Aim: model of CConstBidirectionalRange that adapts any range of elements bounded by two iterators [itb, ite) and provides services to (circularly)iterate over it (in a read-only manner). More...

#include <DGtal/base/ConstRangeAdapter.h>

Public Types
typedef ConstIteratorAdapter< TIterator, TFunctor, TReturnType >	ConstIterator

typedef ReverseIterator< ConstIterator >	ConstReverseIterator

typedef Circulator< ConstIterator >	ConstCirculator

typedef ReverseIterator< ConstCirculator >	ConstReverseCirculator

typedef IteratorCirculatorTraits< ConstIterator >::Difference	Difference

Public Member Functions
	ConstRangeAdapter (const TIterator &itb, const TIterator &ite, const TFunctor &aFunctor)

	ConstRangeAdapter (const TIterator &itb, const TIterator &ite, const TFunctor *aFunctorPtr)

	ConstRangeAdapter (const ConstRangeAdapter &other)

	~ConstRangeAdapter ()

bool	isValid () const

Difference	size () const

void	selfDisplay (std::ostream &out) const

std::string	className () const

ConstIterator	begin () const

ConstIterator	end () const

ConstReverseIterator	rbegin () const

ConstReverseIterator	rend () const

ConstCirculator	c () const

ConstReverseCirculator	rc () const

Private Member Functions
	BOOST_CONCEPT_ASSERT ((boost_concepts::ReadableIteratorConcept< TIterator >))

	BOOST_CONCEPT_ASSERT ((boost_concepts::BidirectionalTraversalConcept< TIterator >))

ConstRangeAdapter &	operator= (const ConstRangeAdapter &other)

Difference	size (const TIterator &itb, const TIterator &ite, RandomAccessCategory) const

Difference	size (const TIterator &itb, const TIterator &ite, BidirectionalCategory) const

Private Attributes
TIterator	myBegin

TIterator	myEnd

const TFunctor *	myFunctor

bool	myFlagIsOwned

Detailed Description

template<typename TIterator, typename TFunctor, typename TReturnType>
class DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >

Aim: model of CConstBidirectionalRange that adapts any range of elements bounded by two iterators [itb, ite) and provides services to (circularly)iterate over it (in a read-only manner).

Template Parameters

TIterator the type of the iterator to adapt (at least bidirectional).

Moreover, the provided (circular)iterator is adapted with a functor f given at construction so that operator* calls f(*it), instead of calling directly operator* of the underlying iterator it.

Template Parameters

TFunctor	the type of functor that transforms the pointed element into another one
TReturnType	the type of the element returned by the underlying functor.

NB: the underlying functor is stored in the range as aliasing pointer in order to avoid copies. As a consequence the pointed object must exist and must not be deleted during the use of the range.

See also: ConstIteratorAdapter BasicFunctors.h BasicPointFunctors.h SCellsFunctors.h

Examples: geometry/curves/estimation/exampleCurvature.cpp, and geometry/tools/exampleAlphaShape.cpp.

Definition at line 86 of file ConstRangeAdapter.h.

Member Typedef Documentation

◆ ConstCirculator

template<typename TIterator , typename TFunctor , typename TReturnType >

typedef Circulator<ConstIterator> DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::ConstCirculator

Definition at line 98 of file ConstRangeAdapter.h.

◆ ConstIterator

template<typename TIterator , typename TFunctor , typename TReturnType >

typedef ConstIteratorAdapter<TIterator,TFunctor,TReturnType> DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::ConstIterator

Definition at line 95 of file ConstRangeAdapter.h.

◆ ConstReverseCirculator

template<typename TIterator , typename TFunctor , typename TReturnType >

typedef ReverseIterator<ConstCirculator> DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::ConstReverseCirculator

Definition at line 99 of file ConstRangeAdapter.h.

