% DVIPS version % included are the changes required to make it work with DVIPS % It should be modifiable to any other decent driver too % This is the complete texgraph macros ... for use with the INRS/Beebe % Postscript driver % LaTeX version % Graphics macros for TeX using POSTCRIPT % ----- Needs mod to count characters in special ... some drivers have an % input limit of 500 characters in a \special % =============================================================== % THIS VERSION IS FOR USE with a PostScript Driver with % \p@sfile to signal a file name % \p@sinline to signal inline PostScript % processes \specials and dvi commands in order. % does not place a (save restore) pair about a \special. % % \printhv defines scale/directions for inline Postscript % \filehv defines scale/directions for file Postscript % % Both INRS's modification of Beebe's DVIALW and ArborText's PostScript % drivers satisfy these minimal requirements. % It assumes that the underlying units are 300 pix/in % Standard PostScript Conventions % This is easily changed by changing the \hpix or \vpix % It assumes that x,y are in the "normal" up/left direction. % File inclusions require the existence of a bounding box for the correct % spacing to be left. % =============================== % Most arguments, excepting file names, are delimited by spaces. Thus % braces { .... } will usually only occur around inserted text ... which % still must be followed by a space or end of line. % ====================== \catcode`\@=11 % =============== Driver Signal Forms ======================= %\xdef\p@sfile{ps: } % file signal INRS DVIALW \xdef\p@sfile{ps: plotfile } % file signal DVIPS \xdef\p@sinline{ps:: } % inline signal DVIPS ... INRS DVIALW % This translates the direction of the page if the printer assumptions % are different than TeX. The values should be +-1. \gdef\printhv #1 #2 {\gdef\p@hv{ #1 #2 scale }} \gdef\filehv #1 #2 {\gdef\f@schv{ #1 #2 scale }} \gdef\rtdir #1 {\gdef\r@tdir{ #1 }} % neg or nothing PS has no pos % ============== LateX support ================= \newenvironment{TeXgraph}{\btg}{\etg} % This is the only change between the LateX and INRSTeX versions % ======= Simple Plotfile support =========== % These are vanilla forms for inserting an encapsulated PostScript file % or creating a centered graphics environment. % \centergraph needs to be very \long \long\gdef\centergraph#1{\hbox to \hsize{\hss\vbox{#1\vgraphskip}\hgraphskip\hss}} \gdef\centerplotfile#1{\centergraph{\btg\includefile #1 \etg}} % if you use the Latex command to create the new texgraph environment, % then you will automatically be "inside" Texgraph. This % means that you should use such commands as % \includefile \incscmvfile \incscfile % ========= error messages ========= % \language=0 -- English, 1 - French \ifnum \language=0 \message{<< WARNING -- TeXGraph needs DVIPS >>} \xdef\bbmess{Searching for BoundingBox } \xdef\incfile{Graphics file} \xdef\badincfile{Size/Format Error in Graphics File} \xdef\noincfile{Missing Graphics File} \else \message{<< AVERTISSMENT -- TeXGraph a besoin du DVIPS >>} \xdef\bbmess{Searching for BoundingBox } \xdef\incfile{Graphics file} \xdef\badincfile{Size/Format Error in Graphics File} \xdef\noincfile{Missing Graphics File} \fi % ===== debugging code ===== % will send out specials as messages \gdef\dmess #1{} \gdef\bmess #1{} % ======== \global\newif ======= % Plain defines the \newif as a local variable. We need a global % version if TeXgraph is to be brought in while inside a group. % This is a simpler, but less elegant version of \newif %#1 is \if<..