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Sprout.Darkroom 外部ファイルからテクスチャ読み込み機能を追加

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texture_map クラス追加
This commit is contained in:
bolero-MURAKAMI 2011-12-17 18:00:41 +09:00
parent c0309c22ed
commit 6f2be58007
7 changed files with 368 additions and 11 deletions
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1
sprout/darkroom.hpp
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@ -14,5 +14,6 @@
#include <sprout/darkroom/renderers.hpp>
#include <sprout/darkroom/tracers.hpp>
#include <sprout/darkroom/pixels.hpp>
#include <sprout/darkroom/textures.hpp>
#endif // #ifndef SPROUT_DARKROOM_HPP

50
sprout/darkroom/load/texture.hpp Normal file
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@ -0,0 +1,50 @@
#ifndef DARKROOM_DEF_LOAD_TEXTURE_IDENTIFIER
# error should define DARKROOM_DEF_LOAD_TEXTURE_IDENTIFIER.
#endif
#ifndef DARKROOM_DEF_LOAD_TEXTURE_FILE
# error should define DARKROOM_DEF_LOAD_TEXTURE_FILE.
#endif
#define DARKROOM_LOAD_IDENTIFIER_DETAIL_CAT(id, suffix) DARKROOM_LOAD_IDENTIFIER_DETAIL_CAT_I(id, suffix)
#define DARKROOM_LOAD_IDENTIFIER_DETAIL_CAT_I(id, suffix) DARKROOM_LOAD_IDENTIFIER_DETAIL_CAT_II(id ## suffix)
#define DARKROOM_LOAD_IDENTIFIER_DETAIL_CAT_II(res) res
#define DARKROOM_LOAD_IDENTIFIER DARKROOM_DEF_LOAD_TEXTURE_IDENTIFIER
#define DARKROOM_LOAD_DETAIL_IDENTIFIER(id) DARKROOM_LOAD_IDENTIFIER_DETAIL_CAT( \
DARKROOM_LOAD_IDENTIFIER_DETAIL_CAT(DARKROOM_DEF_LOAD_TEXTURE_IDENTIFIER, id), \
_darkroom_load_texture_detail \
)
SPROUT_STATIC_CONSTEXPR sprout::darkroom::textures::version_type DARKROOM_LOAD_DETAIL_IDENTIFIER(version) =
# define DARKROOM_LOADING_TEXTURE_VERSION
# include DARKROOM_DEF_LOAD_TEXTURE_FILE
# undef DARKROOM_LOADING_TEXTURE_VERSION
;
SPROUT_STATIC_CONSTEXPR sprout::darkroom::textures::info_type DARKROOM_LOAD_DETAIL_IDENTIFIER(info) = {
# define DARKROOM_LOADING_TEXTURE_INFO
# include DARKROOM_DEF_LOAD_TEXTURE_FILE
# undef DARKROOM_LOADING_TEXTURE_INFO
};
SPROUT_STATIC_CONSTEXPR sprout::darkroom::textures::image_type<
DARKROOM_LOAD_DETAIL_IDENTIFIER(info).width,
DARKROOM_LOAD_DETAIL_IDENTIFIER(info).height
> DARKROOM_LOAD_IDENTIFIER(
DARKROOM_LOAD_DETAIL_IDENTIFIER(info).image_format,
DARKROOM_LOAD_DETAIL_IDENTIFIER(info).pixel_format,
# define DARKROOM_LOADING_TEXTURE_PIXEL
# include DARKROOM_DEF_LOAD_TEXTURE_FILE
# undef DARKROOM_LOADING_TEXTURE_PIXEL
);
#undef DARKROOM_LOAD_IDENTIFIER
#undef DARKROOM_LOAD_DETAIL_IDENTIFIER
#undef DARKROOM_LOAD_IDENTIFIER_DETAIL_CAT
#undef DARKROOM_LOAD_IDENTIFIER_DETAIL_CAT_I
#undef DARKROOM_LOAD_IDENTIFIER_DETAIL_CAT_II
#undef DARKROOM_DEF_LOAD_TEXTURE_IDENTIFIER
#undef DARKROOM_DEF_LOAD_TEXTURE_FILE

