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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 classes.
*/
#ifndef _functions_shadow_h_
#define _functions_shadow_h_
#include "useful.h"
#include "function_boilerplate.h"
//------------------------------------------------------------------------------------------
//! Sum of two evaluations of a function, one sampled at a constant offset and weighted.
FUNCTION_BEGIN(FunctionShadow,4,1,false,0)
//! Evaluate function.
virtual const XYZ evaluate(const XYZ& p) const
{
return
arg(0)(p)+param(3)*arg(0)(p+XYZ(param(0),param(1),param(2)));
}
FUNCTION_END(FunctionShadow)
//------------------------------------------------------------------------------------------
//! Like FunctionShadow but the offset is obtained from a function.
FUNCTION_BEGIN(FunctionShadowGeneralised,1,2,false,0)
//! Evaluate function.
virtual const XYZ evaluate(const XYZ& p) const
{
return
arg(0)(p)+param(0)*arg(0)(p+arg(1)(p));
}
FUNCTION_END(FunctionShadowGeneralised)
//------------------------------------------------------------------------------------------
#endif
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