File: OGDFStressMajorization.cpp

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#include <ogdf/energybased/StressMajorizationSimple.h>

#include "tulip2ogdf/OGDFLayoutPluginBase.h"

namespace {

const char * paramHelp[] = {
  HTML_HELP_OPEN()
  HTML_HELP_DEF( "type", "int" )
  HTML_HELP_BODY()
  "Sets a fixed number of iterations for stress majorization in main step."
  HTML_HELP_CLOSE(),
  HTML_HELP_OPEN()
  HTML_HELP_DEF( "type", "double" )
  HTML_HELP_BODY()
  "Sets the value for the stop tolerance, below which the system is regarded stable (balanced) and the optimization stopped. "
  HTML_HELP_CLOSE(),
  HTML_HELP_OPEN()
  HTML_HELP_DEF( "type", "bool" )
  HTML_HELP_BODY()
  "If set to true, the given layout is used for the initial positions."
  HTML_HELP_CLOSE(),
  HTML_HELP_OPEN()
  HTML_HELP_DEF( "type", "bool" )
  HTML_HELP_BODY()
  "f set to true, number of iterations is computed depending on G."
  HTML_HELP_CLOSE(),
  HTML_HELP_OPEN()
  HTML_HELP_DEF( "type", "int" )
  HTML_HELP_BODY()
  "Sets the number of global iterations to i."
  HTML_HELP_CLOSE(),
  HTML_HELP_OPEN()
  HTML_HELP_DEF( "type", "int" )
  HTML_HELP_BODY()
  "Sets the number of local iterations to i."
  HTML_HELP_CLOSE(),
  HTML_HELP_OPEN()
  HTML_HELP_DEF( "type", "bool" )
  HTML_HELP_BODY()
  "If set to true, radial constraints are added."
  HTML_HELP_CLOSE(),
  HTML_HELP_OPEN()
  HTML_HELP_DEF( "type", "bool" )
  HTML_HELP_BODY()
  "If set to true, upward constraints are added. "
  HTML_HELP_CLOSE(),
};
}

// comments below have been extracted from OGDF/src/energybased/StressMajorizationSimple.cpp
/** \addtogroup layout */
/*@{*/
/**
 * Implementation of stress-majorization layout algorithm.
 *
 * \author Karsten Klein
 *
 * \par License:
 * This is part of the Open Graph Drawing Framework (OGDF).
 * Copyright (C) 2005-2009
 *
 * \par
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * Version 2 or 3 as published by the Free Software Foundation
 * and appearing in the files LICENSE_GPL_v2.txt and
 * LICENSE_GPL_v3.txt included in the packaging of this file.
 *
 * \par
 * In addition, as a special exception, you have permission to link
 * this software with the libraries of the COIN-OR Osi project
 * (http://www.coin-or.org/projects/Osi.xml), all libraries required
 * by Osi, and all LP-solver libraries directly supported by the
 * COIN-OR Osi project, and distribute executables, as long as
 * you follow the requirements of the GNU General Public License
 * in regard to all of the software in the executable aside from these
 * third-party libraries.
 *
 * \par
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * \par
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 * \see  http://www.gnu.org/copyleft/gpl.html
 ***************************************************************/
class OGDFStressMajorization : public OGDFLayoutPluginBase {

public:

  OGDFStressMajorization(const tlp::PropertyContext &context) :OGDFLayoutPluginBase(context, new ogdf::StressMajorization()) {
    addParameter<int>("iterations", paramHelp[0], "300");
    addParameter<double>("stop tolerance", paramHelp[1], "0.001");
    addParameter<bool>("used layout", paramHelp[2], "false");
    addParameter<bool>("compute max iterations", paramHelp[3], "true");
    addParameter<int>("global iterations", paramHelp[4], "50");
    addParameter<int>("local iterations", paramHelp[5], "50");
    addParameter<bool>("radial", paramHelp[6], "false");
    addParameter<bool>("upward", paramHelp[7], "false");
  }
  ~OGDFStressMajorization() {}

  void beforeCall() {
    ogdf::StressMajorization *stressm = static_cast<ogdf::StressMajorization*>(ogdfLayoutAlgo);

    if (dataSet != 0) {
      double dval = 0;
      int ival = 0;
      bool bval = false;

      if (dataSet->get("iterations", ival))
        stressm->setIterations(ival);

      if (dataSet->get("stop tolerance", dval))
        stressm->setStopTolerance(dval);

      if (dataSet->get("use layout", bval))
        stressm->setUseLayout(bval);

      if (dataSet->get("compute max iterations", bval))
        stressm->computeMaxIterations(bval);

      if (dataSet->get("global iterations", ival))
        stressm->setMaxGlobalIterations(ival);

      if (dataSet->get("local iterations", ival))
        stressm->setMaxLocalIterations(ival);

      if (dataSet->get("radial", bval))
        stressm->radial(bval);

      if (dataSet->get("upward", bval))
        stressm->upward(bval);
    }
  }

};
/*@}*/

LAYOUTPLUGINOFGROUP(OGDFStressMajorization,"Stress Majorization (OGDF)","Karsten Klein","12/11/2007","Ok","1.0","Force Directed");