%% psgo.sty
%% Copyright 2004, 2003,2001 V. Bos
%
% This program may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.2
% of this license or (at your option) any later version.
% The latest version of this license is in
%   http://www.latex-project.org/lppl.txt
% and version 1.2 or later is part of all distributions of LaTeX
% version 1999/12/01 or later.
%
% This program consists of the files:
%
%   psgo.sty
%   psgomanual.tex
%   psgomanual.ps
%
% RCS-ID: $Id: psgo.sty,v 1.7 2004/02/24 10:20:11 vbos Exp $
%
\NeedsTeXFormat{LaTeX2e}%
\ProvidesPackage{psgo}[2008/09/04, v0.17]
\message{`PSGO', <2008/09/04>, v0.17}
\RequirePackage{pstricks,pst-node,calc,ifthen}

\newcommand{\psgo}{\textsf{psgo}}
\newsavebox{\stmarkbox}
\newcounter{gomove}
\setcounter{gomove}{-1}
\newcounter{boardsize}
\newboolean{blackmove}
\setboolean{blackmove}{true}
\newcommand{\toggleblackmove}{%
 \ifthenelse{\boolean{blackmove}}{\setboolean{blackmove}{false}}{\setboolean{blackmove}{true}}%
}
\newlength{\goxunit}
\newlength{\goyunit}
\newcommand{\setgounit}[1]{\setlength{\goxunit}{#1}\setlength{\goyunit}{1.115\goxunit}}
\setgounit{0.6cm}
\newcommand{\hatchangle}{-42.5}
\newlength{\tmplx}
\newlength{\tmply}
\newlength{\tmpxa}%
\newlength{\tmpxb}%
\newlength{\tmpya}%
\newlength{\tmpyb}%
\newcounter{gotmpc}
\newcommand{\pointbox}[1]{\raisebox{-0.5\height+0.5\depth}[0pt][0pt]{\makebox[0pt]{#1}}}
\newcommand{\golabelformat}[1]{{\sffamily #1}}
\newcommand{\goxposition}[1]{%
       \ifx#1a 0\else%
       \ifx#1b 1\else%
       \ifx#1c 2\else%
       \ifx#1d 3\else%
       \ifx#1e 4\else%
       \ifx#1f 5\else%
       \ifx#1g 6\else%
       \ifx#1h 7\else%
       \ifx#1j 8\else%
       \ifx#1k 9\else%
       \ifx#1l 10\else%
       \ifx#1m 11\else%
       \ifx#1n 12\else%
       \ifx#1o 13\else%
       \ifx#1p 14\else%
       \ifx#1q 15\else%
       \ifx#1r 16\else%
       \ifx#1s 17\else%
       \ifx#1t 18\else%
       \relax%
       \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi%
}%
\newcommand{\goyposition}[1]{%
       \ifnum#1=1 0\else%
       \ifnum#1=2 1\else%
       \ifnum#1=3 2\else%
       \ifnum#1=4 3\else%
       \ifnum#1=5 4\else%
       \ifnum#1=6 5\else%
       \ifnum#1=7 6\else%
       \ifnum#1=8 7\else%
       \ifnum#1=9 8\else%
       \ifnum#1=10 9\else%
       \ifnum#1=11 10\else%
       \ifnum#1=12 11\else%
       \ifnum#1=13 12\else%
       \ifnum#1=14 13\else%
       \ifnum#1=15 14\else%
       \ifnum#1=16 15\else%
       \ifnum#1=17 16\else%
       \ifnum#1=18 17\else%
       \ifnum#1=19 18\else%
       \relax%
       \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi%
}%

