326 lines
7.4 KiB
C++
326 lines
7.4 KiB
C++
// Copyright (c) 1999
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// Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland),
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// INRIA Sophia-Antipolis (France),
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// Max-Planck-Institute Saarbruecken (Germany),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org)
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/Kernel_23/include/CGAL/Point_3.h $
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// $Id: Point_3.h 3ebe883 2020-03-01T12:50:13+01:00 Marc Glisse
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// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
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//
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//
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// Author(s) : Andreas Fabri, Stefan Schirra
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#ifndef CGAL_POINT_3_H
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#define CGAL_POINT_3_H
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#include <CGAL/Origin.h>
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#include <CGAL/representation_tags.h>
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#include <CGAL/assertions.h>
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#include <boost/type_traits/is_same.hpp>
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#include <CGAL/Kernel/Return_base_tag.h>
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#include <CGAL/Bbox_3.h>
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#include <CGAL/Dimension.h>
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namespace CGAL {
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template <class R_>
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class Point_3 : public R_::Kernel_base::Point_3
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{
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typedef typename R_::RT RT;
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typedef typename R_::Vector_3 Vector_3;
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typedef typename R_::Aff_transformation_3 Aff_transformation_3;
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typedef Point_3 Self;
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CGAL_static_assertion((boost::is_same<Self, typename R_::Point_3>::value));
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public:
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typedef Dimension_tag<3> Ambient_dimension;
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typedef Dimension_tag<0> Feature_dimension;
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typedef typename R_::Weighted_point_3 Weighted_point_3;
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typedef typename R_::Kernel_base::Point_3 Rep;
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typedef typename R_::Cartesian_const_iterator_3 Cartesian_const_iterator;
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const Rep& rep() const noexcept
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{
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return *this;
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}
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Rep& rep() noexcept
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{
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return *this;
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}
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typedef R_ R;
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Point_3() {}
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Point_3(const Origin& o)
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: Rep(typename R::Construct_point_3()(Return_base_tag(), o))
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{}
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Point_3(const Rep& p)
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: Rep(p) {}
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explicit
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Point_3(const Weighted_point_3& wp)
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: Rep(wp.point())
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{}
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template < typename T1, typename T2, typename T3 >
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Point_3(const T1& x, const T2& y, const T3& z)
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: Rep(typename R::Construct_point_3()(Return_base_tag(), x, y, z))
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{}
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Point_3(const RT& hx, const RT& hy, const RT& hz, const RT& hw)
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: Rep(typename R::Construct_point_3()(Return_base_tag(), hx, hy, hz, hw))
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{}
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friend void swap(Self& a, Self& b)
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#ifdef __cpp_lib_is_swappable
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noexcept(std::is_nothrow_swappable_v<Rep>)
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#endif
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{
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using std::swap;
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swap(a.rep(), b.rep());
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}
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typename cpp11::result_of<typename R::Compute_x_3( Point_3)>::type
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x() const
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{
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return typename R::Compute_x_3()(*this);
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}
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typename cpp11::result_of<typename R::Compute_y_3( Point_3)>::type
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y() const
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{
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return typename R::Compute_y_3()(*this);
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}
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typename cpp11::result_of<typename R::Compute_z_3( Point_3)>::type
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z() const
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{
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return typename R::Compute_z_3()(*this);
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}
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typename cpp11::result_of<typename R::Compute_hx_3( Point_3)>::type
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hx() const
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{
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return R().compute_hx_3_object()(*this);
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}
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typename cpp11::result_of<typename R::Compute_hy_3( Point_3)>::type
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hy() const
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{
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return R().compute_hy_3_object()(*this);
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}
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typename cpp11::result_of<typename R::Compute_hz_3( Point_3)>::type
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hz() const
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{
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return R().compute_hz_3_object()(*this);
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}
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typename cpp11::result_of<typename R::Compute_hw_3( Point_3)>::type
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hw() const
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{
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return R().compute_hw_3_object()(*this);
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}
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typename cpp11::result_of<typename R::Compute_x_3( Point_3)>::type
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cartesian(int i) const
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{
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CGAL_kernel_precondition( (i == 0) || (i == 1) || (i == 2) );
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if (i==0) return x();
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if (i==1) return y();
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return z();
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}
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RT
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homogeneous(int i) const
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{
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CGAL_kernel_precondition( (i >= 0) || (i <= 3) );
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if (i==0) return hx();
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if (i==1) return hy();
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if (i==2) return hz();
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return hw();
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}
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typename cpp11::result_of<typename R::Compute_x_3(Point_3)>::type
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operator[](int i) const
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{
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return cartesian(i);
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}
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Cartesian_const_iterator cartesian_begin() const
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{
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return typename R::Construct_cartesian_const_iterator_3()(*this);
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}
