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https://github.com/bolero-MURAKAMI/Sprout
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fix darkroom: fix template operator() member-function call -> calcurate() free-function
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bolero-MURAKAMI
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25 changed files with 494 additions and 129 deletions
138
sprout/darkroom/lights/calculate.hpp
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138
sprout/darkroom/lights/calculate.hpp
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/*=============================================================================
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Copyright (c) 2011-2013 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_LIGHTS_CALCULATE_HPP
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#define SPROUT_DARKROOM_LIGHTS_CALCULATE_HPP
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#include <sprout/config.hpp>
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#include <sprout/tuple/indexes.hpp>
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#include <sprout/type_traits/identity.hpp>
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#include <sprout/type_traits/enabler_if.hpp>
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#include <sprout/darkroom/access/traits.hpp>
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#include <sprout/darkroom/access/access.hpp>
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namespace sprout {
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namespace darkroom {
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namespace lights {
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template<typename Light, typename Intersection, typename Objects>
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struct calculate_result;
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namespace detail {
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template<typename Light, typename Intersection, typename Objects, bool IsTuple>
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struct calculate_result;
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template<typename Light, typename Intersection, typename Objects>
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struct calculate_result<Light, Intersection, Objects, false>
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: public sprout::identity<typename Light::color_type>
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{};
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template<typename Light, typename Intersection, typename Objects>
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struct calculate_result<Light, Intersection, Objects, true>
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: public sprout::darkroom::lights::calculate_result<typename sprout::darkroom::access::unit<Light>::type, Intersection, Objects>
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{};
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} // namespace detail
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//
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// calculate_result
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//
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template<typename Light, typename Intersection, typename Objects>
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struct calculate_result
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: public sprout::darkroom::lights::detail::calculate_result<
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Light, Intersection, Objects,
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sprout::darkroom::access::is_tuple<Light>::value
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>
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{};
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template<typename Light, typename Intersection, typename Objects>
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struct calculate_result<Light const, Intersection, Objects>
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: public sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>
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{};
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template<typename Light, typename Intersection, typename Objects>
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struct calculate_result<Light volatile, Intersection, Objects>
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: public sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>
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{};
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template<typename Light, typename Intersection, typename Objects>
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struct calculate_result<Light const volatile, Intersection, Objects>
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: public sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>
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{};
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//
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// calculate
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//
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template<
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typename Light, typename Intersection, typename Objects,
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typename sprout::enabler_if<!sprout::darkroom::access::is_tuple<Light>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>::type
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calculate(Light const& light, Intersection const& inter, Objects const& objs);
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template<
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typename Light, typename Intersection, typename Objects,
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typename sprout::enabler_if<sprout::darkroom::access::is_tuple<Light>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>::type
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calculate(Light const& light, Intersection const& inter, Objects const& objs);
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namespace detail {
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template<typename Lights, typename Intersection, typename Objects, typename Color>
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inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Lights, Intersection, Objects>::type
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calculate_2(Color const& col) {
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return col;
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}
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template<typename Lights, typename Intersection, typename Objects, typename Color1, typename Color2, typename... Tail>
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inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Lights, Intersection, Objects>::type
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calculate_2(Color1 const& col1, Color2 const& col2, Tail const&... tail) {
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return sprout::darkroom::lights::detail::calculate_2<Lights, Intersection, Objects>(
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sprout::darkroom::colors::add(col1, col2),
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tail...
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);
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}
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template<typename Lights, typename Intersection, typename Objects, sprout::index_t... Indexes>
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inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Lights, Intersection, Objects>::type
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calculate_1(
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Lights const& lights, Intersection const& inter, Objects const& objs,
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sprout::index_tuple<Indexes...>
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)
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{
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return sprout::darkroom::lights::detail::calculate_2<Lights, Intersection, Objects>(
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sprout::darkroom::lights::calculate(sprout::darkroom::access::get<Indexes>(lights), inter, objs)...
