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fix darkroom: fix template operator() member-function call -> calcurate() free-function

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bolero-MURAKAMI 2013-09-24 15:08:36 +09:00
parent 3cb882ce91
commit dfcb6bcf31
25 changed files with 494 additions and 129 deletions
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sprout/darkroom/lights/calculate.hpp Normal file
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/*=============================================================================
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_LIGHTS_CALCULATE_HPP
#define SPROUT_DARKROOM_LIGHTS_CALCULATE_HPP
#include <sprout/config.hpp>
#include <sprout/tuple/indexes.hpp>
#include <sprout/type_traits/identity.hpp>
#include <sprout/type_traits/enabler_if.hpp>
#include <sprout/darkroom/access/traits.hpp>
#include <sprout/darkroom/access/access.hpp>
namespace sprout {
namespace darkroom {
namespace lights {
template<typename Light, typename Intersection, typename Objects>
struct calculate_result;
namespace detail {
template<typename Light, typename Intersection, typename Objects, bool IsTuple>
struct calculate_result;
template<typename Light, typename Intersection, typename Objects>
struct calculate_result<Light, Intersection, Objects, false>
: public sprout::identity<typename Light::color_type>
{};
template<typename Light, typename Intersection, typename Objects>
struct calculate_result<Light, Intersection, Objects, true>
: public sprout::darkroom::lights::calculate_result<typename sprout::darkroom::access::unit<Light>::type, Intersection, Objects>
{};
} // namespace detail
//
// calculate_result
//
template<typename Light, typename Intersection, typename Objects>
struct calculate_result
: public sprout::darkroom::lights::detail::calculate_result<
Light, Intersection, Objects,
sprout::darkroom::access::is_tuple<Light>::value
>
{};
template<typename Light, typename Intersection, typename Objects>
struct calculate_result<Light const, Intersection, Objects>
: public sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>
{};
template<typename Light, typename Intersection, typename Objects>
struct calculate_result<Light volatile, Intersection, Objects>
: public sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>
{};
template<typename Light, typename Intersection, typename Objects>
struct calculate_result<Light const volatile, Intersection, Objects>
: public sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>
{};
//
// calculate
//
template<
typename Light, typename Intersection, typename Objects,
typename sprout::enabler_if<!sprout::darkroom::access::is_tuple<Light>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>::type
calculate(Light const& light, Intersection const& inter, Objects const& objs);
template<
typename Light, typename Intersection, typename Objects,
typename sprout::enabler_if<sprout::darkroom::access::is_tuple<Light>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>::type
calculate(Light const& light, Intersection const& inter, Objects const& objs);
namespace detail {
template<typename Lights, typename Intersection, typename Objects, typename Color>
inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Lights, Intersection, Objects>::type
calculate_2(Color const& col) {
return col;
}
template<typename Lights, typename Intersection, typename Objects, typename Color1, typename Color2, typename... Tail>
inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Lights, Intersection, Objects>::type
calculate_2(Color1 const& col1, Color2 const& col2, Tail const&... tail) {
return sprout::darkroom::lights::detail::calculate_2<Lights, Intersection, Objects>(
sprout::darkroom::colors::add(col1, col2),
tail...
);
}
template<typename Lights, typename Intersection, typename Objects, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Lights, Intersection, Objects>::type
calculate_1(
Lights const& lights, Intersection const& inter, Objects const& objs,
sprout::index_tuple<Indexes...>
)
{
return sprout::darkroom::lights::detail::calculate_2<Lights, Intersection, Objects>(
sprout::darkroom::lights::calculate(sprout::darkroom::access::get<Indexes>(lights), inter, objs)...
);
}
} // namespace detail
//
// calculate_list
//
template<typename Lights, typename Intersection, typename Objects>
inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Lights, Intersection, Objects>::type
calculate_list(Lights const& lights, Intersection const& inter, Objects const& objs) {
return sprout::darkroom::lights::detail::calculate_1(
lights, inter, objs,
sprout::tuple_indexes<Lights>::make()
);
}
//
// calculate
//
template<
typename Light, typename Intersection, typename Objects,
typename sprout::enabler_if<!sprout::darkroom::access::is_tuple<Light>::value>::type
>
inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>::type
calculate(Light const& light, Intersection const& inter, Objects const& objs) {
return light(inter, objs);
}
template<
typename Light, typename Intersection, typename Objects,
typename sprout::enabler_if<sprout::darkroom::access::is_tuple<Light>::value>::type
>
inline SPROUT_CONSTEXPR typename sprout::darkroom::lights::calculate_result<Light, Intersection, Objects>::type
calculate(Light const& light, Intersection const& inter, Objects const& objs) {
return sprout::darkroom::lights::calculate_list(light, inter, objs);
}
} // namespace lights
} // namespace darkroom
} // namespace sprout
#endif // #ifndef SPROUT_DARKROOM_LIGHTS_CALCULATE_HPP