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% $Header: /usr/home/levy/texts/geomsty/RCS/geompsfi.sty,v 1.18 95/12/06 13:40:51 levy Exp $

% This is geompsfig.sty, based on psfig.tex by Trevor Darrell (as
% modified by Stefan Bechtoslheim).
%
% It works with Latex and plain TeX (normally under the name geompsfi.tex).
% Thanks to Ket Richter for working out the changes for Plain tex.

% Copyright 1991, 1992, 1993 Silvio Levy

% This file is part of the Geom Latex style files.  It is distributed in
% the hope that it will be useful, but WITHOUT ANY WARRANTY.  The author
% makes no representation as to its suitability for any purpose.

% Permission is granted for use and non-profit distribution of this 
% file provided that this notice is clearly maintained. The right to
% distribute this file for profit or as part of any commercial
% product is specifically reserved for the author.  If you make
% changes to this file you cannot distribute it under the same name,
% but you can distribute it under a different name provided it is not
% for profit of as part of a commercial product, and provided that the
% copyright line above and this notice are clearly maintained.

% This version assumes that dimensions read from a PostScript file or
% from a .lab file are in bp (big points).  Dimensions found in the
% source TeX file (as in \psfig{...,height=2in}) are true dimensions
% (that is, are not scaled pt -> bp).  This is all as it should be.

\edef\atcatcode{\the\catcode`\@}
\catcode`@=11 

\newif\ifoldlabels \oldlabelsfalse
\expandafter\ifx\csname @ifundefined\endcsname\relax 
\long\def\@ifundefined#1#2#3{\expandafter\ifx\csname
  #1\endcsname\relax#2\else#3\fi}
\def\@iden#1{#1}
%\newdimen\@tempdima
\alloc@1\dimen\dimendef\insc@unt\@tempdima
\def\@warning#1{\message{Warning: #1.}}
\fi

\@ifundefined{ps@init}{}{\endinput}

\@ifundefined{hyperactivelabels}{\let\hyperactivelabels\relax}{}

\newif\if@topspecials %false for Rokicki's dvips: \special is at bottom of box
                      % true for dvitps, dvi2ps

\input driver.chg % driver-dependent definitions (generally a symlink)

\newcount\psfc@a
\newcount\psfc@b
\newcount\psfc@c
\newcount\psfc@d
\newcount\psfc@e
\newcount\psfc@f
\newcount\psfc@g
\newcount\psfc@h
\newcount\psfc@i
\newcount\psfc@j
\newcount\psscale@count
\newtoks\psfigtoks@
% A dimension register for temporarily storing a dimension in
% \@pDimenToSpNumber.
\newdimen\psfig@dimen
%
%\newwrite\@unused
%\def\typeout#1{{\let\protect\string\immediate\write\@unused{#1}}}

