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             : #ifndef LIBMESH_ELEM_ASSEMBLY_H
      19             : #define LIBMESH_ELEM_ASSEMBLY_H
      20             : 
      21             : #include "libmesh/reference_counted_object.h"
      22             : #include "libmesh/dense_matrix.h"
      23             : 
      24             : namespace libMesh
      25             : {
      26             : 
      27             : class FEMContext;
      28             : class System;
      29             : class Node;
      30             : 
      31             : /**
      32             :  * ElemAssembly provides a per-element (interior and boundary) assembly
      33             :  * functionality.
      34             :  *
      35             :  * \author David J. Knezevic
      36             :  * \date 2011
      37             :  */
      38             : class ElemAssembly : public ReferenceCountedObject<ElemAssembly>
      39             : {
      40             : public:
      41             : 
      42             :   /**
      43             :    * Constructor.
      44             :    */
      45           0 :   ElemAssembly () = default;
      46             : 
      47             :   /**
      48             :    * Destructor.
      49             :    */
      50           0 :   virtual ~ElemAssembly () = default;
      51             : 
      52             :   /**
      53             :    * Perform the element interior assembly.
      54             :    */
      55       39600 :   virtual void interior_assembly(FEMContext &) { }
      56             : 
      57             :   /**
      58             :    * Perform the element boundary assembly.
      59             :    */
      60       89176 :   virtual void boundary_assembly(FEMContext &) { }
      61             : 
      62             :   /**
      63             :    * Get values to add to the matrix or rhs vector based on \p node.
      64             :    * This allows one to impose point loads or springs, for example.
      65             :    */
      66             :   virtual void
      67      305700 :   get_nodal_values(std::vector<dof_id_type>& ,
      68             :                    DenseMatrix<Number>& ,
      69             :                    DenseVector<Number>& ,
      70             :                    const System & ,
      71             :                    const Node &)
      72             :   {
      73             :     // Do nothing by default
      74      305700 :   }
      75             : 
      76             : protected:
      77             : 
      78             : };
      79             : 
      80             : }
      81             : 
      82             : #endif // LIBMESH_ELEM_ASSEMBLY_H