biasgain.h

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// $Id: biasgain.h 751 2006-03-31 15:43:49Z alex $
//------------------------------------------------
//  CProfileBiasGain.h
//------------------------------------------------
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
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 */




#ifndef  Include_CProfileBiasGain
#define  Include_CProfileBiasGain




#include "iprofile.h"













class CProfileBiasGain  :  public IProfile
{

public: 


                                CProfileBiasGain ();
                                CProfileBiasGain ( AFp BiasMinus1ToPlus1,  AFp GainMinus1ToPlus1 );

                                ~CProfileBiasGain ();
                                CProfileBiasGain ( const CProfileBiasGain& );
            CProfileBiasGain&   operator= ( const CProfileBiasGain& );




    virtual void        SetBiasGain ( AFp BiasMinus1ToPlus1,  AFp GainMinus1ToPlus1 );
    virtual void        SetBias ( AFp BiasMinus1ToPlus1 );
    virtual void        SetGain ( AFp GainMinus1ToPlus1 );

    virtual AFp         GetBias ()                                                          const;
    virtual AFp         GetGain ()                                                          const;


    virtual AFp         MapZeroToOne ( AFp ZeroToOne )                                      const;

    virtual void        SetIntervals ( AFp Low,  AFp High );
    virtual void        SetIntervals ( AFp DomainLow,  AFp DomainHigh,  AFp RangeLow,  AFp RangeHigh );

    virtual AFp         MapInterval ( AFp )                                                 const;
    virtual void        MapInterval ( AFp Table[],  INT32 length )                          const;

    virtual bool        operator== ( const CProfileBiasGain& )                              const;

    void SetGeneratesInfiniteUndo (BOOL newVal) { generatesInfiniteUndo = newVal; }
    BOOL GetGeneratesInfiniteUndo () const { return (generatesInfiniteUndo); }

    void SetIsAFeatherProfile (BOOL newVal) { isAFeatherProfile = newVal; }
    BOOL GetIsAFeatherProfile () { return (isAFeatherProfile); }


protected: 

    static  AFp         ConvertIntervalMinus1Plus1ToZeroOne ( AFp );
            AFp         ScaleDomainToZeroOne ( AFp )                                        const;
            AFp         ScaleZeroOneToRange  ( AFp )                                        const;

    static  AFp         BiasGain ( AFp BiasAmount,  AFp GainAmount,  AFp Input );
    inline static   AFp         Bias ( AFp BiasAmount,  AFp Input );
    inline static   AFp         Gain ( AFp GainAmount,  AFp Input );    


private: 

            void        SetDefaultIntervals ();


            AFp         BiasMinus1ToPlus1_m;
            AFp         GainMinus1ToPlus1_m;
            AFp         Bias_m;
            AFp         Gain_m;

            AFp         DomainLow_m;
            AFp         DomainLength_m;
            AFp         RangeLow_m;
            AFp         RangeLength_m;

    static const AFp    kSmallAmount_s;

    
    BOOL generatesInfiniteUndo;         // DO NOT SET THIS VALUE YOURSELF !!!!

    BOOL isAFeatherProfile;             // CGS:  we need to do some special processing for profiles that are
                                        // used with feathering.
};








#endif//Include_CProfileBiasGain

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