/*****************************************************************************/



#ifndef _MATH_H_

#define _MATH_H_





#include "Types.h"





/*****************************************************************************/



#define PI 3.14159265358979323846



#define ONE 4096

#define MAX_ANGLES 4096

#define ANGLE_MASK (MAX_ANGLES-1)





/*****************************************************************************/



extern float

	SinTable[MAX_ANGLES];





/*****************************************************************************/



extern

	void Math_Setup();





/*****************************************************************************/



#define Point3 Vector3





class Vector3

{

	public:



		float

			x,

			y,

			z;





		Vector3 operator +( Vector3 &v );

		Vector3 operator -( Vector3 &v );

		float operator *( Vector3 &v );

		Vector3& operator -=( Vector3 &v );

		int operator ==( Vector3 &v );



		void Normalize();

		void Negate();

};





float DotProduct( Vector3 *a, Vector3 *b );

float DotProduct( Vector3 &a, Vector3 &b );



Vector3 CrossProduct( Vector3 *a, Vector3 *b );

Vector3 CrossProduct( Vector3 &a, Vector3 &b );





/*****************************************************************************/



class Matrix3

{

	public:



		float

			m[3][3],

			t[3];



		void SetIdentity();



		void SetScale( float scale );

		void SetScale( float *scale );



		void SetTrans( Vector3 *trans );

		void SetTrans( float *trans );

		void SetTrans( float x, float y, float z );



		void GetTrans( Vector3 *trans );

		void GetTrans( float *trans );



		void ScaleBy( float scale );



		void RotateByX( s32 angle );

		void RotateByY( s32 angle );

		void RotateByZ( s32 angle );



		void SetRotateX( s32 angle );

		void SetRotateY( s32 angle );

		void SetRotateZ( s32 angle );



		void MulByMatrix( Matrix3 *matrix );



		void Multiply( Vector3 *vector );



		void Transform( Vector3 *vector );

		void Transform( Matrix3 *matrix );



		void CopyToMem( float *mem );

		void CopyFromMem( float *mem );

};





/*****************************************************************************/





typedef struct

{

	Vector3

		Normal;

	float

		Dist;

} Plane;





#endif