Program Listing for File EasingBase.h

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/*
 * Easing Functions: Copyright (c) 2010 Andy Brown
 * http://www.andybrown.me.uk
 *
 * This work is licensed under a Creative Commons
 * Attribution_ShareAlike 3.0 Unported License.
 * http://creativecommons.org/licenses/by_sa/3.0/
 */

#ifndef __CD7D63F1_57BA_4f1b_A832_758091A49A7A
#define __CD7D63F1_57BA_4f1b_A832_758091A49A7A

#include "EasingConstants.h"


// base class for easing functions

class EasingBase
{
protected:
    NUMBER _change;
    NUMBER _duration;
    easingType_t _type;

public:

    // default constructor
    EasingBase();

    EasingBase(easingType_t type_);

    //virtual destructor to make proper deletion possible
    virtual ~EasingBase();

    // single method to set the type for all easings
    void setType(easingType_t type_);

    // single method for all easings to execute
    NUMBER ease(NUMBER time_) const;

    // easing API methods
    virtual NUMBER easeIn(NUMBER time_) const=0;
    virtual NUMBER easeOut(NUMBER time_) const=0;
    virtual NUMBER easeInOut(NUMBER time_) const=0;

    // common properties
    void setDuration(NUMBER duration_);
    void setTotalChangeInPosition(NUMBER totalChangeInPosition_);
};


#endif