Meeting Pearls 3/Meeting_Pearls_III.iso/Pearls/texmf/inputs/misc/epsfig.sty

Text File | 1994-06-08 | 26.5 KB | 859 lines

\def\fileversion{v1.0}
\def\filedate{3 Dec 91}
\immediate\write16{Document style option `epsfig', \fileversion\space
<\filedate> (edited by SPQR)}
%%%--------------------------------------------------------------------
%%% psfig merged with EPSF =epsfig Release 1
%%%
%%% code rearranged by Sebastian Rahtz from work by
%%% Trevor Darrell; Tom Rokicki; Daniel Smith; H. Payne, Robert Russell
%%%
%%% This is a version of Darrell's `psfig' macros which are designed  only
%%% to be used with Rokicki's dvips program and the `epsf' macros (these
%%% are automaticaly included by the style file). I did this because the
%%% \special commands used by `epsf' appear to be more robust and
%%% portable than the raw \specials used by `psfig', but I preferred the
%%% psfig interface, and wanted to use some of its features which epsf
%%% did not offer (specifically, clipping to the BoundingBox). This system
%%% preserves the psfig interface, but mainly uses epsf macros to carry out
%%% the job. The user interface is identical to \psfig, but you just use
%%% \epsfig instead. Clipping and rotation uses the original psfig macros,
%%% as do specific settings of the Bounding Box in the call to the macro.
%%% I could not work out how to do rotation or clipping with the epsf macros.
%%%
%%% One behaviour which may confuse people is that setting width= and
%%% height will *not* force a change in the aspect ratio. If you need
%%% behaviour, use the \psfig macro instead of \epsfig. Rokicki's macros
%%% do not provide a way of doing the aspect ration stuff.
%%%
%%% If you *really* want old psfig behaviour regardless, use \psfig. It is
%%% still there. Some of the features have gone, however. \figurepath
%%% seemed redundant, since it could be controlled by the TEXINPUTS
%%% variable anyway. I am not sure whether rheight= etc work or not, I
%%% cannot remember the syntax!
%%%
%%% As an added feature, if a file cannot be found, a file called `file'.bb
%%% is searched for. This should simply contain a %%BoundingBox line. It is
%%% assumed that if this exists, then `file'.Z exists, and is a Unix
%%% compressed file. The macros then read the BB from `file'.bb, but insert
%%% "zcat `file'.Z" in the  output for dvips to interpret (don't worry, it
%%% knows about this). Saves a lot  of space! Actually, its more
%%% complicated than that; the string passed to dvips for file `foo.ps' is
%%% actually "zcat `texfind foo.ps.Z`", where `texfind' is assumed to be  a
%%% shell script which searches the TEXINPUTS path for `foo.ps.Z'. Such a
%%% script comes with dvips. Just alias it to `cat' if you have problems.
%%% If you are *not* on a Unix system and use this, deliberately or by
%%% mischance, you will have problems!
%%%
%%% This file can be included in a dumped format, or used as a LaTeX
%%% style file, or used in plain TeX. It does not load itself twice.
%%%
%%% Sebastian Rahtz December 1991 [e-mail]
%--------------------------------------------------------------------
%--------------------------------------------------------------------
%%% previous notes. this copy of psfig.tex inherited from version 1.7
%--------------------------------------------------------------------
%%% All psfig/tex software, documentation, and related files
%%% in this distribution of psfig/tex are
%%% Copyright 1987, 1988, 1991 Trevor J. Darrell
%
%%% Permission is granted for use and non-profit distribution of psfig/tex
%%% providing that this notice be clearly maintained. The right to
%%% distribute any portion of psfig/tex for profit or as part of any commercial
%%% product is specifically reserved for the author(s) of that portion.
%%%
%%% Thanks to Greg Hager (GDH) and Ned Batchelder for their contributions
%%% to this project.
%%%--------------------------------------------------------------------------
%%% GDH 7/26/87 -- changed so that it first looks in the local directory,
%%% then in a specified global directory for the ps file.
%%% SPQR 12/91 removed that last change. it follows TEXINPUTS anyway
%%% RPR 6/25/91 -- changed so that it defaults to user-supplied name if
%%% boundingbox info is specified, assuming graphic will be created by
%%% print time.
%%% SPQR 12/91 removed that last change. use LaTeX error message instead
%%% SPQR 12/91 -- `no file found' produces LaTeX error message.
