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OgreController.h

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00001 /*
00002 -----------------------------------------------------------------------------
00003 This source file is part of OGRE
00004     (Object-oriented Graphics Rendering Engine)
00005 For the latest info, see http://www.ogre3d.org/
00006 
00007 Copyright (c) 2000-2005 The OGRE Team
00008 Also see acknowledgements in Readme.html
00009 
00010 This program is free software; you can redistribute it and/or modify it under
00011 the terms of the GNU Lesser General Public License as published by the Free Software
00012 Foundation; either version 2 of the License, or (at your option) any later
00013 version.
00014 
00015 This program is distributed in the hope that it will be useful, but WITHOUT
00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
00018 
00019 You should have received a copy of the GNU Lesser General Public License along with
00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
00022 http://www.gnu.org/copyleft/lesser.txt.
00023 -----------------------------------------------------------------------------
00024 */
00025 #ifndef __Controller_H__
00026 #define __Controller_H__
00027 
00028 #include "OgrePrerequisites.h"
00029 
00030 #include "OgreSharedPtr.h"
00031 
00032 namespace Ogre {
00033 
00034 
00035     
00036     
00046     template <typename T>
00047     class ControllerFunction
00048     {
00049     protected:
00051         bool mDeltaInput;
00052         T mDeltaCount;
00053 
00056         T getAdjustedInput(T input)
00057         {
00058             if (mDeltaInput)
00059             {
00060                 mDeltaCount += input;
00061                 // Wrap
00062                 while (mDeltaCount >= 1.0)
00063                     mDeltaCount -= 1.0;
00064                 while (mDeltaCount < 0.0)
00065                     mDeltaCount += 1.0;
00066 
00067                 return mDeltaCount;
00068             }
00069             else
00070             {
00071                 return input;
00072             }
00073         }
00074 
00075     public:
00081         ControllerFunction(bool deltaInput)
00082         {
00083             mDeltaInput = deltaInput;
00084             mDeltaCount = 0;
00085         }
00086 
00087         virtual T calculate(T sourceValue) = 0;
00088     };
00089 
00090 
00093     template <typename T>
00094     class ControllerValue
00095     {
00096 
00097     public:
00098         virtual ~ControllerValue() { }
00099         virtual T getValue(void) const = 0;
00100         virtual void setValue(T value) = 0;
00101 
00102     };
00103 
00124     template <typename T>
00125     class Controller
00126     {
00127     protected:
00129         SharedPtr< ControllerValue<T> > mSource;
00131         SharedPtr< ControllerValue<T> > mDest;
00133         SharedPtr< ControllerFunction<T> > mFunc;
00135         bool mEnabled;
00136 
00137 
00138     public:
00139 
00145         Controller(const SharedPtr< ControllerValue<T> >& src, 
00146             const SharedPtr< ControllerValue<T> >& dest, const SharedPtr< ControllerFunction<T> >& func)
00147             : mSource(src), mDest(dest), mFunc(func)
00148         {
00149             mEnabled = true;
00150         }
00151 
00154         virtual ~Controller() {}
00155 
00156 
00158         void setSource(const SharedPtr< ControllerValue<T> >& src)
00159         {
00160             mSource = src;
00161         }
00163         const SharedPtr< ControllerValue<T> >& getSource(void) const
00164         {
00165             return mSource;
00166         }
00168         void setDestination(const SharedPtr< ControllerValue<T> >& dest)
00169         {
00170             mDest = dest;
00171         }
00172 
00174         const SharedPtr< ControllerValue<T> >& getDestination(void) const
00175         {
00176             return mDest;
00177         }
00178 
00180         bool getEnabled(void) const
00181         {
00182             return mEnabled;
00183         }
00184 
00186         void setEnabled(bool enabled)
00187         {
00188             mEnabled = enabled;
00189         }
00190 
00193         void setFunction(const SharedPtr< ControllerFunction<T> >& func)
00194         {
00195             mFunc = func;
00196         }
00197 
00200         const SharedPtr< ControllerFunction<T> >& getFunction(void) const
00201         {
00202             return mFunc;
00203         }
00204 
00210         void update(void)
00211         {
00212             if(mEnabled)
00213                 mDest->setValue(mFunc->calculate(mSource->getValue()));
00214         }
00215 
00216     };
00217 
00218 
00219 }
00220 
00221 #endif

Copyright © 2000-2005 by The OGRE Team
Last modified Sun Nov 20 12:35:57 2005