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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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sprout/darkroom/renderers/whitted_style.hpp Normal file
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#ifndef SPROUT_DARKROOM_RENDERERS_WHITTED_STYLE_HPP
#define SPROUT_DARKROOM_RENDERERS_WHITTED_STYLE_HPP
#include <cstddef>
#include <limits>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/tuple/functions.hpp>
#include <sprout/darkroom/access/access.hpp>
#include <sprout/darkroom/colors/rgb.hpp>
#include <sprout/darkroom/coords/vector.hpp>
#include <sprout/darkroom/rays/ray.hpp>
#include <sprout/darkroom/materials/material.hpp>
#include <sprout/darkroom/intersects/intersection.hpp>
#include <sprout/darkroom/objects/intersect.hpp>
namespace sprout {
namespace darkroom {
namespace renderers {
//
// whitted_mirror
//
class whitted_mirror {
private:
template<
typename Color,
typename Camera,
typename Objects,
typename Lights,
typename Ray,
typename Intersection,
typename Tracer,
typename Direction
>
SPROUT_CONSTEXPR Color color_1(
Camera const& camera,
Objects const& objs,
Lights const& lights,
Ray const& ray,
Intersection const& inter,
Tracer const& tracer,
std::size_t depth_max,
Direction const& reflect_dir
) const
{
return tracer.template operator()<Color>(
camera,
objs,
lights,
sprout::tuples::remake_clone<Ray>(
ray,
sprout::darkroom::coords::add(
sprout::darkroom::intersects::point_of_intersection(inter),
sprout::darkroom::coords::scale(
reflect_dir,
std::numeric_limits<typename sprout::darkroom::access::unit<Direction>::type>::epsilon() * 256
)
// !!!
// sprout::darkroom::coords::scale(
// sprout::darkroom::intersects::normal(inter),
// std::numeric_limits<typename sprout::darkroom::access::unit<Direction>::type>::epsilon() * 256
// )
),
reflect_dir
),
depth_max - 1
);
}
public:
template<
typename Color,
typename Camera,
typename Objects,
typename Lights,
typename Ray,
typename Intersection,
typename Tracer
>
SPROUT_CONSTEXPR Color operator()(
Camera const& camera,
Objects const& objs,
Lights const& lights,
Ray const& ray,
Intersection const& inter,
Tracer const& tracer,
std::size_t depth_max
) const
{
typedef typename std::decay<
decltype(sprout::darkroom::materials::reflection(sprout::darkroom::intersects::material(inter)))
>::type reflection_type;
return depth_max > 0
&& sprout::darkroom::intersects::does_intersect(inter)
&& sprout::darkroom::materials::reflection(sprout::darkroom::intersects::material(inter))
> std::numeric_limits<reflection_type>::epsilon()
? color_1<Color>(
camera,
objs,
lights,
ray,
inter,
tracer,
depth_max,
sprout::darkroom::coords::reflect(
sprout::darkroom::rays::direction(ray),
sprout::darkroom::intersects::normal(inter)
)
)
: sprout::tuples::make_clone<Color>(0, 0, 0)
;
}
};
//
// whitted_style
//
class whitted_style {
private:
template<
typename Color,
typename Ray,
typename Intersection
>
SPROUT_CONSTEXPR Color color_3(
Ray const& ray,
Intersection const& inter,
Color const& diffuse_color,
Color const& mirror_color
) const
{
return sprout::darkroom::intersects::does_intersect(inter)
? sprout::darkroom::colors::add(
sprout::darkroom::colors::mul(
diffuse_color,
1 - sprout::darkroom::materials::reflection(sprout::darkroom::intersects::material(inter))
),
sprout::darkroom::colors::mul(
sprout::darkroom::colors::filter(
sprout::darkroom::materials::color(sprout::darkroom::intersects::material(inter)),
mirror_color
),
sprout::darkroom::materials::reflection(sprout::darkroom::intersects::material(inter))
)
)
: sprout::darkroom::coords::normal_to_color<Color>(sprout::darkroom::rays::direction(ray))
;
}
template<
typename Color,
typename Camera,
typename Objects,
typename Lights,
typename Ray,
typename Intersection
>
SPROUT_CONSTEXPR Color color_2(
Camera const& camera,
Objects const& objs,
Lights const& lights,
Ray const& ray,
std::size_t depth_max,
Intersection const& inter,
Color const& diffuse_color
) const
{
return color_3<Color>(
ray,
inter,
diffuse_color,
sprout::darkroom::renderers::whitted_mirror().template operator()<Color>(
camera,
objs,
lights,
ray,
inter,
*this,
depth_max
)
);
}
template<
typename Color,
typename Camera,
typename Objects,
typename Lights,
typename Ray,
typename Intersection
>
SPROUT_CONSTEXPR Color color_1(
Camera const& camera,
Objects const& objs,
Lights const& lights,
Ray const& ray,
std::size_t depth_max,
Intersection const& inter
) const
{
return color_2<Color>(
camera,
objs,
lights,
ray,
depth_max,
inter,
lights.template operator()(inter, objs)
);
}
public:
template<
typename Color,
typename Camera,
typename Objects,
typename Lights,
typename Ray
>
SPROUT_CONSTEXPR Color operator()(
Camera const& camera,
Objects const& objs,
Lights const& lights,
Ray const& ray,
std::size_t depth_max
) const
{
return color_1<Color>(
camera,
objs,
lights,
ray,
depth_max,
sprout::darkroom::objects::intersect_list(objs, ray)
);
}
};
} // namespace renderers
} // namespace darkroom
} // namespace sprout
#endif // #ifndef SPROUT_DARKROOM_RENDERERS_WHITTED_STYLE_HPP