mirror of https://github.com/CGAL/cgal
1501 lines
47 KiB
C++
1501 lines
47 KiB
C++
// Copyright (c) 2010-2011 CNRS and LIRIS' Establishments (France).
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// 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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//
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// Author(s) : Guillaume Damiand <guillaume.damiand@liris.cnrs.fr>
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//
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#ifndef CGAL_COMBINATORIAL_MAP_OPERATIONS_H
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#define CGAL_COMBINATORIAL_MAP_OPERATIONS_H 1
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#include <CGAL/Combinatorial_map_basic_operations.h>
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#include <vector>
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#include <stack>
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namespace CGAL {
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/** @file Combinatorial_map_operations.h
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* Some operations to modify a combinatorial map.
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*/
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/** Insert a vertex in the given 2-cell which is splitted in triangles,
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* once for each inital edge of the facet.
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* @param amap the used combinatorial map.
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* @param adart a dart of the facet to triangulate.
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* @return A dart incident to the new vertex.
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*/
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// TODO revoir toute la gestion des attributs
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// (utilisation correcte des link avec/sans la maj)
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template < class Map >
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typename Map::Dart_handle
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insert_cell_0_in_cell_2(Map& amap, typename Map::Dart_handle adart)
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{
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CGAL_assertion(adart != NULL && adart!=Map::null_dart_handle);
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typename Map::Dart_handle first = adart, prev = NULL, cur = NULL;
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typename Map::Dart_handle n1 = NULL, n2 = NULL;
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typename Map::Dart_handle nn1 = NULL, nn2 = NULL;
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// If the facet is open, we search the dart 0-free
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while (!first->is_free(0) && first->beta(0) != adart)
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first = first->beta(0);
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// Stack of couple of dart and dimension for which
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// we must call on_split functor
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std::stack<internal::Couple_dart_and_dim<typename Map::Dart_handle> >
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tosplit;
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// Mark used to mark darts already treated.
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int treated = amap.get_new_mark();
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// Stack of marked darts
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std::stack<typename Map::Dart_handle> tounmark;
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// Now we run through the facet
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for (CGAL::CMap_dart_iterator_basic_of_orbit<Map,1> it(amap,first);
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it.cont();)
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{
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cur = it;
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++it;
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amap.mark(cur, treated);
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tounmark.push(cur);
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if ( cur!=first )
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{
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// TODO
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//if ( amap.template degroup_attribute_of_dart<2>(first, cur) )
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{
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// TODO Functor takiing a range, an attrib_handle, and that set
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// all the darts of the range to this handle
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/* for (typename Map::template Dart_of_involution_range<1>::iterator
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it=template darts_of_involution<1>(dh2).begin(),
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itend=template darts_of_involution<1>(dh2).end(); it!=itend;
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++it)
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{
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}*/
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tosplit.push(internal::Couple_dart_and_dim
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<typename Map::Dart_handle>
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(first,cur,2));
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}
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}
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if (!cur->is_free(0))
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{
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n1 = amap.create_dart();
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amap.link_beta_0(cur, n1);
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}
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else n1 = NULL;
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if (!cur->is_free(1))
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{
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n2 = amap.create_dart();
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amap.link_beta_1(cur, n2);
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}
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else n2 = NULL;
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if (n1 != NULL && n2 != NULL)
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amap.link_beta_0(n1, n2);
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if (n1 != NULL && prev != NULL)
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amap.template link_beta_for_involution<2>(prev, n1);
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for (unsigned int dim=3; dim<=Map::dimension; ++dim)
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{
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if ( !adart->is_free(dim) )
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{
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if ( !amap.is_marked(cur->beta(dim), treated) )
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{
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if (n1!=NULL)
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{
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nn1=amap.create_dart();
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amap.link_beta_1(cur->beta(dim), nn1);
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amap.basic_link_beta_for_involution(n1, nn1, dim);
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}
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else nn1=NULL;
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if (n2!=NULL)
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{
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nn2=amap.create_dart();
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amap.link_beta_0(cur->beta(dim), nn2);
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amap.basic_link_beta_for_involution(n2, nn2, dim);
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}
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else nn2=NULL;
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if (nn1 != NULL && nn2 != NULL)
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amap.basic_link_beta_1(nn1, nn2);
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if (nn1 != NULL && prev != NULL)
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amap.basic_link_beta_for_involution(nn1, prev->beta(dim), 2);
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amap.mark(cur->beta(dim), treated);
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tounmark.push(cur->beta(dim));
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}
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else
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{
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if ( n1!=NULL )
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amap.basic_link_beta_for_involution(n1, cur->beta(dim)->beta(1), dim);
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if ( n2!=NULL )
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amap.basic_link_beta_for_involution(n2, cur->beta(dim)->beta(0), dim);
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}
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}
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}
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prev = n2;
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}
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if (n2 != NULL)
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{
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amap.template link_beta_for_involution<2>(first->beta(0), n2);
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for (unsigned int dim=3; dim<=Map::dimension; ++dim)
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{
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if ( !adart->is_free(dim) )
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{
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amap.basic_link_beta_for_involution(first->beta(0)->beta(dim),
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n2->beta(dim), 2);
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}
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}
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}
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// Now we unmark all marked darts
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while ( !tounmark.empty() )
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{
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amap.unmark(tounmark.top(), treated);
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tounmark.pop();
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}
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CGAL_assertion(amap.is_whole_map_unmarked(treated));
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amap.free_mark(treated);
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while ( !tosplit.empty() )
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{
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internal::Couple_dart_and_dim<typename Map::Dart_handle> c=tosplit.top();
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tosplit.pop();
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internal::Call_split_functor<Map, 2>::run(c.d1, c.d2);
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}
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CGAL_expensive_postcondition( amap.is_valid() );
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return n1;
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}
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/** Test if an i-cell can be removed.
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* An i-cell can be removed if i==Map::dimension or i==Map::dimension-1,
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* or if there are at most two (i+1)-cell incident to it.
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* @param adart a dart of the i-cell.
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* @return true iff the i-cell can be removed.
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*/
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template < class Map, unsigned int i >
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bool is_removable(const Map& amap, typename Map::Dart_const_handle adart)
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{
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CGAL_assertion(adart != NULL);
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CGAL_static_assertion(0<=i && i<=Map::dimension);
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if ( i==Map::dimension ) return true;
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if ( i==Map::dimension-1 ) return true;
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// TODO ? Optimisation for dim-2, and to not test all
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// the darts of the cell ?
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bool res = true;
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for (CMap_dart_const_iterator_of_cell<Map,i> it(amap, adart);
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res && it.cont(); ++it)
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{
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if (it->template beta<i+2>()->template beta<i+1>()!=
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it->template beta_inv<i+1>()->template beta<i+2>() )
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res = false;
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}
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return res;
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}
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/** Remove an i-cell, 0<i<dimension, and merge eventually both incident
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* (i+1)-cells.
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* @param amap the used combinatorial map.
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* @param adart a dart of the i-cell to remove.
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* @return the number of deleted darts.
