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// This file is part of ff3d - http://www.freefem.org/ff3d
// Copyright (C) 2001, 2002, 2003 Stphane Del Pino
// 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; either version 2, 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 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.
// $Id: P0Triangle3DFiniteElement.hpp,v 1.1 2006/11/11 17:37:40 delpinux Exp $
#ifndef P0_TRIANGLE3D_FINITE_ELEMENT_HPP
#define P0_TRIANGLE3D_FINITE_ELEMENT_HPP
#include <TinyVector.hpp>
#include <TinyMatrix.hpp>
#include <QuadratureFormula.hpp>
#include <ConformTransformation.hpp>
#include <LagrangianFiniteElement.hpp>
#include <ThreadStaticBase.hpp>
class P0Triangle3DFiniteElement
: public ThreadStaticBase<P0Triangle3DFiniteElement>,
public LagrangianFiniteElement<1, P0Triangle3DFiniteElement,
QuadratureFormulaP0Triangle3D>
{
private:
static TinyVector<3, real_t> __massCenter; /**< mass center of the reference element */
public:
enum {
numberOfDegreesOfFreedom = 1,
numberOfVertexDegreesOfFreedom = 0,
numberOfEdgeDegreesOfFreedom = 0,
numberOfFaceDegreesOfFreedom = 0,
numberOfVolumeDegreesOfFreedom = 1
};
/**
* returns the mass center of the reference element
*
* @return __massCenter
*/
static const TinyVector<3, real_t>& massCenter()
{
return __massCenter;
}
real_t W (const size_t& i, const TinyVector<3>& X) const;
real_t dxW(const size_t& i, const TinyVector<3>& X) const;
real_t dyW(const size_t& i, const TinyVector<3>& X) const;
real_t dzW(const size_t& i, const TinyVector<3>& X) const;
inline const
TinyVector<QuadratureType::numberOfQuadraturePoints,
TinyVector<3> >&
integrationVertices() const
{
return QuadratureType::instance().vertices();
}
P0Triangle3DFiniteElement()
{
;
}
~P0Triangle3DFiniteElement()
{
;
}
};
#endif // P0_TRIANGLE3D_FINITE_ELEMENT_HPP
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