includeLinks/SteepestDescent.hpp

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/* ***************************************************************** 
    MESQUITE -- The Mesh Quality Improvement Toolkit

    Copyright 2004 Sandia Corporation and Argonne National
    Laboratory.  Under the terms of Contract DE-AC04-94AL85000 
    with Sandia Corporation, the U.S. Government retains certain 
    rights in this software.

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License 
    (lgpl.txt) along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
    diachin2@llnl.gov, djmelan@sandia.gov, mbrewer@sandia.gov, 
    pknupp@sandia.gov, tleurent@mcs.anl.gov, tmunson@mcs.anl.gov      
   
  ***************************************************************** */
#ifndef Mesquite_SteepestDescent_hpp 
#define Mesquite_SteepestDescent_hpp

#include "Mesquite.hpp"
#include "VertexMover.hpp"
#include "ObjectiveFunction.hpp"


namespace Mesquite
{

  class SteepestDescent : public VertexMover 
  {
  public:
    SteepestDescent(ObjectiveFunction* of);

    virtual ~SteepestDescent() { }

    void set_maximum_iteration(int iter){
        maxIteration=iter;}

    void set_lower_gradient_bound(double gradc){
        gradientLessThan=gradc;}
    
    
  protected:
    virtual void initialize(PatchData &pd, MsqError &err);
    virtual void optimize_vertex_positions(PatchData &pd,
                                         MsqError &err);
    virtual void initialize_mesh_iteration(PatchData &pd, MsqError &err);
    virtual void terminate_mesh_iteration(PatchData &pd, MsqError &err);
    virtual void cleanup();

  private:
    double gradientLessThan;
    int maxIteration;
  };
  
}

#endif