#include <otbPixelComponentIterator.h>

Collaboration diagram for otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >:

Public Types
C++ std typedefs
using	difference_type = std::ptrdiff_t

using	value_type = std::conditional_t< is_mutable, InternalPixelType, InternalPixelType const >

using	pointer = value_type *

using	reference = value_type &

using	const_reference = value_type const &

using	iterator_category = std::forward_iterator_tag

Public Member Functions
Constructions & Destruction
This class follows the rule of 0/5
	PixelComponentIterator ()=default

	~PixelComponentIterator ()=default

	PixelComponentIterator (PixelComponentIterator const &)=default

	PixelComponentIterator (PixelComponentIterator &&)=default

PixelComponentIterator &	operator= (PixelComponentIterator const &)=default

PixelComponentIterator &	operator= (PixelComponentIterator &&)=default

template<bool IsConst_ = is_const, class = std::enable_if_t<IsConst_>>
	PixelComponentIterator (PixelComponentIterator< PixelType, MutableTag > const &rhs)

template<bool IsConst_ = is_const, class = std::enable_if_t<IsConst_>>
	PixelComponentIterator (PixelComponentIterator< PixelType, MutableTag > &&rhs)

	PixelComponentIterator (PixelType &pixel, std::vcl_size_t component=0)

ITK Constants and Typedefs
using	PixelType = TPixel

using	InternalPixelType = std::remove_reference_t< decltype(std::declval< PixelType >()[0])>

using	Self = PixelComponentIterator

using	ConstMut_IntPixelType = std::conditional_t< is_const, std::add_const_t< InternalPixelType >, InternalPixelType >

using	SubPixelComponentIteratorType = PixelComponentIterator< ConstMut_IntPixelType, ConstOrMutable >

using	ComponentType = typename SubPixelComponentIteratorType::ComponentType

static constexpr bool	is_const = std::is_same<ConstOrMutable, ConstTag>::value

static constexpr bool	is_mutable = std::is_same<ConstOrMutable, MutableTag>::value

static constexpr bool	is_scalar_array = std::is_arithmetic<InternalPixelType>::value

	itkTypeMacroNoParent (PixelComponentIterator)

Comparison
Comparison operators. They are all hidden friends. As a consequence, they need to be defined within the class definition.
bool	is_at_end () const noexcept

bool	operator== (PixelComponentIterator const &lhs, PixelComponentIterator const &rhs) noexcept

bool	operator!= (PixelComponentIterator const &lhs, PixelComponentIterator const &rhs) noexcept

bool	operator<= (PixelComponentIterator const &lhs, PixelComponentIterator const &rhs) noexcept

bool	operator< (PixelComponentIterator const &lhs, PixelComponentIterator const &rhs) noexcept

bool	operator>= (PixelComponentIterator const &lhs, PixelComponentIterator const &rhs) noexcept

bool	operator> (PixelComponentIterator const &lhs, PixelComponentIterator const &rhs) noexcept

Iterator Interface
NotNull< PixelType * >	m_pixel

std::vcl_size_t	m_component

SubPixelComponentIteratorType	m_subiter

Self &	operator++ ()

Self	operator++ (int)

decltype(auto)	operator* ()

decltype(auto)	operator* () const

auto	size () const

template<bool IsMutable_ = is_mutable, class = std::enable_if_t<IsMutable_>>
decltype(auto)	get_current_pixel ()

decltype(auto)	get_current_pixel () const

Detailed Description

template<typename TPixel, typename ConstOrMutable>
class otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >

Component Iterator specialization for array pixel types. Conversion constructor. Converts from mutable to const iterator

See also: https://quuxplusone.github.io/blog/2018/12/01/const-iterator-antipatterns/

Definition at line 69 of file otbPixelComponentIterator.h.

Member Typedef Documentation

◆ ComponentType

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::ComponentType = typename SubPixelComponentIteratorType::ComponentType

Pixel Type.

Definition at line 90 of file otbPixelComponentIterator.h.

◆ const_reference

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::const_reference = value_type const&

Definition at line 102 of file otbPixelComponentIterator.h.

