//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGPoint 类
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGPoint 声明
// = Maintainers: 
//                  
//-------------------------------------------------------------------------------------------------------+
#ifndef _TGPOINT_H_
#define _TGPOINT_H_

class GEOAPI TGPoint
{
public:
	TGPoint(double *p);
	TGPoint(float  *p);
	TGPoint(double X = 0, double Y = 0, double Z = 0);
	~TGPoint();

	void operator += (const TGPoint& vt);
	void operator -= (const TGPoint& vt);
	void operator *= (double rate);
	void operator /= (double rate);

	bool operator == (const TGPoint& pt) const;
	bool operator != (const TGPoint& pt) const;
	bool operator >  (const TGPoint& pt) const;
	bool operator <  (const TGPoint& pt) const;
	
	TGPoint operator + (const TGPoint& vt) const;
	TGPoint operator - (const TGPoint& vt) const;
	TGPoint operator * (double rate) const;
	TGPoint operator / (double rate) const;
	TGPoint operator - () const;

	operator double*() const;
	double&  operator[](int i);

	void SetPoint(double X,double Y,double Z);
	void SetPoint(double X,double Y);

	double Length2D() const;
	double Length3D() const;
	bool Equal2D(const TGPoint& pt) const;

public:
	double x,y,z;
};
#endif