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RandomAccessNDLocatorConcept< Loc > Struct Template Reference

N-dimensional locator over immutable values. More...

#include <gil_concept.hpp>

Public Member Functions

void constraints ()

Public Attributes

Loc loc

Detailed Description

template<typename Loc>
struct boost::gil::RandomAccessNDLocatorConcept< Loc >

N-dimensional locator over immutable values.

concept RandomAccessNDLocatorConcept<Regular Loc> {
typename value_type; // value over which the locator navigates
typename reference; // result of dereferencing
typename difference_type; where PointNDConcept<difference_type>; // return value of operator-.
typename const_t; // same as Loc, but operating over immutable values
typename cached_location_t; // type to store relative location (for efficient repeated access)
typename point_t = difference_type;
static const size_t num_dimensions; // dimensionality of the locator
where num_dimensions = point_t::num_dimensions;
// The difference_type and iterator type along each dimension. The iterators may only differ in
// difference_type. Their value_type must be the same as Loc::value_type
template <size_t D> struct axis {
typename coord_t = point_t::axis<D>::coord_t;
typename iterator; where RandomAccessTraversalConcept<iterator>; // iterator along D-th axis.
where iterator::value_type == value_type;
// Defines the type of a locator similar to this type, except it invokes Deref upon dereferencing
template <PixelDereferenceAdaptorConcept Deref> struct add_deref {
typename type; where RandomAccessNDLocatorConcept<type>;
static type make(const Loc& loc, const Deref& deref);
Loc& operator+=(Loc&, const difference_type&);
Loc& operator-=(Loc&, const difference_type&);
Loc operator+(const Loc&, const difference_type&);
Loc operator-(const Loc&, const difference_type&);
reference operator*(const Loc&);
reference operator[](const Loc&, const difference_type&);
// Storing relative location for faster repeated access and accessing it
cached_location_t Loc::cache_location(const difference_type&) const;
reference operator[](const Loc&,const cached_location_t&);
// Accessing iterators along a given dimension at the current location or at a given offset
template <size_t D> axis<D>::iterator& Loc::axis_iterator();
template <size_t D> axis<D>::iterator const& Loc::axis_iterator() const;
template <size_t D> axis<D>::iterator Loc::axis_iterator(const difference_type&) const;

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