% Identifying message is here.
% \typeout{psfig/tex 1.4.gcg / TeXPS}\fi
%
% @psdo control structure -- similar to Latex @for.
% I redefined these with different names so that psfig can
% be used with TeX as well as LaTeX, and so that it will not 
% be vunerable to future changes in LaTeX's internal
% control structure.
\def\@nnil{\@nil}
\def\@empty{}
\def\@psdonoop#1\@@#2#3{}
\def\@psdo#1:=#2\do#3{\edef\@psdotmp{#2}\ifx\@psdotmp\@empty \else
    \expandafter\@psdoloop#2,\@nil,\@nil\@@#1{#3}\fi}
\def\@psdoloop#1,#2,#3\@@#4#5{\def#4{#1}\ifx #4\@nnil \else
       #5\def#4{#2}\ifx #4\@nnil \else#5\@ipsdoloop #3\@@#4{#5}\fi\fi}
\def\@ipsdoloop#1,#2\@@#3#4{\def#3{#1}\ifx #3\@nnil 
       \let\@nextwhile=\@psdonoop \else
      #4\relax\let\@nextwhile=\@ipsdoloop\fi\@nextwhile#2\@@#3{#4}}
\def\@tpsdo#1:=#2\do#3{\xdef\@psdotmp{#2}\ifx\@psdotmp\@empty \else
    \@tpsdoloop#2\@nil\@nil\@@#1{#3}\fi}
\def\@tpsdoloop#1#2\@@#3#4{\def#3{#1}\ifx #3\@nnil 
       \let\@nextwhile=\@psdonoop \else
      #4\relax\let\@nextwhile=\@tpsdoloop\fi\@nextwhile#2\@@#3{#4}}
% 
\def\psdraft{%
  \def\@psdraft{0}
  %\typeout{draft level now is \@psdraft \space.}
}
\def\psfull{%
  \def\@psdraft{100}
  %\typeout{draft level now is \@psdraft \space.}
}
\psfull
\newif\if@prologfile
\newif\if@postlogfile
\newif\if@noisy
\def\pssilent{%
  \@noisyfalse
}
\def\psnoisy{%
  \@noisytrue
}
%\psnoisy
\pssilent
% These are for the option list: 
%  a specification of the form a = b maps to calling \@p@@sa{b}.
\newif\if@bbllx
\newif\if@bblly
\newif\if@bburx
\newif\if@bbury
\newif\if@height
\newif\if@width
\newif\if@rheight
\newif\if@rwidth
\newif\if@clip
\newif\if@proportional
\newif\if@scale
\newif\if@verbose
\def\@p@@sclip#1{\@cliptrue}
\def\@p@@sproportional#1{\@proportionaltrue}
\def\@p@@sfile#1{% 
  %\typeout{file is #1}
  \def\@p@sfile{#1.ps}% 
  \def\@labfile{#1.lab}% 
}
\def\@p@@sfigure#1{% 
  \def\@p@sfile{#1.ps}% 
  \def\@labfile{#1.lab}% 
}
% \@pDimenToSpNumber
% ==================
% Convert a dimension into scaled points.
% #1: the name of macro which will expand to the dimension in
%     scaled points, without the unit 'sp' though, i.e. as a pure
%     integer.
% #2: the dimension (not a dimension register, use
%     \the if dimension is stored in a dimension register).
\def\@pDimenToSpNumber #1#2{% 
  \psfig@dimen = #2\relax
  \edef#1{\number\psfig@dimen}%
}
\def\@p@@sbbllx#1{% 
  %\typeout{bbllx is #1}
  \@bbllxtrue
  \@pDimenToSpNumber{\@p@sbbllx}{#1}% 
}
\def\@p@@sbblly#1{% 
  %\typeout{bblly is #1}
  \@bbllytrue
  \@pDimenToSpNumber{\@p@sbblly}{#1}% 
}
\def\@p@@sbburx#1{%
  %\typeout{bburx is #1}
  \@bburxtrue
  \@pDimenToSpNumber{\@p@sbburx}{#1}% 
}
\def\@p@@sbbury#1{%
  %\typeout{bbury is #1}
  \@bburytrue
  \@pDimenToSpNumber{\@p@sbbury}{#1}% 
}
\def\@p@@sheight#1{%
  \@heighttrue
  \@pDimenToSpNumber{\@p@sheight}{#1}% 
  %\typeout{Height is \@p@sheight}
}
\def\@p@@swidth#1{%
  %\typeout{Width is #1}
  \@widthtrue
  \@pDimenToSpNumber{\@p@swidth}{#1}% 
}
\def\@p@@srheight#1{%
  %\typeout{Reserved height is #1}
  \@rheighttrue
  \@pDimenToSpNumber{\@p@srheight}{#1}% 
}
\def\@p@@srwidth#1{%
  %\typeout{Reserved width is #1}
  \@rwidthtrue
  \@pDimenToSpNumber{\@p@srwidth}{#1}% 
}
\def\@p@@ssilent#1{% 
  \@verbosefalse
}
\def\@p@@sscale #1{% 
  \def\@p@scale{#1}%
  \@scaletrue
}

