heavisidetimefunction.C

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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
 */
 
#include "heavisidetimefunction.h"
#include "dynamicinputrecord.h"
#include "classfactory.h"
 
namespace oofem {
REGISTER_Function(HeavisideTimeFunction);
 
double
HeavisideTimeFunction :: evaluateAtTime(double time)
{
    double relTime = time - this->origin;
    if ( relTime <= 0. ) {
        return 0.;
    }
 
    return value;
}
 
 
void
HeavisideTimeFunction :: initializeFrom(InputRecord &ir)
{
    Function :: initializeFrom(ir);
 
    IR_GIVE_FIELD(ir, origin, _IFT_HeavisideTimeFunction_origin);
    IR_GIVE_FIELD(ir, value, _IFT_HeavisideTimeFunction_value);
}
 
 
void HeavisideTimeFunction :: giveInputRecord(DynamicInputRecord &input)
{
    Function :: giveInputRecord(input);
    input.setField(this->origin, _IFT_HeavisideTimeFunction_origin);
    input.setField(this->value, _IFT_HeavisideTimeFunction_value);
}
} // end namespace oofem