void update_neighbors();
void set_slope(TrackOrder &, float, float);
std::vector<R2C2::Track *> create_straight(const R2C2::Vector &, float, float, float);
void update_neighbors();
void set_slope(TrackOrder &, float, float);
std::vector<R2C2::Track *> create_straight(const R2C2::Vector &, float, float, float);