#include <field_algo_base.hh>

Inheritance diagram for FieldAlgorithmBase< spacedim, Value >:

Collaboration diagram for FieldAlgorithmBase< spacedim, Value >:

Public Types
typedef Space< spacedim >::Point	Point

typedef Value	ValueType

Public Member Functions
	FieldAlgorithmBase (unsigned int n_comp=0)

virtual void	init_from_input (const Input::Record &rec)

virtual bool	set_time (double time)

virtual void	set_mesh (const Mesh *mesh, bool boundary_domain)

unsigned int	n_comp () const

FieldResult	field_result () const

virtual double	next_change_time ()

virtual Value::return_type const &	value (const Point &p, const ElementAccessor< spacedim > &elm)=0

virtual void	value_list (const std::vector< Point > &point_list, const ElementAccessor< spacedim > &elm, std::vector< typename Value::return_type > &value_list)=0

virtual	~FieldAlgorithmBase ()

Static Public Member Functions
static std::string	template_name ()

static Input::Type::AbstractRecord	get_input_type (const typename Value::ElementInputType *element_input_type=nullptr)

static std::shared_ptr < FieldAlgorithmBase< spacedim, Value > >	function_factory (const Input::AbstractRecord &rec, unsigned int n_comp=0)

Static Public Attributes
static const unsigned int	spacedim_ =spacedim

static Input::Type::AbstractRecord	input_type

Protected Attributes
double	time_
	Actual time level; initial value is -infinity. More...

Value	value_
	Last value, prevents passing large values (vectors) by value. More...

Value::return_type	r_value_

FieldResult	field_result_
	Indicator of particular values (zero, one) constant over space. More...

Detailed Description

template<int spacedim, class Value>
class FieldAlgorithmBase< spacedim, Value >

Base class for space-time function classes.

Definition at line 53 of file field_algo_base.hh.

Member Typedef Documentation

template<int spacedim, class Value>

typedef Space<spacedim>::Point FieldAlgorithmBase< spacedim, Value >::Point

Definition at line 56 of file field_algo_base.hh.

template<int spacedim, class Value>

typedef Value FieldAlgorithmBase< spacedim, Value >::ValueType

Definition at line 57 of file field_algo_base.hh.

Constructor & Destructor Documentation

template<int spacedim, class Value >

FieldAlgorithmBase< spacedim, Value >::FieldAlgorithmBase ( unsigned int n_comp = 0 )

Kind of default constructor , with possible setting of the initial time. Fields that returns variable size vectors accepts number of components n_comp.

Definition at line 35 of file field_algo_base.impl.hh.

template<int spacedim, class Value>

virtual FieldAlgorithmBase< spacedim, Value >::~FieldAlgorithmBase ( )

inlinevirtual

Virtual destructor.

Definition at line 172 of file field_algo_base.hh.

Member Function Documentation

template<int spacedim, class Value>

FieldResult FieldAlgorithmBase< spacedim, Value >::field_result ( ) const

inline

Special field values spatially constant. Could allow optimization of tensor multiplication and tensor or vector addition. field_result_ should be set in constructor and in set_time method of particular Field implementation.

Definition at line 128 of file field_algo_base.hh.

template<int spacedim, class Value >

shared_ptr< FieldAlgorithmBase< spacedim, Value > > FieldAlgorithmBase< spacedim, Value >::function_factory	(	const Input::AbstractRecord &	rec,
		unsigned int	n_comp = `0`
	)

static

This static method gets accessor to abstract record with function input, dispatch to correct constructor and initialize appropriate function object from the input. Returns shared pointer to FunctionBase<>.

Definition at line 78 of file field_algo_base.impl.hh.

template<int spacedim, class Value>

Input::Type::AbstractRecord FieldAlgorithmBase< spacedim, Value >::get_input_type ( const typename Value::ElementInputType * element_input_type = nullptr )

static

Returns whole tree of input types for FieldBase with all descendants based on element input type (namely for FieldConstant) given by element_input_type pointer. USE ONLY IF YOU CAN NOT USE static member FieldBase<...>::input_type.

Definition at line 59 of file field_algo_base.impl.hh.

template<int spacedim, class Value >

void FieldAlgorithmBase< spacedim, Value >::init_from_input ( const Input::Record & rec )

virtual

Function can provide way to initialize itself from the input data.

TODO: make protected, should be called through function factory

Reimplemented in FieldInterpolatedP0< spacedim, Value >, FieldElementwise< spacedim, Value >, FieldConstant< spacedim, Value >, FieldPython< spacedim, Value >, and FieldFormula< spacedim, Value >.

Definition at line 104 of file field_algo_base.impl.hh.

template<int spacedim, class Value >

unsigned int FieldAlgorithmBase< spacedim, Value >::n_comp ( ) const

Returns number of rows, i.e. number of components for variable size vectors. For values of fixed size returns zero.

Definition at line 126 of file field_algo_base.impl.hh.

template<int spacedim, class Value>

virtual double FieldAlgorithmBase< spacedim, Value >::next_change_time ( )

inlinevirtual

Method for getting some information about next time where the function change its character. Used to add appropriate TimeMarks. TODO: think what kind of information we may need, is the next time value enough?

Definition at line 136 of file field_algo_base.hh.

template<int spacedim, class Value >

void FieldAlgorithmBase< spacedim, Value >::set_mesh	(	const Mesh *	mesh,
		bool	boundary_domain
	)

virtual

Is used only by some Field implementations, but can be used to check validity of incoming ElementAccessor in value methods.