> #2 -...true #3 ...false \gdef\gnewif#1#2#3{\global\let#1=\iffalse \gdef#2{\let#1=\iftrue}\relax \gdef#3{\let#1=\iffalse}} % ======== TeXGraph Macros ========== % Postcript allows for arbitrary translation, scaling, rotation and clipping. % This version saves the current segment scale(s), unit scale(s), rotation % and translation and painfully computes and retores the correct form after % a segment exit. The reason for this is that Postcript can stack only one % CTM, text needs to have correct rotation and translation but default % scaling ... % It would be preferable not to convert any of the units. However, it is % necessary to know the maximum excursions. Since the PS currentpoint is % not accessible to TeX, we must keep it ourselves. % Since negative numbers can be used both maximum and minimum excursions % are required. % ====== begin -- end graphics ======= % The maximum and minimum extent in the h and v direction is recorded % and is accessible % at the end of a \btg \etg pair (in points). The same value, in pixels is accessible at % all times \newcount\maxhpospix \newcount\maxvpospix \newcount\minhpospix \newcount\minvpospix \newdimen\hgraphsize \newdimen\vgraphsize \gdef\vgraphskip{\vskip\vgraphsize} \gdef\hgraphskip{\hskip\hgraphsize} \gdef\beginTeXGraphics{\t@exgraphdef \i@ncgdepth \vbox\bgroup\offinterlineskip \h@pos=0 \global\maxhpospix=\h@pos \global\minhpospix=\h@pos \v@pos=0 \global\maxvpospix=\v@pos \global\minvpospix=\v@pos \h@segoff=\h@pos \v@segoff=\v@pos \edef\o@form{}\ifnum\g@depth=1 \p@sinit \fi \p@sset % PS initialization \s@save} % \s@save saves the initialization for the special output. % \g@save saves some local condition \gdef\endTeXGraphics{\g@raphout\egroup\maxhvpos\p@srestore \d@ecgdepth } \global\let\btg=\beginTeXGraphics \global\let\etg=\endTeXGraphics \global\let\btg=\beginTeXGraphics \global\let\etg=\endTeXGraphics % ========== TeXGraph Nesting Depth ========== \newcount\g@depth \global\g@depth=0 % initializes at zero \gdef\i@ncgdepth{\global\advance\g@depth by 1 } \gdef\d@ecgdepth{\global\advance\g@depth by -1 } % =========== Complete Graph Scaling =============== % There is a separate scaling for the horizontal, vertical, and text \gdef\grscale h:#1 v:#2 {\gdef\h@grsc{#1}\gdef\v@grsc{#1}\e@xtend {\o@form}{#1 #2 scale }} \gdef\tgrscale #1 {\e@xtend{\o@form}{#1 #1 scale }} % text scale h and v the same % ======== PostScript initialization ========= % \gdef\t@exgrdictdef{/td 50 dict def } \gdef\t@exgrdictinit{ td begin /mv {moveto} def /lv {lineto} def /st {stroke} def /np {newpath} def /sl {setlinewidth} def /sd {setdash} def /rt {rotate} def /gs {gsave} def /gr {grestore} def /tr {translate} def /cp {closepath} def /sg {setgray} def /chv {currentpoint} def /cv {curveto} def /slc {setlinecap} def /slj {setlinejoin} def /sc {scale} def /at {neg atan rt} def /mx {mv gs chv tr} def % \h@vinit end } % ----- initial point move ... driver dependent ----- \gdef\Xpos{Xp\the\g@depth\b@} \gdef\Ypos{Yp\the\g@depth\b@} \gdef\h@vinit{ chv /\Ypos exch def /\Xpos exch def } \gdef\h@vset{\t@rhv \p@hv } \gdef\m@vhv{ \Xpos \Ypos mv } % INRS \gdef\t@rhv{ \Xpos \Ypos tr } % INRS \gdef\t@rneghv{ \Xpos neg \Ypos neg tr } % INRS \gdef\p@sinit{\edef\e@form{\special{\p@sinline \t@exgrdictdef \t@exgrdictinit}} \gdef\p@sset{\special{\p@sinline td begin \h@vinit gs \t@rhv \p@hv end }}\e@form\dmess{\e@form}} % ======== PostScript termination ========= \gdef\p@srestore{\edef\e@form{\special{\p@sinline grestore }}\e@form \dmess{\e@form}} % resets to entry into TeXgraph and recovers memory %========= macros for converting dimensions/units ========= % --------- \box0 must not be void ---------- \global\setbox0=\hbox{} %default values \gdef\graphdim#1 {\gdef\g@dim{#1\relax}} %pixels /dim unit \newcount\h@pix % sp/pixel \gdef\hpix#1/#2 {\wd0=1true#2\relax \h@pix=\wd0 \divide\h@pix by #1 \relax} \newcount\v@pix % sp/pixel \gdef\vpix#1/#2 {\wd0=1true#2\relax \v@pix=\wd0 \divide\v@pix by #1 \relax} % Assumes #1 is dimension #2 is count in pixels, #3 sp/pix, #4 scalefactor (real) % #2 is returned \gdef\gendimtopix#1#2#3#4{\wd0=#1\dimen0=#4\wd0\relax \wd0=\dimen0 #2=\wd0 \divide #2 by #3\relax} % #1 is returned, #5 -\global or {} \gdef\genpixtopt#1#2#3#4#5{\multiply #2 by #3\relax\wd0=#2sp #5#1=#4\wd0\relax} % ---------- Converts maxpix to maxdim removes offset ----- \gdef\maxhvpos{\global\advance\maxhpospix by -\minhpospix\relax \genpixtopt{\hgraphsize}{\maxhpospix}{\h@pix}{\h@grsc}{\global}\relax \global\advance\maxvpospix by -\minvpospix\relax \genpixtopt{\vgraphsize}{\maxvpospix}{\v@pix}{\v@grsc}{\global}} % ======== The vector offsets my be relative or absolute ===== \gnewif{\ifr@elpos}{\r@elpostrue}{\r@elposfalse} %default is absolute \gdef\absoluteposition{\r@elposfalse} \gdef\relativeposition{\r@elpostrue} \global\let\abspos=\absoluteposition \global\let\relpos=\relativeposition \global\let\absolute=\absoluteposition % historical \global\let\relative=\relativeposition % historical % ====== update #1 by #2 r@elpos to #3, #4 is max #5 is min======= \gdef\u@pdate#1#2#3#4#5{\ifr@elpos \advance #1 by #2\else \advance #2 by #3\relax #1=#2\fi \ifnum #1>#4\global #4=#1\fi \ifnum #1<#5\global #5=#1\fi } \gdef\h@update #1{\u@pdate{\h@pos}{#1}{\h@segoff}{\maxhpospix}{\minhpospix}} \gdef\v@update #1{\u@pdate{\v@pos}{#1}{\v@segoff}{\maxvpospix}{\minvpospix}} % === pixel position r@elpos to initial offset starting position \newcount\h@pos \h@pos=0 \newcount\v@pos \v@pos=0 \newcount\r@ang \r@ang=0 % 1000 times degrees ? % ===== Check for pen up moves only ===== % penup/down are used to determine whether a line needs to be stroked % when a line pattern or penwidth is changed. \gnewif{\ifp@down}{\p@downtrue}{\p@downfalse} % ===== present segment origin and rotation ========== \newcount\h@segoff \newcount\v@segoff \newcount\r@segoff % 1000 times degrees \gdef\beginsegment{\g@raphout\begingroup\s@eginit} % segment initialization is a trifle messy \gdef\s@eginit{\h@segoff =\h@pos \v@segoff=\v@pos} % PS has the concept of a path that is either % completed with a "stroke" or "fill" ... stroking % at the end or beginning of a segment, the special is written out. This is % to ensure that the input order of the graphics reflects what entities are % on top of what others. Further it is assumed that the origin does not % change during an entire \btg ...