%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 5-6-16 on page 238.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  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.
%% 

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{207.83385pt}
\StartShownPreambleCommands
\usepackage{pstricks}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}[showgrid=true](4,3)
 \psline*[linecolor=green,linearc=0.4]%
    (0,2)(1.5,2)(1.5,3)(0,3)(0,2)
 \pspolygon*[linecolor=red,linearc=0.4]%
    (2,2)(3.5,2)(3.5,3)(2,3)(2,2)
 \psline[linearc=0.3,doubleline=true]{->}%
   (0,0)(1,2)(2,1.5)(1.5,0.5)(3,0.5)(4,1.5)
\end{pspicture}

\end{document}
