DGtal::concepts::CSegment< T > Struct Template Reference

Aim: Defines the concept describing a segment, ie. a valid and not empty range. More...

#include <DGtal/geometry/curves/CSegment.h>

Inheritance diagram for DGtal::concepts::CSegment< T >:

Public Types
typedef T::ConstIterator	ConstIterator

Public Member Functions
	BOOST_CONCEPT_USAGE (CSegment)

Private Attributes
T	myX
ConstIterator	it

Detailed Description

template<typename T>
struct DGtal::concepts::CSegment< T >

Aim: Defines the concept describing a segment, ie. a valid and not empty range.

Description of concept 'CSegment'

Refinement of boost::DefaultConstructible<T>, boost::CopyConstructible<T>, boost::Assignable<T>, boost::EqualityComparable<T>

Associated types

• ConstIterator, the type used to iterate over the elements of the segment, a model of bidirectional iterator

Notation

• X : A type that is a model of CSegment
• x, y : object of type X

Valid expressions and semantics

Name	Expression	Type requirements	Return type	Precondition	Semantics	Post condition	Complexity
begin method	x.begin()		ConstIterator		provides an iterator on the first element of the segment		O(1)
end method	x.end()		ConstIterator		past-the-end value		O(1)

Invariants

The range [x.begin(),x.end()) is valid (x.end() is reachable from x.begin()) and not empty (x.begin() != x.end()).

Models

Notes

A class of segments \( \Sigma_P \) is a set of segments such that for each segment of the set, a given predicate \( P \) is true: \( \forall s \in \Sigma_P, P(s) = \textrm{true} \).

Segment computers, which refines CSegment, are segment that can control their own extension so that a given predicate remains true.

Template Parameters

T	the type that should be a model of CSegment.

Definition at line 101 of file CSegment.h.

Member Typedef Documentation

ConstIterator

template<typename T >

typedef T::ConstIterator DGtal::concepts::CSegment< T >::ConstIterator

Definition at line 106 of file CSegment.h.

Member Function Documentation

BOOST_CONCEPT_USAGE()

template<typename T >

DGtal::concepts::CSegment< T >::BOOST_CONCEPT_USAGE ( CSegment< T >  )

inline

Definition at line 111 of file CSegment.h.

      {
        concepts::ConceptUtils::sameType( it, myX.begin() );
        concepts::ConceptUtils::sameType( it, myX.end() );      
      }

References DGtal::concepts::CSegment< T >::it, DGtal::concepts::CSegment< T >::myX, and DGtal::concepts::ConceptUtils::sameType().

Field Documentation

it

template<typename T >

ConstIterator DGtal::concepts::CSegment< T >::it

private

Definition at line 119 of file CSegment.h.

Referenced by DGtal::concepts::CSegment< T >::BOOST_CONCEPT_USAGE().

myX

template<typename T >

T DGtal::concepts::CSegment< T >::myX

private

Definition at line 118 of file CSegment.h.

Referenced by DGtal::concepts::CSegment< T >::BOOST_CONCEPT_USAGE().

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

• CSegment.h