hp_singular.C

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2026 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
 
// 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 along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
// C++ includes
 
// Local Includes
#include "libmesh/elem.h"
#include "libmesh/hp_singular.h"
#include "libmesh/libmesh_logging.h"
#include "libmesh/mesh_base.h"
#include "libmesh/system.h"
 
#ifdef LIBMESH_ENABLE_AMR
 
namespace libMesh
{
 
//-----------------------------------------------------------------
// HPSingularity implementations
 
 
void HPSingularity::select_refinement (System & system)
{
  LOG_SCOPE("select_refinement()", "HPSingularity");
 
  // The current mesh
  MeshBase & mesh = system.get_mesh();
 
  for (auto & elem : mesh.active_element_ptr_range())
    {
      // We're only checking elements that are already flagged for h
      // refinement
      if (elem->refinement_flag() != Elem::REFINE)
        continue;
 
      elem->set_p_refinement_flag(Elem::REFINE);
      elem->set_refinement_flag(Elem::DO_NOTHING);
 
      for (const auto & pt : singular_points)
        if (elem->contains_point(pt))
          {
            elem->set_p_refinement_flag(Elem::DO_NOTHING);
            elem->set_refinement_flag(Elem::REFINE);
            break;
          }
    }
}
 
} // namespace libMesh
 
#endif // #ifdef LIBMESH_ENABLE_AMR