/usr/include/libmesh/edge.h is in libmesh-dev 0.7.1-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 | // $Id: edge.h 4279 2011-03-21 17:01:31Z roystgnr $
// The libMesh Finite Element Library.
// Copyright (C) 2002-2008 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#ifndef __edge_h__
#define __edge_h__
// C++ includes
// Local includes
#include "elem.h"
namespace libMesh
{
// Forward declarations
class Mesh;
/**
* The \p Edge is an element in 1D. It can be thought of as a
* line segment.
*/
// ------------------------------------------------------------
// Edge class definition
class Edge : public Elem
{
public:
/**
* Default line element, takes number of nodes and
* parent. Derived classes implement 'true' elements.
*/
Edge (const unsigned int nn,
Elem* p) :
Elem(nn, Edge::n_sides(), p) {}
/**
* Constructor. Explicitly specifies the number of
* nodes and neighbors for which storage will be allocated.
*/
Edge (const unsigned int nn,
const unsigned int ns,
Elem* p) :
Elem(nn, ns, p) {}
/**
* @returns 1, the dimensionality of the object.
*/
unsigned int dim () const { return 1; }
/**
* @returns 2. Every edge is guaranteed to have at least 2 nodes.
*/
unsigned int n_nodes() const { return 2; }
/**
* @returns 2
*/
unsigned int n_sides() const { return 2; }
/**
* @returns 2. Every edge has exactly two vertices.
*/
unsigned int n_vertices() const { return 2; }
/**
* @returns 0. All 1D elements have no edges.
*/
unsigned int n_edges() const { return 0; }
/**
* @returns 0. All 1D elements have no faces.
*/
unsigned int n_faces() const { return 0; }
/**
* @returns 2
*/
unsigned int n_children() const { return 2; }
/*
* @returns true iff the specified child is on the
* specified side
*/
virtual bool is_child_on_side(const unsigned int c,
const unsigned int s) const;
// /**
// * @returns 1
// */
// unsigned int n_children_per_side(const unsigned int) const { return 1; }
/**
* @returns an id associated with the \p s side of this element.
* The id is not necessariy unique, but should be close. This is
* particularly useful in the \p MeshBase::find_neighbors() routine.
*/
unsigned int key (const unsigned int s) const
{ return this->compute_key(this->node(s)); }
/**
* The \p Elem::side() member returns
* an auto pointer to a NodeElem for the specified node.
*/
AutoPtr<Elem> side (const unsigned int i) const;
/**
* The \p Elem::side() member returns
* an auto pointer to a NodeElem for the specified node.
*/
AutoPtr<Elem> build_side (const unsigned int i,
bool proxy) const;
/**
* The \p Elem::build_edge() member makes no sense for edges.
*/
AutoPtr<Elem> build_edge (const unsigned int) const
//{ libmesh_assert(i < n_nodes()); AutoPtr<DofObject> ap(new Node(*get_node(i))); return ap; }
{ libmesh_error(); AutoPtr<Elem> ap(NULL); return ap; }
protected:
#ifdef LIBMESH_ENABLE_AMR
/**
* Matrix that allows children to inherit boundary conditions.
*/
unsigned int side_children_matrix (const unsigned int,
const unsigned int) const
{ libmesh_error(); return 0; }
#endif
};
// ------------------------------------------------------------
// Edge class member functions
} // namespace libMesh
#endif
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