298 lines
7.0 KiB
C
298 lines
7.0 KiB
C
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// Copyright (c) 1999,2004
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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); 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; either version 3 of the License,
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// or (at your option) any later version.
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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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// SPDX-License-Identifier: LGPL-3.0+
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//
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// Author(s) : Andreas Fabri
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#ifndef CGAL_BBOX_3_H
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#define CGAL_BBOX_3_H
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#include <CGAL/config.h>
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#include <CGAL/kernel_assertions.h>
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#include <CGAL/result_of.h>
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#include <CGAL/IO/io.h>
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#include <CGAL/Dimension.h>
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#include <CGAL/array.h>
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#include <boost/math/special_functions/next.hpp>
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namespace CGAL {
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template < typename T >
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struct Simple_cartesian;
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class Bbox_3
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{
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cpp11::array<double, 6> rep;
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public:
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typedef Dimension_tag<3> Ambient_dimension;
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typedef Dimension_tag<3> Feature_dimension;
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typedef Simple_cartesian<double> R;
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Bbox_3()
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: rep(CGAL::make_array( std::numeric_limits<double>::infinity(),
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std::numeric_limits<double>::infinity(),
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std::numeric_limits<double>::infinity(),
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- std::numeric_limits<double>::infinity(),
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- std::numeric_limits<double>::infinity(),
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- std::numeric_limits<double>::infinity() ))
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{}
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Bbox_3(double x_min, double y_min, double z_min,
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double x_max, double y_max, double z_max)
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: rep(CGAL::make_array(x_min, y_min, z_min, x_max, y_max, z_max))
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{}
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inline bool operator==(const Bbox_3 &b) const;
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inline bool operator!=(const Bbox_3 &b) const;
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inline int dimension() const;
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double xmin() const;
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double ymin() const;
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double zmin() const;
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double xmax() const;
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double ymax() const;
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double zmax() const;
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inline double min BOOST_PREVENT_MACRO_SUBSTITUTION (int i) const;
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inline double max BOOST_PREVENT_MACRO_SUBSTITUTION (int i) const;
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Bbox_3 operator+(const Bbox_3& b) const;
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Bbox_3& operator+=(const Bbox_3& b);
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void dilate(int dist);
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};
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inline
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double
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Bbox_3::xmin() const
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{ return rep[0]; }
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inline
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double
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Bbox_3::ymin() const
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{ return rep[1]; }
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inline
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double
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Bbox_3::zmin() const
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{ return rep[2]; }
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inline
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double
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Bbox_3::xmax() const
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{ return rep[3]; }
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inline
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double
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Bbox_3::ymax() const
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{ return rep[4]; }
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inline
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double
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Bbox_3::zmax() const
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{ return rep[5]; }
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inline
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bool
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Bbox_3::operator==(const Bbox_3 &b) const
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{
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return xmin() == b.xmin() && xmax() == b.xmax()
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&& ymin() == b.ymin() && ymax() == b.ymax()
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&& zmin() == b.zmin() && zmax() == b.zmax();
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}
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inline
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bool
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Bbox_3::operator!=(const Bbox_3 &b) const
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{
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return ! (b == *this);
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}
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inline
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int
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Bbox_3::dimension() const
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{ return 3; }
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inline
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double
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Bbox_3::min BOOST_PREVENT_MACRO_SUBSTITUTION (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 xmin(); }
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if (i == 1) { return ymin(); }
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return zmin();
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}
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inline
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double
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Bbox_3::max BOOST_PREVENT_MACRO_SUBSTITUTION (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 xmax(); }
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if (i == 1) { return ymax(); }
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return zmax();
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}
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inline
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Bbox_3
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Bbox_3::operator+(const Bbox_3& b) const
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{
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return Bbox_3((std::min)(xmin(), b.xmin()),
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(std::min)(ymin(), b.ymin()),
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(std::min)(zmin(), b.zmin()),
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(std::max)(xmax(), b.xmax()),
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(std::max)(ymax(), b.ymax()),
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(std::max)(zmax(), b.zmax()));
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}
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inline
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Bbox_3&
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Bbox_3::operator+=(const Bbox_3& b)
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{
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rep[0] = (std::min)(xmin(), b.xmin());
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rep[1] = (std::min)(ymin(), b.ymin());
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rep[2] = (std::min)(zmin(), b.zmin());
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rep[3] = (std::max)(xmax(), b.xmax());
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rep[4] = (std::max)(ymax(), b.ymax());
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rep[5] = (std::max)(zmax(), b.zmax());
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return *this;
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}
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inline
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void
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Bbox_3::dilate(int dist)
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{
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using boost::math::float_advance;
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rep[0] = float_advance(rep[0],-dist);
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rep[1] = float_advance(rep[1],-dist);
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rep[2] = float_advance(rep[2],-dist);
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rep[3] = float_advance(rep[3],dist);
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rep[4] = float_advance(rep[4],dist);
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rep[5] = float_advance(rep[5],dist);
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}
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inline
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bool
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do_overlap(const Bbox_3& bb1, const Bbox_3& bb2)
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{
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// check for emptiness ??