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*/
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template<class Map, unsigned int i, unsigned int nmi>
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struct Remove_cell_functor
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{
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static size_t run(Map& amap, typename Map::Dart_handle adart)
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{
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CGAL_static_assertion ( 1<=i && i<Map::dimension );
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CGAL_assertion( (is_removable<Map,i>(amap, adart)) );
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size_t res = 0;
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typename Map::Dart_handle d1, d2;
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typename Map::Dart_handle dg1=NULL, dg2=NULL;
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int mark = amap.get_new_mark();
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int mark_modified_darts = amap.get_new_mark();
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std::deque<typename Map::Dart_handle> to_erase;
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const int iinv = CGAL_BETAINV(i);
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/*int mark_for_incident_cells[Map::Helper::nb_attribs];
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std::deque<std::deque<typename Map::Dart_handle> >
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incident_cells[Map::Helper::nb_attribs];
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// Marks used to mark all the incident cells.
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for (int j=0; j<Map::Helper::nb_attribs; ++j)
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{
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mark_for_incident_cells [j] = amap.get_new_mark();
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CGAL_assertion( mark_for_incident_cells[j]!=-1 );
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}*/
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// First we store and mark all the darts of the i-cell to remove.
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for ( CMap_dart_iterator_basic_of_cell<Map,i> it(amap,adart,mark);
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it.cont(); ++it )
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{
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to_erase.push_back(it);
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if ( !it->template is_free<i+1>() && dg1==NULL )
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{ dg1=it; dg2=it->template beta<i+1>(); }
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amap.mark(it, mark);
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++res;
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}
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// Second we store all the incident cells that can be split by
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// the operation.
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typename std::deque<typename Map::Dart_handle>::iterator it =
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to_erase.begin();
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/*for (; it != to_erase.end(); ++it)
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{
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d1 = (*it)->beta(iinv);
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while ( d1!=Map::null_dart_handle && amap.is_marked(d1, mark) )
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{
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d1 = d1->beta(i+1)->beta(iinv);
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if (d1 == (*it)->beta(iinv)) d1 = Map::null_dart_handle;
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}
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d2 = (*it)->beta(i+1)->beta(i);
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while ( d2!=Map::null_dart_handle && amap.is_marked(d2, mark) )
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{
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d2 = d2->beta(i+1)->beta(i);
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if ( d2==(*it)->beta(i+1)->beta(i) ) d2=Map::null_dart_handle;
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}
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if (d1 != Map::null_dart_handle)
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{
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if (d2 != Map::null_dart_handle)
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{
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if ( dg1==NULL ) { dg1 = d1; dg2=d2; }
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Map::Helper::template Foreach_enabled_attributes
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<internal::Store_incident_cells<Map,i> >::
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run(&amap, d1, mark, &mark_for_incident_cells[0],
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&incident_cells[0]);
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Map::Helper::template Foreach_enabled_attributes
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<internal::Store_incident_cells<Map,i> >::
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run(&amap, d2, mark, &mark_for_incident_cells[0],
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&incident_cells[0]);
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}
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else
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{
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if ( !d1->is_free(i) )
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{
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Map::Helper::template Foreach_enabled_attributes
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<internal::Store_incident_cells<Map,i> >::
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run(&amap, d1->beta(i), mark, &mark_for_incident_cells[0],
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&incident_cells[0]);
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}
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}
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}
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else if (d2 != Map::null_dart_handle)
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{
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if ( !d2->is_free(iinv) )
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{
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Map::Helper::template Foreach_enabled_attributes
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<internal::Store_incident_cells<Map,i> >::
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run(&amap, d2, mark, &mark_for_incident_cells[0],
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&incident_cells[0]);
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}
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}
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if ((*it)->is_free(i+1) && !(*it)->is_free(i))
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{
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d1 = (*it)->beta(i);
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if ( !d1->is_free(iinv) )
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{
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Map::Helper::template Foreach_enabled_attributes
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<internal::Store_incident_cells<Map,i> >::
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run(&amap, d1, mark, &mark_for_incident_cells[0],
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&incident_cells[0]);
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}
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}
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// Required to process cells non consider in the cases above.
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amap.update_dart_of_all_attributes(*it, mark);
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}*/
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for (; it != to_erase.end(); ++it)
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amap.update_dart_of_all_attributes(*it, mark);
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// We group the two (i+1)-cells incident if they exist.
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if ( dg1!=NULL )
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amap.template group_attribute<i+1>(dg1, dg2);
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std::deque<typename Map::Dart_handle> modified_darts;
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// std::deque<typename Map::Dart_handle> modified_darts2;
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// For each dart of the i-cell, we modify i-links of neighbors.
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for ( it=to_erase.begin(); it != to_erase.end(); ++it)
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{
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d1 = (*it)->beta(iinv);
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while ( d1!=Map::null_dart_handle && amap.is_marked(d1, mark) )
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{
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d1 = d1->beta(i+1)->beta(iinv);
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if (d1 == (*it)->beta(iinv)) d1 = Map::null_dart_handle;
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}
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if ( !amap.is_marked(d1, mark_modified_darts) )
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{
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d2 = (*it)->beta(i+1)->beta(i);
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while ( d2!=Map::null_dart_handle && amap.is_marked(d2, mark) )
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{
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d2 = d2->beta(i+1)->beta(i);
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if ( d2==(*it)->beta(i+1)->beta(i) ) d2=Map::null_dart_handle;
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}
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if ( !amap.is_marked(d2, mark_modified_darts) )
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{
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if (d1 != Map::null_dart_handle)
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{
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if (d2 != Map::null_dart_handle && d1!=d2 )
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{
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//d1->basic_link_beta(d2, i);
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amap.template basic_link_beta<i>(d1, d2);
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amap.mark(d1, mark_modified_darts);
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amap.mark(d2, mark_modified_darts);
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modified_darts.push_back(d1);
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modified_darts.push_back(d2);
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/*if ( i==1 )
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{
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d2->basic_link_beta(d1, 0);
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modified_darts.push_back(d2);
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}*/
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// modified_darts2.push_back(d1);
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}
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else
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{
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if ( !d1->is_free(i) )
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{
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d1->unlink_beta(i);
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CGAL_assertion( !amap.is_marked(d1, mark_modified_darts) );
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amap.mark(d1, mark_modified_darts);
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modified_darts.push_back(d1);
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}
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}
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}
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else if (d2 != Map::null_dart_handle)
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{
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if ( !d2->is_free(iinv) )
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{
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d2->unlink_beta(iinv);
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CGAL_assertion( !amap.is_marked(d2, mark_modified_darts) );
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amap.mark(d2, mark_modified_darts);
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modified_darts.push_back(d2);
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}
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}
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}
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}
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if ( (*it)->is_free(i+1) && !(*it)->is_free(i) )
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{
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d1 = (*it)->beta(i);
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if ( !d1->is_free(iinv) )
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{
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d1->unlink_beta(iinv);
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CGAL_assertion( !amap.is_marked(d1, mark_modified_darts) );
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amap.mark(d1, mark_modified_darts);
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modified_darts.push_back(d1);
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}
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}
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}
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// We test the split of all the incident cells for all the non
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// void attributes.
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Map::Helper::template Foreach_enabled_attributes
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<internal::Test2_split_with_deque<Map,i> >::
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// <internal::Test_split_with_deque<Map,i> >::
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run(&amap, &modified_darts, mark_modified_darts);
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//&modified_darts2);
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//&mark_for_incident_cells[0], &incident_cells[0]);
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// We remove all the darts of the i-cell.
