mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-23 21:25:49 +00:00
214 lines
7 KiB
C++
214 lines
7 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2014 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_OBJECTS_AA_PLANE_HPP
|
|
#define SPROUT_DARKROOM_OBJECTS_AA_PLANE_HPP
|
|
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/tuple/tuple.hpp>
|
|
#include <sprout/tuple/functions.hpp>
|
|
#include <sprout/darkroom/access/access.hpp>
|
|
#include <sprout/darkroom/coords/vector.hpp>
|
|
#include <sprout/darkroom/rays/ray.hpp>
|
|
#include <sprout/darkroom/materials/material.hpp>
|
|
|
|
namespace sprout {
|
|
namespace darkroom {
|
|
namespace objects {
|
|
//
|
|
// aa_plane_direction
|
|
//
|
|
struct aa_plane_direction {
|
|
public:
|
|
enum values {
|
|
x,
|
|
y,
|
|
z
|
|
};
|
|
};
|
|
//
|
|
// aa_plane_face
|
|
//
|
|
struct aa_plane_face {
|
|
public:
|
|
enum values {
|
|
both,
|
|
negative,
|
|
positive,
|
|
same_as_direction
|
|
};
|
|
};
|
|
//
|
|
// basic_aa_plane
|
|
//
|
|
template<typename Material, typename Position = sprout::darkroom::coords::vector3d_t>
|
|
class basic_aa_plane {
|
|
public:
|
|
typedef Material material_type;
|
|
typedef Position position_type;
|
|
typedef typename sprout::darkroom::access::unit<position_type>::type unit_type;
|
|
typedef sprout::darkroom::objects::aa_plane_direction aa_plane_direction;
|
|
typedef sprout::darkroom::objects::aa_plane_face aa_plane_face;
|
|
public:
|
|
template<typename Ray>
|
|
struct intersection {
|
|
typedef sprout::tuples::tuple<
|
|
bool,
|
|
unit_type,
|
|
position_type,
|
|
position_type,
|
|
decltype(sprout::darkroom::materials::calculate_material(
|
|
std::declval<material_type const&>(),
|
|
std::declval<unit_type const&>(),
|
|
std::declval<unit_type const&>()
|
|
)),
|
|
bool
|
|
> type;
|
|
};
|
|
private:
|
|
aa_plane_direction::values direction_value_;
|
|
unit_type val_;
|
|
material_type mat_;
|
|
aa_plane_face::values face_;
|
|
private:
|
|
SPROUT_CONSTEXPR bool
|
|
is_x() const {
|
|
return direction_value_ == aa_plane_direction::x;
|
|
}
|
|
SPROUT_CONSTEXPR bool
|
|
is_y() const {
|
|
return direction_value_ == aa_plane_direction::y;
|
|
}
|
|
SPROUT_CONSTEXPR bool
|
|
is_z() const {
|
|
return direction_value_ == aa_plane_direction::z;
|
|
}
|
|
template<typename Ray>
|
|
SPROUT_CONSTEXPR typename intersection<Ray>::type
|
|
intersect_5(int hit_side, bool is_from_inside, bool does_intersect, unit_type distance, position_type const& point_of_intersection) const {
|
|
return typename intersection<Ray>::type(
|
|
does_intersect,
|
|
distance,
|
|
point_of_intersection,
|
|
is_x() ? position_type(hit_side > 0 ? 1 : -1, 0, 0)
|
|
: is_y() ? position_type(0, hit_side > 0 ? 1 : -1, 0)
|
|
: position_type(0, 0, hit_side > 0 ? 1 : -1)
|
|
,
|
|
is_x() ? sprout::darkroom::materials::calculate_material(
|
|
mat_,
|
|
sprout::darkroom::coords::z(point_of_intersection),
|
|
sprout::darkroom::coords::y(point_of_intersection)
|
|
)
|
|
: is_y() ? sprout::darkroom::materials::calculate_material(
|
|
mat_,
|
|
sprout::darkroom::coords::x(point_of_intersection),
|
|
sprout::darkroom::coords::z(point_of_intersection)
|
|
)
|
|
: sprout::darkroom::materials::calculate_material(
|
|
mat_,
|
|
sprout::darkroom::coords::x(point_of_intersection),
|
|
