<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
%% 
%%  Beispiel 35-00-19 auf Seite 826.
%% 
%%  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{352.81416pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-solides3d}
%StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-5,-5)(5,5)
\psset{viewpoint=50 70 30 rtp2xyz,Decran=50,lightsrc=viewpoint}
\defFunction[algebraic]{SURFACE}(x,y){x}{y}{15*(x^3-x*y^4-x/5)*Euler^(-x^2-y^2)+2*Euler^(-((x-1.225)^2+y^2))}
\psSolid[object=surfaceparametree,
         fillcolor=green!20,incolor=gray!20,
         linewidth=0.01,
         base=-4 4 -4 1.5,
         function=SURFACE,
         intersectionplan={[0 1 0 -1.5]},
         intersectioncolor=(rouge),
         intersectionlinewidth=2,
         intersectiontype=0,
         ngrid=50]%
\psSolid[object=plan,definition=normalpoint,opacity=0.5,
         fillcolor=cyan!20,
         base=-4 4 -8 8,args={0 1.5 0 [0 1 0 0]}]
\psSolid[object=surfaceparametree,
         fillcolor=green!20,incolor=gray!20,
         linewidth=0.01,
         base=-4 4 1.5 4,
         function=SURFACE,
         intersectionplan={[0 1 0 -5.5]},
         intersectioncolor=(rouge),
         intersectionlinewidth=2,
         intersectiontype=0,
         ngrid=50](0,4,0)
\end{pspicture}
\end{document}
</pre></body></html>