247 lines
7.9 KiB
C++
247 lines
7.9 KiB
C++
// Copyright (c) 1997-2002 Max-Planck-Institute Saarbruecken (Germany).
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// 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/Nef_3/include/CGAL/Nef_3/SHalfedge.h $
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// $Id: SHalfedge.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
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// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
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//
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//
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// Author(s) : Michael Seel <seel@mpi-sb.mpg.de>
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// Miguel Granados <granados@mpi-sb.mpg.de>
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// Susan Hert <hert@mpi-sb.mpg.de>
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// Lutz Kettner <kettner@mpi-sb.mpg.de>
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// Peter Hachenberger <hachenberger@mpi-sb.mpg.de>
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#ifndef CGAL_NEF_SHALFEDGE_H
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#define CGAL_NEF_SHALFEDGE_H
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#include <CGAL/license/Nef_3.h>
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#include <string>
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#include <sstream>
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#include <CGAL/IO/Verbose_ostream.h>
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#include <CGAL/Nef_3/SNC_iteration.h>
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#undef CGAL_NEF_DEBUG
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#define CGAL_NEF_DEBUG 83
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#include <CGAL/Nef_2/debug.h>
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#ifndef CGAL_I_DO_WANT_TO_USE_GENINFO
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#include <boost/any.hpp>
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#endif
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namespace CGAL {
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template <typename Refs>
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class SHalfedge_base {
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#ifdef CGAL_I_DO_WANT_TO_USE_GENINFO
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typedef void* GenPtr;
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#else
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typedef boost::any GenPtr;
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#endif
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typedef typename Refs::Mark Mark;
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typedef typename Refs::Sphere_circle Sphere_circle;
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typedef typename Refs::Halfedge_handle Halfedge_handle;
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typedef typename Refs::Halfedge_const_handle Halfedge_const_handle;
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typedef typename Refs::SVertex_handle SVertex_handle;
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typedef typename Refs::SVertex_const_handle SVertex_const_handle;
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typedef typename Refs::SHalfedge_handle SHalfedge_handle;
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typedef typename Refs::SHalfedge_const_handle SHalfedge_const_handle;
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typedef typename Refs::SFace_handle SFace_handle;
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typedef typename Refs::SFace_const_handle SFace_const_handle;
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typedef typename Refs::Halffacet_handle Halffacet_handle;
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typedef typename Refs::Halffacet_const_handle Halffacet_const_handle;
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typedef typename Refs::SHalfedge_around_facet_circulator
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SHalfedge_around_facet_circulator;
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typedef typename Refs::SHalfedge_around_sface_circulator
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SHalfedge_around_sface_circulator;
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// Role within local graph:
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SVertex_handle source_;
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SHalfedge_handle sprev_, snext_;
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SFace_handle incident_sface_;
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SHalfedge_handle twin_;
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// Topology within global Nef structure:
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SHalfedge_handle prev_, next_;
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Halffacet_handle facet_;
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GenPtr info_;
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// temporary needed:
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Mark mark_;
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Sphere_circle circle_;
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public:
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SHalfedge_base() : source_(), sprev_(), snext_(),
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incident_sface_(), twin_(),
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prev_(), next_(), facet_(),
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info_(), mark_(), circle_() {}
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~SHalfedge_base() {
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CGAL_NEF_TRACEN(" destroying SHalfedge_base item "<<&*this);
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}
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SHalfedge_base(const SHalfedge_base<Refs>& e)
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{
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source_ = e.source_;
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sprev_ = e.sprev_;
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snext_ = e.snext_;
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incident_sface_ = e.incident_sface_;
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twin_ = e.twin_;
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prev_ = e.prev_;
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next_ = e.next_;
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facet_ = e.facet_;
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info_ = 0;
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mark_ = e.mark_;
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circle_ = e.circle_;
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}
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SHalfedge_base<Refs>& operator=(const SHalfedge_base<Refs>& e)
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{
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source_ = e.source_;
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sprev_ = e.sprev_;
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snext_ = e.snext_;
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incident_sface_ = e.incident_sface_;
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twin_ = e.twin_;
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prev_ = e.prev_;
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next_ = e.next_;
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facet_ = e.facet_;
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info_ = 0;
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mark_ = e.mark_;
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circle_ = e.circle_;
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return *this;
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}
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Mark& mark() { return mark_; }
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const Mark& mark() const { return mark_; }
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SHalfedge_handle& twin() { return twin_; }
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SHalfedge_const_handle twin() const { return twin_; }
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SVertex_handle& source() { return source_; }
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SVertex_const_handle source() const { return source_; }
