ValueAccessBase< DERIVED > Class Template Reference

Common base class for access traits, providing typed Value access to planes. More...

#include <cvb/vpat.hpp>

Public Member Functions
template<class Type >
const Type &	Value (int x, int y) const noexcept
	Gets a pixel value at a given position. More...
template<class Type >
Type &	Value (int x, int y) noexcept
	Gets a settable pixel value at a given position. More...
template<class Type >
const Type &	Value (Point2D< int > position) const noexcept
	Gets a pixel value at a given position. More...
template<class Type >
Type &	Value (Point2D< int > position) noexcept
	Gets a settable pixel value at a given position. More...

Detailed Description

template<class DERIVED>
class Cvb::ValueAccessBase< DERIVED >

Common base class for access traits, providing typed Value access to planes.

Template Parameters

DERIVED

The derived class type following the CRTP pattern The DERIVED type must implement at least a const call operator with {const} void *operator(int x, int y), returning a pointer to the value at the requested position.

Member Function Documentation

Value() [1/4]

const Type & Value ( int  x, int  y  ) const

inlinenoexcept

Gets a pixel value at a given position.

Parameters

[in]	x	Horizontal pixel position.
[in]	y	Vertical pixel position.

Returns

Typed readonly reference to the image buffer.

Exceptions

Does	not throw any exception.

This method is for convenience not for performance.

Value() [2/4]

Type & Value ( int  x, int  y  )

inlinenoexcept

Gets a settable pixel value at a given position.

Parameters

[in]	x	Horizontal pixel position.
[in]	y	Vertical pixel position.

Returns

Typed writable reference to the image buffer.

Exceptions

Does	not throw any exception.

This method is for convenience not for performance.

Value() [3/4]

const Type & Value ( Point2D< int >  position ) const

inlinenoexcept

Gets a pixel value at a given position.

Parameters

[in]

position

Pixel position.

Returns

Typed read only reference to the image buffer.

Exceptions

Does	not throw any exception.

This method is for convenience not for performance.

Value() [4/4]

Type & Value ( Point2D< int >  position )

inlinenoexcept

Gets a settable pixel value at a given position.

Parameters

[in]

position

Pixel position.

Returns

Typed writable reference to the image buffer.

Exceptions

Does	not throw any exception.

This method is for convenience not for performance.