地图投影变换

#ifndef _COORTRANS_H_INCLUDED

#define _COORTRANS_H_INCLUDED

#include

const double PI = 3.14159265353846;

class PrjPoint

{

public:

double L0; // 中央子午线经度

double B, L; // 大地坐标

double x, y; // 高斯投影平面坐标

public:

BOOL BL2xy();

BOOL xy2BL();

protected:

double a, f, e2, e12; // 基本椭球参数

double A1, A2, A3, A4; // 用于计算X的椭球参数

public:

BOOL SetL0(double dL0);

BOOL SetBL(double dB, double dL);

BOOL GetBL(double *dB, double *dL);

BOOL Setxy(double dx, double dy);

BOOL Getxy(double *dx, double *dy);

};

class PrjPoint_Krasovsky : virtual public PrjPoint

{

public:

PrjPoint_Krasovsky();

~PrjPoint_Krasovsky();

};

class PrjPoint_IUGG1975 : virtual public PrjPoint

{

public:

PrjPoint_IUGG1975();

~PrjPoint_IUGG1975();

};

double Dms2Rad(double Dms);

double Rad2Dms(double Rad);

#endif /* ndef _COORTRANS_H_INCLUDED */