#pragma once
class BaiDuMap
{
public:
	BaiDuMap();
	~BaiDuMap();

public:
	static double DEF_PI; // PI
	static double DEF_2PI; // 2*PI
	static double DEF_PI180; // PI/180.0
	static double DEF_R; // radius of earth
	double GetShortDistance(double lon1, double lat1, double lon2, double lat2);
	double GetLongDistance(double lon1, double lat1, double lon2, double lat2);
	double test();
};