%%%                If you recover from that the file name is set in draft
%%%                mode in place of the file.
%%%
%%% Modified by J. Daniel Smith on 9 October 1990 to accept the
%%% %%BoundingBox: comment with or without a space after the colon.  Stole
%%% file reading code from Tom Rokicki's EPSF.TEX file (see below).
%%% --- SPQR 12.91 removed most of this to use epsf directly
%%%
%%% More modifications by J. Daniel Smith on 29 March 1991 to allow the
%%% the included PostScript figure to be rotated.  The amount of
%%% rotation is specified by the "angle=" parameter of the \epsfig command.
%%%
%%% Modified by Robert Russell on June 25, 1991 to allow users to specify
%%% .ps filenames which don't yet exist, provided they explicitly provide
%%% boundingbox information via the \epsfig command. Note: This will only work
%%% if the "file=" parameter follows all four "bb???=" parameters in the
%%% command. This is due to the order in which psfig interprets these params.
%%% ---- SPQR 12.91 removed all this
%%%
%%% 3 Jul 1991    JDS    check if file already read in once
%%%
%%% Modified by H. Payne on 9 October 1991 to allow rotation through
%%% arbitrary angles, not just angles in the first quadrant.
%--------------------------------------------------------------------------
%%%
%%% check to see if macros already loaded in (maybe some other file says
%%% "\input epsfig") ...
%%% from a suggestion by [e-mail] to allow
%%% loading as a style file:
\edef\epsfigRestoreAt{\catcode`@=\number\catcode`@\relax}
\catcode`\@=11\relax
\ifx\typeout\undefined%
    \newwrite\@unused
    \def\typeout#1{{\let\protect\string\immediate\write\@unused{#1}}}
\fi
\ifx\undefined\epsfig%
\else
    \typeout{EPSFIG --- already loaded}\endinput
\fi
%
%
% we try to put a box round space of missing figures. plain TeX
% doesn't have an easy command, so just ignore it
\ifx\undefined\fbox\def\fbox#1{#1}\fi
%%%
%%% we need Rokicki's EPSF macros anyway, unless they are already loaded
%
\ifx\undefined\epsfbox\input epsf\fi
%
%% SPQR 12.91 handling of errors using standard LaTeX error
%% mechanism. In case we are plain TeX we first define the
%% error routines...
\ifx\undefined\@latexerr
    \newlinechar`\^^J
    \def\@spaces{\space\space\space\space}
    \def\@latexerr#1#2{%
    \edef\@tempc{#2}\expandafter\errhelp\expandafter{\@tempc}%
    \typeout{Error. \space see a manual for explanation.^^J
     \space\@spaces\@spaces\@spaces Type \space H <return> \space for
     immediate help.}\errmessage{#1}}
\fi
%------------------------
%% a couple of LaTeX error messages
\def\@whattodo{You tried to include a PostScript figure which
cannot be found^^JIf you press return to carry on anyway,^^J
The failed name will be printed in place of the figure.^^J
or type X to quit}
\def\@whattodobb{You tried to include a PostScript figure which
has no^^Jbounding box, and you supplied none.^^J
If you press return to carry on anyway,^^J
The failed name will be printed in place of the figure.^^J
or type X to quit}
%------------------------
%
\newwrite\@unused
%------------------------------------------------------------------------
%------------------------------------------------------------------------
%%% @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}}
%%%
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% file reading stuff from epsf.tex
%%%   EPSF.TEX macro file:
%%%   Written by Tomas Rokicki of Radical Eye Software, 29 Mar 1989.
%%%   Revised by Don Knuth, 3 Jan 1990.
%%%   Revised by Tomas Rokicki to accept bounding boxes with no
%%%      space after the colon, 18 Jul 1990.
%%%   Portions modified/removed for use in PSFIG package by
%%%      J. Daniel Smith, 9 October 1990.
%%%   Just the bit which knows about (atend) as a BoundingBox
%
%%%    hacked back a bit by SPQR 12/91
%
\long\def\epsfaux#1#2:#3\\{\ifx#1\epsfpercent
   \def\testit{#2}\ifx\testit\epsfbblit
    \@atendfalse
        \epsf@atend #3 . \\%
    \if@atend
       \if@verbose
        \typeout{epsfig: found `(atend)'; continuing search}
       \fi
        \else
        \epsfgrab #3 . . . \\%
            \global\no@bbfalse
        \fi
   \fi\fi}%
%
%%% Determine if the stuff following the %%BoundingBox is `(atend)'
%%% J. Daniel Smith.  Copied from \epsf@grab above.
%
\def\epsf@atendlit{(atend)}
%
\def\epsf@atend #1 #2 #3\\{%
   \def\epsf@tmp{#1}\ifx\epsf@tmp\empty
      \epsf@atend #2 #3 .\\\else
   \ifx\epsf@tmp\epsf@atendlit\@atendtrue\fi\fi}