\newenvironment{gomoves}{%
       \newcommand{\mdd}[4]{%
               \setlength{\tmpxa}{\goxposition{##1}\goxunit}\addtolength{\tmpxa}{-0.5\goxunit}%
               \setlength{\tmpxb}{\goxposition{##3}\goxunit}\addtolength{\tmpxb}{0.5\goxunit}%
               \setlength{\tmpya}{\goyposition{##2}\goyunit}\addtolength{\tmpya}{-0.5\goyunit}%
               \setlength{\tmpyb}{\goyposition{##4}\goyunit}\addtolength{\tmpyb}{0.5\goyunit}%
               \psframe[dimen=middle,fillstyle=vlines,hatchsep=2pt,hatchwidth=0.2pt,hatchangle=\hatchangle,linestyle=none]%
               (\tmpxa,\tmpya)(\tmpxb,\tmpyb)%
               }%
       \newcommand{\placesymbol}[3]{%
               \ifthenelse{\value{boardsize} > \goxposition{##2}%
                           \and \value{boardsize} > \goyposition{##3}}{%
                       \rput(\goxposition{##2},\goyposition{##3}){##1}%
               }{}%
               }%
       \newcommand{\markpos}[3]{\placesymbol{\psframebox[dimen=inner,fillcolor=white,fillstyle=solid,linestyle=none,boxsep=false,framesep=0.3\goxunit]{##1}}{##2}{##3}}%
       \newcommand{\blackstone}[3][\relax]{%
               \placesymbol{\pscircle[linewidth=0.4pt,fillstyle=solid,fillcolor=black](0,0){0.5\goxunit}%
                         {\psset{linecolor=white,fillcolor=white,hatchcolor=gray}\color{white}##1}}{##2}{##3}%
               }%
       \newcommand{\whitestone}[3][\relax]{%
               \placesymbol{\pscircle[linewidth=0.4pt,fillstyle=solid,fillcolor=white](0,0){0.5\goxunit}%
                         {\psset{linecolor=black,fillcolor=black,hatchcolor=gray}\color{black}##1}}{##2}{##3}%
               }%
       \renewcommand{\stone}[4][\nomark{\relax}]{%
%               \def\stmark{\raisebox{-0.5\height+0.5\depth}[0.5\totalheight][0.5\totalheight]{\makebox[0pt]{##1}}}%
               \def\stmark{\pointbox{##1}}
               \ifthenelse{\equal{##2}{black}}%
                          {\blackstone[\stmark]{##3}{##4}}%
                          {\whitestone[\stmark]{##3}{##4}}%
               }%
       \newcommand{\move}{\@ifstar{\movestar}{\movenostar}}%
       \newcommand{\movestar}[3][\nomark]{%
               \ifthenelse{\boolean{blackmove}}%
                          {\stone[##1]{black}{##2}{##3}}%
                          {\stone[##1]{white}{##2}{##3}}%
               \toggleblackmove%
               }%
       \newcommand{\movenostar}[3][\nomark]{%
               \refstepcounter{gomove}%
               \ifthenelse{\boolean{blackmove}}%
                          {\stone[##1\rput(0,0){\golabelformat{\thegomove}}]{black}{##2}{##3}}%
                          {\stone[##1\rput(0,0){\golabelformat{\thegomove}}]{white}{##2}{##3}}%
               \toggleblackmove%
               }%
   \newcommand{\pass}{\@ifstar{\passstar}{\passnostar}}%
   \newcommand{\passstar}{\toggleblackmove}%
   \newcommand{\passnostar}{\refstepcounter{gomove}\toggleblackmove}%
       \newcommand{\goline}[4]{\psline[linewidth=1.4pt,linecolor=black,linestyle=solid]%
               (\goxposition{##1},\goyposition{##2})(\goxposition{##3},\goyposition{##4})%
               }%
       \newcommand{\goarrow}[4]{\psline[linewidth=1.4pt,linecolor=black,linestyle=solid,arrowscale=1.5]%
               {->}%
               (\goxposition{##1},\goyposition{##2})(\goxposition{##3},\goyposition{##4})%
               }%
       }{}%
\newcommand{\xpositionmarks}[2]{%
       \whiledo{\value{#1} < #2}{%
         \rput[t](\value{#1},-\goyunit){%
           \addtocounter{#1}{1}%
           \ifthenelse{\value{#1} > 8}%
             {\addtocounter{#1}{1}\golabelformat{\Alph{#1}}\addtocounter{#1}{-1}}%
             {\golabelformat{\Alph{#1}}}%
           \addtocounter{#1}{-1}}%
     \setlength{\tmply}{#2\goyunit}%
         \rput[B](\value{#1},\tmply){%
           \addtocounter{#1}{1}%
           \ifthenelse{\value{#1} > 8}%
             {\addtocounter{#1}{1}\golabelformat{\Alph{#1}}\addtocounter{#1}{-1}}%
             {\golabelformat{\Alph{#1}}}%
           \addtocounter{#1}{-1}}%
         \stepcounter{#1}%
         }%
       }%
\newcommand{\ypositionmarks}[2]{%
       \whiledo{\value{#1} < #2}{%
         \addtocounter{#1}{1}%
         \edef\ypos{\arabic{#1}}%
         \addtocounter{#1}{-1}%
         \rput[r](-\goxunit,\value{#1}){\golabelformat{\ypos}}%
     \setlength{\tmplx}{#2\goxunit}%
         \rput[l](\tmplx,\value{#1}){\golabelformat{\ypos}}%
         \stepcounter{#1}%
         }%
       }%

