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sseqdrawing.code.tex
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sseqdrawing.code.tex
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%%
%% Package: spectralsequences v1.2.0 2017-09-16 2017-09-16
%% Author: Hood Chatham
%% Email: hood@mit.edu
%% Date: 2017-12-10
%% License: Latex Project Public License
%%
%% File: sseqdrawing.code.tex
%%
%% Defines the macros that draw the features of the spectral sequence (at least, those that aren't drawn by tikz).
%% Everything here has to be super optimized, because like 90% of the execution time is in these functions.
%% In particular, tikz is a horrible performance hole that must be avoided at all costs. For example, the code
%% the code to produce the axis ticks used to use the tikz \node command, and in the file example_KF3n.tex drawing
%% the axes ticks was taking about 1/3 of the compile time (a little under 1s out of a 3.2)
%%
% Only for integer valued coordinates...
\def\sseq@qpointxy#1#2{\pgfqpointxy{\numexpr#1+\sseq@xoffset\relax}{\numexpr#2+\sseq@yoffset\relax}}
\def\sseq@transform@xymirror{
\pgfsetxvec{\pgfqpoint{1cm}{0cm}}
\pgfsetyvec{\pgfqpoint{0cm}{1cm}}
\pgftransformcm{0}{1}{1}{0}{\pgfpointxy{\sseq@xoffset*\sseq@xscale }{\sseq@yoffset*\sseq@yscale}} % Reflect x and y axes,
\pgftransformshift{\pgfpointxy{-\sseq@xoffset*\sseq@yscale}{-\sseq@yoffset*\sseq@xscale}} % but we need to conjugate by a shift of (xoffset,yoffset)
\pgfsetyvec{\pgfqpoint{0cm}{\sseq@xscale cm}}
\pgfsetxvec{\pgfqpoint{\sseq@yscale cm}{0cm}}
}
\def\sseq@setlayoutparameter#1#2{\@xp\let\csname sseq@#1\@xp\endcsname\csname sseq@#1@#2\endcsname}
\def\sseq@setlayoutparameters{
\sseq@setlayoutparameter{yaxisorigin}{x\sseq@xaxistype}
\sseq@setlayoutparameter{drawyaxis}{x\sseq@xaxistype}
\sseq@setlayoutparameter{yaxisstartoffset}{x\sseq@xaxistype}
\sseq@setlayoutparameter{yaxisendoffset}{x\sseq@xaxistype}
\sseq@setlayoutparameter{bottomgridpadding}{x\sseq@xaxistype}
\sseq@setlayoutparameter{topgridpadding}{x\sseq@xaxistype}
\sseq@setlayoutparameter{bottomclippadding}{x\sseq@xaxistype}
\sseq@setlayoutparameter{topclippadding}{x\sseq@xaxistype}
\sseq@setlayoutparameter{xlabelposition}{x\sseq@xaxistype}
%
\sseq@setlayoutparameter{xaxisorigin}{y\sseq@yaxistype}
\sseq@setlayoutparameter{drawxaxis}{y\sseq@xaxistype}
\sseq@setlayoutparameter{xaxisstartoffset}{y\sseq@yaxistype}
\sseq@setlayoutparameter{xaxisendoffset}{y\sseq@yaxistype}
\sseq@setlayoutparameter{leftgridpadding}{y\sseq@yaxistype}
\sseq@setlayoutparameter{rightgridpadding}{y\sseq@yaxistype}
\sseq@setlayoutparameter{leftclippadding}{y\sseq@yaxistype}
\sseq@setlayoutparameter{rightclippadding}{y\sseq@yaxistype}
\sseq@setlayoutparameter{ylabelposition}{y\sseq@xaxistype}
}
% The appropriate one of these is chosen by the "axis type" keys in sseqkeys.
