Adaptor for turning a Fufem::Forms LocalOperator into a LocalFunction. More...

#include <dune/fufem/forms/localfunctionadaptor.hh>

Public Types
using	Element = typename LocalOperator::Element

using	Range = typename LocalOperator::Range

Public Member Functions
	LocalFunctionAdaptor (LocalOperator &&localOperator)

	LocalFunctionAdaptor (const LocalOperator &localOperator)

	LocalFunctionAdaptor (const LocalFunctionAdaptor &other)

	LocalFunctionAdaptor (LocalFunctionAdaptor &&other)

void	bind (const Element &element)
	Bind the LocalFunction to an element.

void	unbind ()
	Unbind the LocalFunction.

bool	bound () const
	Check if LocalFunction is already bound to an element.

auto	operator() (const Domain &x) const
	Evaluate the local function.

const Element &	localContext () const
	Return the element the local-function is bound to.

Detailed Description

template<class LocalOperator>
class Dune::Fufem::Forms::LocalFunctionAdaptor< LocalOperator >

Adaptor for turning a Fufem::Forms LocalOperator into a LocalFunction.

In Dune::Fufem::Forms a LocalOperator represents the localized version of a multilinear operator from a tuple of finite element spaces to the integrable functions. In this sense a 0-linear (or nullary) operator represents a fixed integrable function and its LocalOperator is essentially a LocalFunction in the sense of Dune::Functions. However, the interface of a nullary LocalOperator and a nullary LocalFunction is slightly different: While the LocalFunction can simply be evaluated at points given by local coordinates, a LocalOperator implements cached evaluations an thus requires to first being bound to a cache associated to a QuadratureRule and then being evaluated at a QuadraturePoint identified by an index.

The LocalFunctionAdaptor adapts a LocalOperator to the LocalFunction interface by managing a local cache and binding passing it to the operator in the desired form. This is meant to be used in nullary Dune::Fufem::Forms operators to implement the GridFunction interface of Dune::Functions.