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#include "hole.hpp"
//#include <mg/Functions.h>
namespace floormat {
using bbox = cut_rectangle_result::bbox;
namespace {
} // namespace
cut_rectangle_result cut_rectangle(cut_rectangle_result::bbox input, cut_rectangle_result::bbox hole)
{
const auto ihalf = Vector2i{input.bbox_size/2};
const auto istart = input.position - ihalf;
const auto iend = input.position + Vector2i{input.bbox_size} - ihalf;
const auto hhalf = Vector2i{hole.bbox_size/2};
const auto hstart = hole.position - hhalf;
const auto hend = hole.position + Vector2i{hole.bbox_size} - hhalf;
//std::atomic_signal_fence(std::memory_order::relaxed); // compiler-only barrier
{
bool iempty = Vector2ui{input.bbox_size}.product() == 0;
bool hempty = Vector2ui{hole.bbox_size}.product() == 0;
bool empty_before_x = hend.x() <= istart.x();
bool empty_before_y = hend.y() <= istart.y();
bool empty_after_x = hstart.x() >= iend.x();
bool empty_after_y = hstart.y() >= iend.y();
if (iempty | hempty | empty_before_x | empty_before_y | empty_after_x | empty_after_y)
return {};
}
const bool sx = hstart.x() <= istart.x();
const bool ex = hend.x() >= iend.x();
const bool sy = hstart.y() <= istart.y();
const bool ey = hend.y() >= iend.y();
enum : uint8_t { SX, EX, SY, EY };
enum : uint8_t { startx = 1 << SX, endx = 1 << EX, starty = 1 << SY, endy = 1 << EY };
constexpr auto mask = uint8_t(startx | endx | starty | endy);
auto val = uint8_t(sx << SX | ex << EX | sy << SY | ey << EY);
CORRADE_ASSUME((val & mask) == val);
(void)val;
return {};
}
} // namespace floormat
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