nth_channel_deref_fn Struct Template Reference

#include <image_view_factory.hpp>

List of all members.

Detailed Description

template<typename SrcP>
struct boost::gil::detail::nth_channel_deref_fn< SrcP >

Function object that returns a grayscale reference of the N-th channel of a given reference. Models: PixelDereferenceAdaptorConcept.

If the input is a pixel value or constant reference, the function object is immutable. Otherwise it is mutable (and returns non-const reference to the n-th channel).

Public Types

typedef nth_channel_deref_fn<
const_ref_t > 
typedef pixel_value_type<
channel_t, gray_layout_t
typedef pixel_reference_type<
channel_t, gray_layout_t,
false, false >::type 
typedef SrcP argument_type
typedef mpl::if_c< is_mutable,
ref_t, value_type >::type 
typedef reference result_type

Public Member Functions

 BOOST_STATIC_CONSTANT (bool, is_mutable=pixel_is_reference< SrcP >::value &&pixel_reference_is_mutable< SrcP >::value)
 nth_channel_deref_fn (int n=0)
template<typename P>
 nth_channel_deref_fn (const nth_channel_deref_fn< P > &d)
result_type operator() (argument_type srcP) const

Public Attributes

int _n

The documentation for this struct was generated from the following file:
Generated on Thu Nov 8 21:53:24 2007 for Generic Image Library by  doxygen 1.4.4