\documentclass[a4paper]{article} \usepackage{pst-solides3d} \pagestyle{empty} \begin{document} \begin{pspicture}(-4,-5)(-6,8) \psset{solidmemory} \psset{unit=0.25} \psset{viewpoint=-10 -10 10, lightsrc=-8 -5 6, Decran=50} \psSolid[object=sphere, r=6.5, ngrid=36 36, % RotY=90, fillcolor=blue, incolor=lightgray, hollow, name=sph1, action=none](0,0,0) \psSolid[object=tore, fillcolor=red, r1=5, r0=2.7, ngrid=36 36, hollow, name=sph2, action=none ](0,0,0) \psSolid[% object=fusion, base=sph1 sph2, name=sphere, opacity=0.6, action=draw** ](0,0,0)% \composeSolid \end{pspicture} \end{document}