\def\@p@@sprolog#1{\@prologfiletrue\def\@prologfileval{#1}}
\def\@p@@spostlog#1{\@postlogfiletrue\def\@postlogfileval{#1}}
\def\@cs@name#1{\csname #1\endcsname}
\def\@setparms#1=#2,{\def\@tempa{#2}\ifx\@tempa\@empty
  \@warning{bad syntax (missing = or extra comma) in argument of \string\psfig}%
  \else\@@setparms#1=#2,\fi}
\def\@@setparms#1=#2=,{\@cs@name{@p@@s#1}{#2}}
%
% Initialize the defaults.
%
\def\ps@init@parms{%
  \@bbllxfalse \@bbllyfalse
  \@bburxfalse \@bburyfalse
  \@heightfalse \@widthfalse
  \@rheightfalse \@rwidthfalse
  \@scalefalse
  \def\@p@sbbllx{}\def\@p@sbblly{}%
  \def\@p@sbburx{}\def\@p@sbbury{}%
  \def\@p@sheight{}\def\@p@swidth{}%
  \def\@p@srheight{}\def\@p@srwidth{}%
  \def\@p@sfile{}%
  \def\@labfile{}%
  \def\@p@scost{10}%
  \def\@sc{}%
  \@prologfiletrue
  \@postlogfilefalse
  \@clipfalse
  \@proportionalfalse
  \if@noisy
    \@verbosetrue
  \else
    \@verbosefalse
  \fi
}
%
% Go through the options setting things up.
%
\def\parse@ps@parms#1{%
   \@psdo\@psfiga:=#1\do
     {\expandafter\@setparms\@psfiga=,}% 
}

\newif\ifno@file
\newif\ifno@bb
\newif\ifnot@eof
\newif\if@bbmatch
\newif\if@crematch
\newif\ifmathematica
\newif\ifillustrator
\newread\ps@stream
\newread\lab@stream
\newcount\@linecount
\newcount\maxheaderlines
\maxheaderlines=100

%
% Scan header of file, looking for ``BoundingBox'' and ``Creator'' lines
%
\def\scan@header{%
  \openin\ps@stream=\@p@sfile
  \openin\lab@stream=\@labfile
  \ifeof\ps@stream
    \relax %needed so the \@warning won't cause trouble
    \@warning{cannot open \@p@sfile}
    \no@filetrue
  \else
    \not@eoftrue
    \ifno@bb \@bbmatchfalse \else \@bbmatchtrue \fi
    \@crematchfalse
    \catcode`\%=12
    \catcode`\:=12 % in case punctuation is active (e.g., under french.sty)
    \@linecount=\maxheaderlines
    \loop
      \read\ps@stream to \line@in
      \global\psfigtoks@=\expandafter{\line@in}
      \ifeof\ps@stream \not@eoffalse \fi
      %\typeout{ looking at :: \the\psfigtoks@ }
      \if@bbmatch \else \@bbtest{\psfigtoks@} \fi
      \if@crematch \else \@cretest{\psfigtoks@} \fi
      \if@crematch \if@bbmatch \not@eoffalse \fi \fi
      \advance\@linecount-1
      \ifnum\@linecount=0 \not@eoffalse \fi
    \ifnot@eof \repeat
  \fi
  \catcode`\%=14
}  

% '% ' becomes a regular character for a very short time.
{ 
  \catcode`\%=12
  \catcode`\:=12
  \gdef\@bbtest#1{\expandafter\@bb@\the#1%%BoundingBox:\@bbtest\@bb@}
  \global\long\def\@bb@#1%%BoundingBox:#2#3\@bb@{\ifx\@bbtest#2
    \else\@bbmatchtrue\expandafter\bb@cull\the\psfigtoks@\fi}

  \gdef\@cretest#1{\expandafter\@cre@\the#1%%Creator:\@cretest\@cre@}
  \global\long\def\@cre@#1%%Creator:#2#3\@cre@{\ifx\@cretest#2
    \else\@crematchtrue\@mathtest{\psfigtoks@}\@illtest{\psfigtoks@}\fi}
}

%
% Takes action if ``Creator'' line contains ``Mathematica'' or ``Illustrator''
%
\def\@mathtest#1{\expandafter\@math@\the#1Mathematica\@mathtest\@math@}
\long\def\@math@#1Mathematica#2#3\@math@{\ifx\@mathtest#2
    \else\mathematicatrue \fi}

\def\@illtest#1{\expandafter\@ill@\the#1Illustrator\@illtest\@ill@}
\long\def\@ill@#1Illustrator#2#3\@ill@{\ifx\@illtest#2
    \else\illustratortrue \fi}

