Sprout/sprout/darkroom/materials/uniform.hpp
2016-02-25 18:48:28 +09:00

60 lines
1.8 KiB
C++

/*=============================================================================
Copyright (c) 2011-2016 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_DARKROOM_MATERIALS_UNIFORM_HPP
#define SPROUT_DARKROOM_MATERIALS_UNIFORM_HPP
#include <sprout/config.hpp>
#include <sprout/tuple/tuple.hpp>
namespace sprout {
namespace darkroom {
namespace materials {
//
// uniform_element
//
template<typename Element>
class uniform_element {
public:
typedef Element result_type;
private:
result_type elem_;
public:
explicit SPROUT_CONSTEXPR uniform_element(result_type const& elem)
: elem_(elem)
{}
template<typename Unit>
SPROUT_CONSTEXPR result_type
operator()(Unit const&, Unit const&) const {
return elem_;
}
};
//
// make_uniform
//
template<typename Element>
inline SPROUT_CONSTEXPR sprout::darkroom::materials::uniform_element<Element>
make_uniform(Element const& elem) {
return sprout::darkroom::materials::uniform_element<Element>(elem);
}
//
// make_uniform_material_image
//
template<typename... Elements>
inline SPROUT_CONSTEXPR sprout::tuples::tuple<
sprout::darkroom::materials::uniform_element<Elements>...
>
make_uniform_material_image(Elements const&... elems) {
return sprout::tuples::make_tuple(
sprout::darkroom::materials::make_uniform(elems)...
);
}
} // namespace materials
} // namespace darkroom
} // namespace sprout
#endif // #ifndef SPROUT_DARKROOM_MATERIALS_UNIFORM_HPP