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#include "wall-atlas.hpp"
#include "compat/exception.hpp"
#include "src/tile-defs.hpp"
#include <utility>
#include <Corrade/Containers/ArrayViewStl.h>
#include <Corrade/Containers/StridedArrayView.h>
#include <Magnum/ImageView.h>
#include <Magnum/GL/TextureFormat.h>
namespace floormat {
namespace {
Vector2ui get_image_size(const ImageView2D& img)
{
const Size<3> size = img.pixels().size();
const auto width = size[1], height = size[0];
fm_soft_assert(size[2] >= 3 && size[2] <= 4);
fm_soft_assert(width > 0 && height > 0);
return { (unsigned)width, (unsigned)height };
}
} // namespace
wall_atlas::wall_atlas() noexcept = default;
wall_atlas::~wall_atlas() noexcept = default;
Vector2ui wall_atlas::expected_size(unsigned depth, Group_ group)
{
constexpr auto size = Vector3ui{iTILE_SIZE};
constexpr auto half_tile = size.x()/2u;
static_assert(size.x() == size.y());
fm_assert(depth > 0 && depth < 1<<15);
CORRADE_ASSUME(group < Group_::COUNT);
switch (group)
{
using enum Group_;
case wall:
return { size.x(), size.z() };
case top:
case side:
return { depth, size.z() };
case corner_L:
return { half_tile, size.z() };
case corner_R:
return { size.x() - half_tile, size.z() };
default:
fm_assert(false);
}
}
wall_atlas::wall_atlas(wall_atlas_def def, String path, const ImageView2D& img)
: _dir_array{std::move(def.direction_array)},
_frame_array{std::move(def.frames)},
_info{std::move(def.header)}, _path{std::move(path)},
_image_size{get_image_size(img)},
_direction_map{def.direction_map}
{
fm_soft_assert(!_frame_array.empty());
{
const auto frame_count = _frame_array.size();
bool found = false;
for (auto [dir_name, dir] : wall_atlas::directions)
{
const auto* D = direction((size_t)dir);
fm_soft_assert(def.direction_mask[(size_t)dir] == !!D);
if (!D)
continue;
for (auto [group_name, gmemb, gr] : Direction::groups)
{
const auto& G = D->*gmemb;
fm_soft_assert(!G.is_defined == !G.count);
fm_soft_assert(G.is_defined == (G.index != (uint32_t)-1));
if (!G.is_defined)
continue;
found = true;
if (G.count == 0) [[unlikely]]
fm_throw("wall_atlas '{}' defined group {}/{} has no frames!"_cf,
_path, dir_name, group_name);
fm_soft_assert(G.index < frame_count && G.index + G.count <= frame_count);
const auto size = expected_size(_info.depth, gr);
for (const auto& frame : ArrayView { &_frame_array[G.index], G.count })
{
fm_soft_assert(frame.size == size);
fm_soft_assert(frame.offset + frame.size <= _image_size);
}
}
}
if (!found) [[unlikely]]
fm_throw("wall_atlas '{}' is empty!"_cf, _path);
}
_texture.setLabel(_path)
.setWrapping(GL::SamplerWrapping::ClampToEdge)
.setMagnificationFilter(GL::SamplerFilter::Nearest)
.setMinificationFilter(GL::SamplerFilter::Linear)
.setMaxAnisotropy(1) // todo?
