OgreController.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2005 The OGRE Team
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.
-----------------------------------------------------------------------------
*/
#ifndef __Controller_H__
#define __Controller_H__

#include "OgrePrerequisites.h"

#include "OgreSharedPtr.h"

namespace Ogre {


    
    
    template <typename T>
    class ControllerFunction
    {
    protected:
        bool mDeltaInput;
        T mDeltaCount;

        T getAdjustedInput(T input)
        {
            if (mDeltaInput)
            {
                mDeltaCount += input;
                // Wrap
                while (mDeltaCount >= 1.0)
                    mDeltaCount -= 1.0;
                while (mDeltaCount < 0.0)
                    mDeltaCount += 1.0;

                return mDeltaCount;
            }
            else
            {
                return input;
            }
        }

    public:
        ControllerFunction(bool deltaInput)
        {
            mDeltaInput = deltaInput;
            mDeltaCount = 0;
        }

        virtual ~ControllerFunction() {}

        virtual T calculate(T sourceValue) = 0;
    };


    template <typename T>
    class ControllerValue
    {

    public:
        virtual ~ControllerValue() { }
        virtual T getValue(void) const = 0;
        virtual void setValue(T value) = 0;

    };

    template <typename T>
    class Controller
    {
    protected:
        SharedPtr< ControllerValue<T> > mSource;
        SharedPtr< ControllerValue<T> > mDest;
        SharedPtr< ControllerFunction<T> > mFunc;
        bool mEnabled;


    public:

        Controller(const SharedPtr< ControllerValue<T> >& src, 
            const SharedPtr< ControllerValue<T> >& dest, const SharedPtr< ControllerFunction<T> >& func)
            : mSource(src), mDest(dest), mFunc(func)
        {
            mEnabled = true;
        }

        virtual ~Controller() {}


        void setSource(const SharedPtr< ControllerValue<T> >& src)
        {
            mSource = src;
        }
        const SharedPtr< ControllerValue<T> >& getSource(void) const
        {
            return mSource;
        }
        void setDestination(const SharedPtr< ControllerValue<T> >& dest)
        {
            mDest = dest;
        }

        const SharedPtr< ControllerValue<T> >& getDestination(void) const
        {
            return mDest;
        }

        bool getEnabled(void) const
        {
            return mEnabled;
        }

        void setEnabled(bool enabled)
        {
            mEnabled = enabled;
        }

        void setFunction(const SharedPtr< ControllerFunction<T> >& func)
        {
            mFunc = func;
        }

        const SharedPtr< ControllerFunction<T> >& getFunction(void) const
        {
            return mFunc;
        }

        void update(void)
        {
            if(mEnabled)
                mDest->setValue(mFunc->calculate(mSource->getValue()));
        }

    };


}

#endif

---

Copyright © 2000-2005 by The OGRE Team

This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sun Mar 12 14:37:39 2006