Sprout/sprout/darkroom/materials/calculate.hpp

49 lines
1.7 KiB
C++

/*=============================================================================
Copyright (c) 2011-2013 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_CALCULATE_HPP
#define SPROUT_DARKROOM_MATERIALS_CALCULATE_HPP
#include <sprout/config.hpp>
#include <sprout/type_traits/identity.hpp>
namespace sprout {
namespace darkroom {
namespace materials {
//
// calculate_result
//
template<typename Image, typename Unit>
struct calculate_result
: public sprout::identity<typename Image::result_type>
{};
template<typename Image, typename Unit>
struct calculate_result<Image const, Unit>
: public sprout::darkroom::materials::calculate_result<Image, Unit>
{};
template<typename Image, typename Unit>
struct calculate_result<Image volatile, Unit>
: public sprout::darkroom::materials::calculate_result<Image, Unit>
{};
template<typename Image, typename Unit>
struct calculate_result<Image const volatile, Unit>
: public sprout::darkroom::materials::calculate_result<Image, Unit>
{};
//
// calculate
//
template<typename Image, typename Unit>
inline SPROUT_CONSTEXPR typename sprout::darkroom::materials::calculate_result<Image, Unit>::type
calculate(Image const& image, Unit const& u, Unit const& v) {
return image(u, v);
}
} // namespace materials
} // namespace darkroom
} // namespace sprout
#endif // #ifndef SPROUT_DARKROOM_MATERIALS_CALCULATE_HPP