% Used to determine axis and ticks placement
\def\sseq@xaxisorigin@yborder{\sseq@xmin}
\def\sseq@xaxisorigin@yframe{\sseq@xmin}
\def\sseq@xaxisorigin@ycenter{\sseq@xaxisorigin@center@}
\def\sseq@yaxisorigin@xborder{\sseq@ymin}
\def\sseq@yaxisorigin@xframe{\sseq@ymin}
\def\sseq@yaxisorigin@xcenter{\sseq@yaxisorigin@center@}
% Used to determine clipping and grid boundaries
\def\sseq@leftgridpadding@yborder{\dimexpr\sseq@yaxisgap-\sseq@yclip@axisgap\relax}
\def\sseq@rightgridpadding@yborder{\sseq@xaxis@end@extend}
\def\sseq@leftgridpadding@ycenter{\sseq@xaxis@start@extend}
\def\sseq@rightgridpadding@ycenter{\sseq@xaxis@end@extend}
\def\sseq@leftgridpadding@yframe{\dimexpr\sseq@yaxisgap-\sseq@yclip@axisgap\relax}
\def\sseq@rightgridpadding@yframe{5cm} % Just make it big enough to push off the end of the clip
\def\sseq@leftgridpadding@ynone{\sseq@yaxisgap}
\def\sseq@rightgridpadding@ynone{\sseq@yaxisgap}
\def\sseq@bottomgridpadding@xborder{\dimexpr\sseq@xaxisgap-\sseq@xclip@axisgap\relax}
\def\sseq@topgridpadding@xborder{\sseq@yaxis@end@extend}
\def\sseq@bottomgridpadding@xcenter{\sseq@yaxis@start@extend}
\def\sseq@topgridpadding@xcenter{\sseq@yaxis@end@extend}
\def\sseq@bottomgridpadding@xframe{\dimexpr\sseq@xaxisgap-\sseq@xclip@axisgap\relax}
\def\sseq@topgridpadding@xframe{5cm}
\def\sseq@bottomgridpadding@xnone{\sseqxaxisgap}
\def\sseq@topgridpadding@xnone{\sseq@xaxisgap}
\def\sseq@leftclippadding@yborder{\dimexpr-\sseq@yaxisgap+\sseq@yclip@axisgap\relax}
\def\sseq@rightclippadding@yborder{\dimexpr\sseq@xaxis@end@extend+\sseq@clip@padding@right\relax}
\def\sseq@leftclippadding@ycenter{\dimexpr-\sseq@xaxis@start@extend-\sseq@clip@padding@left\relax}
\def\sseq@rightclippadding@ycenter{\dimexpr\sseq@xaxis@end@extend+\sseq@clip@padding@right\relax}
\def\sseq@leftclippadding@yframe{\dimexpr-\sseq@yaxisgap+\sseq@yclip@axisgap\relax}
\def\sseq@rightclippadding@yframe{\dimexpr\sseq@yaxisgap-\sseq@yclip@axisgap\relax}
\def\sseq@leftclippadding@ynone{\dimexpr-\sseq@yaxisgap-\sseq@clip@padding@left\relax}
\def\sseq@rightclippadding@ynone{\dimexpr\sseq@yaxisgap+\sseq@clip@padding@right\relax}
\def\sseq@bottomclippadding@xborder{\dimexpr-\sseq@xaxisgap+\sseq@xclip@axisgap\relax}
\def\sseq@topclippadding@xborder{\dimexpr\sseq@yaxis@end@extend+\sseq@clip@padding@top\relax}
\def\sseq@bottomclippadding@xcenter{\dimexpr-\sseq@yaxis@start@extend-\sseq@clip@padding@bottom\relax}
\def\sseq@topclippadding@xcenter{\dimexpr\sseq@yaxis@end@extend+\sseq@clip@padding@top\relax}
\def\sseq@bottomclippadding@xframe{\dimexpr-\sseq@xaxisgap+\sseq@xclip@axisgap\relax}
\def\sseq@topclippadding@xframe{\dimexpr\sseq@xaxisgap-\sseq@xclip@axisgap\relax}
\def\sseq@bottomclippadding@xnone{\dimexpr-\sseq@xaxisgap-\sseq@clip@padding@bottom\relax}
\def\sseq@topclippadding@xnone{\dimexpr\sseq@xaxisgap+\sseq@clip@padding@top\relax}
% Used to figure out how much further beyond (min -- max) to draw axes
