libnest2d::_Box< P > Class Template Reference

An abstraction of a box;. More...

#include <src/libnest2d/include/libnest2d/geometry_traits.hpp>

Inheritance diagram for libnest2d::_Box< P >:

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Public Types
using	Tag = BoxTag
using	PointType = P

Public Member Functions
	_Box (const P &center={TCoord< P >(0), TCoord< P >(0)})
	_Box (const P &p, const P &pp)
	_Box (TCoord< P > width, TCoord< P > height, const P &p={TCoord< P >(0), TCoord< P >(0)})
const P &	minCorner () const BP2D_NOEXCEPT
const P &	maxCorner () const BP2D_NOEXCEPT
P &	minCorner () BP2D_NOEXCEPT
P &	maxCorner () BP2D_NOEXCEPT
TCoord< P >	width () const BP2D_NOEXCEPT
TCoord< P >	height () const BP2D_NOEXCEPT
P	center () const BP2D_NOEXCEPT
template<class Unit = TCompute<P>>
Unit	area () const BP2D_NOEXCEPT

Static Public Member Functions
static _Box	infinite (const P &center={TCoord< P >(0), TCoord< P >(0)})

Private Attributes
P	p1
P	p2

Detailed Description

template<class P>
class libnest2d::_Box< P >

An abstraction of a box;.

Member Typedef Documentation

PointType

template<class P >

using libnest2d::_Box< P >::PointType = P

Tag

template<class P >

using libnest2d::_Box< P >::Tag = BoxTag

Constructor & Destructor Documentation

_Box() [1/3]

template<class P >

libnest2d::_Box< P >::_Box ( const P &  center = {TCoord<P>(0), TCoord<P>(0)} )

inline

                                  {TCoord<P>(0), TCoord<P>(0)}):
        _Box(TCoord<P>(0), TCoord<P>(0), center) {}

_Box() [2/3]

template<class P >

libnest2d::_Box< P >::_Box ( const P &  p, const P &  pp  )

inline

                                        :
        PointPair<P>({p, pp}) {}

_Box() [3/3]

template<class P >

libnest2d::_Box< P >::_Box ( TCoord< P >  width, TCoord< P >  height, const P &  p = {TCoord<P>(0), TCoord<P>(0)}  )

inline

                                                                        :
    PointPair<P>({center - P{width / 2, height / 2},
                  center + P{width / 2, height / 2} +
                      P{modulo(width, TCoord<P>(2)),
                        modulo(height, TCoord<P>(2))}}) {}

References libnest2d::_Box< P >::center(), libnest2d::_Box< P >::height(), libnest2d::modulo(), and libnest2d::_Box< P >::width().

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Member Function Documentation

area()

template<class P >

template<class Unit = TCompute<P>>

Unit libnest2d::_Box< P >::area ( ) const

inline

                                           {
        constexpr TCoord<P> Zero{0};
        Unit s = width() < Zero || height() < Zero ? Unit(-1) : Unit(1);
        return s * libnest2d::abs(Unit(width()) * height());
    }

References libnest2d::abs(), libnest2d::_Box< P >::height(), and libnest2d::_Box< P >::width().

Referenced by Slic3r::arrangement::fixed_overfit().

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center()

template<class P >

P libnest2d::_Box< P >::center

inline

                                             {
    auto& minc = minCorner();
    auto& maxc = maxCorner();
 
    using Coord = TCoord<P>;
 
    P ret = { // No rounding here, we dont know if these are int coords
        // Doing the division like this increases the max range of x and y coord
        getX(minc) / Coord(2) + getX(maxc) / Coord(2),
        getY(minc) / Coord(2) + getY(maxc) / Coord(2)
    };
 
    return ret;
}

References libnest2d::getX(), and libnest2d::getY().

Referenced by libnest2d::_Box< P >::_Box(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::finalAlign(), Slic3r::arrangement::AutoArranger< TBin >::objfunc(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::overfit(), and libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::setInitialPosition().

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height()

template<class P >

TCoord< P > libnest2d::_Box< P >::height

inline

{
    return pointlike::y(maxCorner()) - pointlike::y(minCorner());
}

References libnest2d::pointlike::y().

Referenced by libnest2d::_Box< P >::_Box(), libnest2d::placers::_BottomLeftPlacer< RawShape >::_trypack(), libnest2d::_Box< P >::area(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::overfit(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::overfit(), and libnest2d::svg::SVGWriter< RawShape >::setSize().

