\documentclass{article} \usepackage{pst-solides3d} \begin{document} \pagestyle{empty} \begin{pspicture}(-4,-3)(7,5)% \psframe*[linecolor=blue!50](-4,-3)(7,5) \psset{viewpoint=40 25 20,Decran=60} \psset{solidmemory} %% definition du plan P \psSolid[object=plan, definition=equation, args={[0 0 1 0] 90}, base=-4 4 -2 3, fillcolor=white, name=P, ] \psset{plan=P} %% legende du plan \psProjection[object=texte, fontsize=20, text=P, pos=cc, ](-3.65,-1.65) \psProjection[object=cercle, args=-4 -2 1, range=0 90, ] %% %% definition du plan P1 \psSolid[object=plan, definition=equation, args={[0 0 1 -1] 90}, base=-4 4 -2 3, fillcolor=white, name=P1, ] \psset{plan=P1} %% legende du plan \psProjection[object=texte, fontsize=20, text=P', pos=cc, ](-3.65,-1.65) \psProjection[object=cercle, args=-4 -2 1, range=0 90, ] %% definition du plan P2 \psSolid[object=plan, definition=equation, args={[0 0 1 -2] 90}, base=-4 4 -2 3, fillcolor=white, name=P2, ] \psset{plan=P2} %% legende du plan \psProjection[object=texte, fontsize=20, text=P'', pos=cc, ](-3.55,-1.6) \psProjection[object=cercle, args=-4 -2 1.2, range=0 90, ] %% dessin du plan P1 en pointilles \psSolid[object=plan, args=P1, linestyle=dashed, action=draw, % fillcolor=yellow, ] %% dessin du plan P en pointilles \psSolid[object=plan, args=P, linestyle=dashed, action=draw, % fillcolor=yellow, ] \psset{fontsize=15} \composeSolid %\axesIIID(4,4,2)(5,5,6) \end{pspicture} \end{document}