ext/OGDF/src/energybased/WSPD.cpp

   1 /*
   2  * $Revision: 2565 $
   3  *
   4  * last checkin:
   5  *   $Author: gutwenger $
   6  *   $Date: 2012-07-07 17:14:54 +0200 (Sa, 07. Jul 2012) $
   7  ***************************************************************/
   8
   9 /** \file
  10  * \brief Implementation of class WSPD (well-separated pair decomposition).
  11  *
  12  * \author Martin Gronemann
  13  *
  14  * \par License:
  15  * This file is part of the Open Graph Drawing Framework (OGDF).
  16  *
  17  * \par
  18  * Copyright (C)<br>
  19  * See README.txt in the root directory of the OGDF installation for details.
  20  *
  21  * \par
  22  * This program is free software; you can redistribute it and/or
  23  * modify it under the terms of the GNU General Public License
  24  * Version 2 or 3 as published by the Free Software Foundation;
  25  * see the file LICENSE.txt included in the packaging of this file
  26  * for details.
  27  *
  28  * \par
  29  * This program is distributed in the hope that it will be useful,
  30  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  31  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  32  * GNU General Public License for more details.
  33  *
  34  * \par
  35  * You should have received a copy of the GNU General Public
  36  * License along with this program; if not, write to the Free
  37  * Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  38  * Boston, MA 02110-1301, USA.
  39  *
  40  * \see  http://www.gnu.org/copyleft/gpl.html
  41  ***************************************************************/
  42
  43 #include "WSPD.h"
  44 #include "FastUtils.h"
  45
  46 namespace ogdf {
  47
  48 WSPD::WSPD(__uint32 maxNumNodes) : m_maxNumNodes(maxNumNodes)
  49 {
  50         m_maxNumPairs = maxNumNodes*2;
  51         m_numPairs = 0;
  52         allocate();
  53         clear();
  54 }
  55
  56
  57 WSPD::~WSPD(void)
  58 {
  59         deallocate();
  60 }
  61
  62
  63 unsigned long WSPD::sizeInBytes() const
  64 {
  65         return m_maxNumNodes*sizeof(WSPDNodeInfo) +
  66                 m_maxNumPairs*sizeof(WSPDPairInfo);
  67 }
  68
  69
  70 void WSPD::allocate()
  71 {
  72         m_nodeInfo = (WSPDNodeInfo*)MALLOC_16(m_maxNumNodes*sizeof(WSPDNodeInfo));
  73         m_pairs = (WSPDPairInfo*)MALLOC_16(m_maxNumPairs*sizeof(WSPDPairInfo));
  74 }
  75
  76
  77 void WSPD::deallocate()
  78 {
  79         FREE_16(m_nodeInfo);
  80         FREE_16(m_pairs);
  81 }
  82
  83
  84 void WSPD::clear()
  85 {
  86         for (__uint32 i = 0; i < m_maxNumNodes; i++)
  87         {
  88                 m_nodeInfo[i].numWSNodes = 0;
  89         }
  90         m_numPairs = 0;
  91 }
  92
  93 } // end of namespace ogdf