\def\bb@cull#1:{\expandafter\bb@@cull\@iden}
\long\def\bb@@cull#1 #2 #3 #4 {%
  \@pDimenToSpNumber{\@p@sbbllx}{#1bp}%
  \@pDimenToSpNumber{\@p@sbblly}{#2bp}%
  \@pDimenToSpNumber{\@p@sbburx}{#3bp}%
  \@pDimenToSpNumber{\@p@sbbury}{#4bp}%
  \no@bbfalse
}

% Compute \@bbw and \@bbh, the width and height of the
% bounding box.
\def\compute@bb{%
  \no@bbfalse
  \if@bbllx \else \no@bbtrue \fi
  \if@bblly \else \no@bbtrue \fi
  \if@bburx \else \no@bbtrue \fi
  \if@bbury \else \no@bbtrue \fi
  \scan@header 
  \ifno@file
  \else
    \ifno@bb
      \@warning{no bounding box found in \@p@sfile}
      \no@filetrue
    \else
  % Now compute the size of the bounding box.
      \psfc@c=\@p@sbburx
      \psfc@b=\@p@sbbury
      \advance\psfc@c by -\@p@sbbllx
      \advance\psfc@b by -\@p@sbblly
      \edef\@bbw{\number\psfc@c}
      \edef\@bbh{\number\psfc@b}
      %\typeout{\string\compute@bb: bbh = \@bbh, bbw = \@bbw}
    \fi
  \fi
}

