mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
125 lines
4.4 KiB
C++
125 lines
4.4 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2017 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_DARKROOM_INTERSECTS_INTERSECTION_HPP
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#define SPROUT_DARKROOM_INTERSECTS_INTERSECTION_HPP
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/tuple/tuple.hpp>
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#include <sprout/utility/forward.hpp>
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#include <sprout/type_traits/enabler_if.hpp>
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#include <sprout/darkroom/access/access.hpp>
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#include <sprout/darkroom/coords/vector.hpp>
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#include <sprout/darkroom/materials/material.hpp>
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namespace sprout {
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namespace darkroom {
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namespace intersects {
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//
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// intersection
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//
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typedef sprout::tuples::tuple<
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bool,
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double,
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sprout::darkroom::coords::vector3d_t,
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sprout::darkroom::coords::vector3d_t,
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sprout::darkroom::materials::material,
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bool
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> intersection;
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//
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// has_is_from_inside
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//
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template<typename T>
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struct has_is_from_inside
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: public sprout::bool_constant<(sprout::darkroom::access::size<T>::value >= 6)>
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{};
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//
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// does_intersect
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// distance
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// point_of_intersection
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// normal
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// material
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// is_from_inside
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//
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template<typename T>
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inline SPROUT_CONSTEXPR auto
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does_intersect(T&& t)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::darkroom::access::get<0>(SPROUT_FORWARD(T, t)))
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-> decltype(sprout::darkroom::access::get<0>(SPROUT_FORWARD(T, t)))
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{
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return sprout::darkroom::access::get<0>(SPROUT_FORWARD(T, t));
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}
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template<typename T>
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inline SPROUT_CONSTEXPR auto
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distance(T&& t)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::darkroom::access::get<1>(SPROUT_FORWARD(T, t)))
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-> decltype(sprout::darkroom::access::get<1>(SPROUT_FORWARD(T, t)))
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{
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return sprout::darkroom::access::get<1>(SPROUT_FORWARD(T, t));
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}
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template<typename T>
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inline SPROUT_CONSTEXPR auto
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point_of_intersection(T&& t)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::darkroom::access::get<2>(SPROUT_FORWARD(T, t)))
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-> decltype(sprout::darkroom::access::get<2>(SPROUT_FORWARD(T, t)))
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{
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return sprout::darkroom::access::get<2>(SPROUT_FORWARD(T, t));
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}
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template<typename T>
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inline SPROUT_CONSTEXPR auto
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normal(T&& t)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::darkroom::access::get<3>(SPROUT_FORWARD(T, t)))
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-> decltype(sprout::darkroom::access::get<3>(SPROUT_FORWARD(T, t)))
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{
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return sprout::darkroom::access::get<3>(SPROUT_FORWARD(T, t));
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}
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template<typename T>
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inline SPROUT_CONSTEXPR auto
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material(T&& t)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::darkroom::access::get<4>(SPROUT_FORWARD(T, t)))
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-> decltype(sprout::darkroom::access::get<4>(SPROUT_FORWARD(T, t)))
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{
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return sprout::darkroom::access::get<4>(SPROUT_FORWARD(T, t));
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}
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template<
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typename T,
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typename sprout::enabler_if<sprout::darkroom::intersects::has_is_from_inside<typename std::decay<T>::type>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR auto
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is_from_inside(T&& t)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::darkroom::access::get<5>(SPROUT_FORWARD(T, t)))
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-> decltype(sprout::darkroom::access::get<5>(SPROUT_FORWARD(T, t)))
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{
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return sprout::darkroom::access::get<5>(SPROUT_FORWARD(T, t));
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}
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template<
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typename T,
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typename sprout::enabler_if<!sprout::darkroom::intersects::has_is_from_inside<typename std::decay<T>::type>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR typename sprout::darkroom::access::element<5, sprout::darkroom::intersects::intersection>::type
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is_from_inside(T&&)
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SPROUT_NOEXCEPT_IF_EXPR((typename sprout::darkroom::access::element<5, sprout::darkroom::intersects::intersection>::type()))
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{
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return typename sprout::darkroom::access::element<5, sprout::darkroom::intersects::intersection>::type();
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}
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//
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// make_intersection
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//
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template<typename... Elements>
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inline SPROUT_CONSTEXPR sprout::tuples::tuple<Elements...>
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make_intersection(Elements const&... elems) {
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return sprout::tuples::make_tuple(elems...);
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}
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} // namespace intersects
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} // namespace darkroom
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} // namespace sprout
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#endif // #ifndef SPROUT_DARKROOM_INTERSECTS_INTERSECTION_HPP
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