/* ----------------------------------------------------------------------
    This is the

    ██╗     ██╗ ██████╗  ██████╗  ██████╗ ██╗  ██╗████████╗███████╗
    ██║     ██║██╔════╝ ██╔════╝ ██╔════╝ ██║  ██║╚══██╔══╝██╔════╝
    ██║     ██║██║  ███╗██║  ███╗██║  ███╗███████║   ██║   ███████╗
    ██║     ██║██║   ██║██║   ██║██║   ██║██╔══██║   ██║   ╚════██║
    ███████╗██║╚██████╔╝╚██████╔╝╚██████╔╝██║  ██║   ██║   ███████║
    ╚══════╝╚═╝ ╚═════╝  ╚═════╝  ╚═════╝ ╚═╝  ╚═╝   ╚═╝   ╚══════╝®

    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 no contributing author is listed, this file has been contributed
    by the core developer)

    Copyright 2014-     DCS Computing GmbH, Linz
------------------------------------------------------------------------- */

#ifdef COMPUTE_CLASS

ComputeStyle(surface,ComputeSurface)

#else

#ifndef LMP_COMPUTE_SURFACE_H
#define LMP_COMPUTE_SURFACE_H

#include "compute.h"

namespace LAMMPS_NS {

class ComputeSurface : public Compute
{

public:

    ComputeSurface(class LAMMPS *, int &iarg, int, char **);
    ~ComputeSurface();
    void init();
    void init_list(int, class NeighList *);
    double compute_scalar();
    void compute_peratom();
    int pack_reverse_comm(int, int, double *);
    void unpack_reverse_comm(int, int *, double *);
    double memory_usage();

protected:

    int nmax_;
    int iregion_;
    class NeighList *list_;

    double *is_on_surface_;

    double point_up_[3];
    double n_vec_up_[3];
    bool use_com_;
    double angle_;
    double cosine_sqr_;
};

}

#endif
#endif