/usr/include/dolfin/quadrature/BarycenterQuadrature.h is in libdolfin1.0-dev 1.0.0-1.
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 | // Copyright (C) 2010 Andre Massing
//
// This file is part of DOLFIN.
//
// DOLFIN 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 3 of the License, or
// (at your option) any later version.
//
// DOLFIN 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 DOLFIN. If not, see <http://www.gnu.org/licenses/>.
//
// Modified by Anders Logg, 2010.
//
// First added: 2010-03-17
// Last changed: 2010-04-12
#ifndef __BARYCENTER_QUADRATURE_H
#define __BARYCENTER_QUADRATURE_H
#ifdef HAS_CGAL
#include "BarycenterQuadrature.h"
#include <vector>
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Nef_polyhedron_3.h>
#include <dolfin/mesh/Point.h>
namespace dolfin
{
typedef CGAL::Exact_predicates_exact_constructions_kernel Kernel;
typedef CGAL::Nef_polyhedron_3<Kernel> Nef_polyhedron_3;
/// This class computes the barycenter of an arbitrary polyhedron or
/// polygon in 3D and therefore allows for barycenter quadrature on
/// complex polyhedrons. Note: barycenter quadrature is exact for
/// polynom deg <= 1.
class BarycenterQuadrature
{
public:
/// Create barycenter quadrature rule for given polyhedron
BarycenterQuadrature(const Nef_polyhedron_3& polyhedron);
/// Return points
const std::vector<Point>& points() const
{ return _points; }
/// Return weights
const std::vector<double>& weights() const
{ return _weights; }
/// Return number of quadrature points/weights
uint size() const
{ dolfin_assert(_points.size() == _weights.size()); return _points.size(); }
private:
///Computes barycenter and weight.
void compute_quadrature(const Nef_polyhedron_3 &);
std::vector<Point> _points;
std::vector<double> _weights;
};
}
#endif
#endif
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