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cache.h

00001 // cache.h
00002 //
00003 // Copyright (C) 2003, 2004 Jason Bevins
00004 //
00005 // This library is free software; you can redistribute it and/or modify it
00006 // under the terms of the GNU Lesser General Public License as published by
00007 // the Free Software Foundation; either version 2.1 of the License, or (at
00008 // your option) any later version.
00009 //
00010 // This library is distributed in the hope that it will be useful, but WITHOUT
00011 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00012 // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
00013 // License (COPYING.txt) for more details.
00014 //
00015 // You should have received a copy of the GNU Lesser General Public License
00016 // along with this library; if not, write to the Free Software Foundation,
00017 // Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00018 //
00019 // The developer's email is jlbezigvins@gmzigail.com (for great email, take
00020 // off every 'zig'.)
00021 //
00022 
00023 #ifndef NOISE_MODULE_CACHE_H
00024 #define NOISE_MODULE_CACHE_H
00025 
00026 #include "modulebase.h"
00027 
00028 namespace noise
00029 {
00030 
00031   namespace module
00032   {
00033 
00036 
00039 
00043 
00067     class Cache: public Module
00068     {
00069 
00070       public:
00071 
00073         Cache ();
00074 
00075         virtual int GetSourceModuleCount () const
00076         {
00077           return 1;
00078         }
00079 
00080         virtual double GetValue (double x, double y, double z) const;
00081 
00082         virtual void SetSourceModule (int index, const Module& sourceModule)
00083         {
00084           Module::SetSourceModule (index, sourceModule);
00085           m_isCached = false;
00086         }
00087 
00088       protected:
00089 
00091         mutable double m_cachedValue;
00092 
00095         mutable double m_isCached;
00096 
00098         mutable double m_xCache;
00099 
00101         mutable double m_yCache;
00102 
00104         mutable double m_zCache;
00105 
00106     };
00107 
00109 
00111 
00113 
00114   }
00115 
00116 }
00117 
00118 #endif