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             : // Local includes
      21             : #include "libmesh/quadrature_gauss_lobatto.h"
      22             : #include "libmesh/enum_to_string.h"
      23             : #include "libmesh/quadrature_gauss.h"
      24             : 
      25             : namespace libMesh
      26             : {
      27             : 
      28        1846 : void QGaussLobatto::init_2D()
      29             : {
      30        1846 :   switch (_type)
      31             :     {
      32        1846 :     case QUAD4:
      33             :     case QUADSHELL4:
      34             :     case QUAD8:
      35             :     case QUADSHELL8:
      36             :     case QUAD9:
      37             :     case QUADSHELL9:
      38             :       {
      39             :         // We compute the 2D quadrature rule as a tensor
      40             :         // product of the 1D quadrature rule.
      41        1950 :         QGaussLobatto q1D(1, get_order());
      42        1846 :         tensor_product_quad(q1D);
      43          52 :         return;
      44             :       }
      45             : 
      46             :       // We fall back on a Gauss type rule for other types of elements,
      47             :       // but we warn the user (once) that we are doing this instead of
      48             :       // silently switching out quadrature rules on them.
      49           0 :     default:
      50             :       {
      51             :         libmesh_warning("Warning: QGaussLobatto falling back on QGauss rule "
      52             :                         "for unsupported Elem type: " << Utility::enum_to_string(_type));
      53             : 
      54           0 :         QGauss gauss_rule(_dim, _order);
      55           0 :         gauss_rule.init(*this);
      56             : 
      57             :         // Swap points and weights with the about-to-be destroyed rule.
      58           0 :         _points.swap (gauss_rule.get_points() );
      59           0 :         _weights.swap(gauss_rule.get_weights());
      60             :       }
      61             :     }
      62             : }
      63             : 
      64             : } // namespace libMesh