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add darkroom light_list, parallel_light, ambient_light

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fix darkroom whitted_style
This commit is contained in:
bolero-MURAKAMI 2012-08-14 18:17:48 +09:00
parent 6b1efc8a15
commit dc1e85923b
7 changed files with 285 additions and 33 deletions
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65
sprout/darkroom/lights/light_list.hpp Normal file
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#ifndef SPROUT_DARKROOM_LIGHTS_LIGHT_LIST_HPP
#define SPROUT_DARKROOM_LIGHTS_LIGHT_LIST_HPP
#include <limits>
#include <sprout/config.hpp>
#include <sprout/index_tuple.hpp>
#include <sprout/tuple/tuple.hpp>
#include <sprout/darkroom/access/access.hpp>
#include <sprout/darkroom/colors/rgb.hpp>
namespace sprout {
namespace darkroom {
namespace lights {
//
// light_list
//
template<typename... Lights>
class light_list {
public:
typedef sprout::tuples::tuple<Lights...> lights_type;
typedef typename sprout::darkroom::access::unit<lights_type>::type::color_type color_type;
private:
lights_type lights_;
private:
template<typename Color>
SPROUT_CONSTEXPR color_type shade_2(Color const& col) const {
return col;
}
template<typename Color1, typename Color2, typename... Tail>
SPROUT_CONSTEXPR color_type shade_2(Color1 const& col1, Color2 const& col2, Tail const&... tail) const {
return shade_2(
sprout::darkroom::colors::add(col1, col2),
tail...
);
}
template<typename Intersection, typename Objects, sprout::index_t... Indexes>
SPROUT_CONSTEXPR color_type shade_1(
Intersection const& inter, Objects const& objs,
sprout::index_tuple<Indexes...>
) const
{
return shade_2(sprout::darkroom::access::get<Indexes>(lights_).template operator()(inter, objs)...);
}
public:
explicit SPROUT_CONSTEXPR light_list(Lights const&... lights)
: lights_(lights...)
{}
template<typename Intersection, typename Objects>
SPROUT_CONSTEXPR color_type operator()(Intersection const& inter, Objects const& objs) const {
return shade_1(inter, objs, sprout::index_range<0, sizeof...(Lights)>::make());
}
};
//
// make_light_list
//
template<typename... Lights>
inline SPROUT_CONSTEXPR sprout::darkroom::lights::light_list<Lights...>
make_light_list(Lights const&... lights) {
return sprout::darkroom::lights::light_list<Lights...>(lights...);
}
} // namespace lights
} // namespace darkroom
} // namespace sprout
#endif // #ifndef SPROUT_DARKROOM_LIGHTS_LIGHT_LIST_HPP