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for ( it=to_erase.begin(); it!=to_erase.end(); ++it )
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{ amap.erase_dart(*it); }
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CGAL_assertion( amap.is_whole_map_unmarked(mark) );
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amap.free_mark(mark);
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if ( !amap.is_whole_map_unmarked(mark_modified_darts) )
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{
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for ( typename std::deque<typename Map::Dart_handle>::
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iterator it=modified_darts.begin();
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it!=modified_darts.end(); ++it )
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amap.unmark(*it, mark_modified_darts);
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/*for ( typename std::deque<typename Map::Dart_handle>::
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iterator it=modified_darts2.begin();
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it!=modified_darts2.end(); ++it )
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amap.unmark(*it, mark_modified_darts);*/
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}
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CGAL_assertion ( amap.is_whole_map_unmarked(mark_modified_darts) );
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amap.free_mark(mark_modified_darts);
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// We free the marks.
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/*for (int j=0; j<Map::Helper::nb_attribs; ++j)
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{
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CGAL_assertion( amap.is_whole_map_marked
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(mark_for_incident_cells[j]) );
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amap.free_mark( mark_for_incident_cells[j] );
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}*/
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CGAL_expensive_postcondition( amap.is_valid() );
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assert( amap.is_valid() );
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return res;
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}
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};
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/** Remove a d-cell, in a d-map (special case).
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* @param amap the used combinatorial map.
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* @param adart a dart of the volume to remove.
|
|
* @return the number of deleted darts.
|
|
*/
|
|
template<class Map,unsigned int i>
|
|
struct Remove_cell_functor<Map,i,0>
|
|
{
|
|
static size_t run(Map& amap, typename Map::Dart_handle adart)
|
|
{
|
|
CGAL_assertion( adart!=NULL );
|
|
|
|
int mark = amap.get_new_mark();
|
|
std::deque<typename Map::Dart_handle> to_erase;
|
|
size_t res = 0;
|
|
|
|
std::deque<typename Map::Dart_handle> modified_darts;
|
|
|
|
/* int mark_for_incident_cells[Map::Helper::nb_attribs];
|
|
std::deque<std::deque<typename Map::Dart_handle> >
|
|
incident_cells[Map::Helper::nb_attribs];
|
|
|
|
// Marks used to mark all the incident cells.
|
|
for (int j=0; j<Map::Helper::nb_attribs; ++j)
|
|
{
|
|
mark_for_incident_cells[j] = amap.get_new_mark();
|
|
CGAL_assertion( mark_for_incident_cells[j]!=-1 );
|
|
}
|
|
*/
|
|
|
|
// 1) We mark all the darts of the d-cell.
|
|
for (CMap_dart_iterator_basic_of_cell<Map,Map::dimension>
|
|
it(amap,adart,mark); it.cont(); ++it)
|
|
{
|
|
to_erase.push_back(it);
|
|
amap.mark(it,mark);
|
|
++res;
|
|
}
|
|
|
|
typename std::deque<typename Map::Dart_handle>::iterator
|
|
it = to_erase.begin();
|
|
|
|
// 2) We store all the incident cells that can be split by the operation,
|
|
// and we update the dart of the cells incident to the remove volume.
|
|
/* for ( ; it != to_erase.end(); ++it )
|
|
{
|
|
if ( !(*it)->is_free(Map::dimension) )
|
|
{
|
|
Map::Helper::template Foreach_enabled_attributes
|
|
<internal::Store_incident_cells<Map,i> >::
|
|
run(&amap, *it, mark, &mark_for_incident_cells[0],
|
|
&incident_cells[0]);
|
|
}
|
|
amap.update_dart_of_all_attributes(*it, mark);
|
|
}*/
|
|
|
|
|
|
// 3) We unlink all the darts of the volume for beta-d.
|
|
for ( it = to_erase.begin(); it != to_erase.end(); ++it )
|
|
{
|
|
if ( !(*it)->is_free(Map::dimension) &&
|
|
!amap.is_marked((*it)->beta(Map::dimension), mark) )
|
|
{
|
|
modified_darts.push_back((*it)->beta(Map::dimension));
|
|
//(*it)->beta(Map::dimension)->unlink_beta(Map::dimension);
|
|
amap.template unlink_beta_for_involution(*it, Map::dimension);
|
|
}
|
|
}
|
|
|
|
// 4) We test the split of all the incident cells for all the non
|
|
// void attributes.
|
|
Map::Helper::template Foreach_enabled_attributes
|
|
<internal::Test2_split_with_deque<Map,i> >::
|
|
run(&amap, &modified_darts, -1); //, modified_darts2);
|
|
//&mark_for_incident_cells[0],
|
|
//&incident_cells[0]);
|
|
|
|
// 5) We remove all the darts of the d-cell.
|
|
for ( it = to_erase.begin(); it != to_erase.end(); ++it )
|
|
{ amap.erase_dart(*it); }
|
|
|
|
CGAL_assertion( amap.is_whole_map_unmarked(mark) );
|
|
amap.free_mark(mark);
|
|
|
|
// We free the marks.
|
|
/* for (int j=0; j<Map::Helper::nb_attribs; ++j)
|
|
{
|
|
CGAL_assertion( amap.is_whole_map_marked
|
|
(mark_for_incident_cells [j]) );
|
|
amap.free_mark( mark_for_incident_cells [j] );
|
|
}*/
|
|
|
|
CGAL_expensive_postcondition( amap.is_valid() );
|
|
assert( amap.is_valid() ); // TO REMOVE
|
|
|
|
return res;
|
|
}
|
|
};
|
|
|
|
/** Remove a vertex, and merge eventually both incident edges.
|
|
* @param amap the used combinatorial map.
|
|
* @param adart a dart of the vertex to remove.
|
|
* @return the number of deleted darts.
|
|
*/
|
|
template<class Map,unsigned int nmi>
|
|
struct Remove_cell_functor<Map,0,nmi>
|
|
{
|
|
static size_t run(Map& amap, typename Map::Dart_handle adart)
|
|
{
|
|
CGAL_assertion( (is_removable<Map,0>(amap,adart)) );
|
|
|
|
size_t res = 0;
|
|
|
|
typename Map::Dart_handle d1, d2;
|
|
typename Map::Dart_handle dg1=NULL, dg2=NULL;
|
|
|
|
int mark = amap.get_new_mark();
|
|
// int mark_modified_darts = amap.get_new_mark();
|
|
|
|
std::deque<typename Map::Dart_handle> to_erase;
|
|
|
|
std::deque<typename Map::Dart_handle> modified_darts;
|
|
|
|
/* int mark_for_incident_cells[Map::Helper::nb_attribs];
|
|
std::deque<std::deque<typename Map::Dart_handle> >
|
|
incident_cells[Map::Helper::nb_attribs];
|
|
|
|
// Marks used to mark all the incident cells.
|
|
for (int j=0; j<Map::Helper::nb_attribs; ++j)
|
|
{
|
|
mark_for_incident_cells [j] = amap.get_new_mark();
|
|
CGAL_assertion( mark_for_incident_cells [j]!=-1 );
|
|
}
|
|
*/
|
|
|
|
// First we store and mark all the darts of the 0-cell to remove.
