// Gradient.h : header file
#ifndef Gradient_H
#define Gradient_H

#include <QGraphicsWidget>
#include "CStringType.h"

//typedef struct myRGBTRIPLE {
//        BYTE    rgbtBlue;
//        BYTE    rgbtGreen;
//        BYTE    rgbtRed;
//} RGBTRIPLE;

typedef DWORD   COLORREF;
typedef DWORD   *LPCOLORREF;

#define RGB(r,g,b)          ((COLORREF)(((BYTE)(r)|((WORD)((BYTE)(g))<<8))|(((DWORD)(BYTE)(b))<<16)))

//#define LOBYTE(w)           ((BYTE)(((DWORD_PTR)(w)) & 0xff))

//#define GetRValue(rgb)      (LOBYTE(rgb))
//#define GetGValue(rgb)      (LOBYTE(((WORD)(rgb)) >> 8))
//#define GetBValue(rgb)      (LOBYTE((rgb)>>16))

typedef COLORREF (__cdecl* InterpolateFn)(COLORREF first, COLORREF second, float position, float start, float end);
typedef struct CPeg {
   COLORREF colour;
   float position;
} ;
enum DataType{LINEAR, LOG};
enum InterpolationMethod
    {
        Linear,
        FlatStart,
        FlatMid,
        FlatEnd,
        Cosine,
        HSLRedBlue,
        HSLBlueRed,
        HSLShortest,
        HSLLongest,
        Reverse
    };

//不滤波;3×3平均;3×3十字;N×N平均;Sobel边缘增强;Robert边缘增强;中值滤波;Laplacian边缘增强;USM;自适应滤波;保守滤波;
enum FilterMethod
{
    NONEMETHOD,    //不滤波
    MEANDEFAULT,   //3×3平均
    CROSS,
    MEANCUSTOM,
    SOBEL,
    ROBERT,
    Median,
    Laplacian,
    USM,
    Adaptive,
    Conservative
};
#define BACKGROUND -4
#define STARTPEG -3
#define ENDPEG -2
#define NONE -1
class CGradient
{
// Construction
public:
    CGradient();
    ~CGradient();
// Attributes
public:
    QVector <CPeg> pegs;
    bool m_UseBackground;
    CPeg m_StartPeg, m_EndPeg, m_Background;//ace
    int m_Quantization;
    InterpolationMethod m_InterpolationMethod;
    QString m_FileFlag;
public:
    //void MakeEntries(RGBTRIPLE *lpPal, int iEntryCount);
    void GetColorArray(COLORREF colorArr[]);
    InterpolateFn GetInterpolationProc();
    int IndexFromPos2(float pos);
    int IndexFromPos(float pos);
    void Serialize(QString strCfg);//CArchive &ar);
    COLORREF GetBackgroundColour() const {return m_Background.colour;};
        //----- Interpolation routines -----//
    static COLORREF InterpolateLinear(COLORREF first, COLORREF second,
        float position, float start, float end);
    static COLORREF InterpolateFlatStart(COLORREF first, COLORREF second,
        float position, float start, float end);
    static COLORREF InterpolateFlatMid(COLORREF first, COLORREF second,
        float position, float start, float end);
    static COLORREF InterpolateFlatEnd(COLORREF first, COLORREF second,
        float position, float start, float end);
    static COLORREF InterpolateCosine(COLORREF first, COLORREF second,
        float position, float start, float end);
    static COLORREF InterpolateHSLClockwise(COLORREF first, COLORREF second,
        float position, float start, float end);
    static COLORREF InterpolateHSLAntiClockwise(COLORREF first, COLORREF second,
        float position, float start, float end);
    static COLORREF InterpolateHSLLongest(COLORREF first, COLORREF second,
        float position, float start, float end);
    static COLORREF InterpolateHSLShortest(COLORREF first, COLORREF second,
        float position, float start, float end);
    static COLORREF InterpolateReverse(COLORREF first, COLORREF second,
        float position, float start, float end);

};


#endif