An Object Finite Element Library

Triang6S.h

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/*==============================================================================

                                    O  F  E  L  I

                           Object  Finite  Element  Library

  ==============================================================================

   Copyright (C) 1998 - 2008 Rachid Touzani

   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; Version 2 of the License.

   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, write to the :

   Free Software Foundation
   Inc., 59 Temple Place - Suite 330
   Boston, MA  02111-1307, USA

  ==============================================================================

                           Prototypes for class 'Triang6S'
                    (Shape functions for 6-node straight triangle)

  ==============================================================================*/


#ifndef __TRIANG6S_H
#define __TRIANG6S_H

#include "OFELI_Config.h"
#include "FEShape.h"

namespace OFELI {

#ifndef DOXYGEN_SHOULD_SKIP_THIS
struct ErrorInTriang6S {
   void Message(const char *file, size_t line, int code, int p1) const;
};
#endif /* DOXYGEN_SHOULD_SKIP_THIS */

class Triang6S : public FEShape
{

 public :

    Triang6S();

    Triang6S(const Element *el);

    ~Triang6S()
    {
#ifdef _OFELI_DEBUG
       std::clog << "An instance of class Triang6S is destructed.\n";
       std::clog << "File : " << __FILE__ << ", Line : " << __LINE__ << endl;
#endif
    }

    double Sh(size_t i, const Point<double> &s) const;

    Point<double> DSh(size_t i, const Point<double> &s) const;

    double getArea() { return _area=0.5*_det; }

    Point<double> getCenter() const { return _c; }

    double check() const;

 private :

   double          _area;
   Point<double>   _x21, _x31, _x32;
   const Element   *_el;
   ErrorInTriang6S _e;
};

} /* namespace OFELI */

#endif

Copyright © 1998-2007 Rachid Touzani