2d/src/filter.cpp