/usr/include/libmesh/cell_hex.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 | // $Id: cell_hex.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 __cell_hex_h__
#define __cell_hex_h__
// C++ includes
// Local includes
#include "cell.h"
namespace libMesh
{
/**
* The \p Hex is an element in 3D with 6 sides.
*/
// ------------------------------------------------------------
// Hex class definition
class Hex : public Cell
{
public:
/**
* Default brick element, takes number of nodes and
* parent. Derived classes implement 'true' elements.
*/
Hex(const unsigned int nn, Elem* p);
/**
* @returns 6
*/
unsigned int n_sides() const { return 6; }
/**
* @returns 8. All hexahedrals have 8 vertices.
*/
unsigned int n_vertices() const { return 8; }
/**
* @returns 12. All hexahedrals have 12 edges.
*/
unsigned int n_edges() const { return 12; }
/**
* @returns 6. All hexahedrals have 6 faces.
*/
unsigned int n_faces() const { return 6; }
/**
* @returns 8
*/
unsigned int n_children() const { return 8; }
/*
* @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 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;
/**
* @returns a primitive (4-noded) quad for
* face i.
*/
AutoPtr<Elem> side (const unsigned int i) const;
/**
* Based on the quality metric q specified by the user,
* returns a quantitative assessment of element quality.
*/
Real quality (const ElemQuality q) const;
/**
* Returns the suggested quality bounds for
* the hex based on quality measure q. These are
* the values suggested by the CUBIT User's Manual.
*/
std::pair<Real, Real> qual_bounds (const ElemQuality q) const;
protected:
/**
* Matrix that tells which vertices define the location
* of mid-side (or second-order) nodes. This matrix
* is kept here, since the matrix (for the first 12
* higher-order nodes) is identical for \p Hex20 and
* \p Hex27.
*/
static const unsigned short int _second_order_adjacent_vertices[12][2];
/**
* Vector that names a child sharing each second order node.
*/
static const unsigned short int _second_order_vertex_child_number[27];
/**
* Vector that names the child vertex index for each second order node.
*/
static const unsigned short int _second_order_vertex_child_index[27];
};
// ------------------------------------------------------------
// Hex class member functions
inline
Hex::Hex(const unsigned int nn, Elem* p) :
Cell(nn, Hex::n_sides(), p)
{
}
} // namespace libMesh
#endif
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