%
% \in@hundreds performs #1 * (#2 / #3) correct to the hundreds,
%    then leaves the result in \@result.
%
% note: #3 should be a big number, or a multiple of 10.
%
\def\in@hundreds #1#2#3{% 
  \psfc@g=#2
  \psfc@d=#3
  \divide\psfc@d 10
  \psfc@a=\psfc@g  % First two digits #2/#3.
  \divide\psfc@a by \psfc@d
  \psfc@f=\psfc@a
  \multiply\psfc@f by \psfc@d
  \advance\psfc@g by -\psfc@f
  \multiply\psfc@g by 10
  \psfc@f=\psfc@g  % Third digit of #2/#3.
  \divide\psfc@f by \psfc@d
  \psfc@j=\psfc@f
  \multiply\psfc@j by \psfc@d
  \advance\psfc@g by -\psfc@j
  \multiply\psfc@g by 10
  \psfc@j=\psfc@g  % Third digit.
  \divide\psfc@j by \psfc@d
  \psfc@h=#1\psfc@i=0
  \psfc@e=\psfc@h
  \multiply\psfc@e by \psfc@a
  \advance\psfc@i by \psfc@e
  \psfc@e=\psfc@h
  \divide\psfc@e by 10
  \multiply\psfc@e by \psfc@f
  \advance\psfc@i by \psfc@e
  %
  \psfc@e=\psfc@h
  \divide\psfc@e by 100
  \multiply\psfc@e by \psfc@j
  \advance\psfc@i by \psfc@e
  \divide\psfc@i 10
  %
  \edef\@result{\number\psfc@i}
}
% Scale a value #1 by the current scaling factor and reassign the new
% scaled value.
\def\@ScaleInHundreds #1{% 
  \in@hundreds{#1}{\@p@scale}{100}%
  \edef#1{\@result}% 
}
% 
%
% Compute width from height.
\def\compute@wfromh{%
  % computing : width = height * (bbw / bbh)
  \in@hundreds{\@p@sheight}{\@bbw}{\@bbh}%
  %\typeout{ \@p@sheight * \@bbw / \@bbh, = \@result }
  \edef\@p@swidth{\@result}%
  %\typeout{w from h: width is \@p@swidth}%
}
%
% Compute height from width.
%
\def\compute@hfromw{%
  % computing : height = width * (bbh / bbw)
  \in@hundreds{\@p@swidth}{\@bbh}{\@bbw}%
  %\typeout{ \@p@swidth * \@bbh / \@bbw = \@result }
  \edef\@p@sheight{\@result}%
  %\typeout{h from w : height is \@p@sheight}%
}
%
% Compute height and width when both are given and proportionality
% must be preserved.
%
\def\compute@minhw{%
  \in@hundreds{\@p@swidth}{\@bbh}{\@bbw}%
  \ifnum\@p@sheight<\@result
    \in@hundreds{\@p@sheight}{\@bbw}{\@bbh}%
    \edef\@p@swidth{\@result}%
  \else
    \edef\@p@sheight{\@result}%
  \fi
}
%
% Compute height and width, i.e. \@p@sheight and \@p@swidth.
%
\def\compute@handw{%
  % If height is given.
  \if@height 
    % If width is given
    \if@width
      \if@proportional
        \compute@minhw
      \fi
    \else
      % Height, no width: compute width.
      \compute@wfromh
    \fi
  \else 
    % No height.
    \if@width
      % Width is given, no height though: compute it.
      \compute@hfromw
    \else
      % Neither width no height is give.
      \edef\@p@sheight{\@bbh}
      \edef\@p@swidth{\@bbw}
    \fi
  \fi
}
% Compute the amount of space to reserve. Unless defined
% using rheight and rwidth when \psfig is called, these values
% default to \@p@sheight and \@p@swidth.
\def\compute@resv{%
  \if@rheight \else \edef\@p@srheight{\@p@sheight} \fi
  \if@rwidth \else \edef\@p@srwidth{\@p@swidth} \fi
}
%
%
% \psfig
% ======
% usage: \psfig{file=, height=, width=, bbllx=, bblly=, bburx=, bbury=,
%      rheight=, rwidth=, clip=, scale=, proportional=}
%
% "clip=" and "proportional=" are switches and take no value, 
% but the `=' must be present.
%
\def\partest{\par}
\def\psfig#1{% 
  \vbox {%
    \offinterlineskip
    \ps@init@parms
    \parse@ps@parms{#1}%
    % Compute any missing sizes.
    \compute@bb
                \ifno@file\vbox{\hbox{{\tt\@p@sfile} not found}}%
                \else
    \compute@handw
    \compute@resv
    \if@scale
      %\if@verbose \typeout{psfig: scaling by \@p@scale}\fi
      % We now scale the width and height as reported to the PS printer.
      \@ScaleInHundreds{\@p@swidth}% 
      \@ScaleInHundreds{\@p@sheight}% 
      \@ScaleInHundreds{\@p@srwidth}% 
      \@ScaleInHundreds{\@p@srheight}% 
    \fi
    %
    \ifnum\@p@scost<\@psdraft
      %\if@verbose \typeout{psfig: including \@p@sfile \space}\fi
      \if@topspecials\do@specials\fi
      % Create a vbox to reserve the proper amount of space for the figure.
      \vbox to \@p@srheight sp{%
        \hbox to \@p@srwidth sp{}%
        \vss
      }%
      \if@topspecials\else\do@specials\fi
      \ifeof\lab@stream
        %\if@verbose\typeout{psfig: no file \@labfile \space  found}\fi
      \else{%
        \hyperactivelabels
        \not@eoftrue
        \loop
          \read\lab@stream to \line@in \ifx\line@in\partest\else\line@in\fi
          \ifeof\lab@stream \not@eoffalse \fi
        \ifnot@eof \repeat
      }\fi
    \else
      % Draft mode: reserve the space for the figure and print the path name.
      \vbox to \@p@srheight sp{%
        \hbox to \@p@srwidth sp{%
          \if@verbose
            \@p@sfile
          \fi
        }%
        \vss
      }%
    \fi
  \fi
  }%
}

\def\do@specials{\ps@init\ps@begin
  \if@clip 
     %\if@verbose \typeout{(clip)} \fi 
    \ps@clip \fi
  \if@prologfile \ps@prolog \fi \ps@include \if@postlogfile \ps@postlog \fi
  \ps@end}