Optional parameter boundary_domain can be used to specify, that the field will be evaluated only on the boundary part of the mesh. TODO: make separate mesh for the boundary, then we can drop this parameter.

Reimplemented in FieldElementwise< spacedim, Value >.

Definition at line 120 of file field_algo_base.impl.hh.

template<int spacedim, class Value >

bool FieldAlgorithmBase< spacedim, Value >::set_time ( double time )

virtual

Set new time value. Some Fields may and some may not implement time dependent values and possibly various types of interpolation. There can not be unified approach to interpolation (at least not on this abstraction level) since some fields (FieldFormula, FieldPython) provides naturally time dependent functions other fields like (FieldConstant, ...), however, can be equipped by various time interpolation schemes. In future, we obviously need time interpolation of higher order so that we can use ODE integrators of higher order.

The method returns true if the value of the field has changed in the new time step.

Reimplemented in FieldElementwise< spacedim, Value >, FieldInterpolatedP0< spacedim, Value >, FieldAddPotential< spacedim, Value >, and FieldFormula< spacedim, Value >.

Definition at line 112 of file field_algo_base.impl.hh.

template<int spacedim, class Value >

string FieldAlgorithmBase< spacedim, Value >::template_name ( )

static

Returns template parameters as string in order to distinguish name of AbstractRecords for initialization of different instances of the FieldBase template.

Definition at line 45 of file field_algo_base.impl.hh.

template<int spacedim, class Value>

virtual Value::return_type const& FieldAlgorithmBase< spacedim, Value >::value	(	const Point &	p,
		const ElementAccessor< spacedim > &	elm
	)

pure virtual

Returns one value in one given point on an element given by ElementAccessor elm. It returns reference to he actual value in order to avoid temporaries for vector and tensor values.

This method just call the later one value(Point, ElementAccessor, Value) and drops the FieldResult.

Usual implementation of this method fills member r_value_ through unified envelope value_ as general tensor and then returns member r_value_. However, some particular Fields may have result stored elsewhere, in such a case the reference to the result can be returned directly without using the member value_. Keeping such wide space for optimization has drawback in slow generic implementation of the value_list method that fills whole vector of values for vector of points. Its generic implementation has to copy all values instead of directly store them into the vector of result values.

So the best practice when implementing value and methods in particular FieldBase descendant is implement some thing like value(point, elm, Value::return_type &value) and using s having in part

Implemented in FieldElementwise< spacedim, Value >, FieldInterpolatedP0< spacedim, Value >, FieldPython< spacedim, Value >, FieldConstant< spacedim, Value >, FieldFE< spacedim, Value >, FieldFormula< spacedim, Value >, and FieldAddPotential< spacedim, Value >.

template<int spacedim, class Value>

void FieldAlgorithmBase< spacedim, Value >::value_list	(	const std::vector< Point > &	point_list,
		const ElementAccessor< spacedim > &	elm,
		std::vector< typename Value::return_type > &	value_list
	)

pure virtual

Returns std::vector of scalar values in several points at once. The base class implements trivial implementation using the value(,,) method. This is not optimal as it involves lot of virtual calls, but this overhead can be negligible for more complex fields as Python of Formula.

FieldAlgorithmBase provides a slow implementation using the value() method. Derived Field can implement its value_list method as call of FieldAlgoritmBase<...>::value_list().

Implemented in FieldElementwise< spacedim, Value >, FieldInterpolatedP0< spacedim, Value >, FieldPython< spacedim, Value >, FieldConstant< spacedim, Value >, FieldFE< spacedim, Value >, FieldFormula< spacedim, Value >, and FieldAddPotential< spacedim, Value >.

Definition at line 133 of file field_algo_base.impl.hh.

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Member Data Documentation

template<int spacedim, class Value>

FieldResult FieldAlgorithmBase< spacedim, Value >::field_result_

protected

Indicator of particular values (zero, one) constant over space.

Definition at line 182 of file field_algo_base.hh.

template<int spacedim, class Value>

it::AbstractRecord FieldAlgorithmBase< spacedim, Value >::input_type

static

Initial value:

= it::AbstractRecord("Field:"+template_name(), "Abstract record for all time-space functions.")

.allow_auto_conversion("FieldConstant")

Declaration of input type data member.

Definition at line 76 of file field_algo_base.hh.

template<int spacedim, class Value>

Value::return_type FieldAlgorithmBase< spacedim, Value >::r_value_

protected

Definition at line 180 of file field_algo_base.hh.

template<int spacedim, class Value>

const unsigned int FieldAlgorithmBase< spacedim, Value >::spacedim_ =spacedim

static

Definition at line 58 of file field_algo_base.hh.

template<int spacedim, class Value>

double FieldAlgorithmBase< spacedim, Value >::time_

protected

Actual time level; initial value is -infinity.

Definition at line 177 of file field_algo_base.hh.

template<int spacedim, class Value>

Value FieldAlgorithmBase< spacedim, Value >::value_

protected

Last value, prevents passing large values (vectors) by value.

Definition at line 179 of file field_algo_base.hh.

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

/home/Jenkins/jenkins/F123-windows32-release/flow123d/src/fields/field_algo_base.hh
/home/Jenkins/jenkins/F123-windows32-release/flow123d/src/fields/field_algo_base.impl.hh

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Attributes

Detailed Description

template<int spacedim, class Value> class FieldAlgorithmBase< spacedim, Value >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<int spacedim, class Value>
class FieldAlgorithmBase< spacedim, Value >