Line data    Source code

       1             : // The libMesh Finite Element Library.
       2             : // Copyright (C) 2002-2025 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
       3             : 
       4             : // This library is free software; you can redistribute it and/or
       5             : // modify it under the terms of the GNU Lesser General Public
       6             : // License as published by the Free Software Foundation; either
       7             : // version 2.1 of the License, or (at your option) any later version.
       8             : 
       9             : // This library is distributed in the hope that it will be useful,
      10             : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12             : // Lesser General Public License for more details.
      13             : 
      14             : // You should have received a copy of the GNU Lesser General Public
      15             : // License along with this library; if not, write to the Free Software
      16             : // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
      17             : 
      18             : 
      19             : 
      20             : #ifndef LIBMESH_HP_SINGULAR_H
      21             : #define LIBMESH_HP_SINGULAR_H
      22             : 
      23             : // Local Includes
      24             : #include "libmesh/libmesh_common.h"
      25             : #include "libmesh/point.h"
      26             : 
      27             : // C++ includes
      28             : #include <list>
      29             : 
      30             : #ifdef LIBMESH_ENABLE_AMR
      31             : 
      32             : namespace libMesh
      33             : {
      34             : 
      35             : // Forward Declarations
      36             : class System;
      37             : 
      38             : 
      39             : /**
      40             :  * This class uses a user-provided list of singularity locations
      41             :  * to choose between h refining and p elevation.
      42             :  * Currently we assume that a set of elements has already been flagged
      43             :  * for h refinement - any elements which do not contain a
      44             :  * user-provided singular point are instead flagged for p refinement.
      45             :  *
      46             :  * \author Roy H. Stogner
      47             :  * \date 2006
      48             :  */
      49             : class HPSingularity
      50             : {
      51             : public:
      52             : 
      53             :   /**
      54             :    * Constructor.
      55             :    */
      56             :   HPSingularity()
      57             :   {
      58             :     libmesh_experimental();
      59             :   }
      60             : 
      61             :   /**
      62             :    * Copy/move ctor, copy/move assignment operator, and destructor are
      63             :    * all explicitly defaulted for this simple class.
      64             :    */
      65             :   HPSingularity (const HPSingularity &) = default;
      66             :   HPSingularity (HPSingularity &&) = default;
      67             :   HPSingularity & operator= (const HPSingularity &) = default;
      68             :   HPSingularity & operator= (HPSingularity &&) = default;
      69           0 :   virtual ~HPSingularity() = default;
      70             : 
      71             :   /**
      72             :    * This pure virtual function must be redefined
      73             :    * in derived classes to take a mesh flagged for h
      74             :    * refinement and potentially change the desired
      75             :    * refinement type.
      76             :    */
      77             :   virtual void select_refinement (System & system);
      78             : 
      79             :   /**
      80             :    * This list, to be filled by the user, should include
      81             :    * all singular points in the solution.
      82             :    */
      83             :   std::list<Point> singular_points;
      84             : };
      85             : 
      86             : } // namespace libMesh
      87             : 
      88             : #endif // #ifdef LIBMESH_ENABLE_AMR
      89             : 
      90             : #endif // LIBMESH_HP_SINGULAR_H