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infinite()

template<class P >

_Box< P > libnest2d::_Box< P >::infinite ( const P &  center = {TCoord<P>(0), TCoord<P>(0)} )

inlinestatic

                                                {
    using C = TCoord<P>;
    _Box<P> ret;
    
    // It is important for Mx and My to be strictly less than half of the
    // range of type C. width(), height() and area() will not overflow this way.
    C Mx = C((std::numeric_limits<C>::lowest() + 2 * getX(center)) / 4.01);
    C My = C((std::numeric_limits<C>::lowest() + 2 * getY(center)) / 4.01);
    
    ret.maxCorner() = center - P{Mx, My};
    ret.minCorner() = center + P{Mx, My};
    
    return ret;
}

References libnest2d::getX(), libnest2d::getY(), libnest2d::_Box< P >::maxCorner(), and libnest2d::_Box< P >::minCorner().

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maxCorner() [1/2]

template<class P >

P & libnest2d::_Box< P >::maxCorner ( )

inline

{ return p2; }

References libnest2d::PointPair< P >::p2.

maxCorner() [2/2]

template<class P >

const P & libnest2d::_Box< P >::maxCorner ( ) const

inline

{ return p2; }

References libnest2d::PointPair< P >::p2.

Referenced by libnest2d::shapelike::boundingBox(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::finalAlign(), boost::geometry::traits::indexed_access< bp2d::Box, max_corner, 0 >::get(), boost::geometry::traits::indexed_access< bp2d::Box, max_corner, 1 >::get(), libnest2d::_Box< P >::infinite(), libnest2d::shapelike::offset(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::overfit(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::placeOutsideOfBin(), boost::geometry::traits::indexed_access< bp2d::Box, max_corner, 0 >::set(), boost::geometry::traits::indexed_access< bp2d::Box, max_corner, 1 >::set(), libnest2d::placers::_BottomLeftPlacer< RawShape >::setInitialPosition(), and libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::setInitialPosition().

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minCorner() [1/2]

template<class P >

P & libnest2d::_Box< P >::minCorner ( )

inline

{ return p1; }

References libnest2d::PointPair< P >::p1.

minCorner() [2/2]

template<class P >

const P & libnest2d::_Box< P >::minCorner ( ) const

inline

{ return p1; }

References libnest2d::PointPair< P >::p1.

Referenced by libnest2d::shapelike::boundingBox(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::finalAlign(), boost::geometry::traits::indexed_access< bp2d::Box, min_corner, 0 >::get(), boost::geometry::traits::indexed_access< bp2d::Box, min_corner, 1 >::get(), libnest2d::_Box< P >::infinite(), libnest2d::shapelike::offset(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::overfit(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::overfit(), boost::geometry::traits::indexed_access< bp2d::Box, min_corner, 0 >::set(), boost::geometry::traits::indexed_access< bp2d::Box, min_corner, 1 >::set(), and libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::setInitialPosition().

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width()

template<class P >

TCoord< P > libnest2d::_Box< P >::width

inline

{
    return pointlike::x(maxCorner()) - pointlike::x(minCorner());
}

References libnest2d::pointlike::x().

Referenced by libnest2d::_Box< P >::_Box(), libnest2d::placers::_BottomLeftPlacer< RawShape >::_trypack(), libnest2d::_Box< P >::area(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::overfit(), libnest2d::placers::_NofitPolyPlacer< RawShape, TBin >::overfit(), and libnest2d::svg::SVGWriter< RawShape >::setSize().

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Member Data Documentation

p1

template<class P >

P libnest2d::PointPair< P >::p1

inherited

Referenced by libnest2d::_Segment< P >::first(), libnest2d::_Segment< P >::first(), libnest2d::_Box< P >::minCorner(), and libnest2d::_Box< P >::minCorner().

p2

template<class P >

P libnest2d::PointPair< P >::p2

inherited

Referenced by libnest2d::_Box< P >::maxCorner(), libnest2d::_Box< P >::maxCorner(), libnest2d::_Segment< P >::second(), and libnest2d::_Segment< P >::second().

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The documentation for this class was generated from the following file:

• src/libnest2d/include/libnest2d/geometry_traits.hpp