1
sprout/darkroom/materials.hpp
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@ -5,5 +5,6 @@
#include <sprout/darkroom/materials/material.hpp>
#include <sprout/darkroom/materials/uniform.hpp>
#include <sprout/darkroom/materials/plaid.hpp>
#include <sprout/darkroom/materials/texture_map.hpp>
#endif // #ifndef SPROUT_DARKROOM_MATERIALS_HPP

202
sprout/darkroom/materials/texture_map.hpp Normal file
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@ -0,0 +1,202 @@
#ifndef SPROUT_DARKROOM_MATERIALS_TEXTURE_MAP_HPP
#define SPROUT_DARKROOM_MATERIALS_TEXTURE_MAP_HPP
#include <cstddef>
#include <cstdint>
#include <cmath>
#include <sprout/config.hpp>
#include <sprout/utility/value_holder.hpp>
#include <sprout/darkroom/colors/rgb.hpp>
namespace sprout {
namespace darkroom {
namespace materials {
//
// texture_map_interpolation
//
struct texture_map_interpolation {
public:
enum values {
nearest_neighbor,
bilinear,
bicubic
};
};
//
// texture_map_placement
//
struct texture_map_placement {
public:
enum values {
tile,
once
};
};
//
// texture_map
//
template<typename Texture, typename Scale = double>
class texture_map {
public:
typedef Texture texture_type;
typedef typename texture_type::value_type result_type;
typedef Scale unit_type;
typedef sprout::darkroom::materials::texture_map_interpolation texture_map_interpolation;
typedef sprout::darkroom::materials::texture_map_placement texture_map_placement;
private:
static SPROUT_CONSTEXPR unit_type fmod(unit_type const& n, unit_type const& d) {
return n - std::intmax_t(n / d) * d;
}
private:
sprout::value_holder<texture_type const&> texture_;
unit_type scale_;
unit_type offset_u_;
unit_type offset_v_;
result_type default_color_;
texture_map_interpolation::values interpolation_value_;
texture_map_placement::values placement_value_;
private:
SPROUT_CONSTEXPR bool is_nearest() const {
return interpolation_value_ == texture_map_interpolation::nearest_neighbor;
}
SPROUT_CONSTEXPR bool is_bilinear() const {
return interpolation_value_ == texture_map_interpolation::bilinear;
}
SPROUT_CONSTEXPR bool is_bicubic() const {
return interpolation_value_ == texture_map_interpolation::bicubic;
}
SPROUT_CONSTEXPR bool is_tile() const {
return placement_value_ == texture_map_placement::tile;
}
SPROUT_CONSTEXPR bool is_once() const {
return placement_value_ == texture_map_placement::once;
}
SPROUT_CONSTEXPR result_type get_color(unit_type const& x, unit_type const& y) const {
return is_tile()
? texture_.get()(
x < 0
? texture_.get().width() - 1 - static_cast<std::size_t>(-x) % texture_.get().width()
: static_cast<std::size_t>(x) % texture_.get().width()
,
y < 0
? texture_.get().height() - 1 - static_cast<std::size_t>(-y) % texture_.get().height()
: static_cast<std::size_t>(y) % texture_.get().height()
)
: x < 0 || x >= texture_.get().width()
|| y < 0 || y >= texture_.get().height()
? default_color_
: texture_.get()(static_cast<std::size_t>(x), static_cast<std::size_t>(y))
;
}
template<typename Unit>
SPROUT_CONSTEXPR result_type calc_nearest(Unit const& x, Unit const& y) const {
return get_color(x, y);
}
template<typename Unit>
SPROUT_CONSTEXPR result_type calc_bilinear_1(
Unit const& x,
Unit const& xf,
Unit const& xc,
Unit const& y,
Unit const& yf,
Unit const& yc
) const
{
return sprout::darkroom::colors::add(
sprout::darkroom::colors::mul(
sprout::darkroom::colors::add(
sprout::darkroom::colors::mul(get_color(xf, yf), 1 - (x - xf)),
sprout::darkroom::colors::mul(get_color(xc, yf), 1 - (xc - x))
),
1 - (y - yf)
),
sprout::darkroom::colors::mul(
sprout::darkroom::colors::add(
sprout::darkroom::colors::mul(get_color(xf, yc), 1 - (x - xf)),
sprout::darkroom::colors::mul(get_color(xc, yc), 1 - (xc - x))
),
1 - (yc - y)
)
);
}
template<typename Unit>
SPROUT_CONSTEXPR result_type calc_bilinear(Unit const& x, Unit const& y) const {
using std::floor;
return calc_bilinear_1(x, floor(x - 0.5), floor(x + 0.5), y, floor(y - 0.5), floor(y + 0.5));
}
template<typename Unit>
SPROUT_CONSTEXPR result_type calc(Unit const& x, Unit const& y) const {
return is_nearest() ? calc_nearest(x, y)
: calc_bilinear(x, y)
;
}
public:
SPROUT_CONSTEXPR explicit texture_map(
texture_type const& texture,
unit_type const& scale = 1,
unit_type const& offset_u = 0,
unit_type const& offset_v = 0,
result_type const& default_color = result_type(),
texture_map_interpolation::values interpolation_value = texture_map_interpolation::nearest_neighbor,
texture_map_placement::values placement_value = texture_map_placement::tile
)
: texture_(texture)
, scale_(scale)
, offset_u_(offset_u)
, offset_v_(offset_v)
, default_color_(default_color)
, interpolation_value_(interpolation_value)
, placement_value_(placement_value)
{}
template<typename Unit>
SPROUT_CONSTEXPR result_type operator()(Unit const& u, Unit const& v) const {
return calc(
(u - offset_u_ + scale_ / 2) / scale_ * texture_.get().width(),
(-(v - offset_v_) + scale_ / 2) / scale_ * texture_.get().height()
);
}
};
//
// make_texture_map
//
template<typename Texture>
SPROUT_CONSTEXPR sprout::darkroom::materials::texture_map<Texture>
make_texture_map(Texture const& texture) {
return sprout::darkroom::materials::texture_map<Texture>(texture);
}
template<typename Texture, typename Unit>
SPROUT_CONSTEXPR sprout::darkroom::materials::texture_map<Texture, Unit>
make_texture_map(
Texture const& texture,
Unit const& scale,
Unit const& offset_u
= 0
,
Unit const& offset_v
= 0
,
typename sprout::darkroom::materials::texture_map<Texture, Unit>::result_type const& default_color
= typename sprout::darkroom::materials::texture_map<Texture, Unit>::result_typ()
,
sprout::darkroom::materials::texture_map_interpolation::values interpolation_value
= sprout::darkroom::materials::texture_map_interpolation::nearest_neighbor
,
sprout::darkroom::materials::texture_map_placement::values placement_value
= sprout::darkroom::materials::texture_map_placement::tile
)
{
return sprout::darkroom::materials::texture_map<Texture, Unit>(
texture,
scale,
offset_u,
offset_v,
default_color,
interpolation_value,
placement_value
);
}
} // namespace materials
} // namespace darkroom
} // namespace sprout
#endif // #ifndef SPROUT_DARKROOM_MATERIALS_TEXTURE_MAP_HPP

