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diff --git a/Master/texmf-dist/source/generic/xypic/xysmart.doc b/Master/texmf-dist/source/generic/xypic/xysmart.doc new file mode 100644 index 00000000000..2c1cfb82077 --- /dev/null +++ b/Master/texmf-dist/source/generic/xypic/xysmart.doc @@ -0,0 +1,569 @@ +%% $Id$ +%% +%% Xy-pic ``Smart Path feature'' option. +%% Copyright (c) 1998 George C. Necula <necula@cs.cmu.edu> +%% +%% This file is part of the Xy-pic package for graphs and diagrams in TeX. +%% See the companion README and INSTALL files for further information. +%% Copyright (c) 1991-1998 Kristoffer H. Rose <krisrose@ens-lyon.fr> +%% +%% The Xy-pic package is free software; you can redistribute it and/or modify +%% it under the terms of the GNU General Public License as published by the +%% Free Software Foundation; either version 2 of the License, or (at your +%% option) any later version. +%% +%% The Xy-pic package is distributed in the hope that it will be useful, but +%% WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +%% or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +%% for more details. +%% +%% You should have received a copy of the GNU General Public License along +%% with this package; if not, write to the Free Software Foundation, Inc., +%% 675 Mass Ave, Cambridge, MA 02139, USA. +%% +\ifx\xyloaded\undefined \input xy \fi + +\xyprovide{smartpath}{Smart Path option}{\stripRCS$Revision: 0.0 $}% + {George C. Necula}{necula@cs.cmu.edu}% + {School of Computer Science, + Carnegie Mellon University, + 5000 Forbes Avenue, + Pittsburgh, PA 15213-3891, USA} + +\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\paragraph*{Header:}\leavevmode +\DOCHEADER +\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + This extends the `arrow' feature, which is therefore required, with a + ``smart'' <path> between two <pos>itions. + +\DOCMODE( +\xyrequire{arrow}\xycatcodes +\DOCMODE) + + The <turn> syntax is extended with the construction +% +\begin{defs1} +% + ??w![<turn>] \iss ??c![`s] <diag> |_| <diag> <turnradius> +% +\end{defs1} +\noindent\unskip +% + ??c![\ar]"in"|_|"out"|/5pt| which draws a connector leaving $p$ in the + "in" <diag>onal direction and arrives at $c$ in the "out" <diag>onal + direction, using |5pt| turns. The connector contains only horizontal + or vertical lines and $\frac18$ sectors of circles of the given + (optional) <turnradius>. + + \BUG: Any labels are placed at the end of the connection. + +\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +\DOCMODE( +% The smart connection algorithm is as follows: +% +% A smart connector consists only of horizontal and vertical straight +% segments connected with 1/4 circles. 1/8 circles might be use at the start +% and end of the connector to reach a horizontal or a vertical. +% +% All possible connectors can be reduced to a series of equivalence classes, +% where two connectors are considered equivalent if they are identical after +% removing from each of them all the horizontal and vertical straight +% segments. Such a connector is called a representative. +% +% The algorithm first computes 10 representatives that start and end in the +% given directions and have at most one point where the orientation is +% changed. 