一个经纬度相关计算的C++类

--------------CJWD.h-------------- 

#ifndef __JWD_AND_HELPER_20051005

#define __JWD_AND_HELPER_20051005 

#include "stdafx.h"

#include <math.h>

#include <iostream>

using namespace std; 

#ifndef PI

#define PI 3.14159265;

#endif

static double Rc = 6378137; // 赤道半径

static double Rj = 6356725; // 极半径 

namespace CDYW{


class JWD

{

public:

double m_LoDeg, m_LoMin, m_LoSec; // longtitude 经度

double m_LaDeg, m_LaMin, m_LaSec;

double m_Longitude, m_Latitude;

double m_RadLo, m_RadLa;

double Ec;

double Ed;

public:

// 构造函数, 经度: loDeg 度, loMin 分, loSec 秒; 纬度: laDeg 度, laMin 分, laSec秒

  JWD(double loDeg, double loMin, double loSec, double laDeg, double laMin, double laSec)

{

 m_LoDeg=loDeg; m_LoMin=loMin; m_LoSec=loSec; m_LaDeg=laDeg; m_LaMin=laMin; m_LaSec=laSec;

 m_Longitude = m_LoDeg + m_LoMin / 60 + m_LoSec / 3600;

 m_Latitude = m_LaDeg + m_LaMin / 60 + m_LaSec / 3600;

 m_RadLo = m_Longitude * PI / 180.;