public LineData ToLineData()
{
LineData lineData = new LineData(_centerP.X, _centerP.Y, _endP.X, _endP.Y, 0);
foreach (var site in _sitePos)
{
lineData.AddSite(new SiteData(site.ID, site._rate, site._direction, (int)site._type, site.Name, site.UpName));
}
return(lineData);
}