/usr/include/liggghts/fix_template_sphere.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:
(if not contributing author is listed, this file has been contributed
by the core developer)
Copyright 2012- DCS Computing GmbH, Linz
Copyright 2009-2012 JKU Linz
------------------------------------------------------------------------- */
#ifdef FIX_CLASS
FixStyle(particletemplate/sphere,FixTemplateSphere)
#else
#ifndef LMP_FIX_TEMPLATE_SPHERE_H
#define LMP_FIX_TEMPLATE_SPHERE_H
#include <vector>
#include <utility>
#include "fix.h"
#include "fix_property_atom.h"
#include "random_park.h"
#include "probability_distribution.h"
#include "vector_liggghts.h"
namespace PARTICLE_PACKING
{
class Sphere
{
public:
Sphere() :
pos_x(0.0),
pos_y(0.0),
pos_z(0.0),
radius(0.0),
density(0.0),
is_local(false),
id(0)
{}
Sphere(const double * const _x, const double _radius, const double _density, const int _id) :
pos_x(_x[0]),
pos_y(_x[1]),
pos_z(_x[2]),
radius(_radius),
density(_density),
is_local(false),
id(_id)
{}
void move_particle(const double * const shift)
{
pos_x += shift[0];
pos_y += shift[1];
pos_z += shift[2];
}
inline void get_pos(double * const _x) const
{
_x[0] = pos_x;
_x[1] = pos_y;
_x[2] = pos_z;
}
void set_local()
{ is_local = true; }
void unset_local()
{ is_local = false; }
bool get_local() const
{ return is_local; }
double get_radius() const
{ return radius; }
double get_density() const
{ return density; }
double get_volume() const
{ return radius*radius*radius*4.18879020478639098; }
int get_id() const
{ return id; }
size_t n_fix_properties() const
{ return fix_properties.size(); }
size_t fix_property_nentries(const int i) const
{ return fix_property_values[i].size(); }
LAMMPS_NS::FixPropertyAtom* get_fix_property(const int i) const
{ return fix_properties[i]; }
double fix_property_value(const int i, const int j) const
{ return fix_property_values[i][j]; }
void init_fix_properties(std::vector<std::pair<LAMMPS_NS::FixPropertyAtom*, int> > &fpa_list)
{
std::vector<std::pair<LAMMPS_NS::FixPropertyAtom*, int> >::iterator it = fpa_list.begin();
size_t n = 0;
for (; it != fpa_list.end(); it++)
{
if (it->first)
n++;
}
fix_properties.resize(n);
fix_property_values.resize(n);
for (size_t i = 0, j = 0; i < fpa_list.size(); i++)
{
if (!fpa_list[i].first)
continue;
fix_properties[j] = fpa_list[i].first;
size_t m = fpa_list[i].second;
fix_property_values[j].resize(m);
j++;
}
}
void set_fix_property_values(const int i, const double * const data)
{
for (size_t j = 0; j < fix_property_values[i].size(); j++)
fix_property_values[i][j] = data[j];
}
protected:
double pos_x, pos_y, pos_z, radius, density;
bool is_local;
int id;
std::vector<LAMMPS_NS::FixPropertyAtom*> fix_properties;
std::vector<std::vector<double> > fix_property_values;
};
}
namespace LAMMPS_NS {
class FixTemplateSphere : public Fix {
public:
FixTemplateSphere(class LAMMPS *, int, char **);
~FixTemplateSphere();
// inherited from Fix
virtual void post_create(){}
virtual int setmask();
void write_restart(FILE *);
void restart(char *);
// access to protected properties
virtual double volexpect();
virtual double massexpect();
bool use_rad_for_cut_neigh_and_ghost()
{ return !relative; }
bool is_relative()
{ return relative; }
virtual double min_rad();
virtual double max_rad();
virtual double max_r_bound();
virtual int number_spheres();
virtual int maxtype();
virtual int mintype();
class Region *region();
// single particle generation, used by fix insert/* commands
virtual void randomize_single();
class ParticleToInsert *pti;
// many particle generation, used by fix insert commands
virtual void init_ptilist(int n_random_max, const bool enforce_single = false, FixPropertyAtom * const fix_release = NULL);
virtual void delete_ptilist();
virtual void randomize_ptilist(int,int,int distorder);
virtual void direct_set_ptlist(const int i, const void * const data, const int distribution_groupbit, const int distorder);
int n_pti_max;
class ParticleToInsert **pti_list;
// generates hash for identification
virtual unsigned int generate_hash();
virtual void finalize_insertion() {}
inline int random_insertion_state()
{ return random_insertion->state(); }
inline int random_mc_state()
{ return random_mc->state(); }
protected:
int iarg;
class Region *reg;
class FixRegionVariable *reg_var;
// random generator
class RanPark *random_insertion;
class RanPark *random_mc;
int seed_insertion;
int seed_mc;
// properties of particle template
int atom_type;
class LMP_PROBABILITY_NS::PDF *pdf_radius;
class LMP_PROBABILITY_NS::PDF *pdf_density;
double volume_expect;
double mass_expect;
double vol_limit;
bool relative;
void add_hash_value(const int value, unsigned int &start, unsigned int &hash);
void add_hash_value(double value, unsigned int &start, unsigned int &hash);
};
}
#endif
#endif
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