mirror of https://github.com/CGAL/cgal
175 lines
4.3 KiB
C++
175 lines
4.3 KiB
C++
// Copyright (c) 1999 Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
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// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
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// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
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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); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; version 2.1 of the License.
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// See the file LICENSE.LGPL distributed with CGAL.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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//
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// Author(s) : Andreas Fabri, Stefan Schirra
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#ifndef CGAL_RAY_3_H
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#define CGAL_RAY_3_H
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CGAL_BEGIN_NAMESPACE
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template <class R_>
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class Ray_3 : public R_::Kernel_base::Ray_3
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{
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typedef typename R_::RT RT;
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typedef typename R_::Point_3 Point_3;
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typedef typename R_::Direction_3 Direction_3;
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typedef typename R_::Vector_3 Vector_3;
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typedef typename R_::Line_3 Line_3;
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typedef typename R_::Aff_transformation_3 Aff_transformation_3;
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typedef typename R_::Kernel_base::Ray_3 RRay_3;
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public:
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typedef RRay_3 Rep;
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const Rep& rep() const
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{
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return *this;
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}
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Rep& rep()
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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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Ray_3() {}
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Ray_3(const RRay_3& r)
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: RRay_3(r) {}
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Ray_3(const Point_3& sp, const Point_3& secondp)
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: RRay_3(sp, secondp) {}
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Ray_3(const Point_3& sp, const Vector_3& v)
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: RRay_3(sp, v) {}
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Ray_3(const Point_3& sp, const Direction_3& d)
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: RRay_3(sp, d) {}
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Ray_3(const Point_3& sp, const Line_3& l)
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: RRay_3(sp, l) {}
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Ray_3 transform(const Aff_transformation_3 &t) const
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{
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return Ray_3(t.transform(this->source()),
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t.transform(this->second_point()));
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// NB : Homogeneous used direction() instead of second_point().
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}
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/*
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const Point_3 & start() const;
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const Point_3 & source() const
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{
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return get(base).e0;
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}
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Direction_3 direction() const;
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Vector_3 to_vector() const;
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Line_3 supporting_line() const;
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Ray_3 opposite() const;
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bool is_degenerate() const;
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bool collinear_has_on(const Point_3 &p) const;
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*/
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Point_3 point(int i) const // TODO : use Qrt
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{
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return R().construct_point_on_3_object()(*this, i);
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}
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// FIXME : Use Qrt
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//typename Qualified_result_of<typename R_::Construct_source_3, Ray_3 >::type
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Point_3
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source() const
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{
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return R().construct_source_3_object()(*this);
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}
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Point_3 second_point() const // TODO : use Qrt
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{
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return R().construct_second_point_3_object()(*this);
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}
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bool has_on(const Point_3 &p) const
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{
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return R().has_on_3_object()(*this, p);
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}
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Direction_3
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direction() const
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{
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typename R::Construct_vector_3 construct_vector;
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typename R::Construct_direction_3 construct_direction;
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return construct_direction( construct_vector(source(), second_point()) );
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}
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Ray_3
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opposite() const
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{
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return Ray_3( source(), - direction() );
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}
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Vector_3
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to_vector() const
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{
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typename R::Construct_vector_3 construct_vector;
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return construct_vector(source(), second_point());
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}
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Line_3
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supporting_line() const
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{
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return R().construct_line_3_object()(source(), second_point());
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}
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bool is_degenerate() const
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{
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return R().is_degenerate_3_object()(*this);
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}
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};
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#ifndef CGAL_NO_OSTREAM_INSERT_RAY_3
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template < class R >
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std::ostream&
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operator<<(std::ostream& os, const Ray_3<R>& r)
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{
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typedef typename R::Kernel_base::Ray_3 RRay_3;
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return os << static_cast<const RRay_3&>(r);
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}
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#endif // CGAL_NO_OSTREAM_INSERT_RAY_3
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#ifndef CGAL_NO_ISTREAM_EXTRACT_RAY_3
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template < class R >
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std::istream&
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operator>>(std::istream& is, Ray_3<R>& r)
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{
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typedef typename R::Kernel_base::Ray_3 RRay_3;
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return is >> static_cast<RRay_3&>(r);
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}
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#endif // CGAL_NO_ISTREAM_EXTRACT_RAY_3
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CGAL_END_NAMESPACE
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#endif // CGAL_RAY_3_H
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