◆ ConstReverseIterator

template<typename TIterator , typename TFunctor , typename TReturnType >

typedef ReverseIterator<ConstIterator> DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::ConstReverseIterator

Definition at line 96 of file ConstRangeAdapter.h.

◆ Difference

template<typename TIterator , typename TFunctor , typename TReturnType >

typedef IteratorCirculatorTraits<ConstIterator>::Difference DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::Difference

Definition at line 101 of file ConstRangeAdapter.h.

Constructor & Destructor Documentation

◆ ConstRangeAdapter() [1/3]

template<typename TIterator , typename TFunctor , typename TReturnType >

DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::ConstRangeAdapter	(	const TIterator &	itb,
		const TIterator &	ite,
		const TFunctor &	aFunctor )

inline

Standard constructor from two iterators and one functor (stored as an aliasing pointer).

Parameters

itb	begin iterator.
ite	end iterator.
aFunctor	functor used to adapt on-the-fly the elements of the range

Definition at line 112 of file ConstRangeAdapter.h.

114 : myBegin(itb), myEnd(ite), myFunctor(&aFunctor), myFlagIsOwned(false) {}

DGtal::ConstRangeAdapter::myEnd

TIterator myEnd

Definition ConstRangeAdapter.h:195

DGtal::ConstRangeAdapter::myBegin

TIterator myBegin

Definition ConstRangeAdapter.h:191

DGtal::ConstRangeAdapter::myFunctor

const TFunctor * myFunctor

Definition ConstRangeAdapter.h:199

DGtal::ConstRangeAdapter::myFlagIsOwned

bool myFlagIsOwned

Definition ConstRangeAdapter.h:203

◆ ConstRangeAdapter() [2/3]

template<typename TIterator , typename TFunctor , typename TReturnType >

DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::ConstRangeAdapter	(	const TIterator &	itb,
		const TIterator &	ite,
		const TFunctor *	aFunctorPtr )

inline

Standard constructor from two iterators and one pointer on a functor (stored as an owning pointer).

Parameters

itb	begin iterator.
ite	end iterator.
aFunctorPtr	pointer on a functor used to adapt on-the-fly the elements of the range

Definition at line 124 of file ConstRangeAdapter.h.

126 : myBegin(itb), myEnd(ite), myFunctor(aFunctorPtr), myFlagIsOwned(true) {}

◆ ConstRangeAdapter() [3/3]

template<typename TIterator , typename TFunctor , typename TReturnType >

DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::ConstRangeAdapter ( const ConstRangeAdapter< TIterator, TFunctor, TReturnType > & other )

inline

Copy constructor.

Parameters

other the iterator to clone.

Definition at line 132 of file ConstRangeAdapter.h.

      : myBegin(other.myBegin), myEnd(other.myEnd), myFlagIsOwned(other.myFlagIsOwned) 
      { 
  if (myFlagIsOwned)
    myFunctor = new TFunctor( *other.myFunctor ); //owned copy
  else
    myFunctor = other.myFunctor; //copy of the alias
      }    

References DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myFlagIsOwned, and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myFunctor.

◆ ~ConstRangeAdapter()

template<typename TIterator , typename TFunctor , typename TReturnType >

DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::~ConstRangeAdapter ( )

inline

Destructor. Does nothing.

Definition at line 144 of file ConstRangeAdapter.h.

      {
        if (myFlagIsOwned) delete myFunctor; 
      }

References DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myFlagIsOwned, and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myFunctor.

Member Function Documentation

◆ begin()

template<typename TIterator , typename TFunctor , typename TReturnType >

ConstIterator DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::begin ( ) const

inline

Iterator service.

Returns: begin iterator

Definition at line 222 of file ConstRangeAdapter.h.

                                {
      return ConstIterator( myBegin, *myFunctor );
    }

References DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myBegin, and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myFunctor.

Referenced by DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::c(), DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::rend(), and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::selfDisplay().