\def\sseq@xaxisstartoffset@yborder{\dimexpr\sseq@xaxis@tail+\sseq@yaxisgap\relax}
\def\sseq@xaxisendoffset@yborder{\sseq@xaxis@end@extend}
\def\sseq@xaxisstartoffset@ycenter{\sseq@xaxis@start@extend}
\def\sseq@xaxisendoffset@ycenter{\sseq@xaxis@end@extend}
\def\sseq@xaxisstartoffset@yframe{\sseq@yaxisgap}
\def\sseq@xaxisendoffset@yframe{\sseq@yaxisgap}
\def\sseq@yaxisstartoffset@xborder{\dimexpr\sseq@yaxis@tail+\sseq@xaxisgap\relax}
\def\sseq@yaxisendoffset@xborder{\sseq@yaxis@end@extend}
\def\sseq@yaxisstartoffset@xcenter{\sseq@yaxis@start@extend}
\def\sseq@yaxisendoffset@xcenter{\sseq@yaxis@end@extend}
\def\sseq@yaxisstartoffset@xframe{\sseq@xaxisgap}
\def\sseq@yaxisendoffset@xframe{\sseq@xaxisgap}
\def\sseq@xlabelposition@xborder{(0,-\sseq@xaxisstartoffset)}
\def\sseq@xlabelposition@xcenter{(-\sseq@yaxisgap,-\sseq@xaxisstartoffset-5pt)}
\def\sseq@xlabelposition@xframe{(0,-\sseq@xaxisgap-\sseq@xlabelgap-10pt)}
\def\sseq@xlabelposition@xnone{(0,0)}
\def\sseq@ylabelposition@yborder{(0,\sseq@yaxisstartoffset)}
\def\sseq@ylabelposition@ycenter{(-\sseq@xaxisgap,\sseq@yaxisstartoffset+5pt)}
\def\sseq@ylabelposition@yframe{(0,\sseq@yaxisgap+\sseq@ylabelgap+10pt)}
\def\sseq@ylabelposition@ynone{(0,0)}
%%%
%%% Draw axes and clip
%%%
\def\sseq@handlexaxis{
\bgroup
\sseq@drawxaxis
\ifsseq@drawxaxisticks
\sseq@drawxticks
\fi
\egroup
}
\def\sseq@handleyaxis{
\bgroup
\sseq@drawyaxis
\ifsseq@drawyaxisticks
\sseq@drawyticks
\fi
\egroup
}
% Draws an x axis. Use with \sseq@transform@xymirror to draw y axis.
% #1 -- horizontal start offset
% #2 -- horizontal end offset
% #3 -- vertical offset
% #4 -- start value
% #5 -- end value
% #6 -- vertical value
\def\sseq@drawaxis@generic#1#2#3#4#5#6{
\bgroup
\pgftransformshift{\pgfqpoint{#2}{#3}}
\pgfpathmoveto{\sseq@qpointxy{#5}{#6}}
\egroup
%
\bgroup
\pgftransformshift{\pgfqpoint{#1}{#3}}
\pgfpathlineto{\sseq@qpointxy{#4}{#6}}
\egroup
}
\def\sseq@drawxaxis@ynone{
\sseq@drawxaxisticksfalse
}
\def\sseq@drawyaxis@xnone{
\sseq@drawyaxisticksfalse
}
\def\sseq@drawxaxis@yborder{
\sseq@drawaxis@generic{-\sseq@xaxisstartoffset}{\sseq@xaxisendoffset}{-\sseq@xaxisgap}{\sseq@xmin}{\sseq@xmax}{\sseq@yaxisorigin}
\pgfusepath{stroke}
}
\let\sseq@drawxaxis@ycenter\sseq@drawxaxis@yborder
\def\sseq@drawxaxis@yframe{
\sseq@drawaxis@generic{-\sseq@xaxisstartoffset}{\sseq@xaxisendoffset}{-\sseq@xaxisgap}{\sseq@xmin}{\sseq@xmax}{\sseq@ymin}
\sseq@drawaxis@generic{-\sseq@xaxisstartoffset}{\sseq@xaxisendoffset}{ \sseq@xaxisgap}{\sseq@xmin}{\sseq@xmax}{\sseq@ymax}
\pgfusepath{stroke}
}
\def\sseq@drawyaxis@xborder{
\bgroup
\sseq@transform@xymirror
\sseq@drawaxis@generic{-\sseq@yaxisstartoffset}{\sseq@yaxisendoffset}{-\sseq@yaxisgap}{\sseq@ymin}{\sseq@ymax}{\sseq@xaxisorigin}
\pgfusepath{stroke}%
\egroup
}
\let\sseq@drawyaxis@xcenter\sseq@drawyaxis@xborder
\def\sseq@drawyaxis@xframe{
\bgroup
\sseq@transform@xymirror
\sseq@drawaxis@generic{-\sseq@yaxisstartoffset}{\sseq@yaxisendoffset}{-\sseq@yaxisgap}{\sseq@ymin}{\sseq@ymax}{\sseq@xmin}