\etg section. This means that every special % must first move to the point where the previous one left off. \s@save % defines \s@restore that restores, in case they had been modified, the line % width, pattern, hpos, vpos, ... and any future things that need restoration. % all graphic specials are ended with a stroke (st), whether it needs it not. % we need a special form to force a space after a \the\nnn form or \p@w \gdef\b@{ } \gdef\endsegment{\g@raphout\endgroup \edef\o@form{}\s@save} \gdef\s@pout #1#2{\edef\e@form{\special{#1\s@restore\o@form#2}}\dmess{\e@form}\e@form \edef\o@form{}\s@save} %\h@vset if there is a move before each special \gdef\g@raphout{\ifx\empty\o@form \else \ifp@down \s@pout{\p@sinline td begin }{ st end }\fi\fi\p@downfalse} \global\let\graphout=\g@raphout % ====== Segment and units scaling ======== % The units in any segment may be scaled arbitrarily. A unit scale is local % to a segment but affects enclosed segments unless specifically overidden % in that segment. In addition there is a graph or segment scale. This % scaling factor is accumulative and is applied on top of the unit scale. % These two scaling factors allow for a segment to be designed in nominal % units, scaled to a nominal size and then be affected by relative scaling % of an entire graph or segment. In addition there is a relative/absolute % scale switch that allows for any segment to be unaffected by a graphscale. % \u@nitsc -- present unit scale, \s@egsc -- present segment scale % \g@rsc -- present graphscale ... changes when ever either of the former do. % present implementation does not allow separate v h scaling % ------ Relative/Absolute Scale ------ \gnewif{\ifr@elscale}{\r@elscaletrue}{\r@elscalefalse} \gdef\absolutescale{\r@elscalefalse} \gdef\relativescale{\r@elscaletrue} \global\let\abssc=\absolutescale \global\let\relsc=\relativescale % ----- unit scale ----- \gdef\unitscale#1 {\edef\u@nitsc{#1}\newgraphscale} \global\let\graphscale=\unitscale % Historical % ----- Segment Scale ----- \gdef\segmentscale#1 {\ifr@elscale \realmult{#1}{\s@egsc}{\s@egsc}\else \edef\s@egsc{#1}\fi \newgraphscale} % ---- Graph Scale -------- % This changes whenever either of the above change \gdef\newgraphscale{\realmult{\u@nitsc}{\s@egsc}{\g@rsc}} % ------ "Real" Multiplication -------- % These functions use the fact that a box dimension may be scaled by % a real. The final step is to "clean" off the pt on the resulting dim % Cleans off the pt in a dimension ... pt has catcode 12 {\catcode`\p=12 \catcode`\t=12 \gdef\c@lean#1pt{\edef\cx{#1}}} % #1 and #2 are multiplicands #3 is a command to capture result \gdef\realmult#1#2#3{\wd0=1pt\dimen0=#1\wd0\wd0=\dimen0\dimen0=#2\wd0 \edef\R@M{\the\dimen0}\expandafter\c@lean\R@M\edef#3{\cx}} \gdef\realadd#1#2#3{\dimen0=#1pt\dimen2=#2pt\advance\dimen0by\dimen2 \edef\R@M{\the\dimen0}\expandafter\c@lean\R@M\edef#3{\cx}} % -------- Command to convert nominal values to pixels ------ % #1 is a decimal number, #2 must be a count, #3 is sp/pix % This includes all scalings \gdef\grdimtopix#1#2#3{\gendimtopix{#1\g@dim}{#2}{#3}{\g@rsc}} % ------- special forms to update positions ------ \gdef\i@h#1{\grdimtopix{#1}{\d@umc}{\h@pix}\h@update{\d@umc}} \gdef\i@v#1{\grdimtopix{#1}{\d@umc}{\v@pix}\v@update{\d@umc}} \gdef\h@num#1#2{\grdimtopix{#1}{#2}{\h@pix}} \gdef\v@num#1#2{\grdimtopix{#1}{#2}{\v@pix}} %dummy variables \newcount\d@uma \newcount\d@umb \newcount\d@umc \newcount\d@umd \newcount\d@ume % ====== end macros for converting dimensions % ======== Some more Utility Macros ======== % ======== recursive macros ======== \gdef\e@xtend #1#2{\let\d@x=#1\edef #1{\d@x #2}} \xdef\s@pex{} \xdef\s@pin{ } \gdef\s@pexpand #1 #2!