ls_curvature2d.h

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/*
 * Copyright (c) 2015:  G-CSC, Goethe University Frankfurt
 * Authors: Christian Wehner, Dmitriy Logashenko
 * 
 * This file is part of UG4.
 * 
 * UG4 is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 3 (as published by the
 * Free Software Foundation) with the following additional attribution
 * requirements (according to LGPL/GPL v3 §7):
 * 
 * (1) The following notice must be displayed in the Appropriate Legal Notices
 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (2) The following notice must be displayed at a prominent place in the
 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (3) The following bibliography is recommended for citation and must be
 * preserved in all covered files:
 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
 *   parallel geometric multigrid solver on hierarchically distributed grids.
 *   Computing and visualization in science 16, 4 (2013), 151-164"
 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
 *   flexible software system for simulating pde based models on high performance
 *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
 * 
 * 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 Lesser General Public License for more details.
 */
 
#ifndef __H__UG__PLUGINS__LEVEL_SET__LS_CURVATURE2D_H__
#define __H__UG__PLUGINS__LEVEL_SET__LS_CURVATURE2D_H__
 
#include <vector>
 
#include "common/common.h"
 
namespace ug{
namespace LevelSet{
 
template<typename TGridFunction>
class LevelSetCurvature
{
  typedef typename TGridFunction::domain_type domain_type;
  
  typedef typename TGridFunction::algebra_type algebra_type;
 
  static const int dim = domain_type::dim;
 
public:
 
  LevelSetCurvature()
  : m_exactcurvatureknown (false)
  {};
 
  void exact_curvature(number kappa)
  {
    m_exactcurvatureknown = true;
    m_exactcurv = kappa;
  };
 
  bool computeElementCurvature2d(number& kappa,size_t elementnoc,const std::vector<MathVector<dim> >& co,std::vector<number> phi,size_t order);
  bool computeElementCurvature2d2(number& kappa,size_t elementnoc,const std::vector<MathVector<dim> >& co,std::vector<number> phi,size_t order,number nodefactor);
  bool computeElementCurvatureOnGrid2d(TGridFunction& u,size_t order,number leastSquaresFactor);
  bool computeElementCurvatureFromSides(TGridFunction& u,size_t order,number leastSquaresFactor);
 
private:
 
  bool m_exactcurvatureknown;
  number m_exactcurv;
};
 
} // end namespace LevelSet
} // end namespace ug
 
// include implementation
#include "ls_curvature2d_impl.h"
 
#endif /* __H__UG__PLUGINS__LEVEL_SET__LS_CURVATURE2D_H__ */
 
/* End of File */