field.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 field_h
#define field_h
 
#include "domain.h"
#include "oofemenv.h"
#include "valuemodetype.h"
#include "contextioresulttype.h"
#include "contextmode.h"
#include "enumitem.h"
#include "intarray.h"
#include <string>
#include <memory>
 
namespace oofem {
#define FieldType_DEF \
    ENUM_ITEM_WITH_VALUE(FT_Unknown, 0) \
    ENUM_ITEM_WITH_VALUE(FT_Velocity, 1) \
    ENUM_ITEM_WITH_VALUE(FT_Displacements, 2) \
    ENUM_ITEM_WITH_VALUE(FT_VelocityPressure, 3) \
    ENUM_ITEM_WITH_VALUE(FT_Pressure, 4) \
    ENUM_ITEM_WITH_VALUE(FT_Temperature, 5) \
    ENUM_ITEM_WITH_VALUE(FT_HumidityConcentration, 6) \
    ENUM_ITEM_WITH_VALUE(FT_TransportProblemUnknowns, 7) \
    ENUM_ITEM_WITH_VALUE(FT_TemperatureAmbient, 8) \
    ENUM_ITEM_WITH_VALUE(FT_EigenStrain, 9) \
    ENUM_ITEM_WITH_VALUE(FT_VOF, 10)

enum FieldType {
    FieldType_DEF
};
#undef ENUM_ITEM
#undef ENUM_ITEM_WITH_VALUE
#undef enumitem_h
 
class TimeStep;
class FloatArray;
class DofManager;
class DataStream;
class InputRecord;
 
class Field;
typedef std::shared_ptr<Field> FieldPtr;

class OOFEM_EXPORT Field
{
protected:
    FieldType type;
    IntArray regionSets;
 
public:
    Field(FieldType b = FieldType::FT_Unknown) : type(b) { regionSets.resize(0); }
    virtual ~Field() { }
    virtual int evaluateAt(FloatArray &answer, const FloatArray &coords,
                           ValueModeType mode, TimeStep *tStep) = 0;

    virtual int evaluateAt(FloatArray &answer, DofManager *dman,
                           ValueModeType mode, TimeStep *tStep) = 0;
    virtual int evaluateAt(FloatArray &answer, Element *elem,
                           ValueModeType mode, TimeStep *tStep) { return 1; } 

    FieldType giveType() { return type; }
    
    void setType(FieldType b) { type=b; }

    void setSetsNumbers (const IntArray sets);

    virtual bool hasElementInSets(int nElem, Domain *d);
    virtual void saveContext(DataStream &stream) = 0;
    virtual void restoreContext(DataStream &stream) = 0;
 

    std :: string errorInfo(const char *func) const;

    virtual const char *giveClassName() const = 0;
 
    // for Field classes supporting instantiation from input record
    virtual void initializeFrom(InputRecord &ir) { };
};
} // end namespace oofem
#endif // field_h