{\e@xtend{\s@pex}{#1\s@pin}\edef\t@x{#2}\ifx\t@x\empty\relax \else \s@pexpand #2!\fi} % ========== A Do Loop Construction ========= % \do for \od % This is a specialization of the \loop in Plain. \newcount\d@count \gdef\do #1 for #2\od{\d@count=#2\loop #1 \ifnum\d@count>1\advance \d@count by -1\repeat} % ========= Graphics specials ======= \xdef\o@form{} \gdef\penwidth #1 {\h@num{#1}{\d@umc}\edef\p@w{\the\d@umc}\ifp@down \g@save \e@xtend{\o@form}{st \g@restore } \else \e@xtend{\o@form}{\p@w\b@ sl }\fi} \gdef\linecap #1 {\edef\s@lc{#1}\ifp@down \g@save \e@xtend{\o@form}{st \g@restore } \else \e@xtend{\o@form}{\s@lc\b@ slc }\fi} \gdef\linejoin #1 {\edef\s@lj{#1}\ifp@down \g@save \e@xtend{\o@form}{st \g@restore } \else \e@xtend{\o@form}{\s@lj\b@ slj }\fi} \gdef\lpatt p:#1 {\edef\v@p{#1 0}\ifp@down \g@save \e@xtend{\o@form}{st \g@restore } \else \e@xtend{\o@form}{\v@p\b@ sd }\fi} % ==== parameters are in units of the nominal dimension \g@dim ====== \gdef\p@move #1#2#3{\i@h{#1}\i@v{#2}\e@xtend{\o@form}{\the\h@pos\b@ \the\v@pos\b@ #3 }} \gdef\lvec h:#1 v:#2 {\p@move{#1}{#2}{lv}\p@downtrue} %draws a line \gdef\move h:#1 v:#2 {\p@move{#1}{#2}{mv}} %moves % ====== a general vector with dimensions in pixels ====== % ========= General pixel dim vector ========== \gdef\lpix h:#1 v:#2 f:#3 {\e@xtend{\o@form}{ #1 #2 #3 }} %============== puts TeX text at this position % These are pure TeX macros that use \h@pos and \v@pos for orientation % Text may be put horizontally (left/right) or vertically (down/up) % ======== sp form of \h@pos and \v@pos respectively ======== \newdimen\t@hpos \newdimen\t@vpos \gdef\s@ettpos{\d@umc=\h@pos \genpixtopt{\t@hpos}{\d@umc}{\h@pix}{}{}\relax \d@umc=\v@pos \genpixtopt{\t@vpos}{\d@umc}{\v@pix}{}{}\relax} % any one of nine reference point may be specified on the % TeX box. This is Vertical T,C,B and Horizontal L,C,R % The actual box is 0 height and width. \newbox\t@box % #1 LCR default/error L #2 TCB default/error T #3 text -- in hbox % Sets the box glues \lhglue \rhglue \tvglue \bvglue % #1 x/h ref, #2 v/y ref \gdef\textref h:#1 v:#2 {\ifx#1R\edef\lhglue{\hss}\edef\rhglue{}\else \ifx#1C\edef\lhglue{\hss}\edef\rhglue{\hss}\else \edef\lhglue{}\edef\rhglue{\hss}\fi\fi \ifx#2B\edef\tvglue{\vss}\edef\bvglue{}\else \ifx#2C\edef\tvglue{\vss}\edef\bvglue{\vss}\else \edef\tvglue{}\edef\bvglue{\vss}\fi\fi} \global\let\tboxref=\textref \newcount\h@oldmaxpos \newcount\v@oldmaxpos %needed to save max pos when texgraph is inside an h/vtext % ========== assumes driver location at initial \btg entry ======== % % #1 text #2 - begin rotation form #3 - end rotation form \long\gdef\m@text#1#2#3{\g@raphout\h@oldmaxpos=\maxhpospix\relax \v@oldmaxpos=\maxvpospix\relax \edef\h@oldgrsc{\h@grsc}\edef\v@oldgrsc{\v@grsc}\s@ettpos \setbox\t@box=\vbox{\normalbaselines \vskip\t@vpos\hbox{\hskip\t@hpos \t@init{#2}\relax \vbox to 0pt{\normalbaselines \tvglue\hbox to 0pt{\lhglue\hbox{#1}\rhglue }\bvglue}}}\relax \dp\t@box=0pt\ht\t@box=0pt\wd\t@box=0pt \box\t@box \t@fin{#3} \global\maxhpospix=\h@oldmaxpos\relax \global\maxvpospix=\v@oldmaxpos\relax \xdef\h@grsc{\h@oldgrsc}\edef\v@grsc{\v@oldgrsc}} % saves