Dune::Functions::DefaultGlobalBasis< PB > Class Template Reference

Global basis for given pre-basis. More...

#include <dune/functions/functionspacebases/defaultglobalbasis.hh>

Public Types
using	PreBasis = PB
	Pre-basis providing the implementation details.
using	PrefixPath = TypeTree::HybridTreePath<>
	The empty prefix path that identifies the root in the local ansatz tree.
using	GridView = typename PreBasis::GridView
	The grid view that the FE space is defined on.
using	size_type = std::size_t
	Type used for indices and size information.
using	LocalView = DefaultLocalView< DefaultGlobalBasis< PreBasis > >
	Type of the local view on the restriction of the basis to a single element.
using	MultiIndex = typename LocalView::MultiIndex
	Type used for global numbering of the basis vectors.
using	SizePrefix = Dune::ReservedVector< std::size_t, PreBasis::multiIndexBufferSize >
	Type used for prefixes handed to the size() method.

Public Member Functions
template<class... T, disableCopyMove< DefaultGlobalBasis, T... > = 0, enableIfConstructible< PreBasis, T... > = 0>
	DefaultGlobalBasis (T &&... t)
	Constructor. More...
template<class PreBasisFactory , std::enable_if_t< Dune::IsCallable< PreBasisFactory(GridView), PreBasis >::value, int > = 0>
	DefaultGlobalBasis (const GridView &gridView, PreBasisFactory &&factory)
	Constructor from a PreBasis factory. More...
const GridView &	gridView () const
	Obtain the grid view that the basis is defined on.
const PreBasis &	preBasis () const
	Obtain the pre-basis providing the implementation details.
PreBasis &	preBasis ()
	Obtain the pre-basis providing the implementation details.
void	update (const GridView &gv)
	Update the stored grid view. More...
size_type	dimension () const
	Get the total dimension of the space spanned by this basis.
size_type	size () const
	Return number of possible values for next position in empty multi index.
size_type	size (const SizePrefix &prefix) const
	Return number of possible values for next position in multi index.
LocalView	localView () const
	Return local view for basis.
const DefaultGlobalBasis &	rootBasis () const
	Return *this because we are not embedded in a larger basis.
const PrefixPath &	prefixPath () const
	Return empty path, because this is the root in the local ansatz tree.

Detailed Description

template<class PB>
class Dune::Functions::DefaultGlobalBasis< PB >

Global basis for given pre-basis.

This class implements the interface of a global basis using the details from a given pre-basis. Hence it serves as an example for this interface.

If you want to implement your own global basis, it may be better to implement a pre-basis instead. On the one hand this needs less boiler-plate code. On the other hand it makes your implementation composable and thus much more flexible. That is, you can reuse your pre-basis as one part in a larger product space by plugging it e.g. into a CompositePreBasis of PowerPreBasis. The actual global basis for your FooPreBasis is then obtained by using DefaultGlobalBasis<FooPreBasis>.

Template Parameters

PB	Pre-basis providing the implementation details

Constructor & Destructor Documentation

DefaultGlobalBasis() [1/2]

template<class PB >

template<class... T, disableCopyMove< DefaultGlobalBasis, T... > = 0, enableIfConstructible< PreBasis, T... > = 0>

Dune::Functions::DefaultGlobalBasis< PB >::DefaultGlobalBasis ( T &&...  t )

inline

Constructor.

Template Parameters

T	Argument list for PreBasis

Parameters

t	Argument list for PreBasis

This will forward all arguments to the constructor of PreBasis

DefaultGlobalBasis() [2/2]

template<class PB >

template<class PreBasisFactory , std::enable_if_t< Dune::IsCallable< PreBasisFactory(GridView), PreBasis >::value, int > = 0>

Dune::Functions::DefaultGlobalBasis< PB >::DefaultGlobalBasis ( const GridView &  gridView, PreBasisFactory &&  factory  )

inline

Constructor from a PreBasis factory.

Parameters

gridView	The GridView this basis is based on
factory	A factory functor that gets the gridView and returns a PreBasis

Member Function Documentation

update()

template<class PB >

void Dune::Functions::DefaultGlobalBasis< PB >::update ( const GridView &  gv )

inline

Update the stored grid view.

This will update the indexing information of the global basis. It must be called if the grid has changed.

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

• dune/functions/functionspacebases/defaultglobalbasis.hh