/**
Set dimensions to empty, or to (Interval (0,0),Interval (0,0) */
void set_empty (bool);
- void add_at_edge (Axis a, Direction d, const Molecule &m, Real padding);
+ void add_at_edge (Axis a, Direction d, const Molecule &m, Real padding,
+ Real minimum);
void add_molecule (Molecule const &m);
void translate (Offset);