|
|
for ( CMap_dart_iterator_basic_of_cell<Map,0> it(amap,adart,mark);
|
|
it.cont(); ++it )
|
|
{
|
|
to_erase.push_back(it);
|
|
if ( !it->is_free(0) && dg1==NULL )
|
|
{ dg1=it; dg2=it->beta(0); }
|
|
amap.mark(it, mark);
|
|
++res;
|
|
}
|
|
|
|
// Second we store all the incident cells that can be split by
|
|
// the operation.
|
|
typename std::deque<typename Map::Dart_handle>::iterator it =
|
|
to_erase.begin();
|
|
/* for (; it != to_erase.end(); ++it)
|
|
{
|
|
if ( !(*it)->is_free(0) )
|
|
{
|
|
if ( !(*it)->is_free(1) && (*it)->beta(0)!=(*it) )
|
|
{
|
|
if ( dg1==NULL ) { dg1=(*it)->beta(0); dg2=(*it)->beta(1); }
|
|
Map::Helper::template Foreach_enabled_attributes
|
|
<internal::Store_incident_cells<Map,0> >::
|
|
run(&amap, *it, mark, &mark_for_incident_cells[0],
|
|
&incident_cells[0]);
|
|
}
|
|
else
|
|
{
|
|
Map::Helper::template Foreach_enabled_attributes
|
|
<internal::Store_incident_cells<Map,0> >::
|
|
run(&amap, *it, mark, &mark_for_incident_cells[0],
|
|
&incident_cells[0]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ( !(*it)->is_free(1) )
|
|
{
|
|
Map::Helper::template Foreach_enabled_attributes
|
|
<internal::Store_incident_cells<Map,0> >::
|
|
run(&amap, (*it)->beta(1), mark, &mark_for_incident_cells[0],
|
|
&incident_cells[0]);
|
|
}
|
|
}
|
|
}
|
|
*/
|
|
|
|
for (; it != to_erase.end(); ++it)
|
|
amap.update_dart_of_all_attributes(*it, mark);
|
|
|
|
// We group the two edges incident if they exist.
|
|
if ( dg1!=NULL )
|
|
amap.template group_attribute<1>(dg1, dg2);
|
|
|
|
// For each dart of the vertex, we modify 0 and 1-links of neighbors.
|
|
for ( it=to_erase.begin(); it != to_erase.end(); ++it)
|
|
{
|
|
if ( !(*it)->is_free(0) )
|
|
{
|
|
if ( !(*it)->is_free(1) && (*it)->beta(0)!=(*it) )
|
|
{
|
|
amap.template basic_link_beta<1>((*it)->beta(0), (*it)->beta(1));
|
|
modified_darts.push_back((*it)->beta(0));
|
|
modified_darts.push_back((*it)->beta(1));
|
|
}
|
|
else
|
|
{
|
|
(*it)->beta(0)->unlink_beta(1);
|
|
modified_darts.push_back((*it)->beta(0));
|
|
}
|
|
|
|
for ( unsigned int j=2; j<=Map::dimension; ++j )
|
|
{
|
|
if ( !(*it)->is_free(j) )
|
|
{
|
|
// TODO push these darts in modified_darts ?
|
|
// not sure this is required
|
|
amap.basic_link_beta((*it)->beta(0), (*it)->beta(j), j);
|
|
//((*it)->beta(0))->basic_link_beta((*it)->beta(j),j);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ( !(*it)->is_free(1) )
|
|
{
|
|
(*it)->beta(1)->unlink_beta(0);
|
|
modified_darts.push_back((*it)->beta(1));
|
|
}
|
|
|
|
for ( unsigned int j=2; j<=Map::dimension; ++j )
|
|
{
|
|
if ( !(*it)->is_free(j) )
|
|
{
|
|
// TODO push these darts in modified_darts ?
|
|
// not sure this is required
|
|
amap.unlink_beta(*it, j);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// We test the split of all the incident cells for all the non
|
|
// void attributes.
|
|
Map::Helper::template Foreach_enabled_attributes
|
|
<internal::Test2_split_with_deque<Map,0> >::
|
|
// <internal::Test_split_with_deque<Map,0> >::
|
|
run(&amap,
|
|
&modified_darts, -1); //mark_modified_darts);
|
|
//&mark_for_incident_cells[0],
|
|
//&incident_cells[0]);
|
|
|
|
// We remove all the darts of the i-cell.
|
|
for ( it=to_erase.begin(); it!=to_erase.end(); ++it )
|
|
{ amap.erase_dart(*it); }
|
|
|
|
CGAL_assertion( amap.is_whole_map_unmarked(mark) );
|
|
amap.free_mark(mark);
|
|
|
|
// We free the marks.
|
|
/* for (int j=0; j<Map::Helper::nb_attribs; ++j)
|
|
{
|
|
CGAL_assertion( amap.is_whole_map_marked
|
|
(mark_for_incident_cells [j]) );
|
|
amap.free_mark( mark_for_incident_cells [j] );
|
|
}
|
|
*/
|
|
|
|
CGAL_expensive_postcondition( amap.is_valid() );
|
|
assert( amap.is_valid() ); // TO REMOVEE
|
|
|
|
return res;
|
|
}
|
|
};
|
|
|
|
/** Remove an i-cell, 0<=i<=dimension.
|
|
* @param amap the used combinatorial map.
|
|
* @param adart a dart of the i-cell to remove.
|
|
* @return the number of deleted darts.
|
|
*/
|
|
template < class Map, unsigned int i >
|
|
size_t remove_cell(Map& amap, typename Map::Dart_handle adart)
|
|
{ return Remove_cell_functor<Map,i,Map::dimension-i>::run(amap,adart); }
|
|
|
|
/** Test if an edge can be inserted onto a 2-cell between two given darts.
|
|
* @param amap the used combinatorial map.
|
|
* @param adart1 a first dart.
|
|
* @param adart2 a second dart.
|
|
* @return true iff an edge can be inserted between adart1 and adart2.
|
|
*/
|
|
template < class Map >
|
|
bool is_insertable_cell_1_in_cell_2(const Map& amap,
|
|
typename Map::Dart_const_handle adart1,
|
|
typename Map::Dart_const_handle adart2)
|
|
{
|
|
CGAL_assertion(adart1 != NULL && adart2 != NULL);
|
|
if ( adart1==adart2 ) return false;
|
|
for ( CMap_dart_const_iterator_of_orbit<Map,1> it(amap,adart1);
|
|
it.cont(); ++it )
|
|
{
|
|
if ( it==adart2 ) return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/** Test if an i-cell can be contracted.
|
|
* An i-cell can be contracted if i==1
|
|
* or if there are at most two (i-1)-cell incident to it.
|
|
* @param adart a dart of the i-cell.
|
|
* @return true iff the i-cell can be contracted.
|
|
*/
|
|
template < class Map, unsigned int i >
|
|
bool is_contractible(const Map& amap, typename Map::Dart_const_handle adart)
|
|
{
|
|
CGAL_assertion(adart != NULL);
|
|
CGAL_static_assertion(0<=i && i<=Map::dimension);
|
|
|
|
if ( i==0 ) return false;
|
|
if ( i==1 ) return true;
|
|
|
|
// TODO ? Optimisation possible to not test all
|
|
// the darts of the cell ?
