double line_bending_cost(const Vertices vertices, int section);
double noncircular_rim_cost(const Vertices vertices, int section);
double edge_length_variation_cost(const Vertices vertices, int section);
double line_bending_cost(const Vertices vertices, int section);
double noncircular_rim_cost(const Vertices vertices, int section);
double edge_length_variation_cost(const Vertices vertices, int section);