.setBorderColor(Color4{1, 0, 0, 1})
.setStorage(1, GL::textureFormat(img.format()), img.size())
.setSubImage(0, {}, img);
}
auto wall_atlas::get_Direction(Direction_ num) const -> Direction*
{
fm_debug_assert(num < Direction_::COUNT);
if (auto DAI = _direction_map[(uint8_t)num])
return const_cast<Direction*>(&_dir_array[DAI.val]);
else [[unlikely]]
return {};
}
auto wall_atlas::frames(const Group& group) const -> ArrayView<const Frame>
{
if (_frame_array.empty()) [[unlikely]]
return {};
const auto size = _frame_array.size(); (void)size;
const auto index = group.index, count = group.count;
fm_assert(index < size && index <= index + count && index + count <= size);
return { &_frame_array[index], count };
}
auto wall_atlas::frames(Direction_ dir, Group_ gr) const -> ArrayView<const Frame>
{
const auto* D = get_Direction(dir);
if (!D) [[unlikely]]
fm_throw("no such direction: {}"_cf, (int)dir);
const auto* G = group(*D, gr);
if (!G) [[unlikely]]
fm_throw("no such group {} for direction {}"_cf, (int)gr, (int)dir);
return { _frame_array.data() + G->index, G->count };
}
auto wall_atlas::group(Direction_ dir, Group_ gr) const -> const Group* { return group((size_t)dir, (size_t)gr); }
auto wall_atlas::group(size_t dir, Group_ gr) const -> const Group* { return group(dir, (size_t)gr); }
auto wall_atlas::group(size_t dir, size_t group) const -> const Group*
{
fm_assert(group < (size_t)Group_::COUNT);
const auto* const set_ = direction(dir);
if (!set_)
return {};
const auto& set = *set_;
const auto memfn = set.groups[group].member;
const Group& ret = set.*memfn;
#if 0
if (ret.is_empty())
return {};
#endif
return &ret;
}
auto wall_atlas::group(const Direction& dir, Group_ tag) const -> const Group*
{
fm_assert(tag < Group_::COUNT);
const auto memfn = dir.groups[(size_t)tag].member;
const Group& ret = dir.*memfn;
if (!ret.is_defined)
return {};
#if 0
if (ret.is_empty())
return {};
#endif
return &ret;
}
auto wall_atlas::direction(size_t dir) const -> const Direction* { return get_Direction(Direction_(dir)); }
auto wall_atlas::direction(Direction_ dir) const -> const Direction* { return get_Direction(dir); }
auto wall_atlas::calc_direction(Direction_ dir) const -> const Direction&
{
if (auto dai = _direction_map[(size_t)dir]) [[likely]]
return _dir_array[dai.val];
CORRADE_ASSUME(dir < Direction_::COUNT);
switch (dir)
{
case Direction_::N:
if (auto dai = _direction_map[(size_t)Direction_::W])
return _dir_array[dai.val];
break;
case Direction_::W:
if (auto dai = _direction_map[(size_t)Direction_::N])
return _dir_array[dai.val];
break;
case Direction_::COUNT:
std::unreachable();
break;
}
fm_abort("wall_atlas: can't find direction '%d'", (int)dir);
}
uint8_t wall_atlas::direction_count() const { return (uint8_t)_dir_array.size(); }
auto wall_atlas::raw_frame_array() const -> ArrayView<const Frame> { return _frame_array; }
GL::Texture2D& wall_atlas::texture() { fm_debug_assert(_texture.id()); return _texture; }
Vector2ui wall_atlas::image_size() const { return _image_size; }
size_t wall_atlas::enum_to_index(enum rotation r)
{
static_assert(rotation_COUNT == rotation{8});
fm_debug_assert(r < rotation_COUNT);
auto x = uint8_t(r);
x >>= 1;
return x;
}
} // namespace floormat
namespace floormat::Wall {
const Group& Direction::group(Group_ i) const { return const_cast<Direction&>(*this).group((size_t)i); }
const Group& Direction::group(size_t i) const { return const_cast<Direction&>(*this).group(i); }
Group& Direction::group(Group_ i) { return group((size_t)i); }
Group& Direction::group(size_t i)
{
fm_assert(i < Group_COUNT);
auto ptr = groups[i].member;
return this->*ptr;
}
bool Frame::operator==(const Frame&) const noexcept = default;
bool Direction::operator==(const Direction&) const noexcept = default;
bool Info::operator==(const floormat::Wall::Info&) const noexcept = default;
bool DirArrayIndex::operator==(const floormat::Wall::DirArrayIndex&) const noexcept = default;
#if 1
bool Group::operator==(const Group&) const noexcept = default;
#else
bool Group::operator==(const Group& other) const noexcept
{
bool ret = index == other.index && count == other.count &&
pixel_size == other.pixel_size &&
mirrored == other.mirrored && default_tint == other.default_tint;
if (!ret)
return ret;
constexpr auto eps = 1e-5f;
if (auto diff = Math::abs(Vector4(tint_mult) - Vector4(other.tint_mult)).sum(); diff > eps)
return false;
if (auto diff = Math::abs(Vector3(tint_add) - Vector3(other.tint_add)).sum(); diff > eps)
return false;
return true;
}
#endif
} // namespace floormat::Wall
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