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%%
%% A DANTE-Edition example
%%
%% Example 31-04-3 on page 640.
%%
%% Copyright (C) 2011 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[]{article}
\pagestyle{empty}
\setlength\textwidth{375.57637pt}
\setlength\parindent{0pt}
%
\usepackage[dvipsnames]{pstricks}
\usepackage{pst-node}
\definecolor{Bluea}{cmyk}{.2,0,0,0}
\definecolor{MonGris}{rgb}{0.8,0.8,0.8}
\definecolor{grisclair}{rgb}{0.85,0.8,0.8}
\definecolor{Copper}{cmyk}{0,0.9,0.9,0.2}
\def\lame{\psframe(0.5,2.5)}
\def\demilame{\psframe(0,1)(0.5,1.5)} % arrive au niveau de l'eau
\def\Pile{%
\rput(-1.5,0){%
\pscustom{%
\psline(-1,2)(-1,0)
\psellipticarc(0,0)(1,0.2){180}{0}
\psline(1,0)(1,2)}
\psellipse(0,2)(1,-0.2)
\psellipse(0,1)(1,0.2)
\psellipse[linecolor=blue,fillstyle=solid,fillcolor=cyan](0,1)(1,0.2)
\begin{psclip}{\psset{fillcolor=Copper,fillstyle=solid}\rput(-0.75,0){\lame}}
\psellipticarc(0,2)(1,0.2){180}{0}
\psellipticarc[linecolor=blue](0,1)(1,0.2){180}{0}
\end{psclip}%
\pscustom[linestyle=none]{%
\psline(-1,1)(-1,0)
\psellipticarc(0,0)(1,0.2){180}{0}
\psline(1,0)(1,1)
\psellipticarc(0,1)(1,0.2){0}{180}
\fill[fillstyle=hlines,hatchcolor=cyan,hatchsep=0.3\pslinewidth,hatchwidth=0.1\pslinewidth]}
\rput(-0.75,0){{\psset{linestyle=none,fillcolor=Copper,
fillstyle=solid}\demilame}\psline(0,1)(0,2.5)(0.5,2.5)(0.5,1)}
\uput[180](-0.75,2.5){Cu}}
%
\rput(1.5,0){%
\pscustom{%
\psline(-1,2)(-1,0)
\psellipticarc(0,0)(1,0.2){180}{0}
\psline(1,0)(1,2)}
\psellipse(0,2)(1,-0.2)
\psellipse(0,1)(1,0.2)
\begin{psclip}{\psset{fillcolor=lightgray,fillstyle=solid}\rput(0.25,0){\lame}}
\psellipticarc(0,2)(1,0.2){180}{0}
\psellipticarc(0,1)(1,0.2){180}{0}
\end{psclip}
\pscustom[linestyle=none]{%
\psline(-1,1)(-1,0)
\psellipticarc(0,0)(1,0.2){180}{0}
\psline(1,0)(1,1)
\psellipticarc(0,1)(1,0.2){0}{180}
\fill[fillstyle=hlines,hatchcolor=gray,
hatchsep=0.3\pslinewidth,hatchwidth=0.1\pslinewidth]}
\rput(.25,0){{\psset{linestyle=none,fillcolor=lightgray,
fillstyle=solid}{\demilame}}\psline(0,1)(0,2.5)(0.5,2.5)(0.5,1)}
\uput[0](0.75,2.5){Zn}}%
}
\begin{document}
\begin{pspicture}(-5,0)(5,4.5)
\psset{dimen=middle}
% le dessin du pont
\psline[linearc=0.2,doubleline=true,doublesep=1mm](-0.75,0.5)(-0.75,2.5)(0.75,2.5)(0.75,0.5)
\Pile
\psline(-2,2.5)(-2,4)(2,4)(2,2.5)
\psframe[fillstyle=solid](0,3.8)(1,4.2)
\pscircle[fillstyle=solid](-1,4){0.4}
\rput(-1,4){A}
\uput{0.5cm}[155](-1,4){$+$}
\uput{0.5cm}[25](-1,4){$-$}
% les parties visibles du pont
\psline[linearc=0.2,doubleline=true,doublesep=1mm](-0.75,2)(-0.75,2.5)(0.75,2.5)(0.75,2)
\psline[doubleline=true,doublesep=1mm](-0.75,1)(-0.75,1.3)
\psline[doubleline=true,doublesep=1mm](0.75,1)(0.75,1.3)
\end{pspicture}
\end{document}
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