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StandardConstAccessor< VALUETYPE > Class Template Reference
[Data Accessors]

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

#include <vigra/accessor.hxx>

List of all members.

Public Member Functions

template<class ITERATOR , class DIFFERENCE >
VALUETYPE const & operator() (ITERATOR const &i, DIFFERENCE const &diff) const
template<class ITERATOR >
VALUETYPE const & operator() (ITERATOR const &i) 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,
DIFFERENCE 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:

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de)
Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany

html generated using doxygen and Python
vigra 1.8.0 (20 Sep 2011)