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             : #ifndef LIBMESH_FACE_INF_QUAD4_H
      20             : #define LIBMESH_FACE_INF_QUAD4_H
      21             : 
      22             : 
      23             : #include "libmesh/libmesh_config.h"
      24             : 
      25             : #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
      26             : 
      27             : // Local includes
      28             : #include "libmesh/face_inf_quad.h"
      29             : 
      30             : namespace libMesh
      31             : {
      32             : 
      33             : /**
      34             :  * The \p INFQUAD4 is an infinite element in 2D composed of 4 nodes.
      35             :  * It is numbered like this:
      36             :  * \verbatim
      37             :  *              2           3
      38             :  *   INFQUAD4: o           o   closer to infinity
      39             :  *             |           |
      40             :  *             |           |
      41             :  *             |           |
      42             :  *             |           |
      43             :  *             |           |
      44             :  *             o-----------o   base side
      45             :  *             0           1
      46             :  * \endverbatim
      47             :  *
      48             :  * \author Daniel Dreyer
      49             :  * \date 2002
      50             :  * \brief A 2D infinite quadrilateral element with 4 nodes.
      51             :  */
      52             : class InfQuad4 : public InfQuad
      53             : {
      54             : public:
      55             : 
      56             :   /**
      57             :    * Constructor.  By default this element has no parent.
      58             :    */
      59             :   explicit
      60       16419 :   InfQuad4 (Elem * p=nullptr) :
      61       16419 :     InfQuad(num_nodes, p, _nodelinks_data) {}
      62             : 
      63             :   InfQuad4 (InfQuad4 &&) = delete;
      64             :   InfQuad4 (const InfQuad4 &) = delete;
      65             :   InfQuad4 & operator= (const InfQuad4 &) = delete;
      66             :   InfQuad4 & operator= (InfQuad4 &&) = delete;
      67       21691 :   virtual ~InfQuad4() = default;
      68             : 
      69             :   /**
      70             :    * \returns 4.
      71             :    */
      72      171805 :   virtual unsigned int n_nodes() const override { return num_nodes; }
      73             : 
      74             :   /**
      75             :    * \returns \p INFQUAD4.
      76             :    */
      77       67563 :   virtual ElemType type () const override { return INFQUAD4; }
      78             : 
      79             :   /**
      80             :    * \returns 1.
      81             :    */
      82           0 :   virtual unsigned int n_sub_elem() const override { return 1; }
      83             : 
      84             :   /**
      85             :    * \returns \p true if the specified (local) node number is on the
      86             :    * specified side.
      87             :    */
      88             :   virtual bool is_node_on_side(const unsigned int n,
      89             :                                const unsigned int s) const override;
      90             : 
      91             :   virtual std::vector<unsigned int> nodes_on_side(const unsigned int s) const override;
      92             : 
      93             :   virtual std::vector<unsigned int> nodes_on_edge(const unsigned int e) const override;
      94             : 
      95             :   /**
      96             :    * \returns \p true if the specified (local) node number is on the
      97             :    * specified edge (== is_node_on_side in 2D).
      98             :    */
      99          12 :   virtual bool is_node_on_edge(const unsigned int n,
     100             :                                const unsigned int e) const override
     101          12 :   { return this->is_node_on_side(n,e); }
     102             : 
     103             :   /**
     104             :    * \returns \p FIRST.
     105             :    */
     106             :   virtual Order default_order() const override;
     107             : 
     108             :   /**
     109             :    * \returns An \p Edge2 for the base side, or an \p InfEdge2 for
     110             :    * the sides 1, 2.
     111             :    */
     112             :   virtual std::unique_ptr<Elem> build_side_ptr (const unsigned int i) override;
     113             : 
     114             :   /**
     115             :    * Rebuilds an EDGE2 or INFEDGE2 coincident with face i.
     116             :    */
     117             :   virtual void build_side_ptr (std::unique_ptr<Elem> & elem,
     118             :                                const unsigned int i) override;
     119             : 
     120             :   // Avoid hiding deprecated version with different signature
     121             :   using Elem::build_side_ptr;
     122             : 
     123             :   virtual void connectivity(const unsigned int sf,
     124             :                             const IOPackage iop,
     125             :                             std::vector<dof_id_type> & conn) const override;
     126             : 
     127             :   /**
     128             :    * \returns \p true when this element contains the point
     129             :    * \p p.  Customized for this \p InfQuad4, since knowledge
     130             :    * about the envelope can help avoiding slightly more
     131             :    * expensive computations.
     132             :    */
     133             :   virtual bool contains_point (const Point & p, Real tol=TOLERANCE) const override;
     134             : 
     135             :   /**
     136             :    * Geometric constants for InfQuad4.
     137             :    */
     138             :   static const int num_nodes = 4;
     139             :   static const int nodes_per_side = 2;
     140             : 
     141             :   /**
     142             :    * This maps the \f$ j^{th} \f$ node of the \f$ i^{th} \f$ side to
     143             :    * element node numbers.
     144             :    */
     145             :   static const unsigned int side_nodes_map[num_sides][nodes_per_side];
     146             : 
     147             :   ElemType side_type (const unsigned int s) const override final;
     148             : 
     149             :   virtual void flip(BoundaryInfo *) override final;
     150             : 
     151             : protected:
     152             : 
     153             :   /**
     154             :    * Data for links to nodes.
     155             :    */
     156             :   Node * _nodelinks_data[num_nodes];
     157             : 
     158             : 
     159             : 
     160             : #ifdef LIBMESH_ENABLE_AMR
     161             : 
     162             :   /**
     163             :    * Matrix used to create the elements children.
     164             :    */
     165         330 :   virtual Real embedding_matrix (const unsigned int i,
     166             :                                  const unsigned int j,
     167             :                                  const unsigned int k) const override
     168         330 :   { return _embedding_matrix[i][j][k]; }
     169             : 
     170             :   /**
     171             :    * Matrix that computes new nodal locations/solution values
     172             :    * from current nodes/solution.
     173             :    */
     174             :   static const Real _embedding_matrix[num_children][num_nodes][num_nodes];
     175             : 
     176         440 :   LIBMESH_ENABLE_TOPOLOGY_CACHES;
     177             : 
     178             : #endif // LIBMESH_ENABLE_AMR
     179             : 
     180             : };
     181             : 
     182             : 
     183             : } // namespace libMesh
     184             : 
     185             : #endif // ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
     186             : 
     187             : #endif // LIBMESH_FACE_INF_QUAD4_H