ImFusion::Utils::LinearIterator< T > Class Template Reference

#include <ImFusion/Base/Utils/Iterators.h>

Typed convenience iterator for quick integration into custom containers, especially if traversal requires on-the-fly evaluations. More...

Detailed Description

template<typename T>
class ImFusion::Utils::LinearIterator< T >

Typed convenience iterator for quick integration into custom containers, especially if traversal requires on-the-fly evaluations.

Note that operator* only returns T and not T&. For the same reason, there is no operator->. This supports pure rvalue expressions on regular dereferencing if you choose non-reference types for T.

For instance, TrackingSequence::matrix(int index) computes the matrix product registration*m_matrix[i]*calibration, so there is no container for direct traversal. Hence, a naive implementation of TrackingSequence::begin() and TrackingSequence::end() could look like this:

Utils::LinearIterator<mat4> TrackingSequence::begin() const
{
    return Utils::LinearIterator<mat4>(0, [this](int i){ return matrix(i); });
}

This allows:

TrackingSequence ts;
for(mat4 m : ts)
    LOG_INFO("Matrix " << m);

Public Types
using	iterator_category = std::random_access_iterator_tag
using	value_type = T
using	difference_type = ptrdiff_t
using	pointer = T*
using	reference = T&
using	LinIt = LinearIterator<T>

Public Member Functions
	LinearIterator (int pos, std::function< T(int)> func)
	LinearIterator (const LinIt &)=default
int	index () const
LinIt &	operator= (const LinIt &)=default
T	operator* () const
LinIt &	operator++ ()
LinIt	operator++ (int)
LinIt &	operator-- ()
LinIt	operator-- (int)
LinIt &	operator+= (int rhs)
LinIt &	operator-= (int rhs)
LinIt	operator+ (const LinIt &rhs)
LinIt	operator+ (int rhs)
std::ptrdiff_t	operator- (const LinIt &rhs)
bool	operator== (const LinIt &rhs)
bool	operator!= (const LinIt &rhs)

Protected Attributes
int	m_pos
std::function< T(int)>	m_func

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

• ImFusion/Base/Utils/Iterators.h