◆ ConstMut_IntPixelType

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::ConstMut_IntPixelType = std::conditional_t<is_const, std::add_const_t<InternalPixelType>, InternalPixelType>

Pixel Type.

Definition at line 88 of file otbPixelComponentIterator.h.

◆ difference_type

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::difference_type = std::ptrdiff_t

Definition at line 98 of file otbPixelComponentIterator.h.

◆ InternalPixelType

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::InternalPixelType = std::remove_reference_t<decltype(std::declval<PixelType>()[0])>

Pixel Type.

Definition at line 84 of file otbPixelComponentIterator.h.

◆ iterator_category

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::iterator_category = std::forward_iterator_tag

Definition at line 103 of file otbPixelComponentIterator.h.

◆ PixelType

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::PixelType = TPixel

Pixel Type.

Definition at line 83 of file otbPixelComponentIterator.h.

◆ pointer

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::pointer = value_type *

Definition at line 100 of file otbPixelComponentIterator.h.

◆ reference

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::reference = value_type &

Definition at line 101 of file otbPixelComponentIterator.h.

◆ Self

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::Self = PixelComponentIterator

Pixel Type.

Definition at line 87 of file otbPixelComponentIterator.h.

◆ SubPixelComponentIteratorType

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::SubPixelComponentIteratorType = PixelComponentIterator<ConstMut_IntPixelType, ConstOrMutable>

Pixel Type.

Definition at line 89 of file otbPixelComponentIterator.h.

◆ value_type

template<typename TPixel , typename ConstOrMutable >

using otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::value_type = std::conditional_t<is_mutable, InternalPixelType, InternalPixelType const>

Definition at line 99 of file otbPixelComponentIterator.h.

Constructor & Destructor Documentation

◆ PixelComponentIterator() [1/6]

template<typename TPixel , typename ConstOrMutable >

otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::PixelComponentIterator ( )

default

Conversion constructor. Converts from mutable to const iterator

See also: https://quuxplusone.github.io/blog/2018/12/01/const-iterator-antipatterns/

◆ ~PixelComponentIterator()

template<typename TPixel , typename ConstOrMutable >

otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::~PixelComponentIterator ( )

default

Conversion constructor. Converts from mutable to const iterator

See also: https://quuxplusone.github.io/blog/2018/12/01/const-iterator-antipatterns/

◆ PixelComponentIterator() [2/6]

template<typename TPixel , typename ConstOrMutable >

otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::PixelComponentIterator ( PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const & )

default

Conversion constructor. Converts from mutable to const iterator

See also: https://quuxplusone.github.io/blog/2018/12/01/const-iterator-antipatterns/

◆ PixelComponentIterator() [3/6]

template<typename TPixel , typename ConstOrMutable >

otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::PixelComponentIterator ( PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > && )

default

Conversion constructor. Converts from mutable to const iterator

See also: https://quuxplusone.github.io/blog/2018/12/01/const-iterator-antipatterns/

◆ PixelComponentIterator() [4/6]

template<typename TPixel , typename ConstOrMutable >

template<bool IsConst_ = is_const, class = std::enable_if_t<IsConst_>>

otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::PixelComponentIterator ( PixelComponentIterator< PixelType, MutableTag > const & rhs )

inline

Conversion constructor. Converts from mutable to const iterator

See also: https://quuxplusone.github.io/blog/2018/12/01/const-iterator-antipatterns/

Definition at line 126 of file otbPixelComponentIterator.h.

◆ PixelComponentIterator() [5/6]

template<typename TPixel , typename ConstOrMutable >

template<bool IsConst_ = is_const, class = std::enable_if_t<IsConst_>>

otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::PixelComponentIterator ( PixelComponentIterator< PixelType, MutableTag > && rhs )

inline

Conversion move constructor. Move converts from mutable to const iterator

See also: https://quuxplusone.github.io/blog/2018/12/01/const-iterator-antipatterns/

Definition at line 137 of file otbPixelComponentIterator.h.