◆ BOOST_CONCEPT_ASSERT() [1/2]

template<typename TIterator , typename TFunctor , typename TReturnType >

DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::BOOST_CONCEPT_ASSERT ( (boost_concepts::BidirectionalTraversalConcept< TIterator >) )

private

◆ BOOST_CONCEPT_ASSERT() [2/2]

template<typename TIterator , typename TFunctor , typename TReturnType >

DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::BOOST_CONCEPT_ASSERT ( (boost_concepts::ReadableIteratorConcept< TIterator >) )

private

◆ c()

template<typename TIterator , typename TFunctor , typename TReturnType >

ConstCirculator DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::c ( ) const

inline

Circulator service. Prodives a circulator such that *c() == *begin()

Returns: a circulator

See also: rc method

Definition at line 257 of file ConstRangeAdapter.h.

                              {
      return ConstCirculator( this->begin(), this->begin(), this->end() );
    }

References DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::begin(), and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::end().

Referenced by compare(), and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::rc().

◆ className()

template<typename TIterator , typename TFunctor , typename TReturnType >

std::string DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::className ( ) const

inline

Returns: the style name used for drawing this object.

Definition at line 180 of file ConstRangeAdapter.h.

    {
      return "ConstRangeAdapter";
    }

◆ end()

template<typename TIterator , typename TFunctor , typename TReturnType >

ConstIterator DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::end ( ) const

inline

Iterator service.

Returns: end iterator

Definition at line 230 of file ConstRangeAdapter.h.

                              {
      return ConstIterator( myEnd, *myFunctor );
    }

References DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myEnd, and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myFunctor.

Referenced by DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::c(), DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::rbegin(), and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::selfDisplay().

◆ isValid()

template<typename TIterator , typename TFunctor , typename TReturnType >

bool DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::isValid ( ) const

inline

Checks the validity/consistency of the object.

Returns: 'true' if the object is valid, 'false' otherwise.

Definition at line 153 of file ConstRangeAdapter.h.

153{ return true; }

◆ operator=()

template<typename TIterator , typename TFunctor , typename TReturnType >

ConstRangeAdapter & DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::operator= ( const ConstRangeAdapter< TIterator, TFunctor, TReturnType > & other )

private

Assignment.

Parameters

other the iterator to copy.

Returns: a reference on 'this'.

◆ rbegin()

template<typename TIterator , typename TFunctor , typename TReturnType >

ConstReverseIterator DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::rbegin ( ) const

inline

Iterator service.

Returns: rbegin iterator

Definition at line 238 of file ConstRangeAdapter.h.

                                        {
      return ConstReverseIterator(this->end());
    }

References DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::end().

◆ rc()

template<typename TIterator , typename TFunctor , typename TReturnType >

ConstReverseCirculator DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::rc ( ) const

inline

Circulator service. Provides a reverse circulator such that *rc() == *c() == *begin()

Returns: a reverse circulator

See also: c method; begin method

Definition at line 269 of file ConstRangeAdapter.h.

                                      {
      //implemented so that *rc() == *c()
      ConstCirculator tmp = this->c();
      ++tmp; 
      return ConstReverseCirculator( tmp );
    }

References DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::c().

◆ rend()

template<typename TIterator , typename TFunctor , typename TReturnType >

ConstReverseIterator DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::rend ( ) const

inline

Iterator service.

Returns: rend iterator

Definition at line 246 of file ConstRangeAdapter.h.

                                      {
      return ConstReverseIterator(this->begin());
    }

References DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::begin().

◆ selfDisplay()

template<typename TIterator , typename TFunctor , typename TReturnType >

void DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::selfDisplay ( std::ostream & out ) const

inline

Writes/Displays the object on an output stream.

Parameters

out	the output stream where the object is written.

Definition at line 169 of file ConstRangeAdapter.h.

