#pragma once

#include "MLPlNode.h"
#include "MLPline.h"
#include "MLRect.h"

class MLFuncom
{
public:
	MLFuncom();
	~MLFuncom();
};

void swap(double& a, double& b);

//判断两个浮点数据是否相等
bool		Equ(double dVal1, double dVal2);	   // ==
bool		Equ(double dVal1, double dVal2, int dot);	   // ==
//得到距离
double	GetDistance(const MLPlNode& dpt1, const MLPlNode& dpt2);
double	GetDistance(double dx1, double dy1, double dx2, double dy2);

//查找(nKey 代表线数据的列序号 x=0 y=1 z=2 l=3 s=4)
 int bs(double dbKey, MLPline& pline, int nKey = 3);

// 通过X 得到Y值
double CZ(double x0, double x1, double x2, double y1, double y2);

double cz(double dbKey, int nIndex, MLPline& pline, int nKey1, int nKey2);

double GetDistance(const MLPoint& dpt, const MLPoint& dpt1, const MLPoint& dpt2, MLPoint& dptDest);
double GetDistance(const MLPlNode& dpt, const MLPlNode& dpt1, const MLPlNode& dpt2, MLPlNode& dptDest);

//计算直线段与直线段相交关系(是否充许线1的延长)
int LineLine(double L1x1, double L1y1, double L1x2, double L1y2, double* L2x1, double* L2y1, double* L2x2, double* L2y2, bool bExtend1 = false);

//判断点是否在矩形内	
bool ptInRect(const MLRect& Rect, double dbx, double dby);

// 判断两矩形之间关系
bool CrossRtRt(const MLRect& rect1, const MLRect& rect2);

// 双精度转字符串
__declspec(dllexport) QString	ToString(int    nVal);
__declspec(dllexport) QString	ToString(double dVal);
__declspec(dllexport) QString	ToString(double dVal, int nDotNum);