147 lines
3.4 KiB
C++
147 lines
3.4 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/Triangle_3.h $
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// $Id: Triangle_3.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
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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_TRIANGLE_3_H
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#define CGAL_TRIANGLE_3_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 Triangle_3 : public R_::Kernel_base::Triangle_3
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{
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typedef typename R_::RT RT;
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typedef typename R_::FT FT;
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typedef typename R_::Point_3 Point_3;
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typedef typename R_::Plane_3 Plane_3;
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typedef typename R_::Aff_transformation_3 Aff_transformation_3;
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typedef Triangle_3 Self;
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CGAL_static_assertion((boost::is_same<Self, typename R_::Triangle_3>::value));
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public:
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typedef Dimension_tag<3> Ambient_dimension;
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typedef Dimension_tag<2> Feature_dimension;
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typedef typename R_::Kernel_base::Triangle_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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Triangle_3() {}
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Triangle_3(const Rep& t)
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: Rep(t) {}
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Triangle_3(const Point_3& p, const Point_3& q, const Point_3& r)
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: Rep(typename R::Construct_triangle_3()(Return_base_tag(), p, q, r)) {}
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Triangle_3 transform(const Aff_transformation_3 &t) const
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{
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return Triangle_3(t.transform(this->vertex(0)),
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t.transform(this->vertex(1)),
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t.transform(this->vertex(2)));
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}
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Plane_3 supporting_plane() const
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{
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return R().construct_supporting_plane_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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typename cpp11::result_of<typename R::Construct_vertex_3( Triangle_3, int )>::type
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vertex(int i) const
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{
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return R().construct_vertex_3_object()(*this, i);
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}
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typename cpp11::result_of<typename R::Construct_vertex_3( Triangle_3, int )>::type
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operator[](int i) const
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{
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return vertex(i);
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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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Bbox_3
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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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FT squared_area() const // TODO : use Qrt
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{
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return R().compute_squared_area_3_object()(*this);
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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 Triangle_3<R> &t)
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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 << t[0] << ' ' << t[1] << ' ' << t[2];
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case IO::BINARY :
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return os << t[0] << t[1] << t[2];
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default:
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os << "Triangle_3(" << t[0] << ", " << t[1] << ", " << t[2] <<")";
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return os;
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}
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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, Triangle_3<R> &t)
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{
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typename R::Point_3 p, q, r;
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is >> p >> q >> r;
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if (is)
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t = Triangle_3<R>(p, q, r);
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return is;
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}
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} //namespace CGAL
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#endif // CGAL_TRIANGLE_3_H
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