my_model(x[3], a[1]) { array center[3]; center = [5,6,3]; sel1=hfSuperell(x,center,3,3,6, 0.3,0.3); center = [5,-4.5,3]; sel2=hfSuperell(x,center,6,6,3, 2.5,2.5); center = [-5,-5,-5]; sel3=hfSuperell(x,center,4.5,4.5,3, 0.3,2.5); center = [-5,6,0]; sel4=hfSuperell(x,center,4.,4.,3, 2.5,0.3); my_model = sel1 | sel2 | sel3 | sel4; }