BC.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 BC_H
#define BC_H
 
#include "Constraint.h"
 
class PenaltyBC : public Constraint {
    static double multiplier;
 
    friend void set_constraint_multiplier(double);
 
public:
    PenaltyBC(
        unsigned,
        uvec&&,                  // node tags
        std::vector<Node::DOF>&& // dof components
    );
 
    int initialize(const shared_ptr<DomainBase>&) override;
 
    int process(const shared_ptr<DomainBase>&) override;
    int process_resistance(const shared_ptr<DomainBase>&) final;
};
 
class MultiplierBC : public PenaltyBC {
public:
    using PenaltyBC::PenaltyBC;
 
    int process(const shared_ptr<DomainBase>&) override;
};
 
class GroupPenaltyBC : protected GroupModifier, public MultiplierBC {
public:
    GroupPenaltyBC(
        unsigned,
        uvec&&,                  // node group tags
        std::vector<Node::DOF>&& // dof components
    );
 
    int initialize(const shared_ptr<DomainBase>&) override;
 
    int process(const shared_ptr<DomainBase>&) override;
};
 
class GroupMultiplierBC final : public GroupPenaltyBC {
public:
    using GroupPenaltyBC::GroupPenaltyBC;
 
    int process(const shared_ptr<DomainBase>&) override;
};
 
void set_constraint_multiplier(double);
 
#endif