107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
#include "MinAreaBoundingBox.hpp"
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#include <libslic3r/ExPolygon.hpp>
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#if defined(_MSC_VER) && defined(__clang__)
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#define BOOST_NO_CXX17_HDR_STRING_VIEW
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#endif
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#include <boost/rational.hpp>
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#include <libslic3r/Int128.hpp>
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#if !defined(HAS_INTRINSIC_128_TYPE) || defined(__APPLE__)
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#include <boost/multiprecision/integer.hpp>
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#endif
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#include <libnest2d/backends/libslic3r/geometries.hpp>
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#include <libnest2d/utils/rotcalipers.hpp>
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namespace Slic3r {
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// Used as compute type.
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using Unit = int64_t;
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#if !defined(HAS_INTRINSIC_128_TYPE) || defined(__APPLE__)
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using Rational = boost::rational<boost::multiprecision::int128_t>;
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#else
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using Rational = boost::rational<__int128>;
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#endif
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template<class P>
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libnest2d::RotatedBox<Point, Unit> minAreaBoundigBox_(
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const P &p, MinAreaBoundigBox::PolygonLevel lvl)
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{
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P chull = lvl == MinAreaBoundigBox::pcConvex ?
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p :
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libnest2d::sl::convexHull(p);
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libnest2d::removeCollinearPoints(chull);
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return libnest2d::minAreaBoundingBox<P, Unit, Rational>(chull);
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}
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MinAreaBoundigBox::MinAreaBoundigBox(const Polygon &p, PolygonLevel pc)
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{
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libnest2d::RotatedBox<Point, Unit> box = minAreaBoundigBox_(p, pc);
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m_right = libnest2d::cast<long double>(box.right_extent());
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m_bottom = libnest2d::cast<long double>(box.bottom_extent());
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m_axis = box.axis();
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}
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MinAreaBoundigBox::MinAreaBoundigBox(const ExPolygon &p, PolygonLevel pc)
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{
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libnest2d::RotatedBox<Point, Unit> box = minAreaBoundigBox_(p, pc);
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m_right = libnest2d::cast<long double>(box.right_extent());
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m_bottom = libnest2d::cast<long double>(box.bottom_extent());
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m_axis = box.axis();
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}
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MinAreaBoundigBox::MinAreaBoundigBox(const Points &pts, PolygonLevel pc)
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{
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libnest2d::RotatedBox<Point, Unit> box = minAreaBoundigBox_(pts, pc);
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m_right = libnest2d::cast<long double>(box.right_extent());
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m_bottom = libnest2d::cast<long double>(box.bottom_extent());
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m_axis = box.axis();
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}
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double MinAreaBoundigBox::angle_to_X() const
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{
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double ret = std::atan2(m_axis.y(), m_axis.x());
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auto s = std::signbit(ret);
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if (s) ret += 2 * PI;
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return -ret;
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}
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long double MinAreaBoundigBox::width() const
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{
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return std::abs(m_bottom) /
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std::sqrt(libnest2d::pl::magnsq<Point, long double>(m_axis));
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}
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long double MinAreaBoundigBox::height() const
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{
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return std::abs(m_right) /
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std::sqrt(libnest2d::pl::magnsq<Point, long double>(m_axis));
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}
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long double MinAreaBoundigBox::area() const
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{
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long double asq = libnest2d::pl::magnsq<Point, long double>(m_axis);
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return m_bottom * m_right / asq;
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}
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void remove_collinear_points(Polygon &p)
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{
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p = libnest2d::removeCollinearPoints<Polygon>(p, Unit(0));
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}
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void remove_collinear_points(ExPolygon &p)
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{
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p = libnest2d::removeCollinearPoints<ExPolygon>(p, Unit(0));
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}
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} // namespace Slic3r
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