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sprout/darkroom/* 追加

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bolero-MURAKAMI 2011-11-26 15:20:35 +09:00
parent 1c898f8b93
commit 212e9ea652
27 changed files with 1692 additions and 4 deletions
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63
sprout/darkroom/rays/ray.hpp Normal file
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#ifndef SPROUT_DARKROOM_RAYS_RAY_HPP
#define SPROUT_DARKROOM_RAYS_RAY_HPP
#include <sprout/config.hpp>
#include <sprout/tuple/tuple.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/darkroom/access/access.hpp>
#include <sprout/darkroom/coords/vector.hpp>
namespace sprout {
namespace darkroom {
namespace rays {
//
// position
// direction
//
template<typename T>
SPROUT_CONSTEXPR auto position(
T&& t
) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(sprout::darkroom::access::get<0>(sprout::forward<T>(t))))
-> decltype(sprout::darkroom::access::get<0>(sprout::forward<T>(t)))
{
return sprout::darkroom::access::get<0>(sprout::forward<T>(t));
}
template<typename T>
SPROUT_CONSTEXPR auto direction(
T&& t
) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(sprout::darkroom::access::get<1>(sprout::forward<T>(t))))
-> decltype(sprout::darkroom::access::get<1>(sprout::forward<T>(t)))
{
return sprout::darkroom::access::get<1>(sprout::forward<T>(t));
}
//
// make_ray
//
template<typename Position, typename Direction>
SPROUT_CONSTEXPR sprout::tuples::tuple<Position, Direction>
make_ray(Position const& pos, Direction const& dir) {
return sprout::tuples::make_tuple(pos, dir);
}
//
// ray
//
typedef sprout::tuples::tuple<sprout::darkroom::coords::vector3d, sprout::darkroom::coords::vector3d> ray;
//
// point_of_intersection
//
template<typename Ray, typename Distance>
SPROUT_CONSTEXPR inline typename sprout::darkroom::access::unit<Ray>::type
point_of_intersection(Ray const& ray, Distance const& dist) {
return sprout::darkroom::coords::add(
sprout::darkroom::rays::position(ray),
sprout::darkroom::coords::scale(sprout::darkroom::rays::direction(ray), dist)
);
}
} // namespace ray
} // namespace darkroom
} // namespace sprout
#endif // #ifndef SPROUT_DARKROOM_RAYS_RAY_HPP