Half Life Game Level Viewer

//
//	Vector3.h
//
//	Copyright (c) Paul Higinbotham
//

#ifndef __VECTOR3_H_
#define __VECTOR3_H_


#include "Math.h"
#include <cassert>


namespace ZGraphics
{


template <typename TR>
class Vector3
{
public:
	Vector3();
	Vector3(TR fX, TR fY, TR fZ);
	Vector3(const TR fVector[3]);
	Vector3(const Vector3<TR> & rCopy);
	~Vector3() {}

	// Data access
	const TR & operator[] (size_t tIndex) const;
	TR & operator[] (size_t tIndex);
	const TR * GetPtr() const;
	TR * GetPtr();
	TR X() const;
	TR Y() const;
	TR Z() const;

	// assignment
	Vector3 & operator= (const Vector3 & rhs);
	Vector3 & operator= (const float fVector[3]);

	// arithmetic
	Vector3 operator* (const Vector3 &rhs) const;
	Vector3 operator* (TR fScalar) const;
	Vector3 operator/ (TR fScalar) const;
	Vector3 operator+ (const Vector3 &rhs) const;
	Vector3 operator- (const Vector3 &rhs) const;
	Vector3 operator- () const;
	//
	Vector3 & operator*= (TR fScalar);
	Vector3 & operator/= (TR fScalar);
	Vector3 & operator+= (const Vector3 & rhs);
	Vector3 & operator-= (const Vector3 & rhs);

	// compare
	bool operator== (const Vector3 & rhs) const;
	bool operator!= (const Vector3 & rhs) const;

	// Other operations
	TR Dot(const Vector3& rVector)const;
	Vector3 Cross(const Vector3 & rVector) const;
	Vector3 CrossN(const Vector3 & rVector) const;
	TR Normalize();
	TR Mag() const;
	TR MagSquared() const;
	Vector3 & ABS();
	Vector3 & Invert();

	// Class constants
	static const Vector3 cZero;
    static const Vector3 cUnitX;
    static const Vector3 cUnitY;
    static const Vector3 cUnitZ;

private:
	TR	m_vData[3];
};


// Include the implementation file
#include "Vector3.inl"


typedef Vector3<float> Vector3f;
typedef Vector3<double> Vector3d;


} /* namespace ZGraphics */


#endif /* __VECTOR3_H_ */