prescribedgradient.h

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/*
 *
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 *               ##   ##  ##   ##  ##      ##      ## ### ##
 *              ##   ##  ##   ##  ####    ####    ##  #  ##
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 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2025   Borek Patzak
 *
 *
 *
 *       Czech Technical University, Faculty of Civil Engineering,
 *   Department of Structural Mechanics, 166 29 Prague, Czech Republic
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
#ifndef prescribedgradient_h
#define prescribedgradient_h
 
#include "prescribedgradienthomogenization.h"
#include "boundarycondition.h"
#include "dof.h"
#include "bctype.h"
#include "valuemodetype.h"
#include "floatarray.h"
#include "floatmatrix.h"


#define _IFT_PrescribedGradient_Name "prescribedgradient"
 
namespace oofem {
class OOFEM_EXPORT PrescribedGradient : public BoundaryCondition, public PrescribedGradientHomogenization
{
public:
    PrescribedGradient(int n, Domain *d) : BoundaryCondition(n, d) { }

    virtual ~PrescribedGradient() { }
 
    double give(Dof *dof, ValueModeType mode, double time) override;
 
    bcType giveType() const override { return DirichletBT; }

    void initializeFrom(InputRecord &ir) override;
    void giveInputRecord(DynamicInputRecord &input) override;

    virtual void updateCoefficientMatrix(FloatMatrix &C);

    void computeField(FloatArray &sigma, TimeStep *tStep) override;

    void computeTangent(FloatMatrix &tangent, TimeStep *tStep) override;
 
    void scale(double s) override { mGradient.times(s); }
 
    const char *giveClassName() const override { return "PrescribedGradient"; }
    const char *giveInputRecordName() const override { return _IFT_PrescribedGradient_Name; }
};
} // end namespace oofem
 
#endif // prescribedgradient_h