\def\psgosetboardsizes(#1,#2)(#3,#4){%
 \def\psgollx{#1}%
 \def\psgolly{#2}%
 \ifthenelse{#3 > \value{boardsize}}{\def\psgourx{\value{boardsize}}}{\def\psgourx{#3}}%
 \ifthenelse{#4 > \value{boardsize}}{\def\psgoury{\value{boardsize}}}{\def\psgoury{#4}}%
}
\newboolean{withindices}%
\setboolean{withindices}{true}%
\newenvironment{psgopartialboard}[2][19]{%
       \setcounter{boardsize}{#1}%
   \psgosetboardsizes#2%
       \psset{xunit=\goxunit,yunit=\goyunit}%
   \ifthenelse{\boolean{withindices}}%
              {\def\xoffset{2\goxunit}\def\yoffset{2\goyunit}}%
              {\def\xoffset{.5\goxunit}\def\yoffset{.5\goyunit}}%
   \ifthenelse{\psgollx = 1 \or \psgollx < 1}%
              {\def\psgollxval{-\xoffset}}%
              {\setlength{\tmplx}{\psgollx\goxunit - 1\goxunit}\edef\psgollxval{\the\tmplx}}%
   \ifthenelse{\psgolly = 1 \or \psgolly < 1}%
              {\def\psgollyval{-\yoffset}}%
              {\setlength{\tmply}{\psgolly\goyunit - 1\goyunit}\edef\psgollyval{\the\tmply}}%
   \ifthenelse{\psgourx = \value{boardsize} \or \psgourx > \value{boardsize}}%
              {\setlength{\tmplx}{\value{boardsize}\goxunit - \goxunit + \xoffset}%
               \edef\psgourxval{\the\tmplx}}%
              {\def\psgourxval{\psgourx\goxunit}}%
   \ifthenelse{\psgoury = \value{boardsize} \or \psgoury > \value{boardsize}}%
              {\setlength{\tmply}{\value{boardsize}\goyunit - \goyunit + \yoffset}%
               \edef\psgouryval{\the\tmply}}%
              {\def\psgouryval{\psgoury\goyunit}}%
       \begin{pspicture}(\psgollxval,\psgollyval)(\psgourxval,\psgouryval)%
   \ifthenelse{\psgollx = 1 \or \psgollx < 1}%
              {\def\psgollxval{-\xoffset}}%
              {\setlength{\tmplx}{\psgollx\goxunit - 1.5\goxunit}\edef\psgollxval{\the\tmplx}}%
   \ifthenelse{\psgolly = 1 \or \psgolly < 1}%
              {\def\psgollyval{-\yoffset}}%
              {\setlength{\tmply}{\psgolly\goyunit - 1.5\goyunit}\edef\psgollyval{\the\tmply}}%
   \ifthenelse{\psgourx = \value{boardsize} \or \psgourx > \value{boardsize}}%
              {\setlength{\tmplx}{\value{boardsize}\goxunit - \goxunit + \xoffset}%
               \edef\psgourxval{\the\tmplx}}%
              {\setlength{\tmplx}{\psgourx\goxunit - .5\goxunit}%
               \edef\psgourxval{\the\tmplx}}%
   \ifthenelse{\psgoury = \value{boardsize} \or \psgoury > \value{boardsize}}%
              {\setlength{\tmply}{\value{boardsize}\goyunit - \goyunit + \yoffset}%
               \edef\psgouryval{\the\tmply}}%
              {\setlength{\tmply}{\psgoury\goyunit - .5\goyunit}%
               \edef\psgouryval{\the\tmply}}%
   %% uncomment the following line to get a visual bounding box
   %% \psframe[linecolor=green,linewidth=0.4pt](\psgollxval,\psgollyval)(\psgourxval,\psgouryval)
   \psclip{\psframe[linecolor=white,linewidth=0](\psgollxval,\psgollyval)(\psgourxval,\psgouryval)}%
       \setlength{\tmply}{\value{boardsize}\goyunit + 0.5\goyunit}%
       \setlength{\tmplx}{\value{boardsize}\goxunit + 0.5\goxunit}%
       \addtolength{\tmply}{-1.5\goyunit}%
       \addtolength{\tmplx}{-1.5\goxunit}%
       \multips(0,0)(1,0){\value{boardsize}}{\psline[linewidth=0.2pt](0,0)(0,\tmply)}%
       \multips(0,0)(0,1){\value{boardsize}}{\psline[linewidth=0.2pt](0,0)(\tmplx,0)}%
       \psframe[linewidth=1pt](0,0)(\tmplx,\tmply)%
   \ifthenelse{\boolean{withindices}}{%
         \setcounter{gotmpc}{0}%
         \xpositionmarks{gotmpc}{\value{boardsize}}%
         \setcounter{gotmpc}{0}%
         \ypositionmarks{gotmpc}{\value{boardsize}}%
   }{\relax}%
       \ifthenelse{\equal{\value{boardsize}}{19}}{%
         \multips(3,3)(0,6){3}{\pscircle[fillstyle=solid,fillcolor=black](0,0){.15\goxunit}}%
         \multips(9,3)(0,6){3}{\pscircle[fillstyle=solid,fillcolor=black](0,0){.15\goxunit}}%
         \multips(15,3)(0,6){3}{\pscircle[fillstyle=solid,fillcolor=black](0,0){.15\goxunit}}%
       }{\relax}%
       \begin{gomoves}%
       }%
       {\end{gomoves}%
   \endpsclip%
       \end{pspicture}%
       }%
\newenvironment{psgoboard}[1][19]{%
 \begin{psgopartialboard}[#1]{(0,0)(#1,#1)}%
}{%
 \end{psgopartialboard}%
}

