ESPResSo
Extensible Simulation Package for Research on Soft Matter Systems
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core/constraints/ExternalPotential.hpp
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1/*
2 * Copyright (C) 2010-2022 The ESPResSo project
3 *
4 * This file is part of ESPResSo.
5 *
6 * ESPResSo is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * ESPResSo is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20#pragma once
21
22#include "Constraint.hpp"
23#include "Particle.hpp"
25
26namespace Constraints {
27/**
28 * @brief Constraint interface for ExternalField::PotentialField.
29 */
30template <typename Coupling, typename Field>
33
34public:
35 template <typename... Args>
36 ExternalPotential(Args &&...args) : impl(std::forward<Args>(args)...) {}
37
38 const Coupling &coupling() const { return impl.coupling(); }
39 const Field &field() const { return impl.field(); }
40
41 void add_energy(const Particle &p, const Utils::Vector3d &folded_pos,
42 double time, Observable_stat &obs_energy) const override {
43 obs_energy.external_fields[0] += impl.energy(p, folded_pos, time);
44 }
45
46 ParticleForce force(const Particle &p, const Utils::Vector3d &folded_pos,
47 double time) override {
48 return impl.force(p, folded_pos, time);
49 }
50
51 bool fits_in_box(Utils::Vector3d const &box) const override {
52 return impl.field().fits_in_box(box);
53 }
54};
55} // namespace Constraints
Constraint interface for ExternalField::PotentialField.
ParticleForce force(const Particle &p, const Utils::Vector3d &folded_pos, double time) override
bool fits_in_box(Utils::Vector3d const &box) const override
void add_energy(const Particle &p, const Utils::Vector3d &folded_pos, double time, Observable_stat &obs_energy) const override
double energy(const Particle &p, const Utils::Vector3d &folded_pos, double t) const
Utils::Vector3d force(const Particle &p, const Utils::Vector3d &folded_pos, double t) const
Observable for the pressure and energy.
std::span< double > external_fields
Contribution from external fields (accumulated).
Force information on a particle.
Definition Particle.hpp:290
Struct holding all information for one particle.
Definition Particle.hpp:395