◆ PixelComponentIterator() [6/6]

template<typename TPixel , typename ConstOrMutable >

otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::PixelComponentIterator	(	PixelType &	pixel,
		std::vcl_size_t	component = `0`
	)

inlineexplicit

Init Constructor. Constructs a PixelComponentIterator from a pixel

Parameters

[in,out] pixel Pixel over which components are iterated

Definition at line 149 of file otbPixelComponentIterator.h.

Member Function Documentation

◆ get_current_pixel() [1/2]

template<typename TPixel , typename ConstOrMutable >

template<bool IsMutable_ = is_mutable, class = std::enable_if_t<IsMutable_>>

decltype(auto) otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::get_current_pixel ( )

inlineprivate

Iterator to subcomponents. In array cases, components can be array-like pixels like std::complex<>

Definition at line 278 of file otbPixelComponentIterator.h.

◆ get_current_pixel() [2/2]

template<typename TPixel , typename ConstOrMutable >

decltype(auto) otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::get_current_pixel ( ) const

inlineprivate

Iterator to subcomponents. In array cases, components can be array-like pixels like std::complex<>

Definition at line 283 of file otbPixelComponentIterator.h.

◆ is_at_end()

template<typename TPixel , typename ConstOrMutable >

bool otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::is_at_end ( ) const

inlinenoexcept

Definition at line 167 of file otbPixelComponentIterator.h.

◆ itkTypeMacroNoParent()

template<typename TPixel , typename ConstOrMutable >

otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::itkTypeMacroNoParent ( PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > )

Run-time type information (and related methods).

◆ operator*() [1/2]

template<typename TPixel , typename ConstOrMutable >

decltype(auto) otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::operator* ( )

inline

Iterator to subcomponents. In array cases, components can be array-like pixels like std::complex<>

Definition at line 241 of file otbPixelComponentIterator.h.

◆ operator*() [2/2]

template<typename TPixel , typename ConstOrMutable >

decltype(auto) otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::operator* ( ) const

inline

Iterator to subcomponents. In array cases, components can be array-like pixels like std::complex<>

Definition at line 254 of file otbPixelComponentIterator.h.

◆ operator++() [1/2]

template<typename TPixel , typename ConstOrMutable >

Self& otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::operator++ ( )

inline

Pre-increments the iterator.

Precondition: ! is_at_end()

Definition at line 210 of file otbPixelComponentIterator.h.

◆ operator++() [2/2]

template<typename TPixel , typename ConstOrMutable >

Self otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::operator++ ( int )

inline

Post-increments the iterator.

Definition at line 233 of file otbPixelComponentIterator.h.

◆ operator=() [1/2]

template<typename TPixel , typename ConstOrMutable >

PixelComponentIterator& otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::operator= ( PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > && )

default

Conversion constructor. Converts from mutable to const iterator

See also: https://quuxplusone.github.io/blog/2018/12/01/const-iterator-antipatterns/

◆ operator=() [2/2]

template<typename TPixel , typename ConstOrMutable >

PixelComponentIterator& otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::operator= ( PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const & )

default

Conversion constructor. Converts from mutable to const iterator

See also: https://quuxplusone.github.io/blog/2018/12/01/const-iterator-antipatterns/

◆ size()

template<typename TPixel , typename ConstOrMutable >

auto otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::size ( ) const

inline

Iterator to subcomponents. In array cases, components can be array-like pixels like std::complex<>

Definition at line 270 of file otbPixelComponentIterator.h.

References otb::mpl::GetNumberOfComponents().

Friends And Related Function Documentation

◆ operator!=

template<typename TPixel , typename ConstOrMutable >

bool operator!=	(	PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	lhs,
		PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	rhs
	)

friend

Definition at line 179 of file otbPixelComponentIterator.h.

◆ operator<

template<typename TPixel , typename ConstOrMutable >

bool operator<	(	PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	lhs,
		PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	rhs
	)

friend

Definition at line 191 of file otbPixelComponentIterator.h.

◆ operator<=

template<typename TPixel , typename ConstOrMutable >

bool operator<=	(	PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	lhs,
		PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	rhs
	)

friend

Definition at line 182 of file otbPixelComponentIterator.h.

