libMesh
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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
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
22
23 namespace libMesh
24 {
25
26
27
28 void QTrap::init_2D(const ElemType type_in,
29  unsigned int)
30 {
31 #if LIBMESH_DIM > 1
32
33  //-----------------------------------------------------------------------
35  switch (type_in)
36  {
37
38
39  //---------------------------------------------
46  {
47
48  // We compute the 2D quadrature rule as a tensor
49  // product of the 1D quadrature rule.
50  QTrap q1D(1);
51  q1D.init(EDGE2);
52
54
55  return;
56  }
57
58
59  //---------------------------------------------
61  case TRI3:
62  case TRISHELL3:
63  case TRI6:
64  {
65  _points.resize(3);
66  _weights.resize(3);
67
68  _points[0](0) = 0.;
69  _points[0](1) = 0.;
70
71  _points[1](0) = 1.;
72  _points[1](1) = 0.;
73
74  _points[2](0) = 0.;
75  _points[2](1) = 1.;
76
77
78  _weights[0] = 1./6.;
79  _weights[1] = 1./6.;
80  _weights[2] = 1./6.;
81
82  return;
83  }
84
85
86  //---------------------------------------------
87  // Unsupported type
88  default:
89  libmesh_error_msg("Element type not supported!:" << type_in);
90  }
91 #endif
92 }
93
94 } // namespace libMesh
virtual void init(const ElemType type=INVALID_ELEM, unsigned int p_level=0)
Initializes the data structures for a quadrature rule for an element of type type.
ElemType
Defines an enum for geometric element types.
The libMesh namespace provides an interface to certain functionality in the library.
std::vector< Point > _points
The locations of the quadrature points in reference element space.