102 lines
3.7 KiB
C++
102 lines
3.7 KiB
C++
/*
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Copyright 2007-2008 Andreas Pokorny
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Use, modification and distribution are subject to the Boost Software License,
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Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt).
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*/
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/*************************************************************************************************/
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#ifndef BOOST_GIL_GRAY_ALPHA_HPP_INCLUDED
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#define BOOST_GIL_GRAY_ALPHA_HPP_INCLUDED
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////////////////////////////////////////////////////////////////////////////////////////
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/// \file
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/// \brief
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/// \author Andreas Pokorny \n
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///
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/// \date 2007-2008 \n
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///
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////////////////////////////////////////////////////////////////////////////////////////
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#include <boost/gil/gil_config.hpp>
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#include <boost/mpl/contains.hpp>
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#include <boost/gil/gray.hpp>
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#include <boost/gil/typedefs.hpp>
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namespace boost { namespace gil {
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typedef mpl::vector2<gray_color_t,alpha_t> gray_alpha_t;
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typedef layout<gray_alpha_t> gray_alpha_layout_t;
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typedef layout<gray_alpha_layout_t, mpl::vector2_c<int,1,0> > alpha_gray_layout_t;
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GIL_DEFINE_BASE_TYPEDEFS(8, alpha_gray)
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GIL_DEFINE_BASE_TYPEDEFS(8s, alpha_gray)
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GIL_DEFINE_BASE_TYPEDEFS(16, alpha_gray)
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GIL_DEFINE_BASE_TYPEDEFS(16s,alpha_gray)
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GIL_DEFINE_BASE_TYPEDEFS(32 ,alpha_gray)
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GIL_DEFINE_BASE_TYPEDEFS(32s,alpha_gray)
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GIL_DEFINE_BASE_TYPEDEFS(32f,alpha_gray)
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GIL_DEFINE_ALL_TYPEDEFS(8, gray_alpha)
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GIL_DEFINE_ALL_TYPEDEFS(8s, gray_alpha)
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GIL_DEFINE_ALL_TYPEDEFS(16, gray_alpha)
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GIL_DEFINE_ALL_TYPEDEFS(16s,gray_alpha)
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GIL_DEFINE_ALL_TYPEDEFS(32 ,gray_alpha)
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GIL_DEFINE_ALL_TYPEDEFS(32s,gray_alpha)
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GIL_DEFINE_ALL_TYPEDEFS(32f,gray_alpha)
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/// \ingroup ColorConvert
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/// \brief Gray Alpha to RGBA
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template <>
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struct default_color_converter_impl<gray_alpha_t,rgba_t> {
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template <typename P1, typename P2>
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void operator()(const P1& src, P2& dst) const {
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get_color(dst,red_t()) =
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channel_convert<typename color_element_type<P2, red_t>::type>(get_color(src,gray_color_t()));
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get_color(dst,green_t())=
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channel_convert<typename color_element_type<P2, green_t>::type>(get_color(src,gray_color_t()));
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get_color(dst,blue_t()) =
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channel_convert<typename color_element_type<P2, blue_t>::type>(get_color(src,gray_color_t()));
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get_color(dst,alpha_t()) =
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channel_convert<typename color_element_type<P2, alpha_t>::type>(get_color(src,alpha_t()));
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}
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};
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template <>
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struct default_color_converter_impl<gray_alpha_t,rgb_t> {
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template <typename P1, typename P2>
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void operator()(const P1& src, P2& dst) const {
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get_color(dst,red_t()) =
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channel_convert<typename color_element_type<P2, red_t>::type>(
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channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) )
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);
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get_color(dst,green_t()) =
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channel_convert<typename color_element_type<P2, green_t>::type>(
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channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) )
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);
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get_color(dst,blue_t()) =
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channel_convert<typename color_element_type<P2, blue_t>::type>(
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channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) )
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);
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}
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};
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template <>
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struct default_color_converter_impl<gray_alpha_t,gray_t> {
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template <typename P1, typename P2>
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void operator()(const P1& src, P2& dst) const {
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get_color(dst,gray_color_t()) =
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channel_convert<typename color_element_type<P2, gray_color_t>::type>(
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channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) )
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);
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}
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};
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} // gil
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} // boost
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#endif // BOOST_GIL_GRAY_ALPHA_HPP_INCLUDED
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