22
sprout/darkroom/objects/sphere.hpp
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@ -135,12 +135,12 @@ namespace sprout {
)
;
}
template<typename Ray, typename Point>
template<typename Ray, typename Vec>
SPROUT_CONSTEXPR typename intersection<Ray>::type intersect_6(
Ray const& ray,
zwo_type const& zwo,
drei_type const& drei,
Point const& poi
Vec const& normal
) const
{
using std::atan2;
@ -153,19 +153,19 @@ namespace sprout {
sprout::darkroom::materials::calc_material( // ! Spherical
mat_,
atan2(
sprout::darkroom::coords::x(poi),
sprout::darkroom::coords::z(poi)
sprout::darkroom::coords::z(normal),
sprout::darkroom::coords::x(normal)
)
/ (2 * pi)
/ pi
,
atan2(
sprout::darkroom::coords::y(normal),
sqrt(
sprout::darkroom::coords::x(poi) * sprout::darkroom::coords::x(poi)
+ sprout::darkroom::coords::y(poi) * sprout::darkroom::coords::y(poi)
),
sprout::darkroom::coords::z(poi)
sprout::darkroom::coords::x(normal) * sprout::darkroom::coords::x(normal)
+ sprout::darkroom::coords::z(normal) * sprout::darkroom::coords::z(normal)
)
/ (2 * pi)
)
/ (pi / 2)
)
);
}
@ -180,7 +180,7 @@ namespace sprout {
ray,
zwo,
drei,
sprout::tuples::get<dr::point_of_intersection>(drei)
sprout::tuples::get<dr::normal>(drei)
);
}
template<typename Ray>