\sseq@drawaxis@generic{-\sseq@yaxisstartoffset}{\sseq@yaxisendoffset}{ \sseq@yaxisgap}{\sseq@ymin}{\sseq@ymax}{\sseq@xmax}
\pgfusepath{stroke}%
\egroup
}
\ExplSyntaxOn
\def\sseq@intdivceiling#1#2{%
\ifnum#1>\z@ % \int_div_truncate:nn rounds towards 0. We want \int_div_ceiling
\int_div_truncate:nn{#1+#2-1}{#2} % if positive, use ceil(p/q)=floor((p+q-1)/q) for p,q integers
\else
\int_div_truncate:nn{#1}{#2} % if we are negative, towards 0 is ceiling
\fi
}
\def\sseq@intdivfloor#1#2{%
\ifnum#1<\z@ % \int_div_truncate:nn rounds towards 0. We want \int_div_floor
\int_div_truncate:nn{#1-#2+1}{#2} % if we are negative, use floor(p/q) = ceil(p-q+1/q) for p,q integers
\else
\int_div_truncate:nn{#1}{#2} % if positive, towards 0 is floor
\fi
}
\ExplSyntaxOff
% #1 -- xmin
% #2 -- xmax
% #3 -- step
% #4 -- offset
% #5 -- ymin
% #6 -- xaxisgap
% #7 -- code
\def\sseq@tickloop@generic#1#2#3#4#5#6#7{
\sseq@tempx=\numexpr % min
\sseq@intdivceiling{#1}{#3} * #3
-
\sseq@intdivceiling{#4}{#3} * #3 + #4
\relax
\ifnum\sseq@tempx<#1\relax
\advance\sseq@tempx#3\relax
\fi
\sseq@tempxb=\numexpr#2+1\relax % max
\loop
\bgroup
\pgftransformshift{\sseq@qpointxy{\sseq@tempx}{#5}}%
\pgftransformshift{\pgfqpoint{0pt}{#6}}
#7
\egroup
\advance\sseq@tempx#3\relax
\ifnum\sseq@tempx<\sseq@tempxb\repeat
}
\def\sseq@drawxticks{%
\sseq@tickloop@generic{\sseq@xmin}{\sseq@xmax}{\sseq@xtickstep}{\sseq@xtickstepoffset}{\sseq@yaxisorigin}{-\sseq@xaxisgap}{
\pgftransformshift{\pgfqpoint{0pt}{-\sseq@xlabelgap}}
\pgftransformresetnontranslations
%\@xp\tikzset\@xp{\sseq@xtickstyle}
%\pgftext{\tikz@options\tikz@textfont\hbox{$\sseq@xtickfn{\the\sseq@tempx}$}}%
\@xp\node\@xp[\sseq@xtickstyle]{\hbox{$\sseq@xtickfn{\the\sseq@tempx}$}};
}
\ifnum\sseq@xmajortickstep>\z@
\sseq@tickloop@generic{\sseq@xmin}{\sseq@xmax}{\sseq@xmajortickstep}{\sseq@xtickstepoffset}{\sseq@yaxisorigin}{-\sseq@xaxisgap}{
\pgfpathmoveto{\pgfpointorigin}
\pgfpathlineto{\pgfpoint{0}{-0.4*\sseq@xaxisgap}}
}
\fi
\ifnum\sseq@xminortickstep>\z@
\sseq@tickloop@generic{\sseq@xmin}{\sseq@xmax}{\sseq@xminortickstep}{\sseq@xtickstepoffset}{\sseq@yaxisorigin}{-\sseq@xaxisgap}{
\pgfpathmoveto{\pgfpointorigin}
\pgfpathlineto{\pgfpoint{0}{-0.2*\sseq@xaxisgap}}
}
\fi
\pgfusepath{stroke}
}
\def\sseq@drawyticks{%
\sseq@transform@xymirror
\sseq@tickloop@generic{\sseq@ymin}{\sseq@ymax}{\sseq@ytickstep}{\sseq@ytickstepoffset}{\sseq@xaxisorigin}{-\sseq@yaxisgap}{
\pgftransformshift{\pgfqpoint{0pt}{-\sseq@ylabelgap}}
\pgftransformresetnontranslations
%\@xp\tikzset\@xp{\sseq@ytickstyle}
%\pgftext{\tikz@options\tikz@textfont\hbox{$\sseq@ytickfn{\the\sseq@tempx}$}}%
\@xp\node\@xp[\sseq@ytickstyle]{\hbox{$\sseq@ytickfn{\the\sseq@tempy}$}};
}
\ifnum\sseq@ymajortickstep>\z@
\sseq@tickloop@generic{\sseq@ymin}{\sseq@ymax}{\sseq@ymajortickstep}{\sseq@ytickstepoffset}{\sseq@xaxisorigin}{-\sseq@yaxisgap}{
\pgfpathmoveto{\pgfpointorigin}
\pgfpathlineto{\pgfpoint{0}{-0.4*\sseq@yaxisgap}}
