\documentclass{article} \usepackage{pst-solides3d} \begin{document} \pagestyle{empty} \begin{pspicture}(-6,-5)(6,8)% \psframe*[linecolor=blue!50](-6,-5)(6,7) \psset{lightsrc=viewpoint,viewpoint=50 30 15,Decran=60} \psset{solidmemory} \defFunction[algebraic]{F1}(x){3*sin(x)}{}{} %% definition du plan de projection \psSolid[object=plan, definition=equation, args={[1 0 0 0] 90}, base=-4.2 4.2 -3.2 3.2, fillcolor=white, linecolor=gray!40, plangrid, planmarks, showBase, name=monplan, ] \psset{plan=monplan,fontsize=20} %% construction et nommage d'une droite D %% passant par (0,0) et (2,1) \psProjection[object=droite, args=0 0 2 1, name=D, linecolor=red, ] %% label de la droite, au point d'abscisse 3 \psProjection[object=point, definition=xdpoint, args=3 D, text=d, pos=dr, action=none, ] %% definition du point A \psProjection[object=point, args=-3 1, name=A, text=A, pos=uc, ] %% droite parallele a d passant par A \psProjection[object=droite, definition=paral, args=D A, ] \composeSolid \axesIIID(4,4,2)(5,5,6) \end{pspicture} \end{document}