\newbox\label@box
\newdimen\x@lab \newdimen\y@lab
\newdimen\x@aux \newdimen\y@aux
\newdimen\hair\hair=3pt
\def\setlabel#1#2#3#4#5{%
  \setbox\label@box\hbox{$#1$}%
  \x@lab.5\wd\label@box \x@lab#4\x@lab
  \y@lab.5\ht\label@box\advance\y@lab.5\dp\label@box \y@lab#5\y@lab 
% rotate lab clockwise by 22.5 degrees to get aux
  \x@aux.92388\x@lab \advance\x@aux.38268\y@lab
  \y@aux-.38268\x@lab \advance\y@aux.92388\y@lab
% choose 
  \ifdim\x@aux>0pt
    \ifdim\y@aux>0pt
      \ifdim\x@aux>\y@aux\advance\x@lab.7071\hair\advance\y@lab.7071\hair
      \else\advance\y@lab\hair\fi
    \else
      \ifdim\x@aux>-\y@aux\advance\x@lab\hair
      \else\advance\x@lab.7071\hair\advance\y@lab-.7071\hair\fi
    \fi
  \else
    \ifdim\y@aux>0pt
      \ifdim\x@aux>-\y@aux\advance\x@lab-.7071\hair\advance\y@lab.7071\hair
      \else\advance\x@lab-\hair\fi
    \else
      \ifdim\x@aux>\y@aux\advance\y@lab-\hair
      \else
        \ifdim\x@aux<0pt 
           \advance\x@lab-.7071\hair\advance\y@lab-.7071\hair\fi
      \fi
    \fi
  \fi
  \advance\x@lab.5\wd\label@box
  \advance\y@lab.5\ht\label@box\advance\y@lab.5\dp\label@box
  \x@aux=#2bp \ifoldlabels \else \advance\x@aux by -\@p@sbbllx sp \fi
  \y@aux=#3bp \ifoldlabels \else \advance\y@aux by -\@p@sbblly sp \fi
  \in@hundreds{\x@aux}{\@p@swidth}{\@bbw}
  \edef\@xpos{\@result}
  \in@hundreds{\y@aux}{\@p@sheight}{\@bbh}
  \edef\@ypos{\@result}
  \vbox to 0pt{%
    \vss\hbox to\@p@srwidth sp{\hskip \@xpos sp \hskip-\x@lab 
    \box\label@box\hss}\vskip \@ypos sp \vskip-\y@lab}}

\catcode`@=\atcatcode

% $Log:	geompsfi.sty,v $
%Revision 1.18  95/12/06  13:40:51  levy
%made geompsfi.tex work (\ifx\@ifundefined was wrong!)
%
%Revision 1.17  1994/06/23  04:36:58  levy
%added \ifoldlabels for compatibility with behavior before version 1.11
%
%Revision 1.16  1994/04/29  00:19:21  levy
%combined with geompsfi.tex
%
%Revision 1.16  1994/04/29  00:03:40  levy
%leave plenty of space so patch geompsfi.tex works
%
%Revision 1.15  1994/04/03  07:07:57  levy
%removed hair correction when x@lab and y@lab are both zero
%
%Revision 1.14  1993/09/16  22:22:38  levy
%\catcode`\:=12 % in case punctuation is active (e.g., under french.sty)
%
%Revision 1.13  1993/08/27  23:04:27  levy
%removed "true" from PS dimensions (so it works with \magnifications)
%
%Revision 1.12  93/08/16  12:28:46  levy
%\ifundefined\hyperactivelabels
%
%Revision 1.11  93/07/19  02:17:24  levy
%.lab coordinates should be world coordinates
%
%Revision 1.10  93/03/05  10:59:38  levy
%error message when arguments of \psfig are incorrect
%
%Revision 1.9  1993/01/13  15:50:36  levy
%expressed things in bp (correctly)
%
%Revision 1.8  1993/01/10  20:56:04  levy
%inhundreds -> inthousands
%
%Revision 1.6  92/07/13  11:12:40  levy
%better error message when bounding box not found
%
%Revision 1.5  92/06/15  22:05:22  levy
%proportional scaling
%
%Revision 1.4  92/06/10  13:03:45  levy
%extend header from 10 to 15 lines
%
%Revision 1.3  92/06/10  12:41:14  levy
%scan header for "Creator" line
%
%Revision 1.2  92/04/07  09:09:17  levy
%*** empty log message ***
%
% Revision 1.1  92/03/31  14:12:38  levy
% Initial revision