5 of the representatives start counter-clockwise and the other +% 5 start clockwise. Among the counter-clockwise representatives, 1 does not +% have any change in orientation (one arc of circle starting and ending in the +% given directions). The other 4 are obtained by changing the orientation in +% the four points where the circle is tangent to a horizontal or a vertical. +% +% For each representative the algorithm determines if it can be extended with +% horizontal and vertical segments to reach the destination point when +% starting in the source point (the directions are already right by +% construction). For example, horizontal straight lines could be inserted +% in all the points where the representative is tangent to a horizontal line. +% In each such point a straight line segment can be inserted to extend the +% connector horizontally but only in the same direction of the connector at +% that point (the direction of the connetor in a point is towards the +% destination). For example, if the horizontal distance between the source and +% destination points is Dx and the horizontal distance between the start and +% the end of the representative connector is dx then the distance ``Dx - dx'' +% must be covered using horizontal straight lines. This distance is +% distributed equally among all the horizontal extension points of the right +% direction. If no such points exist, then the representative is discarded. +% The cost of a connector is the length of the representative plus the total +% length of straight extension segments, i.e., |Dx-dx| + |Dy-dy|. +% +% The algorithm selects among all the representatives that are not discarded, +% the one leading to the shortest connection. + + +% Change the PATHturn@ to recognize `s as a smart PATH. +\let\origPATHturn@=\PATHturn@ +\def\PATHturn@{% + \ifx \space@\next \expandafter\DN@\space{\xyFN@\PATHturn@}%gobble spaces + \else\ifx s\next + \let\origPATHturn@i=\PATHturn@i\let\PATHturn@i=\PATHsmartturn@i + \let\origPATHturn@cir=\PATHturn@cir\let\PATHturn@cir=\PATHsmartturn@cir + \DN@ s{\xyFN@\origPATHturn@}% Let the original routines do the parsing + \else + \DN@{\origPATHturn@}% + \fi\fi + \next@} + + +% Changed PATHturn@cir to allow half or full turns +\xydef@\PATHsmartturn@cir{% + \edef\next@{{\CIRin@@}{\expandafter\noexpand\CIRorient@@}{\CIRout@@}}% + \expandafter\PATHturn@i\next@} + + +% This is the changed function for placing the turn +\xydef@\PATHsmartturn@i#1#2#3{% + \DN@##1{% + \def\PATHinit@@{% + \xy@@{% + \def\sm@CIRin{#1}\def\sm@CIRout{#3}% The IN and OUT directions. Ignore + % the orientation + \ifx\sm@CIRout\empty %Only on direction is given. Use it as OUT and + %use the previous direction as IN + \let\sm@CIRout=\sm@CIRin + \let\sm@CIRin=\PATHlastout@@ + \fi + ##1\relax}% + \xy@@{\enter@{\basefromthebase@}}% + \xy@@{\sm@conn}% Draw the connection + \xy@@{\X@p=\X@c \Y@p=\Y@c \czeroEdge@% Save the start of the segment + \count@=\sm@CIRout\count@=\the\count@% Move forward a dash to + % touch the edge + \dimen@=\xydashl@ \ABfromdiag@ \advance\X@c\A@ \advance\Y@c\B@ + \edef\PATHpostpos@@{\X@c=\the\X@c \Y@c=\the\Y@c \noexpand\czeroEdge@ + \noexpand\PATHomitslide@@true}}% + \xy@@{\leave@ % + \edef\PATHlastout@@{\sm@CIRout}% Store the last direction + \count@=\sm@CIRout \dimen@=\xydashl@ \Directionfromdiag@}}}% + \expandafter\next@\expandafter{\the\toks@}\toks@={}% + \let\PATHextra@@=\empty + \def\PATHpost@@{\xy@@\PATHpostpos@@}% + \let\PATHlabelsextra@@=\relax + \let\PATHturn@i=\origPATHturn@i + \let\PATHturn@cir=\origPATHturn@cir + \xyFN@\PATHturn@ii} + + +\xydef@\sm@nil{} +\xydef@\sm@nnil{\sm@nil} +\xydef@\sm@maxcost{1000mm}% A very long connector + +% This computes and draws the connection +\xydef@\sm@conn{ +% \xy@showthe p{Source}\xy@showthe c{Dest}% +% \W@{Computing connector from p in \sm@CIRin\space to c in \sm@CIRout +% .Radius is \turnradius@}% + %Adjust the end points to the edge of the objects in the given directions + \enter@{\cfromthec@ \DirectionfromtheDirection@}\cfromp@% Adjust p + \count@=\sm@CIRin\count@=\the\count@ + \dimen@=\xydashl@ \ABfromdiag@ \advance\X@p\A@\advance\Y@p\B@ + \setupDirection@ \the\Edge@c\z@ \czeroEdge@ + \pfromc@ + \reverseDirection@ + % Now leave room for one dash to start with (for placing arrow tails) + \count@=\sm@CIRin\count@=\the\count@ + \dimen@=\xydashl@ \ABfromdiag@ + % Drop the arrow tail in the right place + \edef\tmp@{\noexpand\dir\artail@@}\expandafter\sm@drop@\tmp@ + \X@c=\X@p\advance\X@c\A@ \Y@c=\Y@p\advance\Y@c\B@ \czeroEdge@ + % Draw a straight connection from p to c + \sm@stri + % Set p to the end of the connection + \X@p=\X@c \Y@p=\Y@c + \leave@ +% \xy@showthe p{After adjust}% + \enter@{\pfromthep@ \DirectionfromtheDirection@}\pfromc@% Adjust c + \count@=\sm@CIRout\count@=\the\count@ + \dimen@=\xydashl@ \ABfromdiag@ \advance\X@p-\A@\advance\Y@p-\B@ + \setupDirection@ \the\Edge@c\z@ + \advance\X@c-\A@\advance\Y@c-\B@% Leave room for a dash to terminate the seg + \czeroEdge@ % The final segment will be drawn by PATH@segment + % Clear the tail setting for the last segment + \def\PATHlabelsnext@@{}% + \leave@ +% \xy@showthe c{After adjust}% + % Set the turn radius + \R@=\turnradius@ + \cirrestrict@@%Adjust the radius to fit the circles + % Initialize variables + \let\sm@circles=\sm@nil + \edef\sm@bestcost{\sm@maxcost}% Best so far is very bad + \sm@trycircles 1%Try counter clockwise first + \sm@trycircles{-1}%Try clockwise after +% +% Now check the best +% + \ifdim\sm@bestcost<\sm@maxcost +% \W@{}\W@{Best: \meaning\sm@bestconn}% + \cfromp@ +% \xy@showthe p{Source}% + \expandafter\sm@conndraw\sm@bestconn + \else + \xyerror@{Cannot draw the smart connector}{}% + \fi +} + +% Compute and examine 5 representatives, for the orientation given +% as #1 (1 for counter-clockwise and -1 for clockwise). +\xydef@\sm@trycircles#1{% + \ifnum #1>0% Compute the opposite orientation + \def\sm@CIRorienti{-1}% + \else + \def\sm@CIRorienti{1}% + \fi + % Generate lists of triples (IN,ORIENT,OUT) so that OUT_1=IN_2 and + % IN=IN_1 and OUT=OUT_2, and such that ORIENT_1=#1m ORIENT_2=-ORIENT_1 + % Then try each list in turn. + %Try one circle first (a singleton list) + \edef\tmp@{{{\sm@CIRin}{#1}{\sm@CIRout}}}% + \expandafter\sm@trycirclelist\expandafter{\tmp@\sm@nil}% + %Now try lists of two circles. + %Advance "in" so that it is a multiple of 90 degrees (that is, odd) + \count@@=\sm@CIRin\count@@=\the\count@@\count@=\count@@ + \sm@roundcount@{#1}% + \edef\sm@savecount@{\the\count@}% + % See if we need to add a 1/8 starting circle + \ifnum\the\count@=\the\count@@ \else +% + \edef\tmp@{{{\sm@CIRin}{#1}{\the\count@}}% + {{\the\count@}{\sm@CIRorienti}{\sm@CIRout}}}% + \expandafter\sm@trycirclelist\expandafter{\tmp@\sm@nil}% + \fi +% + \count@=\sm@savecount@\count@=\the\count@ + \sm@advancecount@ 