if (orb1on = 1); color $orb1 translucent; isosurface orb1 nodots nomesh fill; endif;
if (orb2on = 1); color $orb2 translucent; isosurface orb2 nodots nomesh fill; endif;
if (orb3on = 1); color $orb3 translucent; isosurface orb3 nodots nomesh fill; endif;
if (orb4on = 1); color $orb4 translucent; isosurface orb4 nodots nomesh fill; endif;