X():sin((u/3)-(2*v)) + - 2.4*sin((u/3)+v) Y():cos(u)*((7+cos((u/3)-(2*v))+(2*cos((u/3)+v)))) Z():sin(u)*((7+cos((u/3)-(2*v))+(2*cos((u/3)+v)))) [u]:-pi, pi [v]:-pi, pi