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RowIterator [Image Iterator Adapters] |
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Iterator adapter to linearly access row. More...
#include <vigra/imageiteratoradapter.hxx>
Public Types | |
typedef IMAGE_ITERATOR | Adaptee |
typedef IMAGE_ITERATOR::difference_type::MoveY | difference_type |
typedef IMAGE_ITERATOR::index_reference | index_reference |
typedef std::random_access_iterator_tag | iterator_category |
typedef IMAGE_ITERATOR::value_type | PixelType |
typedef IMAGE_ITERATOR::pointer | pointer |
typedef IMAGE_ITERATOR::reference | reference |
typedef IMAGE_ITERATOR::value_type | value_type |
Public Member Functions | |
RowIterator & | operator= (IMAGE_ITERATOR const &i) |
RowIterator & | operator= (RowIterator const &i) |
RowIterator (IMAGE_ITERATOR const &i) | |
Methods | |
Adaptee & | adaptee () const |
bool | operator!= (RowIterator const &c) const |
reference | operator* () const |
RowIterator | operator+ (int d) const |
int | operator- (RowIterator const &c) const |
RowIterator | operator- (int d) const |
pointer | operator-> () const |
bool | operator< (RowIterator const &c) const |
bool | operator== (RowIterator const &c) const |
index_reference | operator[] (int d) const |
Navigation | |
RowIterator | operator++ (int) |
RowIterator & | operator++ () |
RowIterator & | operator+= (int d) |
RowIterator | operator-- (int) |
RowIterator & | operator-- () |
RowIterator & | operator-= (int d) |
This iterator may be initialized from a standard ImageIterator, a MultibandImageIterator and so on. It gives you STL-compatible (random access iterator) access to one row of the image. If the underlying iterator is a const iterator, the row iterator will also be const (i.e. doesn't allow to change the values it points to). The iterator gets associated with the accessor of the base iterator.
Note that image iterators usually have a member rowIterator()
which returns a row iterator optimized for that particular image class. RowIterator is only necessary if this 'native' row iterator is not usable in a particular situation or is not provided.
#include <vigra/imageiteratoradapter.hxx>
Namespace: vigra
typedef IMAGE_ITERATOR Adaptee |
the type of the adapted iterator
typedef IMAGE_ITERATOR::difference_type::MoveY difference_type |
the iterator's difference type (argument type of iter[diff]
)
typedef IMAGE_ITERATOR::index_reference index_reference |
the iterator's index reference type (return type of iter[n]
)
typedef std::random_access_iterator_tag iterator_category |
the iterator tag (random access iterator)
typedef IMAGE_ITERATOR::value_type PixelType |
the iterator's value type
typedef IMAGE_ITERATOR::pointer pointer |
the iterator's pointer type (return type of iter.operator->()
)
typedef IMAGE_ITERATOR::reference reference |
the iterator's reference type (return type of *iter
)
typedef IMAGE_ITERATOR::value_type value_type |
the iterator's value type
RowIterator | ( | IMAGE_ITERATOR const & | i | ) |
Construct from an the image iterator to be adapted.
Adaptee& adaptee | ( | ) | const |
Get a reference to the adapted iterator
bool operator!= | ( | RowIterator< IMAGE_ITERATOR > const & | c | ) | const |
Inequality.
reference operator* | ( | ) | const |
Access current pixel.
RowIterator operator+ | ( | int | d | ) | const |
Construct iterator at a distance.
int operator- | ( | RowIterator< IMAGE_ITERATOR > const & | c | ) | const |
Calculate distance.
RowIterator operator- | ( | int | d | ) | const |
Construct iterator at a distance.
pointer operator-> | ( | ) | const |
Call member function of current pixel.
bool operator< | ( | RowIterator< IMAGE_ITERATOR > const & | c | ) | const |
Smaller than.
RowIterator& operator= | ( | IMAGE_ITERATOR const & | i | ) |
Assign a new base iterator.
RowIterator& operator= | ( | RowIterator< IMAGE_ITERATOR > const & | i | ) |
Assignment.
bool operator== | ( | RowIterator< IMAGE_ITERATOR > const & | c | ) | const |
Equality.
index_reference operator[] | ( | int | d | ) | const |
Access pixel at distance d.
© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de) |
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