Dune::Fem::LocalAnalyticalFunctionBinder< DiscreteFunctionSpaceImpl > Class Template Reference

LocalAnalyticalFunctionBinder binds a C++ local analytical function (and also its Jacobian and Hessian) to an object which provides all the methods and types needed by the LocalFunctionAdapter. It stores a copy as a std::function. More...

#include <dune/fem/function/common/localfunctionadapter.hh>

Public Types
typedef EntityType::Geometry	Geometry
	type of geometry
typedef Geometry::ctype	ctype
	type of coordinate field
typedef std::decay_t< decltype(Dune::ReferenceElements< ctype, Geometry::coorddimension >::general(std::declval< const Dune::GeometryType & >())) >	ReferenceElementType
	type of reference element

Public Member Functions
	LocalAnalyticalFunctionBinder (const AnalyticalFunctionType &f=[](const auto &, auto, const auto &){return RangeType(0.0);}, const AnalyticalJacobianType &j=[](const auto &, auto, const auto &){return JacobianRangeType(0.0);}, const AnalyticalHessianType &h=[](const auto &, auto, const auto &){return HessianRangeType(0.0);}, double t=0.0)
	constructor
AnalyticalFunctionType &	function ()
	get local function
const AnalyticalFunctionType &	function () const
	get local function
AnalyticalJacobianType &	jacobian ()
	get jacobian local function
const AnalyticalJacobianType &	jacobian () const
	get jacobian local function
AnalyticalHessianType &	hessian ()
	get hessian local function
const AnalyticalHessianType &	hessian () const
	get hessian local function
template<class PointType >
void	evaluate (const PointType &x, RangeType &ret) const
	evaluate local function
template<class PointType >
void	jacobian (const PointType &x, JacobianRangeType &ret) const
	evaluate jacobian local function
template<class PointType >
void	hessian (const PointType &x, HessianRangeType &ret) const
	evaluate hessian local function
void	init (const EntityType &entity)
	initialize entity
template<typename Arg >
void	initialize (Arg &&, double time)
	initialize time
double	time () const
	get time
const Entity &	entity () const
	return entity
bool	valid () const
	return true if entity pointer is set
const Geometry &	geometry () const
	return geometry
Dune::GeometryType	type () const
	return geometry type
const ReferenceElementType &	referenceElement () const
	return reference element
void	bind (const EntityType &entity)
	set new entity object and geometry if enabled
void	unbind ()
	release entity and geometry object

Detailed Description

template<class DiscreteFunctionSpaceImpl>
class Dune::Fem::LocalAnalyticalFunctionBinder< DiscreteFunctionSpaceImpl >

LocalAnalyticalFunctionBinder binds a C++ local analytical function (and also its Jacobian and Hessian) to an object which provides all the methods and types needed by the LocalFunctionAdapter. It stores a copy as a std::function.

Therefore, in order to transform the function

RangeType f(const DomainType& x,double t,const EntityType& entity) { // do stuff }

into a grid function, it is sufficient to pass it to the LocalAnalyticalFucntionBinder

typedef LocalAnalyticalFunctionBinder<DiscreteFunctionSpaceType> LocalAnalyticalFunctionType; LocalAnalyticalFunctionType localAnalyticalFunction(f);

and create the LocalFunctionAdapter

typedef LocalFunctionAdapter<LocalAnalyticalFunctionType> AdaptedFunctionType; AdaptedFunctionType fAdapted("adapted function",localAnalyticalFunction,gridPart);

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

• dune/fem/function/common/localfunctionadapter.hh