}
\fi
\ifnum\sseq@yminortickstep>\z@
\sseq@tickloop@generic{\sseq@ymin}{\sseq@ymax}{\sseq@yminortickstep}{\sseq@ytickstepoffset}{\sseq@xaxisorigin}{-\sseq@yaxisgap}{
\pgfpathmoveto{\pgfpointorigin}
\pgfpathlineto{\pgfpoint{0}{-0.2*\sseq@yaxisgap}}
}
\fi
\pgfusepath{stroke}
}
\def\sseq@setupclip{
%\clip(\sseq@xmin-0.4,\sseq@ymin-0.4) rectangle (\sseq@xmax+0.5,\sseq@ymax+0.5);%
\ifsseq@clip
\ifx\sseq@customclip\pgfutil@empty
\bgroup
\def\xmin{\pgftransformshift{\pgfqpoint{\sseq@leftclippadding}{0pt}}}
\def\ymin{\pgftransformshift{\pgfqpoint{0pt}{\sseq@bottomclippadding}}}
\def\xmax{\pgftransformshift{\pgfqpoint{\sseq@rightclippadding}{0pt}}}
\def\ymax{\pgftransformshift{\pgfqpoint{0pt}{\sseq@topclippadding}}}
\bgroup
\xmin\ymin
\pgfpathmoveto{\pgfqpointxy{\numexpr\sseq@xmin+\sseq@xoffset\relax}{\numexpr\sseq@ymin+\sseq@yoffset\relax}}
\egroup
\bgroup
\xmin\ymax
\pgfpathlineto{\pgfqpointxy{\numexpr\sseq@xmin+\sseq@xoffset\relax}{\numexpr\sseq@ymax+\sseq@yoffset\relax}}
\egroup
\bgroup
\xmax\ymax
\pgfpathlineto{\pgfqpointxy{\numexpr\sseq@xmax+\sseq@xoffset\relax}{\numexpr\sseq@ymax+\sseq@yoffset\relax}}
\egroup
\bgroup
\xmax\ymin
\pgfpathlineto{\pgfqpointxy{\numexpr\sseq@xmax+\sseq@xoffset\relax}{\numexpr\sseq@ymin+\sseq@yoffset\relax}}
\egroup
\egroup
\pgfpathclose
\pgfgetpath\sseq@theclippath % This stores the clipping so I can apply it later
\pgfusepath{discard}% This has to be after the egroup or else the clipping gets screwed up
%
\bgroup
\pgfpathmoveto{\pgfqpointxy{\numexpr\sseq@xmin+\sseq@xoffset\relax}{\numexpr\sseq@ymin+\sseq@yoffset\relax}}
\pgfpathlineto{\pgfqpointxy{\numexpr\sseq@xmin+\sseq@xoffset\relax}{\numexpr\sseq@ymax+\sseq@yoffset\relax}}
\pgfpathlineto{\pgfqpointxy{\numexpr\sseq@xmax+\sseq@xoffset\relax}{\numexpr\sseq@ymax+\sseq@yoffset\relax}}
\pgfpathlineto{\pgfqpointxy{\numexpr\sseq@xmax+\sseq@xoffset\relax}{\numexpr\sseq@ymin+\sseq@yoffset\relax}}
\pgfpathclose
\egroup
\pgfgetpath\sseq@therangepath % Only for deciding whether to draw "tricky edges"
\pgfusepath{discard}
\else
\def\sseq@temp{\path[name path=temp]}
\@xptwo\sseq@temp\@xp\@gobble\sseq@customclip
\pgfgetpath\sseq@theclippath
\let\sseq@theclippath\tikz@intersect@path@name@temp
\fi
\else
\let\sseq@theclippath\relax
\fi
}
\def\sseq@useclip{\ifx\sseq@theclippath\relax\else\pgfsetpath\sseq@theclippath\pgfusepath{clip}\fi}
% sets \pgf@xa and \pgf@ya equal to the coordinates of (1,1), sets \pgf@xb and \pgf@xb equal to (x grid step, y grid step)
\def\sseq@grid@setstepandgridstep{
\pgf@process{\pgfqpointxy{1}{1}}
\pgf@xa=\pgf@x
\pgf@ya=\pgf@y
\pgf@process{\pgfqpointxy{\sseq@xgridstep}{\sseq@ygridstep}}
\pgf@xb=\pgf@x
\pgf@yb=\pgf@y
}
% #1 -- macro to store result in
% #2 -- "x" or "y" as appropriate
% #3 -- length (with units)
% #4 -- fraction of gridstep
% If #2 is x, then it either sets #1 to #3/(x scale) or xgridstep*#4, whichever is smaller
% The output is intended for use with \pgfpointxy.
