%% 
%%  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{190.324pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pstricks,multido}
\SpecialCoor
\input random
\def\manometre{%
  \pscircle[doubleline=true,fillstyle=solid](0,0){1}
  \psarc(0,0){0.65}{-60}{240}
  \multido{\i=-60+30}{11}{\psline(0.65;\i)(0.45;\i)}
    \psline[arrowscale=2,linewidth=2\pslinewidth]{->}(0.5;-70)(0.65;110)
    \pscircle[fillstyle=solid]{0.1}%
}
% idée empruntée à Denis Girou
\newdimen\Xd
\newdimen\Yd
\def\RandomMolecule#1{%
 \multido{\i=1+1}{#1}{%
   \setrandim\Xd{-2pt}{1pt}%
   \setrandim\Yd{-1pt}{1pt}%
   \pscircle*[linecolor=blue](\pointless\Xd,\pointless\Yd){1pt}}%
}

\StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-7,-1.2)(5,1.2)
\psclip{\psframe(-2,-1)(0.8,1)}
  \RandomMolecule{400}%
\endpsclip
\pscircle[doubleline=true,fillcolor=magenta,fillstyle=solid](-6.5,0){0.6}
\psframe[fillstyle=solid,fillcolor=lightgray](-6,-0.5)(-2,0.5)
\psline[doubleline=true,doublesep=2mm](1,0)(3.1,0)
\psframe(-4,1)(0.8,-1)
\psline(0.8,1)(1,0.1)(1,-0.1)(0.8,-1)
\psframe[fillstyle=solid](-4.1,-1.2)(-4,1.2)
\psline[linewidth=2mm](-2,-1)(-2,1)
\multido{\n=-3.5+0.5}{9}{\psline(\n,1)(\n,0.7)}
\rput{-90}(4,0){\manometre}
\end{pspicture}
\end{document}