\documentclass[a4paper]{article} \usepackage{pst-solides3d} \pagestyle{empty} \begin{document} %@AUTEUR: Juergen Gilg \begin{pspicture}(-4,-5)(-6,8) \psset{solidmemory} \psset{unit=0.55} \psset{lightsrc=10 5 10,SphericalCoor,viewpoint=20 25 20,Decran=50} \psSolid[% object=tore, r1=3, r0=1.25, fillcolor=lightgray, incolor=lightgray, hollow, ngrid=24 36, action=none, name=sph1, ](0,0,0) \psSolid[% object=tore, r1=3, r0=1, fillcolor=lightgray, incolor=lightgray, RotY=90, hollow, ngrid=24 36, action=none, name=sph2, ](0,-2,0) \psSolid[% object=fusion, base=sph1 sph2, name=sphere, opacity=0.6, action=draw** ](0,0,0)% \composeSolid \end{pspicture} \end{document}