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);
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}
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} // namespace detail
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//
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// calculate_list
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//
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template<typename Lights, typename Intersection, typename Objects>
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inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Lights, Intersection, Objects>::type
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calculate_list(Lights const& lights, Intersection const& inter, Objects const& objs) {
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return sprout::darkroom::lights::detail::calculate_1(
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lights, inter, objs,
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sprout::tuple_indexes<Lights>::make()
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);
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}
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//
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// calculate
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//
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template<
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typename Light, typename Intersection, typename Objects,
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typename sprout::enabler_if<!sprout::darkroom::access::is_tuple<Light>::value>::type
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>
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inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>::type
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calculate(Light const& light, Intersection const& inter, Objects const& objs) {
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return light(inter, objs);
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}
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template<
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typename Light, typename Intersection, typename Objects,
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typename sprout::enabler_if<sprout::darkroom::access::is_tuple<Light>::value>::type
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>
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inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>::type
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calculate(Light const& light, Intersection const& inter, Objects const& objs) {
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return sprout::darkroom::lights::calculate_list(light, inter, objs);
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}
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} // namespace lights
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} // namespace darkroom
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} // namespace sprout
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#endif // #ifndef SPROUT_DARKROOM_LIGHTS_CALCULATE_HPP
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@ -9,66 +9,21 @@
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#define SPROUT_DARKROOM_LIGHTS_LIGHT_LIST_HPP
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#include <sprout/config.hpp>
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#include <sprout/limits.hpp>
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#include <sprout/index_tuple/metafunction.hpp>
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#include <sprout/tuple/tuple.hpp>
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#include <sprout/darkroom/access/access.hpp>
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#include <sprout/darkroom/colors/rgb.hpp>
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#include <sprout/tuple/tuple/make_tuple.hpp>
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#include <sprout/utility/forward.hpp>
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namespace sprout {
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namespace darkroom {
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namespace lights {
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//
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// light_list
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// make_object_list
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//
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template<typename... Lights>
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class light_list {
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public:
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typedef sprout::tuples::tuple<Lights...> lights_type;
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typedef typename sprout::darkroom::access::unit<lights_type>::type::color_type color_type;
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private:
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lights_type lights_;
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private:
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template<typename Color>
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SPROUT_CONSTEXPR color_type
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shade_2(Color const& col) const {
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return col;
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}
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template<typename Color1, typename Color2, typename... Tail>
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SPROUT_CONSTEXPR color_type
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shade_2(Color1 const& col1, Color2 const& col2, Tail const&... tail) const {
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return shade_2(
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sprout::darkroom::colors::add(col1, col2),
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tail...
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);
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}
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template<typename Intersection, typename Objects, sprout::index_t... Indexes>
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SPROUT_CONSTEXPR color_type
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shade_1(
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Intersection const& inter, Objects const& objs,
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sprout::index_tuple<Indexes...>
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) const
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{
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return shade_2(sprout::darkroom::access::get<Indexes>(lights_).template operator()(inter, objs)...);
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}
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public:
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explicit SPROUT_CONSTEXPR light_list(Lights const&... lights)
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: lights_(lights...)
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{}
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template<typename Intersection, typename Objects>
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SPROUT_CONSTEXPR color_type
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operator()(Intersection const& inter, Objects const& objs) const {
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return shade_1(inter, objs, sprout::index_pack<Lights...>::make());
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}
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};
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//
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// make_light_list
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//
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template<typename... Lights>
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inline SPROUT_CONSTEXPR sprout::darkroom::lights::light_list<Lights...>
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make_light_list(Lights const&... lights) {
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return sprout::darkroom::lights::light_list<Lights...>(lights...);
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inline SPROUT_CONSTEXPR auto
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make_light_list(Lights&&... lights)
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-> decltype(sprout::make_tuple(sprout::forward<Lights>(lights)...))
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{
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return sprout::make_tuple(sprout::forward<Lights>(lights)...);
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}
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} // namespace lights
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} // namespace darkroom
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