#pragma once

#ifdef MY_LIB_SHARED_BUILD
    #ifdef _WIN32
        #ifdef MY_LIB_EXPORTS
            #define POINT_LIB_API __declspec(dllexport)
        #else
            #define POINT_LIB_API __declspec(dllimport)
        #endif  // MY_LIB_EXPORTS
    #else
        #define POINT_LIB_API
    #endif  // _WIN32
#else
    #define POINT_LIB_API
#endif  // MY_LIB_SHARED_BUILD


#include <string>
#include <iostream>
#include <cmath>
#include <iomanip>

using namespace std;

extern "C" POINT_LIB_API const double eps = 1e-6;

extern "C" POINT_LIB_API bool Equal(double a, double b);

extern "C" struct POINT_LIB_API P
{
	double x, y, z;	   // 坐标
	double dx, dy, dz; // 方向
	bool isend;		   // 是否为端点
	int type;		   // 0卡箍   1未确定分支点   2已确定分支点  3连接器
	int ref;		   // 指向其代表的相应数据类型标号

	bool operator<(P B) const;
	bool operator==(P B) const;
	bool operator!=(P B) const;

	void set(int i, double v);
	const double get(int i);

	void reverse();

	P(double x1, double y1, double z1);
	P();
	P operator-(P B) const;
	P operator+(P B) const;
	P operator*(double p) const;
	P operator/(double p) const;
	void print(string s);

	// 设置方向
	void setDir(const P &dir);
};