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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: FunctionExpressionIntegrate.hpp,v 1.2 2006/07/23 22:17:07 delpinux Exp $
#ifndef FUNCTION_EXPRESSION_INTEGRATE_HPP
#define FUNCTION_EXPRESSION_INTEGRATE_HPP
#include <FunctionExpression.hpp>
/**
* @file FunctionExpressionIntegrate.hpp
* @author Stephane Del Pino
* @date Tue Jul 18 00:01:26 2006
*
* @brief This class describes expressions of function integration in
* a given direction @f$ \int_a^b f dx_i @f$
*
*/
class FunctionExpressionIntegrate
: public FunctionExpression
{
public:
enum Direction {
x,
y,
z
};
private:
ReferenceCounting<FunctionExpression>
__lowerBound; /**< lower bound of integration @f$ a @f$ */
ReferenceCounting<FunctionExpression>
__upperBound; /**< upper bound of integration @f$ b @f$ */
ReferenceCounting<FunctionExpression>
__integratedFunction; /**< expression to integrate */
Direction __direction; /**< Direction of integration */
public:
/**
* Executes the expression
*
*/
void execute();
/**
* Construtor
*
* @param lowerBound lower bound of integration @f$ a @f$
* @param upperBound upper bound of integration @f$ b @f$
* @param integratedFunction function to integrate @f$ f @f$
* @param directionName name of the direction of integration
*/
FunctionExpressionIntegrate(ReferenceCounting<FunctionExpression> lowerBound,
ReferenceCounting<FunctionExpression> upperBound,
ReferenceCounting<FunctionExpression> integratedFunction,
const std::string& directionName);
/**
* Copy constructor
*
* @param f original expression
*/
FunctionExpressionIntegrate(const FunctionExpressionIntegrate& f);
/**
* Destructor
*
*/
~FunctionExpressionIntegrate();
};
#endif // FUNCTION_EXPRESSION_INTEGRATE_HPP
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