libMesh
quadrature_gauss_lobatto_3D.C
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1 // The libMesh Finite Element Library.
2 // Copyright (C) 2002-2017 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 
23 namespace libMesh
24 {
25 
26 void QGaussLobatto::init_3D(const ElemType type_in,
27  unsigned int p)
28 {
29  switch (type_in)
30  {
31  case HEX8:
32  case HEX20:
33  case HEX27:
34  {
35  // We compute the 3D quadrature rule as a tensor
36  // product of the 1D quadrature rule.
37  QGaussLobatto q1D(1, _order);
38  q1D.init(EDGE2, p);
39  tensor_product_hex(q1D);
40  return;
41  }
42 
43  // We *could* fall back to a Gauss type rule for other types
44  // elements, but the assumption here is that the user has asked
45  // for a Gauss-Lobatto rule, i.e. a rule with integration points
46  // on the element boundary, for a reason.
47  default:
48  libmesh_error_msg("ERROR: Unsupported type: " << type_in);
49  }
50 }
51 
52 } // namespace libMesh
ElemType
Defines an enum for geometric element types.
The libMesh namespace provides an interface to certain functionality in the library.