import solids;

size(6cm,0);

currentprojection=orthographic(3,2,2);
currentlight=nolight;

nslice=4*nslice;
revolution b=sphere(O,1);
draw(surface(b), paleblue+opacity(0.5));

skeleton s;

b.transverse(s,reltime(b.g,0.6),P=currentprojection);
b.transverse(s,reltime(b.g,0.5),P=currentprojection);
draw(s.transverse.back,linetype("8 8",8));
draw(s.transverse.front);

b.longitudinal(s,P=currentprojection);
draw(s.longitudinal.front);
draw(s.longitudinal.back,linetype("8 8",8));