%%% End of file reading stuff from epsf.tex
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% trigonometry stuff from "trig.tex"
\chardef\letter = 11
\chardef\other = 12

\newif \ifdebug %%% turn me on to see TeX hard at work ...
\newif\ifc@mpute %%% don't need to compute some values
\newif\if@atend
\c@mputetrue % but assume that we do

\let\then = \relax
\def\r@dian{pt }
\let\r@dians = \r@dian
\let\dimensionless@nit = \r@dian
\let\dimensionless@nits = \dimensionless@nit
\def\internal@nit{sp }
\let\internal@nits = \internal@nit
\newif\ifstillc@nverging
\def \Mess@ge #1{\ifdebug \then \message {#1} \fi}

{ %%% Things that need abnormal catcodes %%%
    \catcode `\@ = \letter
    \gdef \nodimen {\expandafter \n@dimen \the \dimen}
    \gdef \term #1 #2 #3%
           {\edef \t@ {\the #1}%%% freeze parameter 1 (count, by value)
        \edef \t@@ {\expandafter \n@dimen \the #2\r@dian}%
                   %%% freeze parameter 2 (dimen, by value)
        \t@rm {\t@} {\t@@} {#3}%
           }
    \gdef \t@rm #1 #2 #3%
           {{%
        \count 0 = 0
        \dimen 0 = 1 \dimensionless@nit
        \dimen 2 = #2\relax
        \Mess@ge {Calculating term #1 of \nodimen 2}%
        \loop
        \ifnum    \count 0 < #1
        \then    \advance \count 0 by 1
            \Mess@ge {Iteration \the \count 0 \space}%
            \Multiply \dimen 0 by {\dimen 2}%
            \Mess@ge {After multiplication, term = \nodimen 0}%
            \Divide \dimen 0 by {\count 0}%
            \Mess@ge {After division, term = \nodimen 0}%
        \repeat
        \Mess@ge {Final value for term #1 of
                \nodimen 2 \space is \nodimen 0}%
        \xdef \Term {#3 = \nodimen 0 \r@dians}%
        \aftergroup \Term
           }}
    \catcode `\p = \other
    \catcode `\t = \other
    \gdef \n@dimen #1pt{#1} %%% throw away the ``pt''
}

