#macro rounded_box(C1, C2, R) merge { box { C1 + C2 - } box { C1 + C2 - } box { C1 + <0, R, R> C2 - <0, R, R> } cylinder { R } cylinder { R } cylinder { R } cylinder { R } cylinder { R } cylinder { R } cylinder { R } cylinder { R } cylinder { R } cylinder { R } cylinder { R } cylinder { R } sphere { R } sphere { R } sphere { R } sphere { R } sphere { R } sphere { R } sphere { R } sphere { R } } #end