Direction sky_;
void internal_merge_skyline (list<Building> *, list<Building> *,
- list<Building> *const result) const;
+ list<Building> *result) const;
list<Building> internal_build_skyline (list<Building> *) const;
Real internal_distance (Skyline const &, Real horizon_padding, Real *touch_point) const;
Real internal_distance (Skyline const &, Real *touch_point) const;
Real height (Real airplane) const;
Real max_height () const;
Real max_height_position () const;
+ Real left () const;
+ Real right () const;
+ Direction direction () const;
void set_minimum_height (Real height);
void clear ();
bool is_empty () const;