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SVertex_handle& target() { return twin()->source(); }
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SVertex_const_handle target() const { return twin()->source(); }
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SHalfedge_handle& prev() { return prev_; }
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SHalfedge_const_handle prev() const { return prev_; }
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SHalfedge_handle& next() { return next_; }
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SHalfedge_const_handle next() const { return next_; }
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SHalfedge_handle& sprev() { return sprev_; }
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SHalfedge_const_handle sprev() const { return sprev_; }
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SHalfedge_handle& snext() { return snext_; }
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SHalfedge_const_handle snext() const { return snext_; }
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SHalfedge_handle& cyclic_adj_succ()
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{ return sprev()->twin(); }
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SHalfedge_const_handle cyclic_adj_succ() const
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{ return sprev()->twin(); }
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SHalfedge_handle& cyclic_adj_pred(SHalfedge_const_handle e)
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{ return e->twin()->snext(); }
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SHalfedge_const_handle cyclic_adj_pred(SHalfedge_const_handle e) const
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{ return e->twin()->snext(); }
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Sphere_circle& circle() { return circle_; }
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const Sphere_circle& circle() const { return circle_; }
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SFace_handle& incident_sface() { return incident_sface_; }
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SFace_const_handle incident_sface() const { return incident_sface_; }
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Halffacet_handle& facet() { return facet_; }
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Halffacet_const_handle facet() const { return facet_; }
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GenPtr& info() { return info_; }
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const GenPtr& info() const { return info_; }
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bool in_outer_facet_cycle() const {
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if(++facet()->facet_cycles_begin() ==
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facet()->facet_cycles_end()) return true;
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const Refs* sncp = source()->source()->sncp();
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SHalfedge_around_facet_circulator sfc(this), send(sfc);
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do {
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if(sncp()->is_boundary_item(sfc))
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break;
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} while(++sfc != send);
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CGAL_assertion(sncp()->is_boundary_item(sfc));
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if(sfc == facet()->facet_cycles_begin())
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return true;
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return false;
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}
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bool in_inner_facet_cycle() const {
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return !in_outer_facet_cycle();
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}
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bool in_outer_sface_cycle() const {
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if(++incident_sface()->sface_cycles_begin() ==
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incident_sface()->sface_cycles_end()) return true;
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const Refs* sncp = source()->source()->sncp();
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SHalfedge_around_sface_circulator sfc(this), send(sfc);
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do {
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if(sncp()->is_sm_boundary_item(sfc))
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break;
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} while(++sfc != send);
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CGAL_assertion(sncp()->is_sm_boundary_item(sfc));
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if(sfc == incident_sface()->sface_cycles_begin())
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return true;
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return false;
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}
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bool in_inner_sface_cycle() const {
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return !in_outer_sface_cycle();
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}
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std::string debug() const
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{ std::stringstream os;
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set_pretty_mode(os);
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os <<"e[ "<<source_->debug()<<", "
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<<twin_->source_->debug()
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#ifdef CGAL_I_DO_WANT_TO_USE_GENINFO
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<<" "<<info_
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#endif
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<<" ] ";
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return os.str();
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}
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bool is_twin() const { return (&*twin_ < this); }
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bool is_valid( bool verb = false, int level = 0) const {
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Verbose_ostream verr(verb);
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verr << "begin CGAL::SNC_items<...>::SHalfedge_base::is_valid( verb=true, "
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"level = " << level << "):" << std::endl;
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bool valid = (source_ != SVertex_handle() &&
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source_ != nullptr &&
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source_ != Halfedge_handle());
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valid = valid && (twin_ != SHalfedge_handle() && twin_ != nullptr);
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valid = valid && (sprev_ != SHalfedge_handle() && sprev_ != nullptr);
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valid = valid && (snext_ != SHalfedge_handle() && snext_ != nullptr);
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valid = valid && (prev_ != SHalfedge_handle() && prev_ != nullptr);
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valid = valid && (next_ != SHalfedge_handle() && next_ != nullptr);
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valid = valid && (incident_sface_ != SFace_handle() &&
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incident_sface_ != nullptr);
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valid = valid && (facet_ != Halffacet_handle() &&
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facet_ != nullptr);
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valid = valid && (circle_.d() == 0);
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valid = valid && (circle_.a() != 0 || circle_.b() != 0 || circle_.c() !=0);
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verr << "end of CGAL::SNC_items<...>::SHalfedge_base::is_valid(): structure is "
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<< ( valid ? "valid." : "NOT VALID.") << std::endl;
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return valid;
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}
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}; // SHalfedge_base
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} //namespace CGAL
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#endif //CGAL_NEF_SHALFEDGE_H
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