bool HasMajorAirports(Trajectory &trajectory,
std::vector<std::string> &airports)
{
return std::binary_search(airports.begin(),airports.end(),
trajectory.front().string_property("arr")) &&
std::binary_search(airports.begin(),airports.end(),
trajectory.front().string_property("dep"));
}
bool IsStraight(Trajectory &trajectory)
{
return boost::geometry::length(trajectory)/boost::geometry::distance(trajectory.front(),trajectory.back()) < 1.05;
}