|
|
bool res = true;
|
|
for (CMap_dart_const_iterator_of_cell<Map,i> it(amap, adart);
|
|
res && it.cont(); ++it)
|
|
{
|
|
if ( it->beta(i-2)->beta(i-1)!=it->beta(i-1)->beta_inv(i-2) )
|
|
res = false;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/** Contract an i-cell, 1<i<=dimension, and merge eventually both incident
|
|
* (i-1)-cells.
|
|
* @param amap the used combinatorial map.
|
|
* @param adart a dart of the i-cell to contract.
|
|
* @return the number of deleted darts.
|
|
*/
|
|
template<class Map, unsigned int i>
|
|
struct Contract_cell_functor
|
|
{
|
|
static size_t run(Map& amap, typename Map::Dart_handle adart)
|
|
{
|
|
CGAL_static_assertion ( 2<=i && i<=Map::dimension );
|
|
CGAL_assertion( (is_contractible<Map,i>(amap, adart)) );
|
|
|
|
size_t res = 0;
|
|
|
|
typename Map::Dart_handle d1, d2;
|
|
typename Map::Dart_handle dg1=NULL, dg2=NULL;
|
|
|
|
int mark = amap.get_new_mark();
|
|
int mark_modified_darts = amap.get_new_mark();
|
|
|
|
std::deque<typename Map::Dart_handle> to_erase;
|
|
|
|
const int imuinv = CGAL_BETAINV(i-1);
|
|
|
|
// First we store and mark all the darts of the i-cell to contract.
|
|
for ( CMap_dart_iterator_basic_of_cell<Map,i> it(amap,adart,mark);
|
|
it.cont(); ++it )
|
|
{
|
|
to_erase.push_back(it);
|
|
if ( !it->is_free(i-1) && dg1==NULL )
|
|
{ dg1=it; dg2=it->beta(i-1); }
|
|
amap.mark(it, mark);
|
|
++res;
|
|
}
|
|
|
|
// We group the two (i+1)-cells incident if they exist.
|
|
if ( dg1!=NULL )
|
|
amap.template group_attribute<i-1>(dg1, dg2);
|
|
|
|
// Second we update the dart of the cell attributes on non marked darts.
|
|
typename std::deque<typename Map::Dart_handle>::iterator it =
|
|
to_erase.begin();
|
|
for (; it != to_erase.end(); ++it)
|
|
amap.update_dart_of_all_attributes(*it, mark);
|
|
|
|
std::deque<typename Map::Dart_handle> modified_darts;
|
|
|
|
// For each dart of the i-cell, we modify i-links of neighbors.
|
|
for ( it=to_erase.begin(); it!=to_erase.end(); ++it )
|
|
{
|
|
d1 = (*it)->beta(i);
|
|
while ( d1!=Map::null_dart_handle && amap.is_marked(d1, mark) )
|
|
{
|
|
d1 = d1->beta(imuinv)->beta(i);
|
|
if (d1 == (*it)->beta(i)) d1 = Map::null_dart_handle;
|
|
}
|
|
|
|
if ( !amap.is_marked(d1, mark_modified_darts) )
|
|
{
|
|
d2 = (*it)->beta(i-1)->beta(i);
|
|
while ( d2!=Map::null_dart_handle && amap.is_marked(d2, mark) )
|
|
{
|
|
d2 = d2->beta(i-1)->beta(i);
|
|
if ( d2==(*it)->beta(i-1)->beta(i) ) d2=Map::null_dart_handle;
|
|
}
|
|
|
|
if ( !amap.is_marked(d2, mark_modified_darts) )
|
|
{
|
|
if (d1 != Map::null_dart_handle)
|
|
{
|
|
if (d2 != Map::null_dart_handle && d1!=d2 )
|
|
{
|
|
amap.template basic_link_beta<i>(d1, d2);
|
|
amap.mark(d1, mark_modified_darts);
|
|
amap.mark(d2, mark_modified_darts);
|
|
modified_darts.push_back(d1);
|
|
modified_darts.push_back(d2);
|
|
}
|
|
else
|
|
{
|
|
if ( !d1->is_free(i) )
|
|
{
|
|
d1->unlink_beta(i);
|
|
CGAL_assertion( !amap.is_marked(d1, mark_modified_darts) );
|
|
amap.mark(d1, mark_modified_darts);
|
|
modified_darts.push_back(d1);
|
|
}
|
|
}
|
|
}
|
|
else if (d2 != Map::null_dart_handle)
|
|
{
|
|
if ( !d2->is_free(i) )
|
|
{
|
|
d2->unlink_beta(i);
|
|
CGAL_assertion( !amap.is_marked(d2, mark_modified_darts) );
|
|
amap.mark(d2, mark_modified_darts);
|
|
modified_darts.push_back(d2);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if ((*it)->is_free(i-1) && !(*it)->is_free(i))
|
|
{
|
|
d1 = (*it)->beta(i);
|
|
if ( !d1->is_free(i) )
|
|
{
|
|
d1->unlink_beta(i);
|
|
CGAL_assertion( !amap.is_marked(d1, mark_modified_darts) );
|
|
amap.mark(d1, mark_modified_darts);
|
|
modified_darts.push_back(d1);
|
|
}
|
|
}
|
|
}
|
|
|
|
// We test the split of all the incident cells for all the non
|
|
// void attributes.
|
|
Map::Helper::template Foreach_enabled_attributes
|
|
<internal::Test2_split_with_deque<Map,i> >::
|
|
run(&amap, &modified_darts, mark_modified_darts);
|
|
|
|
// We remove all the darts of the i-cell.
|
|
for ( it=to_erase.begin(); it!=to_erase.end(); ++it )
|
|
{ amap.erase_dart(*it); }
|
|
|
|
CGAL_assertion( amap.is_whole_map_unmarked(mark) );
|
|
amap.free_mark(mark);
|
|
|
|
if ( !amap.is_whole_map_unmarked(mark_modified_darts) )
|
|
{
|
|
for ( typename std::deque<typename Map::Dart_handle>::
|
|
iterator it=modified_darts.begin();
|
|
it!=modified_darts.end(); ++it )
|
|
amap.unmark(*it, mark_modified_darts);
|
|
}
|
|
|
|
// amap.display_darts(std::cout);
|
|
|
|
CGAL_assertion ( amap.is_whole_map_unmarked(mark_modified_darts) );
|
|
amap.free_mark(mark_modified_darts);
|
|
|
|
CGAL_expensive_postcondition( amap.is_valid() );
|
|
assert( amap.is_valid() );
|
|
|
|
return res;
|
|
}
|
|
};
|
|
|
|
/** Contract an edge, and merge eventually both incident vertices.
|
|
* @param amap the used combinatorial map.
|
|
* @param adart a dart of the edge to contract.
|
|
* @return the number of deleted darts.
|
|
*/
|
|
template<class Map>
|
|
struct Contract_cell_functor<Map,1>
|
|
{
|
|
static size_t run(Map& amap, typename Map::Dart_handle adart)
|
|
{
|
|
CGAL_assertion( (is_contractible<Map,1>(amap,adart)) );
|
|
|
|
size_t res = 0;
|
|
|
|
typename Map::Dart_handle d1, d2;
|
|
typename Map::Dart_handle dg1=NULL, dg2=NULL;
|
|
|
|
int mark = amap.get_new_mark();
|
|
// int mark_modified_darts = amap.get_new_mark();
|
|
|
|
std::deque<typename Map::Dart_handle> to_erase;
|
|
|
|
std::deque<typename Map::Dart_handle> modified_darts;
|
|
|
|
// First we store and mark all the darts of the 1-cell to contract.