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Cartesian_const_iterator cartesian_end() const
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{
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return typename R::Construct_cartesian_const_iterator_3()(*this,3);
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}
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int dimension() const
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{
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return 3;
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}
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Bbox_3 bbox() const
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{
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return R().construct_bbox_3_object()(*this);
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}
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Point_3 transform(const Aff_transformation_3 &t) const
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{
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return t.transform(*this);
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}
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Point_3<R_>&
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operator+=(const Vector_3 &v)
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{
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*this = R().construct_translated_point_3_object()(*this, v);
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return *this;
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}
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Point_3<R_>&
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operator-=(const Vector_3 &v)
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{
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*this = R().construct_translated_point_3_object()(*this,
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R().construct_opposite_vector_3_object()(v));
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return *this;
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}
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};
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template <class R>
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inline
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bool
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operator==(const Origin& o, const Point_3<R>& p)
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{ return p == o; }
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template <class R>
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inline
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bool
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operator!=(const Origin& o, const Point_3<R>& p)
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{ return p != o; }
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template <class R >
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std::ostream&
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insert(std::ostream& os, const Point_3<R>& p,const Cartesian_tag&)
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{
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switch(get_mode(os)) {
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case IO::ASCII :
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return os << p.x() << ' ' << p.y() << ' ' << p.z();
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case IO::BINARY :
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write(os, p.x());
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write(os, p.y());
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write(os, p.z());
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return os;
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default:
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return os << "PointC3(" << p.x() << ", " << p.y()
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<< ", " << p.z() << ')';
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}
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}
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template <class R >
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std::ostream&
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insert(std::ostream& os, const Point_3<R>& p,const Homogeneous_tag&)
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{
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switch(get_mode(os))
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{
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case IO::ASCII :
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return os << p.hx() << ' ' << p.hy() << ' ' << p.hz() << ' ' << p.hw();
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case IO::BINARY :
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write(os, p.hx());
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write(os, p.hy());
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write(os, p.hz());
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write(os, p.hw());
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return os;
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default:
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return os << "PointH3(" << p.hx() << ", "
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<< p.hy() << ", "
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<< p.hz() << ", "
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<< p.hw() << ')';
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}
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}
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template < class R >
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std::ostream&
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operator<<(std::ostream& os, const Point_3<R>& p)
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{
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return insert(os, p, typename R::Kernel_tag() );
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}
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template <class R >
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std::istream&
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extract(std::istream& is, Point_3<R>& p, const Cartesian_tag&)
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{
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typename R::FT x(0), y(0), z(0);
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switch(get_mode(is)) {
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case IO::ASCII :
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is >> iformat(x) >> iformat(y) >> iformat(z);
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break;
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case IO::BINARY :
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read(is, x);
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read(is, y);
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read(is, z);
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break;
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default:
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is.setstate(std::ios::failbit);
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std::cerr << "" << std::endl;
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std::cerr << "Stream must be in ascii or binary mode" << std::endl;
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break;
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}
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if (is)
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p = Point_3<R>(x, y, z);
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return is;
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}
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template <class R >
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std::istream&
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extract(std::istream& is, Point_3<R>& p, const Homogeneous_tag&)
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{
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typename R::RT hx, hy, hz, hw;
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switch(get_mode(is))
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{
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case IO::ASCII :
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is >> hx >> hy >> hz >> hw;
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break;
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case IO::BINARY :
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read(is, hx);
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read(is, hy);
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read(is, hz);
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read(is, hw);
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break;
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default:
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is.setstate(std::ios::failbit);
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std::cerr << "" << std::endl;
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std::cerr << "Stream must be in ascii or binary mode" << std::endl;
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break;
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}
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if (is)
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p = Point_3<R>(hx, hy, hz, hw);
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return is;
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}
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template < class R >
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std::istream&
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operator>>(std::istream& is, Point_3<R>& p)
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{
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return extract(is, p, typename R::Kernel_tag() );
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}
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} //namespace CGAL
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#endif // CGAL_POINT_3_H
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