7
sprout/darkroom/textures.hpp Normal file
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@ -0,0 +1,7 @@
#ifndef SPROUT_DARKROOM_TEXTURES_HPP
#define SPROUT_DARKROOM_TEXTURES_HPP
#include <sprout/config.hpp>
#include <sprout/darkroom/textures/texture.hpp>
#endif // #ifndef SPROUT_DARKROOM_TEXTURES_HPP

96
sprout/darkroom/textures/texture.hpp Normal file
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@ -0,0 +1,96 @@
#ifndef SPROUT_DARKROOM_TEXTURES_TEXTURE_HPP
#define SPROUT_DARKROOM_TEXTURES_TEXTURE_HPP
#include <cstddef>
#include <sprout/config.hpp>
#include <sprout/array.hpp>
#include <sprout/darkroom/access/access.hpp>
#include <sprout/darkroom/colors/rgb.hpp>
//
// DARKROOM_LOAD_TEXTURE
//
#define DARKROOM_LOAD_TEXTURE <sprout/darkroom/load/texture.hpp>
//
// DARKROOM_TEX_VERSION
//
#define DARKROOM_TEX_VERSION(NUM) NUM
//
// DARKROOM_TEX_IMAGE_DEFAULT
//
#define DARKROOM_TEX_IMAGE_DEFAULT 0
//
// DARKROOM_TEX_PIXEL_INT_R8G8B8
//
#define DARKROOM_TEX_PIXEL_INT_R8G8B8 0
namespace sprout {
namespace darkroom {
namespace textures {
//
// version_type
//
typedef unsigned long version_type;
//
// info_type
//
struct info_type {
public:
unsigned long image_format;
unsigned long pixel_format;
std::size_t width;
std::size_t height;
};
//
// image_type
//
template<std::size_t Width, std::size_t Height, typename Color = sprout::darkroom::colors::rgb_f>
struct image_type {
public:
typedef Color color_type;
typedef color_type value_type;
typedef std::size_t size_type;
SPROUT_STATIC_CONSTEXPR size_type static_width = Width;
SPROUT_STATIC_CONSTEXPR size_type static_height = Height;
typedef sprout::array<value_type, static_width * static_height> pixels_type;
typedef typename sprout::darkroom::access::unit<color_type>::type color_component_type;
private:
pixels_type pixels_;
public:
template<typename... Elems>
SPROUT_CONSTEXPR image_type(
unsigned long image_format,
unsigned long pixel_format,
Elems const&... elems
)
: pixels_{{
color_type(
static_cast<color_component_type>((elems >> 16) & 0xFF) / 0xFF,
static_cast<color_component_type>((elems >> 8) & 0xFF) / 0xFF,
static_cast<color_component_type>(elems & 0xFF) / 0xFF
)...
}}
{
static_assert(sizeof...(Elems) == static_width * static_height, "image_type<>: unmatch image size");
}
SPROUT_CONSTEXPR value_type const& operator()(size_type x, size_type y) const {
return pixels_[y * static_width + x];
}
SPROUT_CONSTEXPR size_type width() const {
return static_width;
}
SPROUT_CONSTEXPR size_type height() const {
return static_height;
}
SPROUT_CONSTEXPR pixels_type const& pixels() const {
return pixels_;
}
};
} // namespace textures
} // namespace darkroom
} // namespace sprout
#endif // #ifndef SPROUT_DARKROOM_TEXTURES_TEXTURE_HPP