|
|
for ( CMap_dart_iterator_basic_of_cell<Map,1> it(amap,adart,mark);
|
|
it.cont(); ++it )
|
|
{
|
|
to_erase.push_back(it);
|
|
if ( dg1==NULL && it->other_extremity()!=NULL )
|
|
{ dg1=it; dg2=it->other_extremity(); }
|
|
amap.mark(it, mark);
|
|
++res;
|
|
}
|
|
|
|
typename std::deque<typename Map::Dart_handle>::iterator it =
|
|
to_erase.begin();
|
|
|
|
for (; it != to_erase.end(); ++it)
|
|
amap.update_dart_of_all_attributes(*it, mark);
|
|
|
|
// We group the two vertices incident if they exist.
|
|
if ( dg1!=NULL )
|
|
amap.template group_attribute<0>(dg1, dg2);
|
|
|
|
// 4) For each dart of the cell, we modify link of neighbors.
|
|
for ( it=to_erase.begin(); it!=to_erase.end(); ++it )
|
|
{
|
|
if ( !(*it)->is_free(0) )
|
|
{
|
|
if ( !(*it)->is_free(1) )
|
|
{
|
|
if ( (*it)->beta(1)!=*it )
|
|
{
|
|
/* modified_darts.push_back((*it)->beta(0));
|
|
if ( (*it)->beta(0)!=(*it)->beta(1) )*/
|
|
modified_darts.push_back((*it)->beta(1));
|
|
amap.template basic_link_beta<1>((*it)->beta(0), (*it)->beta(1));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// TODO todegroup.push(Dart_pair((*it)->beta(0), *it));
|
|
modified_darts.push_back((*it)->beta(0));
|
|
(*it)->beta(0)->unlink_beta(1);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ( !(*it)->is_free(1) )
|
|
{
|
|
// TODO todegroup.push(Dart_pair((*it)->beta(1), *it));
|
|
modified_darts.push_back((*it)->beta(1));
|
|
(*it)->beta(1)->unlink_beta(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
// We test the split of all the incident cells for all the non
|
|
// void attributes.
|
|
Map::Helper::template Foreach_enabled_attributes
|
|
<internal::Test2_split_with_deque<Map,1> >::
|
|
// <internal::Test_split_with_deque<Map,0> >::
|
|
run(&amap,
|
|
&modified_darts, -1); //mark_modified_darts);
|
|
//&mark_for_incident_cells[0],
|
|
//&incident_cells[0]);
|
|
|
|
// 6) We remove all the darts of the cell.
|
|
for (it = to_erase.begin(); it != to_erase.end(); ++it)
|
|
{ amap.erase_dart(*it); }
|
|
|
|
CGAL_assertion( amap.is_whole_map_unmarked(mark) );
|
|
amap.free_mark(mark);
|
|
|
|
CGAL_expensive_postcondition( amap.is_valid() );
|
|
assert( amap.is_valid() ); // TO REMOVE
|
|
|
|
return res;
|
|
}
|
|
};
|
|
|
|
/** Contract an i-cell, 1<=i<=dimension.
|
|
* @param amap the used combinatorial map.
|
|
* @param adart a dart of the i-cell to remove.
|
|
* @return the number of deleted darts.
|
|
*/
|
|
template < class Map, unsigned int i >
|
|
size_t contract_cell(Map& amap, typename Map::Dart_handle adart)
|
|
{ return Contract_cell_functor<Map,i>::run(amap,adart); }
|
|
|
|
/** Test if a 2-cell can be inserted onto a given 3-cell along
|
|
* a path of edges.
|
|
* @param amap the used combinatorial map.
|
|
* @param afirst iterator on the begining of the path.
|
|
* @param alast iterator on the end of the path.
|
|
* @return true iff a 2-cell can be inserted along the path.
|
|
*/
|
|
template <class Map, class InputIterator>
|
|
bool is_insertable_cell_2_in_cell_3(const Map& amap,
|
|
InputIterator afirst,
|
|
InputIterator alast)
|
|
{
|
|
CGAL_static_assertion( Map::dimension>= 3 );
|
|
|
|
// The path must have at least one dart.
|
|
if (afirst==alast) return false;
|
|
typename Map::Dart_const_handle prec = NULL;
|
|
typename Map::Dart_const_handle od = NULL;
|
|
|
|
for (InputIterator it(afirst); it!=alast; ++it)
|
|
{
|
|
// The path must contain only non empty darts.
|
|
if (*it == NULL || *it==Map::null_dart_handle) return false;
|
|
|
|
// Two consecutive darts of the path must belong to two edges
|
|
// incident to the same vertex of the same volume.
|
|
if (prec != NULL)
|
|
{
|
|
od = prec->other_extremity();
|
|
if ( od==Map::null_dart_handle ) return false;
|
|
|
|
// of and *it must belong to the same vertex of the same volume
|
|
if ( !belong_to_same_cell<Map, 0, 2>(amap, od, *it) )
|
|
return false;
|
|
}
|
|
prec = *it;
|
|
}
|
|
|
|
// The path must be closed.
|
|
od = prec->other_extremity();
|
|
if ( od==Map::null_dart_handle ) return false;
|
|
|
|
if (!belong_to_same_cell<Map, 0, 2>(amap, od, *afirst))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/** Insert a vertex in a given edge.
|
|
* @param amap the used combinatorial map.
|
|
* @param adart a dart of the edge (!=NULL && !=null_dart_handle).
|
|
* @return a dart of the new vertex.
|
|
*/
|
|
template<class Map>
|
|
typename Map::Dart_handle
|
|
insert_cell_0_in_cell_1(Map& amap, typename Map::Dart_handle adart)
|
|
{
|
|
CGAL_assertion(adart != NULL && adart!=Map::null_dart_handle);
|
|
|
|
typename Map::Dart_handle d1, d2;
|
|
int mark = amap.get_new_mark();
|
|
|
|
std::vector<typename Map::Dart_handle> vect;
|
|
{
|
|
for (typename Map::template Dart_of_cell_range<1>::iterator it=
|
|
amap.template darts_of_cell<1>(adart).begin();
|
|
it != amap.template darts_of_cell<1>(adart).end(); ++it)
|
|
vect.push_back(it);
|
|
}
|
|
|
|
// 3) For each dart of the cell, we modify link of neighbors.
|
|
typename std::vector<typename Map::Dart_handle>::iterator it = vect.begin();
|
|
for (; it != vect.end(); ++it)
|
|
{
|
|
d1 = amap.create_dart();
|
|
|
|
if (!(*it)->is_free(1))
|
|
{ amap.template basic_link_beta<1>(d1, (*it)->beta(1)); }
|
|
|
|
for ( unsigned int dim = 2; dim<=Map::dimension; ++dim )
|
|
{
|
|
if (!(*it)->is_free(dim) && amap.is_marked((*it)->beta(dim), mark))
|
|
{
|
|
amap.basic_link_beta((*it)->beta(dim), d1, dim);
|
|
amap.basic_link_beta(*it, (*it)->beta(dim)->beta(1), dim);
|
|
}
|
|
}
|
|
|
|
amap.template basic_link_beta<1>(*it, d1);
|
|
// TODO remove this group, and use link_beta instead ?
