VC+MO最短路径算法 // 计算线的几何长度

double CalcLength()

// 通过线的id得到线数据

BOOL GetLineData(int id)

// 得到距离某点最近的线段，返回该线段的id

int GetNearestLineData( double x, double y)

// 判断两点是否重合

BOOL IsPtCoincide( NetPoint ptFirst, NetPoint ptSecond )

// 得到最邻近的点-VC MO shortest path algorithm// calculate the geometric line length double CalcLength ()// line through the data line id be BOOL GetLineData (int id)// a distance to the nearest point of a segment, return to the line of id int GetNearestLineData (double x, double y)// 2:00 judgment whether coincidence BOOL IsPtCoincide (NetPo int ptFirst, NetPoint ptSecond)// most neighboring points