haiku/src/servers/app/Angle.h

//------------------------------------------------------------------------------
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//	File Name:		Angle.h
//	Author:			DarkWyrm <bpmagic@columbus.rr.com>
//	Description:	Angle class for speeding up trig functions
//  
//------------------------------------------------------------------------------
#ifndef _ANGLE_H_
#define _ANGLE_H_

#include <GraphicsDefs.h>

/*!
	\class Angle Angle.h
	\brief Class for speeding up trig functions. Works in degrees only.
*/
class Angle {
public:
						Angle(float angle);
						Angle();
virtual					~Angle();

		void			Normalize();

		float			Sine(void);
		Angle			InvSine(float value);

		float			Cosine(void);
		Angle			InvCosine(float value);

		float			Tangent(int *status=NULL);
		Angle			InvTangent(float value);

		uint8			Quadrant(void);
		Angle			Constrain180(void);
		Angle			Constrain90(void);

		void			SetValue(float angle);
		float			Value(void) const;

		Angle			&operator=(const Angle &from);
		Angle			&operator=(const float &from);
		Angle			&operator=(const long &from);
		Angle			&operator=(const int &from);

		bool			operator==(const Angle &from);
		bool			operator!=(const Angle &from);
		bool			operator<(const Angle &from);
		bool			operator>(const Angle &from);
		bool			operator>=(const Angle &from);
		bool			operator<=(const Angle &from);

protected:	
		float			fAngleValue;
		void			InitTrigTables(void);
};

#endif