%% 
%%  A DANTE-Edition example
%% 
%%  Example 23-06-59 on page 413.
%% 
%%  Copyright (C) 2011 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{375.57637pt}
\setlength\parindent{0pt}

\usepackage{pst-solides3d}

\begin{document}
\begin{pspicture}(-3,-3)(4,3.5)
\psset{lightsrc=50 20 20,Decran=60,viewpoint=50 30 15,solidmemory}
\psSolid[object=plan,definition=equation,name=Plain,args={[1 0 0 0] 90},
  base=-3.2 3.2 -2.2 2.2,planmarks]  \psset{plan=Plain}
\psSolid[object=plan,args=Plain,plangrid,linecolor=gray!40,action=none]
\psProjection[object=line,args=-1 0 -3 1 1 2,name=P]
\psProjection[object=line,args=P -1 0 -45,definition=rotatepol,linecolor=blue]
\psProjection[object=line,linestyle=dashed,definition={2 -2 addv} papply,args=P]
\axesIIID(6,4,3)
\end{pspicture}
\end{document}