\def \Divide #1by #2{\divide #1 by #2} %%% just a synonym

\def \Multiply #1by #2%%% allows division of a dimen by a dimen
       {{%%% should really freeze parameter 2 (dimen, passed by value)
    \count 0 = #1\relax
    \count 2 = #2\relax
    \count 4 = 65536
    \Mess@ge {Before scaling, count 0 = \the \count 0 \space and
            count 2 = \the \count 2}%
    \ifnum    \count 0 > 32767 %%% do our best to avoid overflow
    \then    \divide \count 0 by 4
        \divide \count 4 by 4
    \else    \ifnum    \count 0 < -32767
        \then    \divide \count 0 by 4
            \divide \count 4 by 4
        \else
        \fi
    \fi
    \ifnum    \count 2 > 32767 %%% while retaining reasonable accuracy
    \then    \divide \count 2 by 4
        \divide \count 4 by 4
    \else    \ifnum    \count 2 < -32767
        \then    \divide \count 2 by 4
            \divide \count 4 by 4
        \else
        \fi
    \fi
    \multiply \count 0 by \count 2
    \divide \count 0 by \count 4
    \xdef \product {#1 = \the \count 0 \internal@nits}%
    \aftergroup \product
       }}

\def\r@duce{\ifdim\dimen0 > 90\r@dian \then   % sin(x) = sin(180-x)
        \multiply\dimen0 by -1
        \advance\dimen0 by 180\r@dian
        \r@duce
        \else \ifdim\dimen0 < -90\r@dian \then  % sin(x) = sin(360+x)
        \advance\dimen0 by 360\r@dian
        \r@duce
        \fi
        \fi}

\def\Sine#1%
       {{%
    \dimen 0 = #1 \r@dian
    \r@duce
    \ifdim\dimen0 = -90\r@dian \then
       \dimen4 = -1\r@dian
       \c@mputefalse
    \fi
    \ifdim\dimen0 = 90\r@dian \then
       \dimen4 = 1\r@dian
       \c@mputefalse
    \fi
    \ifdim\dimen0 = 0\r@dian \then
       \dimen4 = 0\r@dian
       \c@mputefalse
    \fi
%
    \ifc@mpute \then
            % convert degrees to radians
        \divide\dimen0 by 180
        \dimen0=3.141592654\dimen0
%
        \dimen 2 = 3.1415926535897963\r@dian %%% a well-known constant
        \divide\dimen 2 by 2 %%% we only deal with -pi/2 : pi/2
        \Mess@ge {Sin: calculating Sin of \nodimen 0}%
        \count 0 = 1 %%% see power-series expansion for sine
        \dimen 2 = 1 \r@dian %%% ditto
        \dimen 4 = 0 \r@dian %%% ditto
        \loop
            \ifnum    \dimen 2 = 0 %%% then we've done
            \then    \stillc@nvergingfalse
            \else    \stillc@nvergingtrue
            \fi
            \ifstillc@nverging %%% then calculate next term
            \then    \term {\count 0} {\dimen 0} {\dimen 2}%
                \advance \count 0 by 2
                \count 2 = \count 0
                \divide \count 2 by 2
                \ifodd    \count 2 %%% signs alternate
                \then    \advance \dimen 4 by \dimen 2
                \else    \advance \dimen 4 by -\dimen 2
                \fi
        \repeat
    \fi
            \xdef \sine {\nodimen 4}%
            %\typeout {Sin: sine of #1 \space is \sine \space}%
       }}

%%% Now the Cosine can be calculated easily by calling \Sine:
%%%  cos(x) = sin(90-x)
\def\Cosine#1{\ifx\sine\UnDefined\edef\Savesine{\relax}\else
                     \edef\Savesine{\sine}\fi
    {\dimen0=#1\r@dian\multiply\dimen0 by -1
     \advance\dimen0 by 90\r@dian
     \Sine{\nodimen 0}
     \xdef\cosine{\sine}
     %\typeout {Cosine: cos of \space \nodimen 0 \space is \cosine \space}%
     \xdef\sine{\Savesine}}}
%%% end of trig stuff
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\def\psdraft{\def\@psdraft{0}}
\def\psfull{\def\@psdraft{100}}
\psfull
%
\newif\if@draftbox
\def\psnodraftbox{\@draftboxfalse}
\@draftboxtrue
%
\newif\if@noisy
\def\pssilent{\@noisyfalse}
\def\psnoisy{\@noisytrue}
\@noisyfalse

