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lammps/src/nstencil_half_multi_2d_newton_tri.cpp
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nstencil_half_multi_2d_newton_tri.cpp
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/* ----------------------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
#include "nstencil_half_multi_2d_newton_tri.h"
#include "neighbor.h"
#include "neigh_list.h"
#include "atom.h"
using namespace LAMMPS_NS;
/* ---------------------------------------------------------------------- */
NStencilHalfMulti2dNewtonTri::
NStencilHalfMulti2dNewtonTri(LAMMPS *lmp) : NStencil(lmp) {}
/* ----------------------------------------------------------------------
create stencil based on bin geometry and cutoff
------------------------------------------------------------------------- */
void NStencilHalfMulti2dNewtonTri::create()
{
int i,j,n;
double rsq,typesq;
int *s;
double *distsq;
int ntypes = atom->ntypes;
for (int itype = 1; itype <= ntypes; itype++) {
typesq = cuttypesq[itype];
s = stencil_multi[itype];
distsq = distsq_multi[itype];
n = 0;
for (j = 0; j <= sy; j++)
for (i = -sx; i <= sx; i++) {
rsq = bin_distance(i,j,0);
if (rsq < typesq) {
distsq[n] = rsq;
s[n++] = j*mbinx + i;
}
}
nstencil_multi[itype] = n;
}
}
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