maxh(v)pospix on stack % ========== PS text initializations and terminations =========== \gdef\t@init#1{\special{\p@sinline td begin \h@vinit gr gs \t@rhv #1 \t@rneghv end }} \gdef\t@fin#1{\special{\p@sinline td begin \h@vinit gr gs \m@vhv \t@rhv \p@hv end }} % .... special test %\gdef\t@init#1{} %\gdef\t@fin#1{} % ... end special test \long\gdef\htext #1 {\m@text{#1}{}{}} \long\gdef\vtext #1 {\m@text{#1}{ 90 \r@tdir rt }{}} \long\gdef\rtext d:#1 t:#2 {\m@text{#2}{ #1 \r@tdir rt }{}} \long\gdef\rstext d:#1 sc:#2 t:#3 {\m@text{#3}{ #1 \r@tdir rt #2 #2 sc }{}} \global\let\tbox=\htext % ========= Various Restore forms ======== \gdef\g@save{\edef\g@restore{\p@w\b@ sl \v@p\b@ sd \s@lc\b@ slc \s@lj\b@ slj np \the\h@pos\b@ \the\v@pos\b@ mv }} \gdef\s@save{\edef\s@restore{\p@w\b@ sl \v@p\b@ sd \s@lc\b@ slc \s@lj\b@ slj np \the\h@pos\b@ \the\v@pos\b@ mv }} % ======== circle, arcs ========= % The PS arc will connect the center of the arc to the circumference % if the newpath includes the move to this point. Thus we define a % set of arc functions that include/exclude this feature. The default % does not include this form. \gdef\larc r:#1 sd:#2 ed:#3 {\h@num{#1}{\d@umc}\p@downtrue \e@xtend{\o@form}{ st np \the\h@pos\b@ \the\v@pos\b@ \the\d@umc\b@ #2 #3 arc st np \the\h@pos\b@ \the\v@pos\b@ mv }} \gdef\lcir r:#1 {\larc r:#1 sd:0 ed:360 } % ------ this is a raw arc ... can be used in fills -------- \gdef\arcc r:#1 sd:#2 ed:#3 {\h@num{#1}{\d@umc}\p@downtrue \e@xtend{\o@form}{\the\h@pos\b@ \the\v@pos\b@ \the\d@umc\b@ #2 #3 arc }} \gdef\arcn r:#1 sd:#2 ed:#3 {\h@num{#1}{\d@umc}\p@downtrue \e@xtend{\o@form}{\the\h@pos\b@ \the\v@pos\b@ \the\d@umc\b@ #2 #3 arcn }} % ======= fill command ========== % The fill command is essentially a polygonal fill ... not a point spreading % this means that it is possible to erase with white ... The form here % completes with a closepath applies the fill, starts a newpath and moves % to the current point. Pattern is a grey level. % 0 is black 1 is white \gdef\pfill p:#1 {\p@downtrue \e@xtend{\o@form}{cp #1 sg fill np \the\h@pos\b@ \the\v@pos\b@ mv }} % this form both fills and strokes around the path \gdef\lpfill p:#1 {\p@downtrue \e@xtend{\o@form}{cp gs #1 sg fill gr st np \the\h@pos\b@ \the\v@pos\b@ mv }} % ======== Postscript special forms ======== % This allows "raw" postscript to be put in the graph. \gdef\pst #1{\e@xtend{\o@form}{#1 }} % These are some useful postscript compatible forms. \gdef\closepath{\e@xtend{\o@form}{cp }} \gdef\newpath{\e@xtend{\o@form}{np }} \gdef\stroke{\e@xtend{\o@form}{st }} % ========= including external files ========== % an external file is included at the present point on the graph area % moves are required to get there % The actual file is placed inside a \t@box and tex commands are used % to get to the place ... They probably can be nested % #1 is the filename % The file is opened, if possible, to read its size. If this exists, it % is used to update the maximum h/v position. % The BoundingBox is determined \newread\q@file % #1 is the file name \gnewif{\ifq@read}{\q@readtrue}{\q@readfalse} \gnewif{\ifq@file}{\q@filetrue}{\q@filefalse} \gnewif{\ifb@boxexists}{\b@boxexiststrue}{\b@boxexistsfalse} % #1 == %%BoundingBox, #2 llh #3 llv #4 urh #5 urv #6 rest of line \gdef\uncat{\catcode`"=12} {\catcode`\%=12 \gdef\l@shift{\ifx\l@lh\empty \xdef\l@lh{\l@lv}\xdef\l@lv{\u@rh}\xdef \u@rh{\u@rv}\xdef\u@rv{\e@xt}\fi} \gdef\B@Box{%%BoundingBox} \gdef\a@tend{(atend)} \gdef\a@tendtest{\l@shift\ifx\l@lh\a@tend\relax\else \global\b@boxexiststrue\q@readfalse\bmess{<< At End Test >>}\fi} \long\gdef\q@inline #1:#2 #3 #4 #5 #6 #7//{\xdef \q@bbtest{#1}\xdef\l@lh{#2}\xdef \l@lv{#3}\xdef\u@rh{#4}\xdef\u@rv{#5}\xdef \e@xt{#6}\ifx\q@bbtest\B@Box \a@tendtest\fi \ifeof\q@file \q@readfalse \fi} \gdef\s@bbox{\b@boxexistsfalse \message{<< \bbmess -- \f@ilename>>}\q@readtrue \loop \relax \ifq@read\r@eadline\repeat} \gdef\r@eadline{ {\uncat \global\read\q@file to\q@parms } \expandafter\q@inline\q@parms {}:{\relax} {\relax} {\relax} {\relax} {\relax} \relax//\bmess{<<\q@parms>>}} \gdef\g@etpsize #1{{\catcode`\%=12\openin\q@file = #1\relax \edef\q@parms{}\global\q@filetrue\xdef\f@ilename{#1} \ifeof\q@file \message{<<\noincfile: #1 >>}\relax \global\q@filefalse\else \s@bbox \closein\q@file\fi}} } % end of % disable \newcount\h@px \newcount\v@px \newcount\h@mx \newcount\v@mx \gdef\s@avemaxpos{\global\h@px=\maxhpospix\global\v@px=\maxvpospix \global\h@mx=\minhpospix\global\v@mx=\minvpospix} \gdef\r@estoremaxpos{\global\maxhpospix=\h@px\global\maxvpospix\v@px \global\minhpospix=\h@mx\global\minvpospix\v@mx} \gdef\f@sc{\b@} \gdef\f@rt{\b@} \gdef\filerotate#1{\edef\f@rt{ XposR YposR tr #1 \r@tdir rt XposR neg YposR neg tr }} \gdef\filescale #1{\edef\f@sc{#1 #1 sc \f@schv}} \gdef\p@fileinit{ td begin \h@vinit gr gs \f@rt \t@rhv \f@sc end /texgraph save def /showpage {} def } \xdef\p@filefin{ texgraph restore } \global\let\mvec=\move \gdef\includefile #1 {\incscfile f:#1 sc:1 d:0 } \gdef\incscfile f:#1 sc:#2 d:#3 {\g@etpsize{#1}\ifb@boxexists \message{<<\incfile: #1 >>}\realadd{\u@rh}{-\l@lh}{\p@lh} \realadd{\u@rv}{-\l@lv}{\p@lv} \realmult{\p@lh}{.5}{\p@lhh} \realmult{\p@lv}{.5}{\p@lvh} \beginsegment \segmentscale #2 \global\let\g@dimo=\g@dim \graphdim pt \mvec h:{\p@lh} v:{\p@lv} \mvec h:{\p@lhh} v:{\p@lvh} \m@text{}{ /XposR \Xpos\b@ def /YposR \Ypos\b@ def }{} \endsegment \s@avemaxpos \beginsegment \segmentscale #2 \mvec h:{-\l@lh} v:{\u@rv} \htext{\filescale{#2}\filerotate{#3}\relax \special{\p@sinline\p@fileinit } \special{\p@sfile #1 } \special{\p@sinline\p@filefin }} \endsegment \r@estoremaxpos \global\let\g@dim=\g@dimo \else\message{<<\badincfile: #1 >>}\fi } \gdef\incscmvfile f:#1 sc:#2 d:#3 h:#4 v:#5 {\g@etpsize{#1}\ifb@boxexists \message{<<\incfile: #1 >>}\realadd{\u@rh}{-\l@lh}{\p@lh} \realadd{\u@rv}{-\l@lv}{\p@lv} \realmult{\p@lh}{.5}{\p@lhh} \realmult{\p@lv}{.5}{\p@lvh} \ifx#4L \edef\f@h{0}\else \ifx#4C \edef\f@h{1} \else \edef\f@h{2}\fi\fi \ifx#5T \edef\f@v{0}\else \ifx#5C \edef\f@v{1} \else\edef\f@v{2}\fi\fi \realmult{\p@lhh}{\f@h}{\h@off} \realmult{\p@lvh}{\f@v}{\v@off} \beginsegment \segmentscale #2 \global\let\g@dimo=\g@dim \graphdim pt \mvec h:{-\h@off} v:{-\v@off} \beginsegment \mvec h:{\p@lh} v:{\p@lv} \mvec h:{\p@lhh} v:{\p@lvh} \m@text{}{ /XposR \Xpos\b@ def /YposR \Ypos\b@ def }{} \endsegment \endsegment \s@avemaxpos \beginsegment \segmentscale #2 \mvec h:{-\l@lh} v:{\u@rv} \beginsegment \mvec h:{-\h@off} v:{-\v@off} \htext{\filescale{#2}\filerotate{#3}\relax \special{\p@sinline\p@fileinit } \special{\p@sfile #1 } \special{\p@sinline\p@filefin }} \endsegment \endsegment \r@estoremaxpos \global\let\g@dim=\g@dimo \else\message{<<\badincfile: #1 >>}\fi } % ============ Design Grid ============== % This will lay down a grid at the present location. The grid nominally % at unit dimension intervals. The scale factor sc modifies this. The % sc is local only to the grid \newcount\gcount \gdef\grid nh:#1 nv:#2 sc:#3 {\gcount= #1 \beginsegment \relative \penwidth .005 \graphscale #3 \beginsegment \loop \lvec h:#2 v:0 \move h:-#2 v:1 \ifnum \gcount > 1 \advance\gcount by -1 \repeat \endsegment \gcount = #2 \beginsegment \loop \lvec h:0 v:#1 \move h:1 v:-#1 \ifnum \gcount > 1 \advance\gcount by -1 \repeat \endsegment \endsegment} %========= end design grid ================ % =========== Arrow Vectors ============== % There are three types of arrow heads, filled, open V and triangle % These are always placed on the end of a vector. % The basic design has the arrow head which is placed on the vector % It theoretically can be placed on any curve where the angle is known or % computable. \newcount\a@len \newcount\a@wid % Parameter specification for arrowheads. % #1 -- length #2 -- width % The dimensions are interpreted at current graphscale in force and % are local to the segment group. \gdef\arrowheadscale{\arrowheadsize l:.16 w:.04 } \gdef\arrowheadsize l:#1 w:#2 {\grdimtopix{#1}{\a@len}{\h@pix }\grdimtopix{#2}{\a@wid}{\h@pix }} % postcript commands for inidividual arrow form \gdef\arrowheadtype t:#1 {\ifx#1T\edef\a@com{cp gs 1 sg fill gr st }\else \ifx#1F\edef\a@com{cp 0 sg fill }\else \edef\a@com{st }\fi\fi} \newcount\h@lp \newcount\v@lp % assumes that the dh and dv is in \h@lp \v@lp and present location is tip % of arrowhead \gdef\a@draw{st np \the\h@pos\b@ \the\v@pos\b@ mx \the\v@lp\b@ neg \the\h@lp\b@ at -\the\a@len\b@ \the\a@wid\b@ mv 0 0 lv -\the\a@len\b@ -\the\a@wid\b@ lv \a@com gr } \gdef\avec h:#1 v:#2 {\h@lp=\h@pos\relax \v@lp=\v@pos\relax \lvec h:#1 v:#2 \advance\h@lp by -\h@pos\relax \advance\v@lp by -\v@pos\relax \e@xtend{\o@form}{\a@draw}} % ============= End Arrow Vectors ============= % ========= Bezier Curve ========== % this is a cubic spline that is determined by four points. The initial % point is assumed to be the current point. An arrow is easily added. \gdef\clvec h1:#1 v1:#2 h2:#3 v2:#4 h3:#5 v3:#6 {\i@h{#1}\d@uma=\h@pos \i@v{#2}\d@umb=\v@pos\i@h{#3}\d@ume=\h@pos\i@v{#4}\d@umd=\v@pos \i@h{#5}\i@v{#6}\e@xtend{\o@form}{\the\d@uma\b@ \the\d@umb\b@ \the\d@ume\b@ \the\d@umd\b@ \the\h@pos\b@ \the\v@pos\b@ cv }\p@downtrue} \gdef\clv (#1 #2) (#3 #4) (#5 #6){\clvec h1:#1 v1:#2 h2:#3 v2:#4 h3:#5 v3:#6 } \gdef\cavec h1:#1 v1:#2 h2:#3 v2:#4 h3:#5 v3:#6 {\clvec h1:#1 v1:#2 h2:#3 v2:#4 h3:#5 v3:#6 \h@lp=\d@ume \relax \v@lp=\d@umd \relax \advance\h@lp by -\h@pos\relax \advance\v@lp by -\v@pos\relax \e@xtend{\o@form}{\a@draw}} \gdef\cav (#1 #2) (#3 #4) (#5 #6){\cavec h1:#1 v1:#2 h2:#3 v2:#4 h3:#5 v3:#6 } % ======= default values ========= % These are reset each time \btg is called \gdef\t@exgraphdef{\setbox0=\hbox{}\graphdim in \hpix 300/in % INRS Default \vpix 300/in % INRS Default \printhv 1 1 % DVIPS 300 dpi \filehv 4.17 -4.17 % DVIPS 300/72 \rtdir neg % DVIPS \def\h@grsc{1}\def\v@grsc{1}%sets default hor/vert scales \absoluteposition \relativescale \unitscale 1 \penwidth .015 \lpatt p:{[]} \linecap 1 \linejoin 1 \arrowheadsize l:.16 w:.04 \arrowheadtype t:T \textref h:L v:T } \xdef\s@egsc{1}% initial default \catcode`\@=12