%%% 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@angle
\newif\if@clip
\newif\if@verbose
\def\@p@@sclip#1{\@cliptrue}
\newif\if@prologfile
\@prologfiletrue
%
%%% if this is true, the original Darrell macros and specials are used
\newif\ifuse@psfig
%
\def\@p@@sfile#1{%
\def\@p@sfile{NO FILE: #1}%
\def\@p@sfilefinal{NO FILE: #1}%
    \openin1=#1
    \ifeof1\closein1
        \openin1=#1.bb
            \ifeof1\closein1
                \if@bbllx\if@bblly\if@bburx\if@bbury% added 6/91 Rob Russell
                          \def\@p@sfile{#1}%
                          \def\@p@sfilefinal{#1}%
                    \fi\fi\fi
                \else
                    \@latexerr{ERROR! PostScript file #1 not found}\@whattodo
                    \@p@@sbbllx{100bp}
                    \@p@@sbblly{100bp}
                    \@p@@sbburx{200bp}
                    \@p@@sbbury{200bp}
                    \def\@p@scost{200}
                \fi
            \else
                \closein1%
                \edef\@p@sfile{#1.bb}%
                \edef\@p@sfilefinal{"`zcat `texfind #1.Z`"}%
            \fi
    \else\closein1
            \edef\@p@sfile{#1}%
            \edef\@p@sfilefinal{#1}%
    \fi%
}
 % alternative syntax: figure=
\let\@p@@sfigure\@p@@sfile
%
\def\@p@@sbbllx#1{
        %\typeout{bbllx is #1}
        \use@psfigtrue
        \@bbllxtrue
        \dimen100=#1
        \edef\@p@sbbllx{\number\dimen100}
}
\def\@p@@sbblly#1{
        %\typeout{bblly is #1}
        \use@psfigtrue
        \@bbllytrue
        \dimen100=#1
        \edef\@p@sbblly{\number\dimen100}
}
\def\@p@@sbburx#1{
        %\typeout{bburx is #1}
        \use@psfigtrue
        \@bburxtrue
        \dimen100=#1
        \edef\@p@sbburx{\number\dimen100}
}
\def\@p@@sbbury#1{
        %\typeout{bbury is #1}
        \use@psfigtrue
        \@bburytrue
        \dimen100=#1
        \edef\@p@sbbury{\number\dimen100}
}
\def\@p@@sheight#1{
        \@heighttrue
        \epsfysize=#1
        \dimen100=#1
           \edef\@p@sheight{\number\dimen100}
        %\typeout{Height is \@p@sheight}
}
\def\@p@@swidth#1{
        %\typeout{Width is #1}
        \@widthtrue
        \epsfxsize=#1
        \dimen100=#1
        \edef\@p@swidth{\number\dimen100}
}
\def\@p@@srheight#1{
        %\typeout{Reserved height is #1}
        \@rheighttrue
        \dimen100=#1
        \edef\@p@srheight{\number\dimen100}
}
\def\@p@@srwidth#1{
        %\typeout{Reserved width is #1}
        \@rwidthtrue
        \dimen100=#1
        \edef\@p@srwidth{\number\dimen100}
}
\def\@p@@sangle#1{
        %\typeout{Rotation is #1}
        \use@psfigtrue
        \@angletrue
%        \dimen100=#1
        \edef\@p@sangle{#1} %\number\dimen100}
}
\def\@p@@ssilent#1{
        \@verbosefalse
}
\def\@cs@name#1{\csname #1\endcsname}
\def\@setparms#1=#2,{\@cs@name{@p@@s#1}{#2}}
%
%%% initialize the defaults (size the size of the figure)
%
\def\ps@init@parms{
        \@bbllxfalse \@bbllyfalse
        \@bburxfalse \@bburyfalse
        \@heightfalse \@widthfalse
        \@rheightfalse \@rwidthfalse
        \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@sangle{0}
        \def\@p@sfile{}
        \def\@p@scost{10}
        \use@psfigfalse
        \def\@sc{}
        \if@noisy
            \@verbosetrue
        \else
            \@verbosefalse
        \fi
        \@clipfalse
}
%
%%% Go through the options setting things up.
%
\def\parse@ps@parms#1{
         \@psdo\@psfiga:=#1\do
           {\expandafter\@setparms\@psfiga,}}
%
%%% Compute bb height and width
%
\newif\ifno@bb
\def\bb@missing{
    \epsfgetbb{\@p@sfile}
        \ifepsfbbfound\no@bbfalse\else\no@bbtrue\bb@cull\epsfllx\epsflly\epsfurx\epsfury\fi
}
\def\bb@cull#1#2#3#4{
    \dimen100=#1 bp\edef\@p@sbbllx{\number\dimen100}
    \dimen100=#2 bp\edef\@p@sbblly{\number\dimen100}
    \dimen100=#3 bp\edef\@p@sbburx{\number\dimen100}
    \dimen100=#4 bp\edef\@p@sbbury{\number\dimen100}
    \no@bbfalse
}

