private RbInfo GetNearest(Point3d point3d, List <RbInfo> RbInsPoints)
{
var sorted = RbInsPoints.OrderBy(x => x.Pos.Distance2dTo(point3d)).ToList();
RbInfo ret = sorted[0];
double dist = point3d.Distance2dTo(ret.Pos);
if (dist > _MaxDist)
{
return(null);
}
return(ret);
}