#ifndef _PIXEL_GR_H

#define _PIXEL_GR_H

#include "tcommon.h"

#include <math.h></math.h>

#undef DVAPI

#undef DVVAR

#ifdef TCOLOR_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

//! r,g,b,m; 4 byte/pixel

class TPixelRGBM32;

//! r,g,b,m; 8 byte/pixel

class TPixelRGBM64;

//! Double r,g,b,m ; 16 byte/pixel

class TPixelD;

//! Gray Scale 1 byte/pixel

class TPixelGR8;

//! Gray Scale 2 byte/pixel

class TPixelGR16;

//-----------------------------------------------------------------------------

/*! grey tones, 8 bits 

   A set of predefined colors are included as well.

*/

class DVAPI TPixelGR8

{

public:

	static const int maxChannelValue;

	typedef UCHAR Channel;

	UCHAR value;

	TPixelGR8(int v = 0) : value(v){};

	TPixelGR8(const TPixelGR8 &pix) : value(pix.value){};

	inline bool operator==(const TPixelGR8 &p) const { return value == p.value; };

	inline bool operator!=(const TPixelGR8 &p) const { return value != p.value; };

	inline bool operator<(const TPixelGR8 &p) const { return value < p.value; };

	inline bool operator<=(const TPixelGR8 &p) const { return value <= p.value; };

	inline bool operator>(const TPixelGR8 &p) const { return value > p.value; };

	inline bool operator>=(const TPixelGR8 &p) const { return value >= p.value; };

	inline void setValue(int _value) { value = (UCHAR)_value; }

	//!In this conversion instead of truncating values fron 16 to 8 a randomic dithering is performed.

	//    randomNumber is an unsigned int random value

	static inline TPixelGR8 from(const TPixelGR16 &pix, TUINT32 randomNumber); // per il dithering

	//!In this conversion instead of truncating values fron 64 to 8 a randomic dithering is performed.

	//    randomNumber is an unsigned int random value

	static TPixelGR8 from(const TPixelRGBM64 &pix, TUINT32 randomNumber); // per il dithering

	//!Converts TPixelRGBM32 into TPixelGR8

	static TPixelGR8 from(const TPixelRGBM32 &pix);

	//!Converts TPixelGR16 into TPixelGR8

	static inline TPixelGR8 from(const TPixelGR16 &pix);

	//!Converts TPixelD into TPixelGR8

	static TPixelGR8 from(const TPixelD &pix);

	static const TPixelGR8 White;

	static const TPixelGR8 Black;

};

//-----------------------------------------------------------------------------

/*!grey tones, 16 bits */

class DVAPI TPixelGR16

{

public:

	static const int maxChannelValue;

	typedef USHORT Channel;

	USHORT value;

	TPixelGR16(int v = 0) : value(v){};

	TPixelGR16(const TPixelGR16 &pix) : value(pix.value){};

	inline bool operator==(const TPixelGR16 &p) const { return value == p.value; };

	inline bool operator!=(const TPixelGR16 &p) const { return value != p.value; };

	inline bool operator<(const TPixelGR16 &p) const { return value < p.value; };

	inline bool operator<=(const TPixelGR16 &p) const { return value <= p.value; };

	inline bool operator>(const TPixelGR16 &p) const { return value > p.value; };

	inline bool operator>=(const TPixelGR16 &p) const { return value >= p.value; };

	inline void setValue(int _value) { value = (USHORT)_value; }

	static TPixelGR16 from(const TPixelRGBM64 &pix);

	static TPixelGR16 from(const TPixelD &pix);

	static const TPixelGR16 White;

	static const TPixelGR16 Black;

};

//-----------------------------------------------------------------------------

class DVAPI TPixelGRD

{

public:

	typedef double Channel;

	double value;

	TPixelGRD(double v = 0.0) : value(v){};

	TPixelGRD(const TPixelGRD &pix) : value(pix.value){};

	inline bool operator==(const TPixelGRD &p) const { return value == p.value; };

	inline bool operator<(const TPixelGRD &p) const { return value < p.value; };

	inline void setValue(double _value) { value = (double)_value; }

	static TPixelGRD from(const TPixelGR8 &pix) { return TPixelGRD((double)(pix.value)); }

};

#endif