/usr/include/liggghts/modified_andrew.h is in libliggghts-dev 3.7.0+repack1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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This is the
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╚══════╝╚═╝ ╚═════╝ ╚═════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚══════╝®
DEM simulation engine, released by
DCS Computing Gmbh, Linz, Austria
http://www.dcs-computing.com, office@dcs-computing.com
LIGGGHTS® is part of CFDEM®project:
http://www.liggghts.com | http://www.cfdem.com
Core developer and main author:
Christoph Kloss, christoph.kloss@dcs-computing.com
LIGGGHTS® is open-source, distributed under the terms of the GNU Public
License, version 2 or later. It 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. You should have
received a copy of the GNU General Public License along with LIGGGHTS®.
If not, see http://www.gnu.org/licenses . See also top-level README
and LICENSE files.
LIGGGHTS® and CFDEM® are registered trade marks of DCS Computing GmbH,
the producer of the LIGGGHTS® software and the CFDEM®coupling software
See http://www.cfdem.com/terms-trademark-policy for details.
-------------------------------------------------------------------------
Contributing author and copyright for this file:
Stefan Amberger (JKU Linz)
Christoph Kloss (DCS Computing GmbH, Linz; JKU Linz)
Copyright 2012- DCS Computing GmbH, Linz
Copyright 2009-2012 JKU Linz
------------------------------------------------------------------------- */
#ifndef LMP_MODIFIED_ANDREW_H
#define LMP_MODIFIED_ANDREW_H
#include <vector>
#include "pointers.h"
namespace MODIFIED_ANDREW_AUX{
struct Point {
double x, y;
bool operator <(const Point &p) const {
return x < p.x || (x == p.x && y < p.y);
}
};
struct Circle {
double x, y, r;
};
}
using MODIFIED_ANDREW_AUX::Point;
using MODIFIED_ANDREW_AUX::Circle;
namespace LAMMPS_NS{
class ModifiedAndrew : protected Pointers {
public:
ModifiedAndrew(LAMMPS *lmp);
~ModifiedAndrew();
double area();
void add_contact(Circle c);
inline void clear_contacts()
{ contacts_.clear(); }
private:
double area(std::vector<Point> H);
double area(Point &p, Point &m, Point &q);
double cross(Point O, Point A, Point B);
Point mean_point(std::vector<Point> P);
std::vector<Point> convex_hull(std::vector<Point> P);
std::vector<Point> construct_hull_c_all(double *data0, int ndata0);
int construct_data(std::vector<Point> hull_c, double *&data);
// container for contacts: x, y
std::vector<Point> contacts_;
int npoints_per_circle_;
double **directions_;
};
}
#endif
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