contactelement.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 contactelement_h
#define contactelement_h
 
#include "domain.h"
#include "floatarray.h"
#include "floatmatrix.h"
#include "feinterpol.h"
#include "element.h"
#include "aabb.h"
 
namespace oofem {

  class OOFEM_EXPORT ContactElement : public Element
{
protected:
 public:
     ContactElement(int n, Domain * aDomain);
    virtual ~ContactElement();
    virtual void computeNmatrixAt(const FloatArray &iLocCoord, FloatMatrix &answer) = 0;
    virtual FloatArray computeNormalVectorAt(const FloatArray &lCoords) = 0;
    void giveCharacteristicMatrix(FloatMatrix &answer, CharType mtrx, TimeStep *tStep) override
      
    {answer.clear();}
    void giveCharacteristicVector(FloatArray &answer, CharType type, ValueModeType mode, TimeStep *tStep) override {answer.clear();} 
 
    void updateYourself(TimeStep *tStep) override{;}
    void printOutputAt(FILE *file, TimeStep *tStep) override{;}
 
    
    virtual AABB computeAABB();
};
 
 
 
} // end namespace oofem
#endif //contactelement_h