\newdimen\p@intvaluex
\newdimen\p@intvaluey
\newdimen\@ffsetvalue
\newdimen\x@ffsetvalue
\newdimen\y@ffsetvalue

%%% Calculate \@ffsetvalue = (#2 - #1) \sin\theta
%%%  The sine of the angle is already stored in \sine.
%%%  If (#2-#1)>0, then the result is zero in the 2nd and 4th quadrants, and
%%%  if (#2-#1)<0, then the result is zero in the 1st and 3rd quadrants.
%%%  Only the x coordinate needs an offset in the 1st and 3rd quadrants,
%%%  and only the y coordinate needs an offset otherwise.

\def\compute@offset#1#2{{\dimen0=#1 sp\dimen1=#2 sp
            \advance\dimen1 by -\dimen0
            \dimen1=\sine\dimen1
            \dimen0=\cosine\dimen1
            \ifdim\dimen0<0sp \dimen1=0sp \fi
            \global\@ffsetvalue=\dimen1}}

%%% rotate point (#1,#2) about (0,0).
%%% The sine and cosine of the angle are already stored in \sine and
%%% \cosine.  The result is placed in (\p@intvaluex, \p@intvaluey).
\def\rotate@#1#2{{\dimen0=#1 sp\dimen1=#2 sp
%%%                calculate x' = x \cos\theta - y \sin\theta
          \global\p@intvaluex=\cosine\dimen0
          \dimen3=\sine\dimen1
          \global\advance\p@intvaluex by -\dimen3
%%%         calculate y' = x \sin\theta + y \cos\theta
          \global\p@intvaluey=\sine\dimen0
          \dimen3=\cosine\dimen1
          \global\advance\p@intvaluey by \dimen3
          }}
%%% rotate point (#1,#2) about the point (#3,#4), finding the x value.
%%% The sine and cosine of the angle are already stored in \sine and
%%% \cosine.  The result is placed in \p@intvaluex
%\def\rotate@x#1#2#3#4{{\dimen0=#1 sp
%            \dimen1=#2 sp
%            \dimen2=#3 sp
%            \dimen4=#4 sp
%            \advance\dimen0 by -\dimen3
%            \dimen0=\cosine\dimen0
%            \advance\dimen4 by -\dimen2
%            \dimen4=\sine\dimen4
%               \global\p@intvaluex=\dimen0
%               \global\advance\p@intvaluex by \dimen4
%            \global\advance\p@intvaluex by \dimen3
%
%}}
\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
        \ifno@bb \bb@missing \fi
        \ifno@bb
            \@latexerr{ERROR! cannot locate BB!}\@whattodobb
            \@p@@sbbllx{100bp}
            \@p@@sbblly{100bp}
            \@p@@sbburx{200bp}
            \@p@@sbbury{200bp}
            \def\@p@scost{200}
        \fi
        %\typeout{BB: \@p@sbbllx, \@p@sbblly, \@p@sbburx, \@p@sbbury}
        \if@angle
            \Sine{\@p@sangle}\Cosine{\@p@sangle}
            \compute@offset{\@p@sbblly}{\@p@sbbury}
            \x@ffsetvalue=\@ffsetvalue
            % Note that arguments are reversed to
            %  give a negative interval:
            \compute@offset{\@p@sbburx}{\@p@sbbllx}
            \y@ffsetvalue=\@ffsetvalue

