#pragma once
#ifndef _IV_DECITION_GPS_DISTANCE_
#define _IV_DECITION_GPS_DISTANCE_

namespace iv {
	namespace decition {
        // 计算弧度
		double rad(double d);

		// 从两个gps坐标点（经纬度）获得两点的直线距离，单位是米
		double CalcDistance(double , double , double , double );

		//计算直角坐标距离
		double DirectDistance(double, double, double, double);

		//计算直角坐标角度
		double DirectAngle(double, double, double, double);


	}
}




#endif // !_IV_DECITION_GPS_DISTANCE_