2{#1}\edef\sm@savecount@{\the\count@}% Advance 90 deg. + \edef\tmp@{{{\sm@CIRin}{#1}{\the\count@}}% + {{\the\count@}{\sm@CIRorienti}{\sm@CIRout}}}% + \expandafter\sm@trycirclelist\expandafter{\tmp@\sm@nil}% +% + \count@=\sm@savecount@\count@=\the\count@ + \sm@advancecount@ 2{#1}\edef\sm@savecount@{\the\count@}% Advance 90 deg. + \edef\tmp@{{{\sm@CIRin}{#1}{\the\count@}}% + {{\the\count@}{\sm@CIRorienti}{\sm@CIRout}}}% + \expandafter\sm@trycirclelist\expandafter{\tmp@\sm@nil}% +% + \count@=\sm@savecount@\count@=\the\count@ + \sm@advancecount@ 2{#1}\edef\sm@savecount@{\the\count@}% Advance 90 deg. + \edef\tmp@{{{\sm@CIRin}{#1}{\the\count@}}% + {{\the\count@}{\sm@CIRorienti}{\sm@CIRout}}}% + \expandafter\sm@trycirclelist\expandafter{\tmp@\sm@nil}% +} + +% Advance the direction in \count@ by #1 (each unit is 45deg) in the +% dirction #2, taking care of wrap-around +\xydef@\sm@advancecount@#1#2{% +% \W@{Advancing count from \the\count@\space by #1\space +% in \xy@showorient #2}% + \ifnum #2>0 + \edef\tmp@{#1}% + \else + \edef\tmp@{-#1}% + \fi + \advance\count@\tmp@\count@=\the\count@ + \ifnum\the\count@<0 \advance\count@ 8\fi + \ifnum\the\count@>7 \advance\count@ -8\fi + \count@=\the\count@ +% \W@{ Resulting count@=\the\count@}% +} + +% Round counter to the next odd element (multiple of 90deg) +% in the given direction +\xydef@\sm@roundcount@#1{% + \ifcase\the\count@ + \advance\count@ #1\or + \or \advance\count@ #1\or + \or \advance\count@ #1\or + \or \advance\count@ #1\fi + \count@=\the\count@ + \ifnum\the\count@<0 \advance\count@ 8\fi + \ifnum\the\count@>7 \advance\count@ -7\fi + \count@=\the\count@ +} + +\newif\ifsm@firstseg +\newif\ifsm@acceptable + +% Given a representative described as a list of triplets ending with sm@nil, +% verify if is can be extended to the right destination +\xydef@\sm@trycirclelist#1{% + \R@p=\z@\U@p=\R@p% Clear the deltas + \def\sm@exthp{0}\def\sm@exthm{0}% + \def\sm@extvp{0}\def\sm@extvm{0}% Clear the extension points + \def\sm@dxp{0pt}\def\sm@dxm{0pt}% + \def\sm@dyp{0pt}\def\sm@dym{0pt}% Reset the extensions + \def\sm@segs{}% % Clear the segment list + \sm@firstsegtrue % Mark the first segment + \def\sm@connlen{0pt}% % Initialize the connector length + \let\sm@tryclcont=\sm@trycirclelist@i + \sm@trycirclelist@i #1%Strip {} to expose the list elements +% +% The connector was processed +% +% Add an extra segment at then end, if ending in a multiple of 90 deg + \count@@=\sm@CIRout\count@@=\the\count@\count@=\the\count@ + \sm@roundcount@{1}% Direction does not matter + \ifnum\count@=\count@@ + \edef\sm@segs{\sm@segs{{\the\count@}{1}{\the\count@}}}%Accum segment + \fi +% \W@{After trying CL deltax=\the\R@p, deltay=\the\U@p}% +% \sm@showext{\space}% +% \W@{ \space Segs: \meaning\sm@segs}% + %Now see if the connector can be extended enough + \A@=\X@p\advance\A@\R@p\advance\A@ -\X@c\A@=-\A@ % A=Dx + \B@=\Y@p\advance\B@\U@p\advance\B@ -\Y@c\B@=-\B@ % B=Dy + \sm@acceptabletrue +% \W@{ \space Dx=\the\A@, Dy=\the\B@}% + \ifdim\A@>0pt + \ifnum\sm@exthp>0 \dimen@=\A@ \divide\dimen@\sm@exthp + \edef\sm@dxp{\the\dimen@}% + \else \sm@acceptablefalse\fi\fi + \ifdim\A@<0pt + \ifnum\sm@exthm>0 \dimen@=\A@ \divide\dimen@\sm@exthm + \edef\sm@dxm{\the\dimen@}% + \else \sm@acceptablefalse\fi + \A@=-\A@%Make it positive + \fi + \ifdim\B@>0pt + \ifnum\sm@extvp>0 \dimen@=\B@ \divide\dimen@\sm@extvp + \edef\sm@dyp{\the\dimen@}% + \else \sm@acceptablefalse\fi\fi + \ifdim\B@<0pt + \ifnum\sm@extvm>0 \dimen@=\B@ \divide\dimen@\sm@extvm + \edef\sm@dym{\the\dimen@}% + \else \sm@acceptablefalse\fi + \B@=-\B@ + \fi + \ifsm@acceptable + %Compute the cost of the connector + \dimen@=\sm@connlen\advance\dimen@\A@\advance\dimen@\B@ +% \W@{ \space Cost is \the\dimen@}% + %See if it is best so far + \ifdim\dimen@<\sm@bestcost + \edef\sm@bestcost{\the\dimen@}% + \edef\sm@bestconn{{\sm@dxp}{\sm@dxm}{\sm@dyp}{\sm@dym}{\sm@segs}}% + \fi + \fi +} + +\xydef@\sm@showext#1{% + \W@{#1\space hp=\sm@exthp,hm=\sm@exthm,vp=\sm@extvp + ,vm=\sm@extvm,len=\sm@connlen}} + +% Process the next element in the list that describes the representative +% +\xydef@\sm@trycirclelist@i#1{% + \def\@tmp{#1}% + \ifx \@tmp\sm@nnil \let\sm@tryclcont=\relax\else + \expandafter\sm@tryclcar\@tmp \fi + \sm@tryclcont} + +\xydef@\sm@tryclcar#1#2#3{% +% \W@{Trying one turn in #1\space orient #2\space out #3}% + %Compute deltax in R@p and deltay in U@p. Move them to center first. + \dimen@=\ifnum #2<0 -\fi\R@ + \count@=#1\count@=\the\count@ \ABfromdiag@ + \advance\R@p -\B@ \advance\U@p \A@ +% \xy@showdim{ After center}% + % Move them to exit + \count@=#3\count@=\the\count@ \ABfromdiag@ + \advance\R@p \B@ \advance\U@p -\A@ +% \xy@showdim{ After turn}% +% \xy@showthe p{ }% + % Now update the extension points + \sm@computeext{#1}{#2}{#3}% +} + +% +% Compute the extensions +% +\xydef@\sm@computeext#1#2#3{% +% \W@{Computing extents for turn in #1\space orient #2\space out #3}% + \ifsm@firstseg + \sm@accumext#1% + \sm@firstsegfalse + \fi + \count@@=#1\count@@=\the\count@@\count@=\count@@ + \dimen@=\sm@connlen +% \W@{Before rounding count@=\the\count@, count@@=\the\count@@}% + \sm@roundcount@{#2}% +% \W@{After rounding count@=\the\count@, count@@=\the\count@@}% + \ifnum \count@=\count@@ + \sm@advancecount@ 1{#2}% Advance by 90 degrees if odd. By 45 first + \advance\dimen@ 0.7854\R@% It was incremented with 1/8 circle + \ifnum \count@=#3% Check if done + \else + \sm@advancecount@ 1{#2}% Another 45 + \advance\dimen@ 0.7854\R@% It was incremented with 1/8 circle + \fi + \else + \advance\dimen@ 0.7854\R@% It was incremented with 1/8 circle + \fi + \edef\sm@connlen{\the\dimen@}% Save the connector length + \sm@accumext{\the\count@}% + \edef\sm@segs{\sm@segs{{#1}{#2}{\the\count@}}}%Accum segment + \ifnum\the\count@=#3 \else + \edef\tmp@{{\the\count@}{#2}{#3}}%Recursive call + \expandafter\sm@computeext\tmp@ + \fi +} + +% +% Accumulate the extensions +% +\xydef@\sm@accumext#1{% +% \W@{Accumulating extent for #1}% +% \sm@showext{Before accum:}% + \ifcase #1% + \or \count@@=\sm@extvm\advance\count@@ by1% + \edef\sm@extvm{\the\count@@}% 1 is V- + \or\or \count@@=\sm@exthp\advance\count@@ by1% + \edef\sm@exthp{\the\count@@}% 3 is H+ + \or\or \count@@=\sm@extvp\advance\count@@ by1% + \edef\sm@extvp{\the\count@@}% 5 is V+ + \or\or \count@@=\sm@exthm\advance\count@@ by1% + \edef\sm@exthm{\the\count@@}% 7 in H- + \fi +% \sm@showext{After accum:}% +} + + +% Draw a computed connector. +% 1,2,3,4 - dx+, dx-, dv+, dv- (lengths of straight connectors in each +% direction) +% 5 - a list of segments, each enclosed in a pair of braces. +\xydef@\sm@conndraw#1#2#3#4#5{% + \def\sm@contlist{\sm@drawseglist}% + \edef\sm@dxp{#1}% + \edef\sm@dxm{#2}% + \edef\sm@dyp{#3}% + \edef\sm@dym{#4}%Save deltas + \sm@drawseglist #5\sm@nil} +\xydef@\sm@drawseglist#1{% Get the first segment + \ifx #1\sm@nil \def\sm@contlist{}\else + \sm@drawseg #1\fi + \sm@contlist} + +% +% Draw a segment +% +\xydef@\sm@drawseg#1#2#3{% A segment is CIRin+CIRorient+CIRout +% \W@{Drawing segment in=#1\space out=\space #3}\xy@showthe c{Seg start}% + \def\CIRin@@{#1}\def\CIRout@@{#3}% + \sm@straight%See if a straight line is needed here. Insert it and + %reset c if needed + \ifnum\CIRin@@=\CIRout@@ \else + % Compute the center of the circle + \count@=\CIRin@@ + \dimen@=\ifnum #2<0 -\fi\R@ + \ABfromdiag@ + \advance\X@c -\B@ \advance\Y@c \A@ +% \xy@showthe c{Center of circle}% +% \xy@showdim{Before center}% + \ifnum #2>0 \def\CIRorient@@{\CIRacw@}% + \else \def\CIRorient@@{\CIRcw@}\fi + \drop@\literal@{\hbox\bgroup\cir@i}% Place the circle + % Now move the the end of the arc + \dimen@=\ifnum #2<0 -\fi\R@ + \count@=\CIRout@@\count@=\count@%Wierd. If I remove this last assignm +% %\count@ is not set + \ABfromdiag@ +% \xy@showthe c{Before advance}% +% \xy@showdim{Before advance}% + \advance\X@c\B@ \advance\Y@c-\A@ +% \xy@showthe c{After circle}% +% \xy@showdim{After circle}% + \fi +} + +\xydef@\sm@straight{% + \U@c=\z@\D@c=\U@c\L@c=\U@c\R@c=\U@c + \pfromc@ %Set p at the beginning of the segment + \ifcase \CIRin@@ \or% 1 is V- + \A@=\sm@dym\advance \Y@c\A@ %Wierd. I have to use the temporary A@!! + \or\or % 3 is H+ + \A@=\sm@dxp\advance \X@c\A@ + \or\or % 5 is V+ + \A@=\sm@dyp\advance \Y@c\A@ + \or\or % 7 is H- + \A@=\sm@dxm\advance \X@c\A@ \fi + \ifdim\X@c=\X@p\ifdim\Y@c=\Y@p\else \sm@stri \fi\else \sm@stri \fi +} + +\xydef@\sm@stri{% +% \W@{Drawing straight connection}\xy@showthe p{StrSrc}\xy@showthec{StrDst}% + \edef\tmp@{\expandafter\noexpand\arstemprefix@@\arstem@@}% + \expandafter\sm@connect@\tmp@} +\xydef@\sm@connect@#1#{% + \DN@##1{\connect@{#1}{##1}}\next@} + +\xydef@\sm@drop@#1#{% + \DN@##1{\drop@{#1}{##1}}\next@} + +% Compute and draw a connector. External interface +% 1 - in (for p) +% 2 - out (for c) +% 3 - suggested radius +\xydef@\smconn#1#2#3{% + \edef\sm@CIRin{#1}\edef\sm@CIRout{#2}%Memorize the directions + \R@=#3\R@=\the\R@ + \sm@conn} + +\xyendinput +\DOCMODE) + +\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +% Here is an example illustrating a smart <path> (as well as the +% extensions of the `necula' extension of \S??[:necula]). +%% +%\xyuncatcodes\xyrequire{necula}\xycatcodes +%\begin{code} +%\def\triangle{[P:DL+/d1pc/,RC+/r1pc/,UL+/u1pc/]}% +%\def\diamond{[P:DL,DR,RC+/r1pc/,UR,UL,LC+/l1pc/]} +%\xy +%\xytracing\POS +% 0 *+<5mm>e|\triangle|[F-]\txt{Test}="one" , +% <2cm,1cm> *+<5mm>e|\diamond|[F.]\txt{Test}="two" +% \ar @{>->} `sdr_d/30pt "one" +%\endxy +%\end{code} +%\displaycode\noindent +%% +% will typeset +%% +%$$\docode$$ + + \BUG: This code should probably be merged with the `arrow' feature. + +\DOCMODE2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + Finally the log. + +\DOCMODE( +% $Log$ +% Received from George. +\DOCMODE) + +\DOCMODE3%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +% Tell Emacs that this is a LaTeX document and how it is formatted: +% Local Variables: +% mode:latex +% fill-prefix:"\t" +% fill-column:77 +% paragraph-separate:"^[ \t\f]*$\\|^[^\t]\\|\\\\\\\\\\|\\$\\$\\|[^\n\\\\][%&]" +% paragraph-start:"^[ \t\f]*$\\|^[^\t]\\|\\\\\\\\\\|\\$\\$\\|[^\n\\\\][%&]" +% End: |