            \rotate@{\@p@sbbllx}{\@p@sbblly}
            \advance\p@intvaluex by -\x@ffsetvalue
            \advance\p@intvaluey by -\y@ffsetvalue
            \edef\@p@sbbllx{\number\p@intvaluex}
            \edef\@p@sbblly{\number\p@intvaluey}

            \rotate@{\@p@sbburx}{\@p@sbbury}
            \advance\p@intvaluex by \x@ffsetvalue
            \advance\p@intvaluey by \y@ffsetvalue
            \edef\@p@sbburx{\number\p@intvaluex}
            \edef\@p@sbbury{\number\p@intvaluey}
%        swap LL and UR if necessary
%\typeout{rotated BB: \@p@sbbllx, \@p@sbblly, \@p@sbburx, \@p@sbbury}
            {
             \count0=\@p@sbbllx \count1=\@p@sbblly
              \count2=\@p@sbburx \count3=\@p@sbbury
             \dimen0=\@p@sbbllx sp\dimen1=\@p@sbblly sp
              \dimen2=\@p@sbburx sp\dimen3=\@p@sbbury sp
             \dimen203=\dimen2 \advance\dimen203 by -\dimen0
             \dimen204=\dimen3 \advance\dimen204 by -\dimen1
             \ifdim\dimen203<0sp
                  \count203=\count2 \count2=\count0
                  \count0=\count203
                  \global\edef\@p@sbbllx{\number\count0}
                  \global\edef\@p@sbburx{\number\count2}
             \fi
             \ifdim\dimen204<0sp
                   \count204=\count3
                   \count3=\count1
                   \count1=\count204
                   \global\edef\@p@sbblly{\number\count1}
                   \global\edef\@p@sbbury{\number\count3}
             \fi
            }
%\typeout{after swap BB: \@p@sbbllx, \@p@sbblly, \@p@sbburx, \@p@sbbury}
        \fi
        \count203=\@p@sbburx
        \count204=\@p@sbbury
        \advance\count203 by -\@p@sbbllx
        \advance\count204 by -\@p@sbblly
        \edef\@bbw{\number\count203}
        \edef\@bbh{\number\count204}
        %\typeout{ bbh = \@bbh, bbw = \@bbw }
}
%
%%% \in@hundreds performs #1 * (#2 / #3) correct to the hundreds,
%    then leaves the result in @result
%
\def\in@hundreds#1#2#3{\count240=#2 \count241=#3
             \count100=\count240    % 100 is first digit #2/#3
             \divide\count100 by \count241
             \count101=\count100
             \multiply\count101 by \count241
             \advance\count240 by -\count101
             \multiply\count240 by 10
             \count101=\count240    %101 is second digit of #2/#3
             \divide\count101 by \count241
             \count102=\count101
             \multiply\count102 by \count241
             \advance\count240 by -\count102
             \multiply\count240 by 10
             \count102=\count240    % 102 is the third digit
             \divide\count102 by \count241
             \count200=#1\count205=0
             \count201=\count200
            \multiply\count201 by \count100
             \advance\count205 by \count201
             \count201=\count200
            \divide\count201 by 10
            \multiply\count201 by \count101
            \advance\count205 by \count201
            %
             \count201=\count200
            \divide\count201 by 100
            \multiply\count201 by \count102
            \advance\count205 by \count201
            %
             \edef\@result{\number\count205}
}
\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}
}
\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}
}
\def\compute@handw{
        \if@height
            \if@width
            \else
                \compute@wfromh
            \fi
        \else
            \if@width
                \compute@hfromw
            \else
                \edef\@p@sheight{\@bbh}
                \edef\@p@swidth{\@bbw}
            \fi
        \fi
}
\def\compute@resv{
        \if@rheight \else \edef\@p@srheight{\@p@sheight} \fi
        \if@rwidth \else \edef\@p@srwidth{\@p@swidth} \fi
        %\typeout{rheight = \@p@srheight, rwidth = \@p@srwidth}
}
%
%%% Compute any missing values
\def\compute@sizes{
    \compute@bb
    \compute@handw
    \compute@resv
}
%
%%% \epsfig
%%% usage : \epsfig{file=, height=, width=, bbllx=, bblly=, bburx=, bbury=,
%            rheight=, rwidth=, angle=, clip=}
%
%%% "clip=" is a switch and takes no value, but the `=' must be present.
%------------------------------------------------------------------
%%% by the way, possible parameters to the PSfile= command in dvips are:
%%%                    llx
%%%                    lly
%%%                    urx
%%%                    ury
%%%                    rwi
%    hoffset    The horizontal offset (default 0)
%    voffset    The vertical offset (default 0)
%    hsize    The horizontal clipping size (default 612)
%    vsize    The vertical clipping size (default 792)
%    hscale    The horizontal scaling factor (default 100)
%    vscale    The vertical scaling factor (default 100)
%    angle    The rotation (default 0)
%------------------------------------------------------------------
\def\psfig#1{\vbox {
    % do a zero width hard space so that a single
    % \epsfig in a centering enviornment will behave nicely
    %{\setbox0=\hbox{\ }\ \hskip-\wd0}
    %
    \ps@init@parms
    \parse@ps@parms{#1}
    %
    \ifnum\@p@scost<\@psdraft
        \typeout{[\@p@sfilefinal]}
        \if@verbose
            \typeout{epsfig: using PSFIG macros}
        \fi
        \psfig@method
    \else
        \epsfig@draft
    \fi
}}