\newenvironment{psgopartialboard*}[2][19]{%
 \setboolean{withindices}{false}%
 \begin{psgopartialboard}[#1]{#2}%
}{\end{psgopartialboard}}

\newenvironment{psgoboard*}[1][19]{%
 \begin{psgopartialboard*}[#1]{(0,0)(#1,#1)}%
}{%
 \end{psgopartialboard*}%
}

\newcommand{\nomark}{\relax}%
\newcommand{\factor}{0.28284271247461901}% = 2/5 * sin(1/4 * pi)
\newcommand{\markma}{%
       \psline[linewidth=1.4pt](-\factor,-\factor)(\factor,\factor)%
       \psline[linewidth=1.4pt](-\factor,\factor)(\factor,-\factor)%
       }
\newcommand{\marktr}{%
       \rput(0,-0.3\goxunit){\pstriangle(-0.66\goxunit,0.66\goxunit)}%
       }%
\newcommand{\markcr}{%
       \pscircle(0,0){0.33\goxunit}%
       }
\newcommand{\marksq}{%
       \psframe(-0.33\goxunit,-0.33\goxunit)(0.33\goxunit,0.33\goxunit)%
       }
\newcommand{\marklb}[1]{%
       \rput(0,0){\golabelformat{#1}}%
       }%
\newcommand{\marksl}{%
       \psframe[fillstyle=solid,fillcolor=gray,linecolor=gray](-0.22\goxunit,-0.22\goxunit)(0.22\goxunit,0.22\goxunit)%
       }%
\newcommand{\markdd}{%
       \psframe[dimen=middle,fillstyle=vlines,hatchsep=2pt,hatchwidth=0.2pt,hatchangle=\hatchangle,linestyle=none]%
       (-0.5\goxunit,-0.5\goyunit)(0.5\goxunit,0.5\goyunit)%
       }%
\newcommand{\stone}[2][\relax]{%
 \setlength{\tmply}{-0.5\goxunit + 0.5ex}%
 \raisebox{\tmply}{\psset{unit=\goxunit}\begin{pspicture}(-0.5,-0)(0.5,1)%
   \pscircle[fillstyle=solid,fillcolor=#2](0,0.5){0.5}%
   \ifthenelse{\equal{#2}{black}}%
     {\rput(0,0.5){{\psset{linecolor=white}\color{white}\golabelformat{#1}}}}%
     {\rput(0,0.5){{\psset{linecolor=black}\color{black}\golabelformat{#1}}}}%
 \end{pspicture}}}

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