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%%
%% A DANTE-Edition example
%%
%% Example 14-03-1 on page 159.
%%
%% 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{pstricks,pst-xkey}\makeatletter
\define@boolkey[psset]{}[Pst@]{HRInner}[true]{} % a boolean key
\psset{HRInner=false,unit=0.7}% unit only reduced for display in this book
\def\psHexagon{\pst@object{psHexagon}}% defined it as an object
\def\psHexagon@i{\@ifnextchar({\psHexagon@ii}{\psHexagon@ii(0,0)}}% set default centre
\def\psHexagon@ii(#1)#2{%
\begin@ClosedObj% closed object, i.e. can be filled
\pst@@getcoor{#1}% get centre
\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
\ifPst@HRInner\space 3 sqrt 2 div div \fi def % adjust radius if inner
/angle \ifPst@HRInner 30 \else 0 \fi def % starting angle
Radius angle PtoC moveto % go to the first point
6 {/angle angle 60 add def % set alpha to alpha+60
Radius angle PtoC L % draw line to the next point
} repeat % repeat
closepath }% object closed / end pscode
\def\pst@linetype{3}% set line type
\showpointsfalse% do not show support points
\end@ClosedObj\ignorespaces}% eat spaces
\makeatother
\begin{document}
\begin{pspicture}(-3,-3)(3,3)
\psHexagon[linewidth=3pt,linecolor=red]{2.5}
\pscircle[linestyle=dashed,linecolor=red]{2.5}
\psHexagon[linewidth=3pt,linecolor=blue,HRInner=true]{2.5}
\pscircle[linestyle=dashed,linecolor=blue]{2.17}
\end{pspicture}\hspace{1cm}
\begin{pspicture}[showgrid](-3,-3)(3,3)
\psHexagon[doubleline=true](2,2){1}\psHexagon*[linecolor=gray!15,
HRInner=true](2,-2){1}
\psHexagon[doubleline=true,doublesep=0.5,linecolor=magenta]{2}
\psHexagon*(-2.5,2.5){0.5}\psHexagon[border=3pt,HRInner=true](-1,-1){2}
\end{pspicture}
\end{document}
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