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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: VariationalOperatorAlphaUV.hpp,v 1.6 2007/06/10 15:03:32 delpinux Exp $
#ifndef VARIATIONAL_OPERATOR_ALPHA_U_V_HPP
#define VARIATIONAL_OPERATOR_ALPHA_U_V_HPP
#include <VariationalBilinearOperator.hpp>
#include <ScalarFunctionBuilder.hpp>
#include <ScalarFunctionBase.hpp>
/**
* @file VariationalOperatorAlphaUV.hpp
* @author Stephane Del Pino
* @date Thu Jul 20 12:12:23 2006
*
* @brief describes term @f$ \int \alpha uv @f$
*
*/
class VariationalAlphaUVOperator
: public VariationalBilinearOperator
{
private:
ConstReferenceCounting<ScalarFunctionBase>
__Alpha; /**< mass term \f$\alpha\f$ */
public:
/**
* Access to \f$\alpha\f$
*
* @return __Alpha
*/
ConstReferenceCounting<ScalarFunctionBase> alpha() const
{
return __Alpha;
}
/**
* "multiplies" the operator by a coefficient
*
* @param c the given coefficient
*
* @return @f$ \int c\alpha uv @f$
*/
ReferenceCounting<VariationalBilinearOperator>
operator*(const ConstReferenceCounting<ScalarFunctionBase>& c) const
{
VariationalAlphaUVOperator* newOperator = new VariationalAlphaUVOperator(*this);
ScalarFunctionBuilder functionBuilder;
functionBuilder.setFunction(__Alpha);
functionBuilder.setBinaryOperation(BinaryOperation::product,c);
(*newOperator).__Alpha = functionBuilder.getBuiltFunction();
return newOperator;
}
/**
* Constructor
*
* @param unknownNumber unknown number
* @param unknownProperty unknown property
* @param testFunctionNumber test function number
* @param testFunctionProperty test function property
* @param alpha the mass coefficient
*/
VariationalAlphaUVOperator(const size_t& unknownNumber,
const VariationalOperator::Property& unknownProperty,
const size_t& testFunctionNumber,
const VariationalOperator::Property& testFunctionProperty,
ConstReferenceCounting<ScalarFunctionBase> alpha)
: VariationalBilinearOperator(VariationalBilinearOperator::alphaUV,
unknownNumber, unknownProperty,
testFunctionNumber, testFunctionProperty),
__Alpha(alpha)
{
;
}
/**
* Copy constructor
*
* @param V a given operator
*/
VariationalAlphaUVOperator(const VariationalAlphaUVOperator& V)
: VariationalBilinearOperator(V),
__Alpha(V.__Alpha)
{
;
}
/**
* Destructor
*
*/
~VariationalAlphaUVOperator()
{
;
}
};
#endif // VARIATIONAL_OPERATOR_ALPHA_U_V_HPP
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