src/QualityMetric/DFT/I_DFT_NoBarrier.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 I_DFT_NO_BARRIER_hpp
#define I_DFT_NO_BARRIER_hpp

#include "I_DFT.hpp"

namespace Mesquite
{
  
  class I_DFT_NoBarrier : public I_DFT
  {
  public:
    
    I_DFT_NoBarrier()
    {
      set_name("I_DFT_NoBarrier");
      p_set_alpha(1.0/2.0);
      p_set_beta(1.0);
      p_set_gamma(0.0);
        //Note:  it seems as the use barrier delta should be false.  However,
        // since we are doing a calculation like ( pow(f(delta,x), gamma) )
        // having a non-zero f(delta,x) provides numerical stability.
      p_set_use_barrier_delta(false);      
   }
    
    virtual ~I_DFT_NoBarrier()
       {};
  };
  
} //namespace


#endif // I_DFT__NO_BARRIER_hpp