%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
%% 
%%  Beispiel 22-06-59 auf Seite 437.
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%%  Copyright (C) 2016 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
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%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{193.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-solides3d}
%StopShownPreambleCommands
\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=Ebene,args={[1 0 0 0] 90},
  base=-3.2 3.2 -2.2 2.2,planmarks]
\psset{plan=Ebene}
\psSolid[object=plan,args=Ebene,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}