\def\epsfig#1{\vbox {
    % do a zero width hard space so that a single
    % \epsfig in a centering enviornment will behave nicely
    %{\setbox0=\hbox{\ }\ \hskip-\wd0}
    %
    \ps@init@parms
    \parse@ps@parms{#1}
    %
    \ifnum\@p@scost<\@psdraft
        \typeout{[\@p@sfilefinal]}
        \if@clip\use@psfigtrue\fi
        \if@angle\use@psfigtrue\fi
        \ifuse@psfig
            \if@verbose
                \typeout{epsfig: using PSFIG macros}
            \fi
            \psfig@method
        \else
            \if@verbose
                \typeout{epsfig: using EPSF macros}
            \fi
            \epsf@method
        \fi
    \else
        \epsfig@draft
    \fi
}}


\def\epsf@method{%
    \epsfgetbb{\@p@sfile}%
    \epsfsetgraph{\@p@sfilefinal}
}
\def\psfig@method{%
    \compute@sizes
    \special{ps::[begin]  \@p@swidth \space \@p@sheight \space%
    \@p@sbbllx \space \@p@sbblly \space%
    \@p@sbburx \space \@p@sbbury \space%
    startTexFig \space }%
    \if@angle
        \special {ps:: \@p@sangle \space rotate \space}
    \fi
    \if@clip
        \if@verbose
            \typeout{(clipped to BB) }
        \fi
        \special{ps:: doclip \space }%
    \fi
    \special{ps: plotfile \@p@sfilefinal \space }%
    \special{ps::[end] endTexFig \space }%
    % Create the vbox to reserve the space for the figure%
    \vbox to \@p@srheight true sp{\hbox to \@p@srwidth true sp{\hss}\vss}
}
%
% draft figure, just reserve the space and print the
% path name.
\def\epsfig@draft{
\compute@sizes
\if@draftbox
    % Verbose draft: print file name in box
    % NOTE: fbox is a LaTeX command!
    \hbox{\fbox{\vbox to \@p@srheight true sp{
    \vss\hbox to \@p@srwidth true sp{ \hss \@p@sfilefinal \hss }\vss
    }}}
\else
    % Non-verbose draft
    \vbox to \@p@srheight true sp{%
    \vss\hbox to \@p@srwidth true sp{\hss}\vss}
\fi
}
\epsfigRestoreAt