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%%
%% 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{352.81416pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pst-plot,pst-coil}
\SpecialCoor
\StopShownPreambleCommands
\begin{document}
\newdimen\Y\Y=3.2cm
\fbox{\pspicture(3,3)(5,8.7)
\psclip{\pspolygon[linewidth=0pt,linestyle=none]%
(3.0,8.7)(3.0,3.2)(3.225,7.5)(3.45,3.2)(3.675,7.5)(3.9,3.2)%
(4.125,7.5)(4.35,3.2)(4.575,7.5)(4.8,3.2)(4.8,8.7)(3.0,8.7)}%
\loop\ifdim\Y<8.7cm\rput(3,\Y){\psCoil[coilaspect=0,
coilarm=0,coilheight=3,coilwidth=.1cm,linearc=.1,linewidth=.4pt]{0}{2880}}
\advance\Y by.15cm\repeat
\endpsclip
\endpspicture}\quad
%
\def\Radius{2 }
\def\radius{0.3 }
\def\speed{40 }
\pspicture(-2.2,-2.2)(2.3,2.2)
\parametricplot[plotpoints=3000]{0}{360}{
\radius t \speed mul cos mul
\Radius t cos mul add
\radius t \speed mul sin mul
\Radius t sin mul add
}
\endpspicture
%
\pstVerb{ /Radius 0.5 def }
\pspicture(-2.2,-2.2)(2.2,2.2)
\parametricplot[plotpoints=3000]{0}{1080}{
\radius t \speed mul cos mul
Radius t cos mul add
\radius t \speed mul sin mul
Radius t sin mul add
Radius 0.0015 add /Radius exch def
}
\endpspicture
\end{document}
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