Spring ret (max (0.0, ideal), min_dist);
ret.set_inverse_compress_strength (max (0.0, ideal - min_desired_space));
ret.set_inverse_stretch_strength (max (0.1, base_space - increment));
Spring ret (max (0.0, ideal), min_dist);
ret.set_inverse_compress_strength (max (0.0, ideal - min_desired_space));
ret.set_inverse_stretch_strength (max (0.1, base_space - increment));