/usr/include/liggghts/fix_neighlist_mesh.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:
Christoph Kloss (DCS Computing GmbH, Linz)
Christoph Kloss (JKU Linz)
Richard Berger (JKU Linz)
Philippe Seil (JKU Linz)
Copyright 2012- DCS Computing GmbH, Linz
Copyright 2009-2012 JKU Linz
------------------------------------------------------------------------- */
#ifdef FIX_CLASS
FixStyle(neighlist/mesh,FixNeighlistMesh)
#else
#ifndef LMP_FIX_NEIGHLIST_MESH_H
#define LMP_FIX_NEIGHLIST_MESH_H
#include "fix.h"
#include "container.h"
#include "atom_vec_ellipsoid.h"
#include <vector>
#include <algorithm>
namespace LAMMPS_NS
{
struct BinBoundary {
int xlo;
int xhi;
int ylo;
int yhi;
int zlo;
int zhi;
};
struct TriangleNeighlist {
std::vector<int> contacts;
std::vector<int> bins;
BinBoundary boundary;
int nchecked;
TriangleNeighlist() : nchecked(0) {}
};
class FixNeighlistMesh : public Fix
{
public:
FixNeighlistMesh(LAMMPS *lmp, int narg, char **arg);
virtual
~FixNeighlistMesh();
virtual int setmask();
virtual void post_create();
virtual void pre_delete(bool unfixflag);
virtual void initializeNeighlist();
virtual void setup_pre_force(int);
virtual void min_setup_pre_force(int);
virtual void pre_neighbor();
virtual void pre_force(int vflag);
virtual void min_pre_force(int vflag);
virtual void post_run();
const std::vector<int> & get_contact_list(int iTri) const {
return triangles[iTri].contacts;
}
virtual int getSizeNumContacts();
void enableTotalNumContacts(bool enable)
{
globalNumAllContacts_ = enable;
}
int getTotalNumContacts() { return numAllContacts_; }
bool contactInList(int iTri, int iAtom)
{
std::vector<int> & neighbors = triangles[iTri].contacts;
return std::find(neighbors.begin(), neighbors.end(), iAtom) != neighbors.end();
}
inline class FixPropertyAtom* fix_nneighs()
{ return fix_nneighs_; };
// groupbit merged from groupbit of this fix and fix wall/gran (if exists)
int groupbit_wall_mesh;
protected:
void handleTriangle(int iTri);
void getBinBoundariesFromBoundingBox(class BoundingBox &b, int &ixMin,int &ixMax,int &iyMin,int &iyMax,int &izMin,int &izMax);
void getBinBoundariesForTriangle(int iTri, int &ixMin,int &ixMax,int &iyMin,int &iyMax,int &izMin,int &izMax);
class FixMeshSurface *caller_;
class TriMesh *mesh_;
class FixPropertyAtom *fix_nneighs_;
char *fix_nneighs_name_;
bool buildNeighList;
std::vector<TriangleNeighlist> triangles;
int numAllContacts_;
bool globalNumAllContacts_;
int mbinx,mbiny,mbinz,maxhead, *bins, *binhead;
double skin;
// max distance from triangle to particle center
double distmax;
double **x, *r;
bool changingMesh;
bool changingDomain;
bigint last_bin_update;
void generate_bin_list(size_t nall);
class AtomVecEllipsoid *avec;
bool otherList_;
private:
void checkBin(AtomVecEllipsoid::Bonus *bonus, std::vector<int>& neighbors, int& nchecked, double contactDistanceFactor, int *mask, int nlocal, int iBin, int iTri, bool haveNonSpherical, int *ellipsoid, double *shape);
};
} /* namespace LAMMPS_NS */
#endif /* FIX_MESH_NEIGHLIST_H_ */
#endif /* FIX_CLASS */
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