◆ operator==

template<typename TPixel , typename ConstOrMutable >

bool operator==	(	PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	lhs,
		PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	rhs
	)

friend

Definition at line 172 of file otbPixelComponentIterator.h.

◆ operator>

template<typename TPixel , typename ConstOrMutable >

bool operator>	(	PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	lhs,
		PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	rhs
	)

friend

Definition at line 200 of file otbPixelComponentIterator.h.

◆ operator>=

template<typename TPixel , typename ConstOrMutable >

bool operator>=	(	PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	lhs,
		PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > > const &	rhs
	)

friend

Definition at line 198 of file otbPixelComponentIterator.h.

Member Data Documentation

◆ is_const

template<typename TPixel , typename ConstOrMutable >

constexpr bool otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::is_const = std::is_same<ConstOrMutable, ConstTag>::value

staticconstexpr

Pixel Type.

Definition at line 79 of file otbPixelComponentIterator.h.

◆ is_mutable

template<typename TPixel , typename ConstOrMutable >

constexpr bool otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::is_mutable = std::is_same<ConstOrMutable, MutableTag>::value

staticconstexpr

Pixel Type.

Definition at line 80 of file otbPixelComponentIterator.h.

◆ is_scalar_array

template<typename TPixel , typename ConstOrMutable >

constexpr bool otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::is_scalar_array = std::is_arithmetic<InternalPixelType>::value

staticconstexpr

Pixel Type.

Definition at line 85 of file otbPixelComponentIterator.h.

◆ m_component

template<typename TPixel , typename ConstOrMutable >

std::vcl_size_t otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::m_component

private

Iterator to subcomponents. In array cases, components can be array-like pixels like std::complex<>

Definition at line 289 of file otbPixelComponentIterator.h.

◆ m_pixel

template<typename TPixel , typename ConstOrMutable >

NotNull<PixelType*> otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::m_pixel

private

Iterator to subcomponents. In array cases, components can be array-like pixels like std::complex<>

Definition at line 288 of file otbPixelComponentIterator.h.

◆ m_subiter

template<typename TPixel , typename ConstOrMutable >

SubPixelComponentIteratorType otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >::m_subiter

private

Iterator to subcomponents. In array cases, components can be array-like pixels like std::complex<>

Definition at line 294 of file otbPixelComponentIterator.h.

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

otbPixelComponentIterator.h

Public Types

Public Member Functions

ITK Constants and Typedefs

Comparison

Iterator Interface

Detailed Description

template<typename TPixel, typename ConstOrMutable> class otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >

Member Typedef Documentation

◆ ComponentType

◆ const_reference

◆ ConstMut_IntPixelType

◆ difference_type

◆ InternalPixelType

◆ iterator_category

◆ PixelType

◆ pointer

◆ reference

◆ Self

◆ SubPixelComponentIteratorType

◆ value_type

Constructor & Destructor Documentation

◆ PixelComponentIterator() [1/6]

◆ ~PixelComponentIterator()

◆ PixelComponentIterator() [2/6]

◆ PixelComponentIterator() [3/6]

◆ PixelComponentIterator() [4/6]

◆ PixelComponentIterator() [5/6]

◆ PixelComponentIterator() [6/6]

Member Function Documentation

◆ get_current_pixel() [1/2]

◆ get_current_pixel() [2/2]

◆ is_at_end()

◆ itkTypeMacroNoParent()

◆ operator*() [1/2]

◆ operator*() [2/2]

◆ operator++() [1/2]

◆ operator++() [2/2]

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ size()

Friends And Related Function Documentation

◆ operator!=

◆ operator<

◆ operator<=

◆ operator==

◆ operator>

◆ operator>=

Member Data Documentation

◆ is_const

◆ is_mutable

◆ is_scalar_array

◆ m_component

◆ m_pixel

◆ m_subiter

template<typename TPixel, typename ConstOrMutable>
class otb::internals::PixelComponentIterator< TPixel, ConstOrMutable, typename std::enable_if_t< mpl::is_array_v< std::decay_t< TPixel > > > >