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LastValueFunctor< VALUETYPE > Class Template Reference |  |
Stores and returns the last value it has seen. More...
#include <vigra/inspectimage.hxx>
Public Types | |
| typedef VALUETYPE | argument_type |
| typedef VALUETYPE | result_type |
| typedef VALUETYPE | value_type |
Public Member Functions | |
| LastValueFunctor (argument_type const &initial=argument_type()) | |
| void | operator() (argument_type const &v) |
| result_type const & | operator() () const |
| void | operator= (argument_type const &v) |
| void | reset () |
Public Attributes | |
| VALUETYPE | value |
Detailed Description
template<class VALUETYPE>
class vigra::LastValueFunctor< VALUETYPE >
Stores and returns the last value it has seen.
This Functor is best used in conjunction with ArrayOfRegionStatistics to realize a look-up table.
Traits defined:
FunctorTraits::isUnaryAnalyser and FunctorTraits::isInitializer are true (VigraTrueType)
Usage:
#include <vigra/inspectimage.hxx>
Namespace: vigra
vigra::BImage img;
for(int i=0; i<256; ++i)
{
lut[i] = ...; // init look-up table
}
vigra::transformImage(srcImageRange(img), destImage(img), lut);
Member Typedef Documentation
| typedef VALUETYPE argument_type |
the functor's argument type
| typedef VALUETYPE result_type |
the functor's result type
| typedef VALUETYPE value_type |
- Deprecated:
- use argument_type and result_type
Constructor & Destructor Documentation
| LastValueFunctor | ( | argument_type const & | initial = argument_type() | ) |
default construction of value (i.e. builtin types will be set to zero)
Member Function Documentation
| void operator= | ( | argument_type const & | v | ) |
replace value
| void reset | ( | ) |
reset to initial value (the same as after default construction)
| void operator() | ( | argument_type const & | v | ) |
replace value
| result_type const& operator() | ( | ) | const |
return current value
Member Data Documentation
| VALUETYPE value |
the current value
The documentation for this class was generated from the following file:
- vigra/inspectimage.hxx