\def\sseq@grid@atmostgridstep#1#2#3#4{
\ifdim#3<\dimexpr\csname pgf@#2b\endcsname*#4\relax
\pgfmathparse{#3/\csname pgf@#2a\endcsname}
\let#1\pgfmathresult
\else
\edef#1{\csname sseq@#2gridstep\endcsname*#4}
\fi
}
% This grid was a huge pain in the ass to get right...
\def\sseq@grid@chess{
\bgroup
\pgfscope
% Pad on the right and top by either the grid padding, or the remaining piece of the checkerboard before it would start a new square
% (it looks ugly to have a tiny sliver). Annoyingly, mod returns its result with the same sign as its input, so in order to reduce mod
% \sseq@xgridstep and get a positive result, we have to do it twice. The 0.5cm*scale here matches the -0.5 in the \pgfpathgrid call.
\pgfmathsetmacro\sseq@rightpadding{min(
\sseq@rightgridpadding,
1cm* mod(mod(-\sseq@xmax,\sseq@xgridstep)+\sseq@xgridstep,\sseq@xgridstep)+0.5cm*\sseq@xscale-0.05cm
)}
\pgfmathsetmacro\sseq@toppadding{min(
\sseq@topgridpadding,
1cm * mod(mod(-\sseq@ymax,\sseq@ygridstep)+\sseq@ygridstep,\sseq@ygridstep)+0.5cm*\sseq@yscale-0.02cm
)}
% Because of complicated aliasing issues that arise when misusing the \pgfgrid command in this way,
% it's more convenient to add a clip than to actually stop things in the right place.
\clip (\sseq@xmin-\sseq@xoffset,\sseq@ymin-\sseq@yoffset) ++ (-0.48, -0.48)
rectangle ([shift={(\sseq@rightpadding pt,\sseq@toppadding pt)}]\sseq@xmax,\sseq@ymax);
%
\sseq@useclip
\pgfsetcolor{\sseq@gridcolor}
\pgfsetstrokeopacity{0.3} % We don't set low opacity for the other grids, but this one is visible even if it is very faint.
\sseq@grid@setstepandgridstep
%
% Use ifdim with cm to compare real scalars b/c tex is dumb.
% okay, now we need to be careful in order to avoid overflows. The hack we are using requires that the xvec and the yvec are equal
% because we can't apply these via lowlevelsynccm. However, xvec and yvec are the things that prevent overflows.
% What we need to do is set them both equal to the smaller value. Now the scale factor determines the size of the squares,
% so we mix in the grid steps. We also need to scale the larger scaled coordinate by the ratio of the two scales.
\ifdim\sseq@xscale cm<\sseq@yscale cm\relax
% x is smaller so set both x and y vecs to \sseq@xscale cm.
