%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
%% 
%%  Beispiel 22-06-80 auf Seite 455.
%% 
%%  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}
\psset{lightsrc=45 15 20,
  viewpoint=50 20 20 rtp2xyz,
  Decran=25}
\begin{pspicture}(-2,-1.5)(2,2)
\psSolid[object=cube,a=3,ngrid=3,
  hollow,inouthue=0 1 0.5 1,
  rm=36 1 44 {} for]
\end{pspicture}\\
\psscalebox{0.8}{%
\psset{lightsrc=30 30 25,
  viewpoint=50 40 30 rtp2xyz}
\begin{pspicture}(-3,-3)(3,3)
\psSurface[ngrid=.25 .25,
  inouthue=1 0 0.5 1, linewidth=0.01,
  axesboxed,algebraic](-4,-4)(4,4){%
    ((y^2)-(x^2))/4}
\end{pspicture}}
\end{document}