%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 5-15-6 on page 309.
%% 
%%  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{159.83385pt}
%
\makeatletter
\newif\ifHRInner
\def\psset@HRInner#1{\@nameuse{HRInner#1}}
\psset@HRInner{false}
%
\def\psHexagon{\pst@object{psHexagon}}
\def\psHexagon@i{%
    \@ifnextchar({\psHexagon@ii}{\psHexagon@ii(0,0)}% specify center? )
}
\def\psHexagon@ii(#1)#2{%
  \begin@ClosedObj%                    closed object
    \pst@@getcoor{#1}%                 get center
    \pssetlength\pst@dimc{#2}%         set radius to pt
    \addto@pscode{%                    PostScript
      \pst@coor T %                    xM yM new origin
      \psk@dimen CLW mul %             set line width
      /Radius \pst@number\pst@dimc\space % save radius
        \ifHRInner\space 3 sqrt 2 div div \fi def % inner?
      /angle \ifHRInner 30 \else 0 \fi def % starting angle
      Radius angle PtoC moveto %       go to first point
      6 { %                            6 iterations
        /angle angle 60 add def %      alpha = alpha+60
        Radius angle PtoC L %          line to next point
      } repeat
      closepath %                      closed object
    }%
    \def\pst@linetype{3}%              set linetype
    \showpointsfalse%                  do not show base points
  \end@ClosedObj%                      end
  \ignorespaces%                       swallow spaces
}
\makeatother

\StartShownPreambleCommands
\usepackage{pstricks}
% \psHexagon as defined above
\definecolor{gray85}{gray}{0.85}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-3,-3)(3,3)
  \psHexagon[doubleline=true](2,2){1}
  \psHexagon*[linecolor=gray85,HRInner=true](2,-2){1}
  \psHexagon[doubleline=true,doublesep=0.5,%
    linecolor=blue]{2}
  \psHexagon*(-2.5,2.5){0.5}
  \psHexagon[border=3pt,HRInner=true](-1,-1){2}
\end{pspicture}
\end{document}