ParticleCollision3D.h

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/*******************************************************************************
 * Copyright (C) 2017-2026 Theodore Chang
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
#ifndef PARTICLECOLLISION3D_H
#define PARTICLECOLLISION3D_H
 
#include "ParticleCollision.h"
 
class ParticleCollision3D final : public ParticleCollision {
    struct CellList {
        int x = 0, y = 0, z = 0;
        unsigned tag = 0;
 
        CellList(const int in_x, const int in_y, const int in_z, const unsigned in_tag)
            : x(in_x)
            , y(in_y)
            , z(in_z)
            , tag(in_tag) {}
    };
 
    const double space = 1.;
    const double alpha = 1.;
 
    [[nodiscard]] double compute_f(double) const override;
    [[nodiscard]] double compute_df(double) const override;
 
    int process_meta(const shared_ptr<DomainBase>&, bool) override;
 
public:
    ParticleCollision3D(unsigned, double, double);
};
 
#endif