Homec4science
Diffusion lammps (master) Browse

lammps/src/region_union.cpp
aaed6ebc330cmaster

Last Change
Raw File

region_union.cpp
View Options

/* ----------------------------------------------------------------------
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 "stdlib.h"
#include "string.h"
#include "region_union.h"
#include "domain.h"
#include "error.h"
using namespace LAMMPS_NS;
#define MIN(A,B) ((A) < (B)) ? (A) : (B)
#define MAX(A,B) ((A) > (B)) ? (A) : (B)
#define BIG 1.0e20
/* ---------------------------------------------------------------------- */
RegUnion::RegUnion(LAMMPS *lmp, int narg, char **arg) : Region(lmp, narg, arg)
{
if (narg < 5) error->all("Illegal region command");
int n = atoi(arg[2]);
if (n < 2) error->all("Illegal region command");
options(narg-(n+3),&arg[n+3]);
// build list of regions to union
list = new int[n];
nregion = 0;
int iregion;
for (int iarg = 0; iarg < n; iarg++) {
iregion = domain->find_region(arg[iarg+3]);
if (iregion == -1) error->all("Region union region ID does not exist");
list[nregion++] = iregion;
}
// extent of union of regions
Region **regions = domain->regions;
extent_xlo = extent_ylo = extent_zlo = BIG;
extent_xhi = extent_yhi = extent_zhi = -BIG;
for (int ilist = 0; ilist < nregion; ilist++) {
extent_xlo = MIN(extent_xlo,regions[list[ilist]]->extent_xlo);
extent_ylo = MIN(extent_ylo,regions[list[ilist]]->extent_ylo);
extent_zlo = MIN(extent_zlo,regions[list[ilist]]->extent_zlo);
extent_xhi = MAX(extent_xhi,regions[list[ilist]]->extent_xhi);
extent_yhi = MAX(extent_yhi,regions[list[ilist]]->extent_yhi);
extent_zhi = MAX(extent_zhi,regions[list[ilist]]->extent_zhi);
}
}
/* ---------------------------------------------------------------------- */
RegUnion::~RegUnion()
{
delete [] list;
}
/* ---------------------------------------------------------------------- */
int RegUnion::match(double x, double y, double z)
{
int ilist;
Region **regions = domain->regions;
for (ilist = 0; ilist < nregion; ilist++)
if (regions[list[ilist]]->match(x,y,z)) break;
int inside; // inside if matched any region
if (ilist == nregion) inside = 0;
else inside = 1;
return !(inside ^ interior); // 1 if same, 0 if different
}
c4science · Help