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add is_from_inside property

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This commit is contained in:
bolero-MURAKAMI 2013-12-04 23:38:33 +09:00
parent 014d339803
commit 8e3c426684
4 changed files with 64 additions and 22 deletions
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29
sprout/darkroom/objects/sphere.hpp
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@ -46,15 +46,17 @@ namespace sprout {
std::declval<material_type const&>(),
std::declval<unit_type const&>(),
std::declval<unit_type const&>()
))
)),
bool
> type;
};
private:
typedef sprout::tuples::tuple<bool, unit_type> zwo_type;
typedef sprout::tuples::tuple<int, bool, unit_type> zwo_type;
typedef sprout::tuples::tuple<position_type, position_type> drei_type;
struct zw {
SPROUT_STATIC_CONSTEXPR std::size_t does_intersect = 0;
SPROUT_STATIC_CONSTEXPR std::size_t distance = 1;
SPROUT_STATIC_CONSTEXPR std::size_t hit_side = 0;
SPROUT_STATIC_CONSTEXPR std::size_t does_intersect = 1;
SPROUT_STATIC_CONSTEXPR std::size_t distance = 2;
};
struct dr {
SPROUT_STATIC_CONSTEXPR std::size_t point_of_intersection = 0;
@ -68,6 +70,10 @@ namespace sprout {
SPROUT_STATIC_CONSTEXPR zwo_type
zweitens_1(unit_type const& i1, unit_type const& i2) {
return zwo_type(
i2 > 0
? i1 < 0 ? -1 : 1
: 0
,
i2 > 0,
i2 > 0
? i1 < 0 ? i2 : i1
@ -78,7 +84,7 @@ namespace sprout {
zweitens(bool neg, unit_type const& b, unit_type const& det) {
return neg
? zweitens_1(b - det, b + det)
: zwo_type(false, -1)
: zwo_type(0, false, -1)
;
}
template<typename Ray>
@ -104,7 +110,7 @@ namespace sprout {
}
template<typename Ray, typename Vec>
SPROUT_CONSTEXPR typename intersection<Ray>::type
intersect_6(zwo_type const& zwo, drei_type const& drei, Vec const& normal) const {
intersect_6(Ray const& ray, zwo_type const& zwo, drei_type const& drei, Vec const& normal) const {
return typename intersection<Ray>::type(
sprout::tuples::get<zw::does_intersect>(zwo),
sprout::tuples::get<zw::distance>(zwo),
@ -126,13 +132,15 @@ namespace sprout {
)
)
/ sprout::math::half_pi<unit_type>()
)
),
sprout::darkroom::coords::dot(normal, sprout::darkroom::rays::direction(ray)) > 0
);
}
template<typename Ray>
SPROUT_CONSTEXPR typename intersection<Ray>::type
intersect_5(zwo_type const& zwo, drei_type const& drei) const {
return intersect_6<Ray>(
intersect_5(Ray const& ray, zwo_type const& zwo, drei_type const& drei) const {
return intersect_6(
ray,
zwo,
drei,
sprout::tuples::get<dr::normal>(drei)
@ -141,7 +149,8 @@ namespace sprout {
template<typename Ray>
SPROUT_CONSTEXPR typename intersection<Ray>::type
intersect_4(Ray const& ray, zwo_type const& zwo) const {
return intersect_5<Ray>(
return intersect_5(
ray,
zwo,
drittens(
ray,