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StandardConstAccessor Class Template Reference | ![]() |
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Encapsulate read access to the values an iterator points to. More...
#include "vigra/accessor.hxx"
Public Methods | |
template<class ITERATOR> VALUETYPE const & | operator() (ITERATOR const &i) const |
template<class ITERATOR, class DIFFERENCE> VALUETYPE const & | operator() (ITERATOR const &i, DIFFERENCE const &diff) const |
Detailed Description |
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
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read the data item at an offset (can be 1D or 2D or higher order difference). |
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read the current data item |
© Ullrich Köthe (koethe@informatik.uni-hamburg.de) |
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