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#include "wall-atlas.hpp"
#include "compat/assert.hpp"
#include <utility>
#include <Magnum/ImageView.h>
#include <Magnum/GL/TextureFormat.h>
namespace floormat {
size_t wall_atlas::enum_to_index(enum rotation r)
{
fm_debug_assert(r < rotation_COUNT);
auto x = uint8_t(r);
x >>= 1;
return x;
}
wall_atlas::wall_atlas(wall_info info, const ImageView2D& image,
ArrayView<const wall_frame_set> rotations,
ArrayView<const wall_frame> frames) :
_array{NoInit, frames.size()}, _info(std::move(info))
{
fm_assert(info.depth > 0);
fm_assert(rotations.size() <= _rotations.size());
_rotation_count = (uint8_t)rotations.size();
for (auto i = 0uz; const auto& fr : frames)
_array[i++] = fr;
for (auto i = 0uz; const auto& r : rotations)
_rotations[i++] = r;
_texture.setLabel(_name)
.setWrapping(GL::SamplerWrapping::ClampToEdge)
.setMagnificationFilter(GL::SamplerFilter::Nearest)
.setMinificationFilter(GL::SamplerFilter::Linear)
.setMaxAnisotropy(1)
.setBorderColor(Color4{1, 0, 0, 1})
.setStorage(1, GL::textureFormat(image.format()), image.size())
.setSubImage(0, {}, image);
}
wall_atlas::wall_atlas() = default;
wall_atlas::~wall_atlas() noexcept = default;
const wall_frame_set& wall_atlas::frameset(size_t i) const { return _rotations[i]; }
const wall_frame_set& wall_atlas::frameset(enum rotation r) const { return frameset(enum_to_index(r)); }
const ArrayView<const wall_frame> wall_atlas::array() const { return _array; }
StringView wall_atlas::name() const { return _info.name; }
ArrayView<const wall_frame> wall_frames::items(const wall_atlas& a) const
{
fm_assert(index < a.array().size());
fm_debug_assert(count != (uint32_t)-1);
return { a.array() + index, count };
}
} // namespace floormat
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