//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGVector3D 类
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGVector3D 声明
// = Maintainers: 
//                  
//-------------------------------------------------------------------------------------------------------+
#ifndef _TGVECTOR3D_H_
#define _TGVECTOR3D_H_

#ifndef _TGPOINT_H_
#include "TGPoint.h"
#endif

class GEOAPI TGVector3D:public TGPoint
{
public:
	TGVector3D(double x = 0,double y = 0,double z = 0);
	TGVector3D(double *p);
	TGVector3D(float*p);
	TGVector3D(const TGPoint& pt);
	TGVector3D(const TGPoint& fromPt,const TGPoint& toPt);
	~TGVector3D();

	double Length() const;
	bool IsValid() const;
	bool IsNullVector() const;
	bool IsNormalized() const;

	bool Normalize();
	void SetVector(double x,double y,double z);
	void SetLength(double len);
	void Reverse();

	TGVector3D operator -() const;
	TGVector3D operator +(const TGPoint& vt) const;
	TGVector3D operator -(const TGPoint& vt) const;
	TGVector3D operator *(double rate) const;
	TGVector3D operator /(double rate) const;
	TGVector3D operator *(const TGPoint& vt) const;
	double operator & (const TGPoint& vt) const;

	bool IsParallel(const TGPoint& vt,bool bNormalized = false) const;

	bool IsVert(const TGPoint& vt,bool bNormalized = false) const;
	
	//夹角小于90度
	bool IsSameDirection(const TGPoint& vt,bool bNormalized = false) const;
	
	//夹角大于90度
	bool IsReverseDirection(const TGPoint& vt,bool bNormalized = false) const;
	
	//[0,PI]
	double GetAngleWith(const TGPoint& vt,bool bNormalized = false) const;
	
	//空矢量返回false
	bool GetVertVector(TGPoint& vt) const;
};
#endif