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/**************************************************************************/
/* Copyright 2012 Tim Day */
/* */
/* This file is part of Evolvotron */
/* */
/* Evolvotron 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 3 of the License, or */
/* (at your option) any later version. */
/* */
/* Evolvotron 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 Evolvotron. If not, see <http://www.gnu.org/licenses/>. */
/**************************************************************************/
/*! \file
\brief Interfaces and implementation for specific Function class.
*/
#ifndef _function_constant_h_
#define _function_constant_h_
#include "useful.h"
#include "function_boilerplate.h"
//------------------------------------------------------------------------------------------
//! Function class representing a constant value.
FUNCTION_BEGIN(FunctionConstant,3,0,false,FnCore)
//! Returns the constant value
virtual const XYZ evaluate(const XYZ&) const
{
return XYZ(param(0),param(1),param(2));
}
//! Returns true, obviously.
/*! One of the few cases this method is overriden; most (all?) other no-argument functions should return false
*/
virtual bool is_constant() const
{
return true;
}
FUNCTION_END(FunctionConstant)
//------------------------------------------------------------------------------------------
#endif
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