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if (bb1.xmax() < bb2.xmin() || bb2.xmax() < bb1.xmin())
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return false;
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if (bb1.ymax() < bb2.ymin() || bb2.ymax() < bb1.ymin())
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return false;
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if (bb1.zmax() < bb2.zmin() || bb2.zmax() < bb1.zmin())
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return false;
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return true;
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}
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inline
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std::ostream&
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operator<<(std::ostream &os, const Bbox_3& b)
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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 << b.xmin() << ' ' << b.ymin() << ' ' << b.zmin()
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<< ' ' << b.xmax() << ' ' << b.ymax() << ' ' << b.zmax();
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case IO::BINARY :
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write(os, b.xmin());
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write(os, b.ymin());
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write(os, b.zmin());
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write(os, b.xmax());
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write(os, b.ymax());
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write(os, b.zmax());
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return os;
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case IO::PRETTY :
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default:
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os << "Bbox_3((" << b.xmin()
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<< ", " << b.ymin()
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<< ", " << b.zmin() << "), (";
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os << b.xmax()
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<< ", " << b.ymax()
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<< ", " << b.zmax() << "))";
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return os;
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}
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}
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inline
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std::istream&
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operator>>(std::istream &is, Bbox_3& b)
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{
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double xmin = 0;
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double ymin = 0;
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double zmin = 0;
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double xmax = 0;
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double ymax = 0;
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double zmax = 0;
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switch(get_mode(is))
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{
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case IO::ASCII :
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is >> iformat(xmin) >> iformat(ymin) >> iformat(zmin)
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>> iformat(xmax) >> iformat(ymax) >> iformat(zmax);
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break;
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case IO::BINARY :
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read(is, xmin);
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read(is, ymin);
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read(is, zmin);
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read(is, xmax);
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read(is, ymax);
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read(is, zmax);
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break;
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case IO::PRETTY :
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break;
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}
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if (is)
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b = Bbox_3(xmin, ymin, zmin, xmax, ymax, zmax);
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return is;
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}
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template <class Input_iterator, class Traits>
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Bbox_3 bbox_3(Input_iterator begin, Input_iterator end, const Traits& traits)
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{
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if (begin==end) return Bbox_3();
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typename Traits::Construct_bbox_3 get_bbox = traits.construct_bbox_3_object();
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Bbox_3 res = get_bbox( *begin );
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for (++begin; begin!=end; ++begin)
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res += get_bbox( *begin );
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return res;
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}
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template <class Input_iterator>
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Bbox_3 bbox_3(Input_iterator begin, Input_iterator end)
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{
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if (begin==end) return Bbox_3();
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Bbox_3 res = begin->bbox();
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for (++begin; begin!=end; ++begin)
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res += begin->bbox();
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return res;
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}
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} //namespace CGAL
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#endif // CGAL_BBOX_3_H
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