StandardConstAccessor< VALUETYPE > Class Template Reference

Encapsulate read access to the values an iterator points to. More...

#include <vigra/accessor.hxx>

Public Member Functions
template<class ITERATOR >
VALUETYPE const &	operator() (ITERATOR const &i) const
template<class ITERATOR , class OFFSET >
VALUETYPE const &	operator() (ITERATOR const &i, OFFSET const &diff) const

Detailed Description

template<class VALUETYPE>
class vigra::StandardConstAccessor< VALUETYPE >

Encapsulate read access to the values an iterator points to.

StandardConstAccessor is a trivial accessor that simply encapsulates the iterator's operator*() and operator[]() in its read functions. It passes its arguments by reference. If the iterator returns its items by value (such as vigra::CoordinateIterator), you must use StandardConstValueAccessor instead of StandardConstAccessor. Both accessors also have different optimization properties – StandardConstAccessor is usually faster for compound pixel types, while StandardConstValueAccessor is faster for the built-in types.

#include <vigra/accessor.hxx>
Namespace: vigra

Member Function Documentation

VALUETYPE const& operator()

(

ITERATOR const &

i

)

const

read the current data item

VALUETYPE const& operator()	(	ITERATOR const &	i,
		OFFSET const &	diff
	)		const

read the data item at an offset (can be 1D or 2D or higher order difference).

---

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

• vigra/accessor.hxx