From 3f4907002980e385b2a84736f6ab63835e3e3681 Mon Sep 17 00:00:00 2001 From: Karl Berry Date: Mon, 24 Feb 2014 17:12:03 +0000 Subject: move {plain,generic}/misc/* files to new subdirs according to their upstreams git-svn-id: svn://tug.org/texlive/trunk@33039 c570f23f-e606-0410-a88d-b1316a301751 --- Master/texmf-dist/tex/plain/knuth-local/xepsf.tex | 219 ++++++++++++++++++++++ 1 file changed, 219 insertions(+) create mode 100644 Master/texmf-dist/tex/plain/knuth-local/xepsf.tex (limited to 'Master/texmf-dist/tex/plain/knuth-local/xepsf.tex') diff --git a/Master/texmf-dist/tex/plain/knuth-local/xepsf.tex b/Master/texmf-dist/tex/plain/knuth-local/xepsf.tex new file mode 100644 index 00000000000..b2b1a4605c2 --- /dev/null +++ b/Master/texmf-dist/tex/plain/knuth-local/xepsf.tex @@ -0,0 +1,219 @@ +% XEPSF.TEX macro file: +% Same as EPSF.TEX except that it uses the ExactBoundingBox put out by +% MetaPost under appropriate coding. +% +% (I made this unnecessary on 22 Jan 97 by changing MetaPost to +% output the exact bounding box when prologues<0. But I retain this +% file for compatibility with older uses of MetaPost, e.g. gbmac.tex.) +% +% 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. +% +% TeX macros to include an Encapsulated PostScript graphic. +% Works by finding the bounding box comment, +% calculating the correct scale values, and inserting a vbox +% of the appropriate size at the current position in the TeX document. +% +% To use with the center environment of LaTeX, preface the \epsffile +% call with a \leavevmode. (LaTeX should probably supply this itself +% for the center environment.) +% +% To use, simply say +% \input epsf % somewhere early on in your TeX file +% \epsfbox{filename.ps} % where you want to insert a vbox for a figure +% +% Alternatively, you can type +% +% \epsfbox[0 0 30 50]{filename.ps} % to supply your own BB +% +% which will not read in the file, and will instead use the bounding +% box you specify. +% +% The effect will be to typeset the figure as a TeX box, at the +% point of your \epsfbox command. By default, the graphic will have its +% `natural' width (namely the width of its bounding box, as described +% in filename.ps). The TeX box will have depth zero. +% +% You can enlarge or reduce the figure by saying +% \epsfxsize= \epsfbox{filename.ps} +% (or +% \epsfysize= \epsfbox{filename.ps}) +% instead. Then the width of the TeX box will be \epsfxsize and its +% height will be scaled proportionately (or the height will be +% \epsfysize and its width will be scaled proportiontally). The +% width (and height) is restored to zero after each use. +% +% A more general facility for sizing is available by defining the +% \epsfsize macro. Normally you can redefine this macro +% to do almost anything. The first parameter is the natural x size of +% the PostScript graphic, the second parameter is the natural y size +% of the PostScript graphic. It must return the xsize to use, or 0 if +% natural scaling is to be used. Common uses include: +% +% \epsfxsize % just leave the old value alone +% 0pt % use the natural sizes +% #1 % use the natural sizes +% \hsize % scale to full width +% 0.5#1 % scale to 50% of natural size +% \ifnum#1>\hsize\hsize\else#1\fi % smaller of natural, hsize +% +% If you want TeX to report the size of the figure (as a message +% on your terminal when it processes each figure), say `\epsfverbosetrue'. +% +\newread\epsffilein % file to \read +\newif\ifepsffileok % continue looking for the bounding box? +\newif\ifepsfbbfound % success? +\newif\ifepsfverbose % report what you're making? +\newdimen\epsfxsize % horizontal size after scaling +\newdimen\epsfysize % vertical size after scaling +\newdimen\epsftsize % horizontal size before scaling +\newdimen\epsfrsize % vertical size before scaling +\newdimen\epsftmp % register for arithmetic manipulation +\newdimen\pspoints % conversion factor +% +\pspoints=1bp % Adobe points are `big' +\epsfxsize=0pt % Default value, means `use natural size' +\epsfysize=0pt % ditto +% +\def\epsfbox#1{\global\def\epsfllx{72}\global\def\epsflly{72}% + \global\def\epsfurx{540}\global\def\epsfury{720}% + \def\lbracket{[}\def\testit{#1}\ifx\testit\lbracket + \let\next=\epsfgetlitbb\else\let\next=\epsfnormal\fi\next{#1}}% +% +\def\epsfgetlitbb#1#2 #3 #4 #5]#6{\epsfgrab #2 #3 #4 #5 .