element_orientation_data.h

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/*
 * Copyright (c) 2021 - :  G-CSC, Goethe University Frankfurt
 * Author: Arne Naegel
 * 
 * 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.
 */
 
/*
 * User data of a subset indicator (1 in the subset, 0 everywhere else)
 */
#ifndef __H__UG__LIB_DISC__SPATIAL_DISC__USER_DATA__LINE_USER_DATA__
#define __H__UG__LIB_DISC__SPATIAL_DISC__USER_DATA__LINE_USER_DATA__
 
#include <vector>
 
// ug4 headers
#include "common/common.h"
#include "common/math/ugmath.h"
#include "lib_disc/spatial_disc/user_data/std_user_data.h"
 
namespace ug {
 
template <typename TDomain>
class EdgeOrientation
  : public StdUserData<EdgeOrientation<TDomain>, MathVector<TDomain::dim>, TDomain::dim>
{
public:
  static const int dim = TDomain::dim;
 
  typedef MathVector<dim> return_type;
 
  typedef StdUserData<EdgeOrientation<TDomain>, MathVector<TDomain::dim>, TDomain::dim, void> base_type;
  typedef CplUserData<MathVector<TDomain::dim>, TDomain::dim> cpl_user_data;
 
 
  
public:
 
  EdgeOrientation(SmartPtr<TDomain> domain) : m_spDomain(domain)
  {}
 
  virtual bool continuous () const {return false;}
 
  virtual bool requires_grid_fct () const {return true;}
 
  void operator() (return_type & vValue, const MathVector<dim> & globIP, number time, int si) const
  { UG_THROW("SubsetIndicatorUserData: Element required for evaluation, but not passed. Cannot evaluate."); }
 
  void operator() (return_type vValue [], const MathVector<dim> vGlobIP [], number time, int si, const size_t nip) const
  { UG_THROW("SubsetIndicatorUserData: Element required for evaluation, but not passed. Cannot evaluate."); }
 
 
  inline void elem_evaluate(return_type &delta, GridObject * elem) const
  {
    auto& aaPos = m_spDomain->position_accessor();
    EdgeVertices *e = dynamic_cast<EdgeVertices*> (elem);
    UG_ASSERT(e != NULL, "ERROR: No edge! ");
 
    VecSubtract(delta, aaPos[e->vertex(1)], aaPos[e->vertex(0)]);   // v = e_1 - e_0
    delta /= VecLength(delta);                    // normalize
  }
 
 
 
  template <int refDim>
  inline void evaluate
  (
    return_type vValue [],
    const MathVector<dim> vGlobIP [],
    number time,
    int si,
    GridObject * elem,
    const MathVector<dim> vCornerCoords [],
    const MathVector<refDim> vLocIP [],
    const size_t nip,
    LocalVector * u,
    const MathMatrix<refDim, dim> * vJT = NULL
  ) const
  {
 
    MathVector<dim> delta;
    elem_evaluate(delta, elem);
 
    for (size_t i = 0; i < nip; i++)
    {
      vValue[i] = delta;
    }
 
  };
  
      virtual void compute(LocalVector* u, GridObject* elem,
                           const MathVector<dim> vCornerCoords[], bool bDeriv = false)
      {
        for(size_t s = 0; s < this->num_series(); ++s)
            for(size_t ip = 0; ip < this->num_ip(s); ++ip)
              elem_evaluate(this->value(s,ip), elem);
      }
 
      virtual void compute(LocalVectorTimeSeries* u, GridObject* elem,
                           const MathVector<dim> vCornerCoords[], bool bDeriv = false)
      {
        for(size_t s = 0; s < this->num_series(); ++s)
          for(size_t ip = 0; ip < this->num_ip(s); ++ip)
            elem_evaluate(this->value(s,ip), elem);
      }
 
 
protected:
  SmartPtr<TDomain> m_spDomain;
};
 
} // end namespace ug
 
#endif // __H__UG__LIB_DISC__SPATIAL_DISC__USER_DATA__LINE_USER_DATA__
 
/* End of File */