Sprout/sprout/darkroom/cameras/calculate.hpp
2014-01-08 16:48:12 +09:00

49 lines
1.8 KiB
C++

/*=============================================================================
Copyright (c) 2011-2014 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_CAMERAS_CALCULATE_HPP
#define SPROUT_DARKROOM_CAMERAS_CALCULATE_HPP
#include <sprout/config.hpp>
#include <sprout/type_traits/identity.hpp>
namespace sprout {
namespace darkroom {
namespace cameras {
//
// calculate_result
//
template<typename Camera, typename Unit2D>
struct calculate_result
: public sprout::identity<typename Camera::ray_type>
{};
template<typename Camera, typename Unit2D>
struct calculate_result<Camera const, Unit2D>
: public sprout::darkroom::cameras::calculate_result<Camera, Unit2D>
{};
template<typename Camera, typename Unit2D>
struct calculate_result<Camera volatile, Unit2D>
: public sprout::darkroom::cameras::calculate_result<Camera, Unit2D>
{};
template<typename Camera, typename Unit2D>
struct calculate_result<Camera const volatile, Unit2D>
: public sprout::darkroom::cameras::calculate_result<Camera, Unit2D>
{};
//
// calculate
//
template<typename Camera, typename Unit2D>
inline SPROUT_CONSTEXPR typename sprout::darkroom::cameras::calculate_result<Camera, Unit2D>::type
calculate(Camera const& camera, Unit2D const& x, Unit2D const& y, Unit2D const& width, Unit2D const& height) {
return camera(x, y, width, height);
}
} // namespace cameras
} // namespace darkroom
} // namespace sprout
#endif // #ifndef SPROUT_DARKROOM_CAMERAS_CALCULATE_HPP