    {
      out << "[ConstRangeAdapter]" << std::endl; 
      out << "\t"; 
      std::copy( this->begin(), this->end(), std::ostream_iterator<TReturnType>(out, ", ") ); 
      out << std::endl; 
    }

References DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::begin(), and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::end().

◆ size() [1/3]

template<typename TIterator , typename TFunctor , typename TReturnType >

Difference DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::size ( ) const

inline

Returns: the size of the range.

Definition at line 158 of file ConstRangeAdapter.h.

      {
        typedef typename IteratorCirculatorTraits<TIterator>::Category Category; 
        return size( myBegin, myEnd, Category() );
      }

References DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myBegin, DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myEnd, and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::size().

Referenced by DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::size().

◆ size() [2/3]

template<typename TIterator , typename TFunctor , typename TReturnType >

Difference DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::size	(	const TIterator &	itb,
		const TIterator &	ite,
		BidirectionalCategory	) const

inlineprivate

Get the size of [itb, ite)

Parameters

itb	begin iterator
ite	end iterator

Returns: the size of the range. NB: in O(ite-itb)

Definition at line 297 of file ConstRangeAdapter.h.

      {
        TIterator it = itb; 
        unsigned int d = 0;
        for ( ; it != ite; ++it, ++d)
          {}
        return d; 
      }

◆ size() [3/3]

template<typename TIterator , typename TFunctor , typename TReturnType >

Difference DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::size	(	const TIterator &	itb,
		const TIterator &	ite,
		RandomAccessCategory	) const

inlineprivate

Get the size of [itb, ite)

Parameters

itb	begin iterator
ite	end iterator

Returns: the size of the range. NB: in O(1)

Definition at line 285 of file ConstRangeAdapter.h.

      {
        return (ite-itb); 
      }

Field Documentation

◆ myBegin

template<typename TIterator , typename TFunctor , typename TReturnType >

TIterator DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myBegin

private

Begin underlying iterator

Definition at line 191 of file ConstRangeAdapter.h.

Referenced by DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::begin(), and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::size().

◆ myEnd

template<typename TIterator , typename TFunctor , typename TReturnType >

TIterator DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myEnd

private

End underlying iterator

Definition at line 195 of file ConstRangeAdapter.h.

Referenced by DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::end(), and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::size().

◆ myFlagIsOwned

template<typename TIterator , typename TFunctor , typename TReturnType >

bool DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myFlagIsOwned

private

bool equal to true if myFunctor is owned

Definition at line 203 of file ConstRangeAdapter.h.

Referenced by DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::ConstRangeAdapter(), and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::~ConstRangeAdapter().

◆ myFunctor

template<typename TIterator , typename TFunctor , typename TReturnType >

const TFunctor* DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::myFunctor

private

Pointer on the underlying functor

Definition at line 199 of file ConstRangeAdapter.h.

Referenced by DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::begin(), DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::ConstRangeAdapter(), DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::end(), and DGtal::ConstRangeAdapter< TIterator, TFunctor, TReturnType >::~ConstRangeAdapter().

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

ConstRangeAdapter.h

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ ConstCirculator

◆ ConstIterator

◆ ConstReverseCirculator

◆ ConstReverseIterator

◆ Difference

Constructor & Destructor Documentation

◆ ConstRangeAdapter() [1/3]

◆ ConstRangeAdapter() [2/3]

◆ ConstRangeAdapter() [3/3]

◆ ~ConstRangeAdapter()

Member Function Documentation

◆ begin()

◆ BOOST_CONCEPT_ASSERT() [1/2]

◆ BOOST_CONCEPT_ASSERT() [2/2]

◆ c()

◆ className()

◆ end()

◆ isValid()

◆ operator=()

◆ rbegin()

◆ rc()

◆ rend()

◆ selfDisplay()

◆ size() [1/3]

◆ size() [2/3]

◆ size() [3/3]

Field Documentation

◆ myBegin

◆ myEnd

◆ myFlagIsOwned

◆ myFunctor