sprout::darkroom::coords::y(point_of_intersection)
|
|
)
|
|
,
|
|
is_from_inside
|
|
);
|
|
}
|
|
template<typename Ray>
|
|
SPROUT_CONSTEXPR typename intersection<Ray>::type
|
|
intersect_4(Ray const& ray, int hit_side, bool is_from_inside, bool does_intersect, unit_type distance) const {
|
|
return intersect_5<Ray>(
|
|
hit_side,
|
|
is_from_inside,
|
|
does_intersect,
|
|
distance,
|
|
does_intersect
|
|
? sprout::darkroom::rays::point_of_intersection(ray, distance)
|
|
: position_type(0, 0, 0)
|
|
);
|
|
}
|
|
template<typename Ray>
|
|
SPROUT_CONSTEXPR typename intersection<Ray>::type
|
|
intersect_3(Ray const& ray, unit_type pos_v, unit_type dir_v, int hit_side, bool is_from_inside, bool does_intersect) const {
|
|
return intersect_4(
|
|
ray,
|
|
hit_side,
|
|
is_from_inside,
|
|
does_intersect,
|
|
does_intersect
|
|
? (pos_v - val_) / -dir_v
|
|
: unit_type(-1)
|
|
);
|
|
}
|
|
template<typename Ray>
|
|
SPROUT_CONSTEXPR typename intersection<Ray>::type
|
|
intersect_2(Ray const& ray, unit_type pos_v, unit_type dir_v, int hit_side, bool is_from_inside) const {
|
|
return intersect_3(
|
|
ray,
|
|
pos_v,
|
|
dir_v,
|
|
hit_side,
|
|
is_from_inside,
|
|
(hit_side > 0 && dir_v < 0) || (hit_side < 0 && dir_v > 0)
|
|
);
|
|
}
|
|
template<typename Ray>
|
|
SPROUT_CONSTEXPR typename intersection<Ray>::type
|
|
intersect_1(Ray const& ray, unit_type pos_v, unit_type dir_v) const {
|
|
return intersect_2(
|
|
ray,
|
|
pos_v,
|
|
dir_v,
|
|
pos_v > val_ ? 1 : -1,
|
|
face_ == aa_plane_face::both ? false
|
|
: face_ == aa_plane_face::negative ? dir_v > 0
|
|
: face_ == aa_plane_face::positive ? dir_v < 0
|
|
: (val_ > 0 && dir_v < 0) || (val_ < 0 && dir_v > 0)
|
|
);
|
|
}
|
|
public:
|
|
SPROUT_CONSTEXPR basic_aa_plane(aa_plane_direction::values direction_value, unit_type val, material_type const& mat, aa_plane_face::values face = aa_plane_face::both)
|
|
: direction_value_(direction_value)
|
|
, val_(val)
|
|
, mat_(mat)
|
|
, face_(face)
|
|
{}
|
|
template<typename Ray>
|
|
SPROUT_CONSTEXPR typename intersection<Ray>::type
|
|
intersect(Ray const& ray) const {
|
|
return intersect_1(
|
|
ray,
|
|
(is_x() ? sprout::darkroom::coords::x(sprout::darkroom::rays::position(ray))
|
|
: is_y() ? sprout::darkroom::coords::y(sprout::darkroom::rays::position(ray))
|
|
: sprout::darkroom::coords::z(sprout::darkroom::rays::position(ray))
|
|
),
|
|
(is_x() ? sprout::darkroom::coords::x(sprout::darkroom::rays::direction(ray))
|
|
: is_y() ? sprout::darkroom::coords::y(sprout::darkroom::rays::direction(ray))
|
|
: sprout::darkroom::coords::z(sprout::darkroom::rays::direction(ray))
|
|
)
|
|
);
|
|
}
|
|
};
|
|
//
|
|
// make_aa_plane
|
|
//
|
|
template<typename Material, typename Unit>
|
|
inline SPROUT_CONSTEXPR sprout::darkroom::objects::basic_aa_plane<Material>
|
|
make_aa_plane(
|
|
sprout::darkroom::objects::aa_plane_direction::values dir_val,
|
|
Unit const& val,
|
|
Material const& mat,
|
|
sprout::darkroom::objects::aa_plane_face::values face_val = sprout::darkroom::objects::aa_plane_face::both
|
|
)
|
|
{
|
|
return sprout::darkroom::objects::basic_aa_plane<Material>(dir_val, val, mat, face_val);
|
|
}
|
|
} // namespace objects
|
|
} // namespace darkroom
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_DARKROOM_OBJECTS_AA_PLANE_HPP
|