%% 
%%  Ein Beispiel der DANTE-Edition
%% 
%% 
%%  Copyright (C) 2010 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[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{166.324pt}
\setlength\parindent{0pt}
\usepackage{pst-3d}
\makeatletter
\def\xyEbene#1{%
  \ThreeDput[normal=0 0 1](0,0,0){% xy-Ebene
    \psgrid(0,0)(#1,#1)%
    \psline{->}(0,0)(0,#1) \psline{->}(0,0)(#1,0)
    \ifdim\psk@gridlabels pt>\z@
      \uput[180]{0.2}(0,#1){$y$} \uput[-90]{0.2}(#1,0){$x$}%
    \fi
  }}
\def\xzEbene#1{%
  \ThreeDput[normal=0 -1 0](0,0,0){% xz-Ebene
    \psgrid(0,0)(#1,#1)%
    \psline{->}(0,0)(0,5) \psline{->}(0,0)(#1,0)
    \ifdim\psk@gridlabels pt>\z@
      \uput[180]{0.2}(0,#1){$z$} \uput[-90]{0.2}(#1,0){$x$}%
    \fi
  }}
\def\yzEbene#1{%
  \ThreeDput[normal=1 0 0](0,0,0){% yz-Ebene
    \psgrid(0,0)(#1,#1)%
    \psline{->}(0,0)(0,#1) \psline{->}(0,0)(#1,0)
    \ifdim\psk@gridlabels pt>\z@
      \uput[180]{0.2}(0,#1){$z$} \uput[-90]{0.2}(#1,0){$y$}%
    \fi
}}
%
\def\DreiDKOSystem{\@ifnextchar[{\DreiDKOSystem@i}{\DreiDKOSystem@i[]}}
\def\DreiDKOSystem@i[#1]#2{{%
  \psset{#1}%
  \xyEbene{#2}\xzEbene{#2}\yzEbene{#2}}}
\makeatother
\StartShownPreambleCommands
\usepackage{pst-3d}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-3,-2.25)(-3,3.25)
  \psset{unit=0.7,viewpoint=1 1 0.5,
    viewangle=20}
  \DreiDKOSystem[subgriddiv=0,
    gridcolor=black!40]{5}
  \ThreeDput(0,0,0){%
    \psframe*[linecolor=gray!20](4,4)}
  \ThreeDput(2,2,0){\Huge Unten}
\end{pspicture}
\end{document}
