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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 ~ControllerFunction() {}
00088 
00089         virtual T calculate(T sourceValue) = 0;
00090     };
00091 
00092 
00095     template <typename T>
00096     class ControllerValue
00097     {
00098 
00099     public:
00100         virtual ~ControllerValue() { }
00101         virtual T getValue(void) const = 0;
00102         virtual void setValue(T value) = 0;
00103 
00104     };
00105 
00126     template <typename T>
00127     class Controller
00128     {
00129     protected:
00131         SharedPtr< ControllerValue<T> > mSource;
00133         SharedPtr< ControllerValue<T> > mDest;
00135         SharedPtr< ControllerFunction<T> > mFunc;
00137         bool mEnabled;
00138 
00139 
00140     public:
00141 
00147         Controller(const SharedPtr< ControllerValue<T> >& src, 
00148             const SharedPtr< ControllerValue<T> >& dest, const SharedPtr< ControllerFunction<T> >& func)
00149             : mSource(src), mDest(dest), mFunc(func)
00150         {
00151             mEnabled = true;
00152         }
00153 
00156         virtual ~Controller() {}
00157 
00158 
00160         void setSource(const SharedPtr< ControllerValue<T> >& src)
00161         {
00162             mSource = src;
00163         }
00165         const SharedPtr< ControllerValue<T> >& getSource(void) const
00166         {
00167             return mSource;
00168         }
00170         void setDestination(const SharedPtr< ControllerValue<T> >& dest)
00171         {
00172             mDest = dest;
00173         }
00174 
00176         const SharedPtr< ControllerValue<T> >& getDestination(void) const
00177         {
00178             return mDest;
00179         }
00180 
00182         bool getEnabled(void) const
00183         {
00184             return mEnabled;
00185         }
00186 
00188         void setEnabled(bool enabled)
00189         {
00190             mEnabled = enabled;
00191         }
00192 
00195         void setFunction(const SharedPtr< ControllerFunction<T> >& func)
00196         {
00197             mFunc = func;
00198         }
00199 
00202         const SharedPtr< ControllerFunction<T> >& getFunction(void) const
00203         {
00204             return mFunc;
00205         }
00206 
00212         void update(void)
00213         {
00214             if(mEnabled)
00215                 mDest->setValue(mFunc->calculate(mSource->getValue()));
00216         }
00217 
00218     };
00219 
00220 
00221 }
00222 
00223 #endif

Copyright © 2000-2005 by The OGRE Team
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sun Mar 12 14:37:39 2006