/*******************************************************************************
 * 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/>.
 ******************************************************************************/
/**
 * @class ElementTemplate
 * @brief The ElementTemplate class illustrates the basic formulation a typical
 * Element class used in FEM analysis.
 *
 * @author tlc
 * @date 05/01/2020
 * @version 0.1.3
 * @file ElementTemplate.h
 * @addtogroup Element
 * @{
 */

#ifndef ELEMENTTEMPLATE_H
#define ELEMENTTEMPLATE_H

#include "MaterialElement.h"

class ElementTemplate final : public MaterialElement2D {
    // As a universal practice, we define two static constants to
    // represent the number of nodes and the number of DoFs.
    // This is not necessary but only for clearness.
    static constexpr unsigned m_node = 3, m_dof = 2, m_size = m_node * m_dof;

    double thickness = 0.; /**< thickness */
    double area = 0.;      /**< area */

    mat strain_mat;

    unique_ptr<Material> m_material; /**< store material model */
public:
    ElementTemplate(unsigned, uvec&&, unsigned, double = 1.);

    int initialize(const shared_ptr<DomainBase>&) override;

    int update_status() override;

    int commit_status() override;
    int clear_status() override;
    int reset_status() override;
};

#endif

//! @}
