# 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