ext/OGDF/ogdf/planarity/NonPlanarCore.h

   1 /*
   2  * $Revision: 2523 $
   3  *
   4  * last checkin:
   5  *   $Author: gutwenger $
   6  *   $Date: 2012-07-02 20:59:27 +0200 (Mon, 02 Jul 2012) $
   7  ***************************************************************/
   8
   9 /** \file
  10  * \brief Declaration of class NonPlanarCore which represents the
  11  *        non-planar core reduction for biconnected graphs.
  12  *
  13  * \author Carsten Gutwenger
  14  *
  15  * \par License:
  16  * This file is part of the Open Graph Drawing Framework (OGDF).
  17  *
  18  * \par
  19  * Copyright (C)<br>
  20  * See README.txt in the root directory of the OGDF installation for details.
  21  *
  22  * \par
  23  * This program is free software; you can redistribute it and/or
  24  * modify it under the terms of the GNU General Public License
  25  * Version 2 or 3 as published by the Free Software Foundation;
  26  * see the file LICENSE.txt included in the packaging of this file
  27  * for details.
  28  *
  29  * \par
  30  * This program is distributed in the hope that it will be useful,
  31  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  32  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  33  * GNU General Public License for more details.
  34  *
  35  * \par
  36  * You should have received a copy of the GNU General Public
  37  * License along with this program; if not, write to the Free
  38  * Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  39  * Boston, MA 02110-1301, USA.
  40  *
  41  * \see  http://www.gnu.org/copyleft/gpl.html
  42  ***************************************************************/
  43
  44
  45 #ifdef _MSC_VER
  46 #pragma once
  47 #endif
  48
  49
  50 #ifndef OGDF_NON_PLANAR_CORE_H
  51 #define OGDF_NON_PLANAR_CORE_H
  52
  53
  54 #include <ogdf/basic/Graph.h>
  55 #include <ogdf/basic/NodeArray.h>
  56 #include <ogdf/basic/EdgeArray.h>
  57
  58
  59 namespace ogdf {
  60
  61         class OGDF_EXPORT SPQRTree;
  62         class OGDF_EXPORT Skeleton;
  63
  64
  65 //---------------------------------------------------------
  66 // NonPlanarCore
  67 //---------------------------------------------------------
  68 class OGDF_EXPORT NonPlanarCore
  69 {
  70 public:
  71         NonPlanarCore(const Graph &G);
  72
  73         const Graph &core() const { return m_graph; }
  74         const Graph &originalGraph() const { return *m_pOriginal; }
  75
  76         node original(node v) const { return m_orig[v]; }
  77
  78         bool isVirtual(edge e) const { return m_real[e] == 0; }
  79         edge realEdge(edge e) const { return m_real[e]; }
  80
  81         const EdgeArray<int> &cost() const { return m_cost; }
  82         int cost(edge e) const { return m_cost[e]; }
  83         const List<edge> &mincut(edge e) const { return m_mincut[e]; }
  84
  85 protected:
  86         void markCore(const SPQRTree &T, NodeArray<bool> &mark);
  87         void traversingPath(Skeleton &S, edge eS, List<edge> &path, NodeArray<node> &mapV);
  88
  89         Graph m_graph;
  90         const Graph *m_pOriginal;
  91
  92         NodeArray<node> m_orig;  // corresp. original node
  93         EdgeArray<edge> m_real;  // corresp. original edge (0 if virtual)
  94         EdgeArray<List<edge> > m_mincut;  // traversing path for an edge in the core
  95         EdgeArray<int> m_cost;
  96 }; // class NonPlanarCore
  97
  98
  99 } // end namespace ogdf
 100
 101
 102 #endif