00001 // This file is part of ff3d - http://www.freefem.org/ff3d 00002 // Copyright (C) 2001, 2002, 2003 Stéphane Del Pino 00003 00004 // This program is free software; you can redistribute it and/or modify 00005 // it under the terms of the GNU General Public License as published by 00006 // the Free Software Foundation; either version 2, or (at your option) 00007 // any later version. 00008 00009 // This program is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 // GNU General Public License for more details. 00013 00014 // You should have received a copy of the GNU General Public License 00015 // along with this program; if not, write to the Free Software Foundation, 00016 // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00017 00018 // $Id: ScalarFunctionDifference.hpp,v 1.3 2006/10/28 12:26:54 delpinux Exp $ 00019 00020 #ifndef SCALAR_FUNCTION_DIFFERENCE_HPP 00021 #define SCALAR_FUNCTION_DIFFERENCE_HPP 00022 00023 #include <ScalarFunctionBase.hpp> 00024 00033 class ScalarFunctionDifference 00034 : public ScalarFunctionBase 00035 { 00036 private: 00037 ConstReferenceCounting<ScalarFunctionBase> 00038 __f; 00039 ConstReferenceCounting<ScalarFunctionBase> 00040 __g; 00049 std::ostream& __put(std::ostream& os) const 00050 { 00051 os << '(' << *__f << '-' << *__g << ')'; 00052 return os; 00053 } 00054 00055 public: 00061 real_t operator()(const TinyVector<3,real_t>& X) const 00062 { 00063 return (*__f)(X)-(*__g)(X); 00064 } 00065 00071 bool canBeSimplified() const 00072 { 00073 return false; 00074 } 00075 00082 ScalarFunctionDifference(ConstReferenceCounting<ScalarFunctionBase> f, 00083 ConstReferenceCounting<ScalarFunctionBase> g) 00084 : ScalarFunctionBase(ScalarFunctionBase::difference), 00085 __f(f), 00086 __g(g) 00087 { 00088 ; 00089 } 00090 00096 ScalarFunctionDifference(const ScalarFunctionDifference& f) 00097 : ScalarFunctionBase(f), 00098 __f(f.__f), 00099 __g(f.__g) 00100 { 00101 ; 00102 } 00103 00108 ~ScalarFunctionDifference() 00109 { 00110 ; 00111 } 00112 }; 00113 00114 #endif // SCALAR_FUNCTION_DIFFERENCE_HPP
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