void compute_edge_lengths(const Vertices vertices);
extern double vertex_areas[N], vertex_mean_edge_lengths[N], edge_lengths[N][V6];
-extern double density;
-
-double line_bending_adjcost(const Vertices vertices);
+double line_bending_cost(const Vertices vertices);
double noncircular_rim_cost(const Vertices vertices);
double edge_length_variation_cost(const Vertices vertices);
double rim_proximity_cost(const Vertices vertices);