\\% + \epsfsetgraph{#6}}% +% +\def\epsfnormal#1{\epsfgetbb{#1}\epsfsetgraph{#1}}% +% +\def\epsfgetbb#1{% +% +% The first thing we need to do is to open the +% PostScript file, if possible. +% +\openin\epsffilein=#1 +\ifeof\epsffilein\errmessage{I couldn't open #1, will ignore it}\else +% +% Okay, we got it. Now we'll scan lines until we find one that doesn't +% start with %. We're looking for the bounding box comment. +% + {\epsffileoktrue \chardef\other=12 + \def\do##1{\catcode`##1=\other}\dospecials \catcode`\ =10 + \loop + \read\epsffilein to \epsffileline + \ifeof\epsffilein\epsffileokfalse\else +% +% We check to see if the first character is a % sign; +% if not, we stop reading (unless the line was entirely blank); +% if so, we look further and stop only if the line begins with +% `%%%ExactBoundingBox:'. +% + \expandafter\epsfaux\epsffileline:. \\% + \fi + \ifepsffileok\repeat + \ifepsfbbfound\else + \ifepsfverbose\message{No bounding box comment in #1; using defaults}\fi\fi + }\closein\epsffilein\fi}% +% +% Now we have to calculate the scale and offset values to use. +% First we compute the natural sizes. +% +\def\epsfclipstring{}% do we clip or not? If so, +\def\epsfclipon{\def\epsfclipstring{ clip}}% +\def\epsfclipoff{\def\epsfclipstring{}}% +% +\def\epsfsetgraph#1{% + \epsfrsize=\epsfury\pspoints + \advance\epsfrsize by-\epsflly\pspoints + \epsftsize=\epsfurx\pspoints + \advance\epsftsize by-\epsfllx\pspoints +% +% If `epsfxsize' is 0, we default to the natural size of the picture. +% Otherwise we scale the graph to be \epsfxsize wide. +% + \epsfxsize\epsfsize\epsftsize\epsfrsize + \ifnum\epsfxsize=0 \ifnum\epsfysize=0 + \epsfxsize=\epsftsize \epsfysize=\epsfrsize + \epsfrsize=0pt +% +% We have a sticky problem here: TeX doesn't do floating point arithmetic! +% Our goal is to compute y = rx/t. The following loop does this reasonably +% fast, with an error of at most about 16 sp (about 1/4000 pt). +% + \else\epsftmp=\epsftsize \divide\epsftmp\epsfrsize + \epsfxsize=\epsfysize \multiply\epsfxsize\epsftmp + \multiply\epsftmp\epsfrsize \advance\epsftsize-\epsftmp + \epsftmp=\epsfysize + \loop \advance\epsftsize\epsftsize \divide\epsftmp 2 + \ifnum\epsftmp>0 + \ifnum\epsftsize<\epsfrsize\else + \advance\epsftsize-\epsfrsize \advance\epsfxsize\epsftmp \fi + \repeat + \epsfrsize=0pt + \fi + \else \ifnum\epsfysize=0 + \epsftmp=\epsfrsize \divide\epsftmp\epsftsize + \epsfysize=\epsfxsize \multiply\epsfysize\epsftmp + \multiply\epsftmp\epsftsize \advance\epsfrsize-\epsftmp + \epsftmp=\epsfxsize + \loop \advance\epsfrsize\epsfrsize \divide\epsftmp 2 + \ifnum\epsftmp>0 + \ifnum\epsfrsize<\epsftsize\else + \advance\epsfrsize-\epsftsize \advance\epsfysize\epsftmp \fi + \repeat + \epsfrsize=0pt + \else + \epsfrsize=\epsfysize + \fi + \fi +% +% Finally, we make the vbox and stick in a \special that dvips can parse. +% + \ifepsfverbose\message{#1: width=\the\epsfxsize, height=\the\epsfysize}\fi + \epsftmp=10\epsfxsize \divide\epsftmp\pspoints + \vbox to\epsfysize{\vfil\hbox to\epsfxsize{% + \ifnum\epsfrsize=0\relax + \special{PSfile=#1 llx=\epsfllx\space lly=\epsflly\space + urx=\epsfurx\space ury=\epsfury\space rwi=\number\epsftmp + \epsfclipstring}% + \else + \epsfrsize=10\epsfysize \divide\epsfrsize\pspoints + \special{PSfile=#1 llx=\epsfllx\space lly=\epsflly\space + urx=\epsfurx\space ury=\epsfury\space rwi=\number\epsftmp\space + rhi=\number\epsfrsize \epsfclipstring}% + \fi + \hfil}}% +\global\epsfxsize=0pt\global\epsfysize=0pt}% +% +% We still need to define the tricky \epsfaux macro. This requires +% a couple of magic constants for comparison purposes. +% +{\catcode`\%=12 \global\let\epsfpercent=%\global\def\epsfbblit{%%ExactBoundingBox}}% +% +% So we're ready to check for `%%ExactBoundingBox:' and to grab the +% values if they are found. +% +\long\def\epsfaux#1#2:#3\\{\ifx#1\epsfpercent + \def\testit{#2}\ifx\testit\epsfbblit + \epsfgrab #3 . . . \\% + \epsffileokfalse + \global\epsfbbfoundtrue + \fi\else\ifx#1\par\else\epsffileokfalse\fi\fi}% +% +% Here we grab the values and stuff them in the appropriate definitions. +% +\def\epsfempty{}% +\def\epsfgrab #1 #2 #3 #4 #5\\{% +\global\def\epsfllx{#1}\ifx\epsfllx\epsfempty + \epsfgrab #2 #3 #4 #5 .\\\else + \global\def\epsflly{#2}% + \global\def\epsfurx{#3}\global\def\epsfury{#4}\fi}% +% +% We default the epsfsize macro. +% +\def\epsfsize#1#2{\epsfxsize} +% +% Finally, another definition for compatibility with older macros. +% +\let\epsffile=\epsfbox -- cgit v1.2.3