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lammps/src/region_prism.h
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region_prism.h
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/* -*- c++ -*- ----------------------------------------------------------
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.
------------------------------------------------------------------------- */
#ifdef REGION_CLASS
RegionStyle(prism,RegPrism)
#else
#ifndef LMP_REGION_PRISM_H
#define LMP_REGION_PRISM_H
#include "region.h"
namespace LAMMPS_NS {
class RegPrism : public Region {
friend class CreateBox;
public:
RegPrism(class LAMMPS *, int, char **);
~RegPrism();
int inside(double, double, double);
int surface_interior(double *, double);
int surface_exterior(double *, double);
private:
double xlo,xhi,ylo,yhi,zlo,zhi;
double xy,xz,yz;
double h[3][3],hinv[3][3];
int dimension;
double a[3],b[3],c[3]; // edge vectors of region
double clo[3],chi[3]; // opposite corners of prism
double face[6][3]; // unit normals of 6 prism faces
double corners[8][3]; // 8 corner pts of prism
int tri[12][3]; // 3 corner pts of 12 triangles (2 per face)
void find_nearest(double *, double &, double &, double &);
int inside_tri(double *, double *, double *, double *, double *);
void point_on_line_segment(double *, double *, double *, double *);
double closest(double *, double *, double *, double);
void subtract(double *, double *, double *);
void cross(double *, double *, double *);
double dotproduct(double *, double *);
void normalize(double *);
};
}
#endif
#endif
/* ERROR/WARNING messages:
E: Cannot use region INF or EDGE when box does not exist
Regions that extend to the box boundaries can only be used after the
create_box command has been used.
E: Illegal ... command
Self-explanatory. Check the input script syntax and compare to the
documentation for the command. You can use -echo screen as a
command-line option when running LAMMPS to see the offending line.
*/
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