|
|
//amap.group_all_dart_attributes_except(*it, d1, 1);
|
|
|
|
amap.mark(*it, mark);
|
|
}
|
|
|
|
for (it = vect.begin(); it != vect.end(); ++it)
|
|
{ amap.unmark(*it, mark); }
|
|
|
|
amap.free_mark(mark);
|
|
|
|
amap.template degroup_attribute<1>(adart, adart->beta(1));
|
|
|
|
// CGAL_expensive_postcondition( amap.is_valid() );
|
|
|
|
return adart->beta(1);
|
|
}
|
|
|
|
/** Insert a dangling edge in a 2-cell between given by a dart.
|
|
* @param amap the used combinatorial map.
|
|
* @param adart1 a first dart of the facet (!=NULL && !=null_dart_handle).
|
|
* @return a dart of the new edge, not incident to the vertex of adart1.
|
|
*/
|
|
template<class Map>
|
|
typename Map::Dart_handle
|
|
insert_dangling_cell_1_in_cell_2(Map& amap, typename Map::Dart_handle adart1)
|
|
{
|
|
CGAL_assertion(adart1!=NULL && adart1!=Map::null_dart_handle);
|
|
|
|
int mark1 = amap.get_new_mark();
|
|
std::vector<typename Map::Dart_handle> to_unmark;
|
|
{
|
|
for ( CMap_dart_iterator_basic_of_cell<Map,0> it(amap,adart1,mark1);
|
|
it.cont(); ++it )
|
|
{
|
|
to_unmark.push_back(it);
|
|
amap.mark(it,mark1);
|
|
}
|
|
}
|
|
|
|
typename Map::Dart_handle d1 = NULL;
|
|
typename Map::Dart_handle d2 = NULL;
|
|
unsigned int s1 = 0;
|
|
|
|
int treated = amap.get_new_mark();
|
|
|
|
CGAL::CMap_dart_iterator_of_involution<Map,1> it1(amap,adart1);
|
|
|
|
for ( ; it1.cont(); ++it1)
|
|
{
|
|
d1 = amap.create_dart();
|
|
d2 = amap.create_dart();
|
|
|
|
if ( amap.is_marked(it1, mark1) ) s1 = 0;
|
|
else s1 = 1;
|
|
|
|
if ( !it1->is_free(s1) )
|
|
{
|
|
if ( s1==0 ) amap.template link_beta<1>(it1->beta(0), d2);
|
|
else amap.template link_beta<0>(it1->beta(1), d2);
|
|
}
|
|
|
|
if (s1==0)
|
|
{
|
|
amap.template link_beta<0>(it1, d1);
|
|
amap.template basic_link_beta<0>(d1,d2);
|
|
}
|
|
else
|
|
{
|
|
amap.template link_beta<1>(it1, d1);
|
|
amap.template basic_link_beta<1>(d1,d2);
|
|
}
|
|
|
|
amap.template link_beta_for_involution<2>(d1, d2);
|
|
|
|
for ( unsigned int dim=3; dim<=Map::dimension; ++dim)
|
|
{
|
|
if ( !it1->is_free(dim) &&
|
|
amap.is_marked(it1->beta(dim), treated) )
|
|
{
|
|
amap.basic_link_beta_for_involution(it1->beta(dim)->beta_inv(s1), d1,
|
|
dim);
|
|
amap.basic_link_beta_for_involution
|
|
(it1->beta(dim)->beta_inv(s1)->beta(2), d2, dim);
|
|
}
|
|
}
|
|
|
|
amap.mark(it1,treated);
|
|
}
|
|
|
|
// amap.template degroup_attribute<1>(adart1, adart1->beta(0));
|
|
// amap.template degroup_attribute<2>(d1, d2);
|
|
|
|
for ( it1.rewind(); it1.cont(); ++it1 )
|
|
{
|
|
amap.unmark(it1,treated);
|
|
}
|
|
CGAL_assertion( amap.is_whole_map_unmarked(treated) );
|
|
amap.free_mark(treated);
|
|
|
|
typename std::vector<typename Map::Dart_handle>::iterator it =
|
|
to_unmark.begin();
|
|
for (; it != to_unmark.end(); ++it)
|
|
{ amap.unmark(*it, mark1); }
|
|
CGAL_assertion( amap.is_whole_map_unmarked(mark1) );
|
|
amap.free_mark(mark1);
|
|
|
|
// CGAL_expensive_postcondition( amap.is_valid() );
|
|
|
|
return adart1->beta(0);
|
|
}
|
|
|
|
/** Insert an edge in a 2-cell between two given darts.
|
|
* @param amap the used combinatorial map.
|
|
* @param adart1 a first dart of the facet (!=NULL && !=null_dart_handle).
|
|
* @param adart2 a second dart of the facet. If NULL insert a dangling edge.
|
|
* @return a dart of the new edge, and not incident to the
|
|
* same vertex than adart1.
|
|
*/
|
|
template<class CMap>
|
|
typename CMap::Dart_handle
|
|
insert_cell_1_in_cell_2(CMap& amap,
|
|
typename CMap::Dart_handle adart1,
|
|
typename CMap::Dart_handle adart2)
|
|
{
|
|
if ( adart2==NULL ) return insert_dangling_cell_1_in_cell_2(amap,adart1);
|
|
|
|
CGAL_assertion(is_insertable_cell_1_in_cell_2<CMap>(amap, adart1, adart2));
|
|
|
|
int m1 = amap.get_new_mark();
|
|
CMap_dart_iterator_basic_of_involution<CMap,1>
|
|
it1 = CMap_dart_iterator_basic_of_involution<CMap,1>(amap, adart1, m1);
|
|
int m2 = amap.get_new_mark();
|
|
CMap_dart_iterator_basic_of_involution<CMap,1>
|
|
it2 = CMap_dart_iterator_basic_of_involution<CMap,1>(amap, adart2, m2);
|
|
|
|
int mark1 = amap.get_new_mark();
|
|
std::vector<typename CMap::Dart_handle> to_unmark;
|
|
{
|
|
for ( CMap_dart_iterator_basic_of_cell<CMap,0> it(amap,adart1,mark1);
|
|
it.cont(); ++it )
|
|
{
|
|
to_unmark.push_back(it);
|
|
amap.mark(it,mark1);
|
|
}
|
|
}
|
|
|
|
typename CMap::Dart_handle d1 = NULL;
|
|
typename CMap::Dart_handle d2 = NULL;
|
|
unsigned int s1 = 0;
|
|
|
|
int treated = amap.get_new_mark();
|
|
|
|
for ( ; it1.cont(); ++it1, ++it2)
|
|
{
|
|
CGAL_assertion (it2.cont() );
|
|
d1 = amap.create_dart();
|
|
d2 = amap.create_dart();
|
|
|
|
if ( amap.is_marked(it1, mark1) ) s1 = 0;
|
|
else s1 = 1;
|
|
|
|
if ( !it1->is_free(s1) )
|
|
{
|
|
if ( s1==0 ) amap.basic_link_beta_1(it1->beta(0), d2);
|
|
else amap.link_beta_0(it1->beta(1), d2);
|
|
}
|
|
|
|
if ( !it2->is_free(s1) )
|
|
{
|
|
if ( s1==0 ) amap.basic_link_beta_1(it2->beta(0), d1);
|
|
else amap.link_beta_0(it2->beta(1), d1);
|
|
}
|
|
|
|
if ( s1==0 )
|
|
{
|
|
amap.link_beta_0(it1, d1);
|
|
amap.link_beta_0(it2, d2);
|
|
}
|
|
else
|
|
{
|
|
amap.basic_link_beta_1(it1, d1);
|
|
amap.basic_link_beta_1(it2, d2);
|
|
}
|
|
amap.link_beta_for_involution(d2, d1, 2);
|
|
|
|
for ( unsigned int dim=3; dim<=CMap::dimension; ++dim)
|
|
{
|
|
if ( !it1->is_free(dim) &&
|
|
amap.is_marked(it1->beta(dim), treated) )
|
|
{
|
|
amap.basic_link_beta_for_involution
|
|
(it1->beta(dim)->beta_inv(s1), d1, dim);
|
|
amap.basic_link_beta_for_involution
|
|
(it1->beta(dim)->beta_inv(s1)->beta(2), d2, dim);
|
|
}
|
|
}
|
|
|
|
amap.mark(it1,treated);
|
|
}
|
|
|
|
// amap.template degroup_attribute<1>(adart1, adart1->beta(0));
|
|
amap.template degroup_attribute<2>(d1, d2);
|
|
|
|
amap.negate_mark(m1);
|
|
amap.negate_mark(m2);
|
|
it1.rewind(); it2.rewind();
|
|
for ( ; it1.cont(); ++it1, ++it2)
|
|
{
|
|
amap.mark(it1,m1);
|
|
amap.unmark(it1,treated);
|
|
amap.mark(it2,m2);
|
|
}
|
|
amap.negate_mark(m1);
|
|
amap.negate_mark(m2);
|
|
CGAL_assertion( amap.is_whole_map_unmarked(m1) );
|
|
CGAL_assertion( amap.is_whole_map_unmarked(m2) );
|
|
CGAL_assertion( amap.is_whole_map_unmarked(treated) );
|
|
amap.free_mark(m1);
|
|
amap.free_mark(m2);
|
|
amap.free_mark(treated);
|
|
|
|
typename std::vector<typename CMap::Dart_handle>::iterator it =
|
|
to_unmark.begin();
|
|
for (; it != to_unmark.end(); ++it)
|
|
{ amap.unmark(*it, mark1); }
|
|
CGAL_assertion( amap.is_whole_map_unmarked(mark1) );
|
|
amap.free_mark(mark1);
|
|
|
|
// CGAL_expensive_postcondition( amap.is_valid() );
|
|
|
|
return adart1->beta(0);
|
|
}
|
|
|
|
/** Insert a 2-cell in a given 3-cell along a path of darts.
|
|
* @param amap the used combinatorial map.
|
|
* @param afirst iterator on the begining of the path.
|
|
* @param alast iterator on the end of the path.
|
|
* @return a dart of the new 2-cell.
|
|
*/
|
|
template<class Map, class InputIterator>
|
|
typename Map::Dart_handle
|
|
insert_cell_2_in_cell_3(Map& amap, InputIterator afirst, InputIterator alast)
|
|
{
|
|
CGAL_assertion(is_insertable_cell_2_in_cell_3(amap,afirst,alast));
|
|
|
|
typename Map::Dart_handle prec = NULL, d = NULL, dd = NULL, first = NULL;
|
|
bool withBeta3 = false;
|
|
|
|
{
|
|
for (InputIterator it(afirst); it!=alast; ++it)
|
|
{
|
|
if (!(*it)->is_free(2)) withBeta3 = true;
|
|
}
|
|
}
|
|
|
|
{
|
|
for (InputIterator it(afirst); it!=alast; ++it)
|
|
{
|
|
d = amap.create_dart();
|
|
if (withBeta3)
|
|
{
|
|
dd = amap.create_dart();
|
|
amap.basic_link_beta_for_involution(d, dd, 3);
|
|
}
|
|
|
|
if (prec != NULL)
|
|
{
|
|
amap.template link_beta<0>(prec, d);
|
|
if (withBeta3) amap.template link_beta<1>(prec->beta(3), dd);
|
|
}
|
|
else first = d;
|
|
|
|
if (!(*it)->is_free(2))
|
|
amap.link_beta_for_involution((*it)->beta(2), dd, 2);
|
|
|
|
amap.link_beta_for_involution(*it, d, 2);
|
|
|
|
prec = d;
|
|
}
|
|
}
|
|
|
|
amap.template link_beta<0>(prec, first);
|
|
if (withBeta3)
|
|
{
|
|
amap.template link_beta<1>(prec->beta(3), first->beta(3));
|
|
}
|
|
|
|
// Make copies of the new facet for dimension >=4
|
|
for ( unsigned int dim=4; dim<=Map::dimension; ++dim )
|
|
{
|
|
if ( !first->is_free(dim) )
|
|
{
|
|
typename Map::Dart_handle first2 = NULL;
|
|
prec = NULL;
|
|
for ( CMap_dart_iterator_of_orbit<Map,1> it(amap, first);
|
|
it.cont(); ++it )
|
|
{
|
|
d = amap.create_dart();
|
|
amap.link_beta_for_involution(it->beta(2),d,dim);
|
|
if ( withBeta3 )
|
|
{
|
|
dd = amap.create_dart();
|
|
amap.link_beta_for_involution(it->beta(2)->beta(3),dd,dim);
|
|
amap.basic_link_beta_for_involution(d, dd, 3);
|
|
}
|
|
if ( prec!=NULL )
|
|
{
|
|
amap.link_beta_0(prec,d);
|
|
if ( withBeta3 )
|
|
{
|
|
amap.link_beta_1(prec->beta(3),dd);
|
|
}
|
|
}
|
|
else first2 = prec;
|
|
|
|
for ( unsigned dim2=2; dim2<=Map::dimension; ++dim2 )
|
|
{
|
|
if ( dim2+1!=dim && dim2!=dim && dim2!=dim+1 )
|
|
{
|
|
if ( !it->is_free(dim2) &&
|
|
it->beta(dim2)->is_free(dim) )
|
|
amap.basic_link_beta_for_involution(it->beta(dim2)->beta(dim),
|
|
d, dim2);
|
|
if ( withBeta3 && !it->beta(3)->is_free(dim2) &&
|
|
it->beta(3)->beta(dim2)->is_free(dim) )
|
|
amap.basic_link_beta_for_involution
|
|
(it->beta(3)->beta(dim2)->beta(dim), dd, dim2);
|
|
}
|
|
}
|
|
prec = d;
|
|
}
|
|
amap.template link_beta<0>( prec, first2 );
|
|
if ( withBeta3 )
|
|
{
|
|
amap.template link_beta<1>( prec->beta(3), first2->beta(3) );
|
|
}
|
|
}
|
|
}
|
|
|
|
// Degroup the attributes
|
|
if ( withBeta3 )
|
|
amap.template degroup_attribute<3>( first, first->beta(3) );
|
|
|
|
// CGAL_expensive_postcondition( amap.is_valid() );
|
|
|
|
return first;
|
|
}
|
|
} // namespace CGAL
|
|
|
|
#endif // CGAL_COMBINATORIAL_MAP_OPERATIONS_H //
|
|
// EOF //
|