\pgfsetxvec{\pgfpoint{\sseq@xscale cm}{0cm}}
\pgfsetyvec{\pgfpoint{0cm}{\sseq@xscale cm}}
\def\sseq@xadjustscale{\sseq@xgridstep}
\def\sseq@yadjustscale{\sseq@yscale/\sseq@xscale*\sseq@ygridstep}
\def\sseq@stepscale{\sseq@xscale}
\else
\pgfsetxvec{\pgfpoint{\sseq@yscale cm}{0cm}}
\pgfsetyvec{\pgfpoint{0cm}{\sseq@yscale cm}}
\def\sseq@xadjustscale{(\sseq@xscale/\sseq@yscale*\sseq@xgridstep)}
\def\sseq@yadjustscale{\sseq@ygridstep}
\def\sseq@stepscale{\sseq@yscale}
\fi
\pgftransformxscale{\sseq@xadjustscale}
\pgftransformyscale{\sseq@yadjustscale}
% Now we have to put in some ridiculously complicated shift in order to get the bottom corner in the right place.
% I found this formula mostly by trial and error.
% The basic idea that we should be making something divisible by twice the grid step (which is the actual period of our grid)
% is reasonable enough, but what the heck are these other two terms for? I don't know either, thank god it works.
\pgftransformshift{\pgfpointxy{
floor((\sseq@xgridstep-1)/2)/\sseq@xgridstep
+ \ifodd\sseq@xgridstep\space 0 \else 0.5/\sseq@xgridstep\fi
+ mod(1+\sseq@xmin/\sseq@xgridstep,2*\sseq@xgridstep)
}{
floor((\sseq@ygridstep-1)/2)/\sseq@ygridstep
+ \ifodd\sseq@ygridstep\space 0\else 0.5/\sseq@ygridstep\fi
+ mod(1+\sseq@ymin/\sseq@ygridstep,2*\sseq@ygridstep)
}
}
% We use lowlevelsynccm to make the scale adjust the line width. Normally scaling doesn't affect line width, text size, etc, which is sensible.
% When you apply \pgflowlevelsynccm, pgf loses track of the coordinate matrix and it gets indiscriminately applied to everything.
% This is good for us, because we're doing this absurd thing where we make a checkerboard by drawing a really really fat line.
\pgflowlevelsynccm
\pgfsetlinewidth{1cm*\sseq@stepscale}
\pgfsetdash{{1cm*\sseq@stepscale}{1cm*\sseq@stepscale}}{1cm*\sseq@stepscale}
%
% Naturally some trial and error occurred here too.
% Note the huge multiples of \sseq@xgridstep I added in -- they probably aren't necessary, but I don't understand what's going on so whatever.
% The basic idea is that things need to be divisible by twice the grid step. The part I added in the shift above
% was the remainder when you divide \sseq@xmin by twice the grid step, now we need to add in the multiple of twice the grid step.
% The -0.5 is ensuring that the checkerboard boundaries lie at half-integer coordinates (I think).
\pgfpathgrid[stepx= 2cm*\sseq@stepscale,stepy=2cm*\sseq@stepscale]
{ \pgfpointxy
{ -0.5 + \sseq@intdivfloor{\numexpr\sseq@xmin - \sseq@xgridstep\relax}{2*\sseq@xgridstep}*2*\sseq@xgridstep + \sseq@xoffset - 50*\sseq@xgridstep }
{ -0.5 + \sseq@intdivfloor{\numexpr\sseq@ymin - \sseq@ygridstep\relax}{2*\sseq@ygridstep}*2*\sseq@ygridstep + \sseq@yoffset - 50*\sseq@ygridstep}
}{ \pgfpointxy
{ \sseq@xmax + \sseq@xoffset + 50*\sseq@xgridstep }
{ \sseq@ymax + \sseq@yoffset + 50*\sseq@ygridstep }
}
\pgfusepath{stroke}
\endpgfscope
\egroup
}
\def\sseq@grid@crossword{
\bgroup
\pgfscope
\sseq@useclip
\pgfsetcolor{\sseq@gridcolor}
\pgfsetlinewidth{\the\sseq@gridstrokethickness}
\sseq@grid@setstepandgridstep
%
% We don't want the grid to end with an extra line, so extend it by one half the step distance or
% \sseq@---gridpadding, whichever is shorter.
\sseq@grid@atmostgridstep\sseq@xminpadding{x}{\sseq@leftgridpadding}{1/2}
\sseq@grid@atmostgridstep\sseq@xmaxpadding{x}{\sseq@rightgridpadding}{1/2}
\sseq@grid@atmostgridstep\sseq@yminpadding{y}{\sseq@bottomgridpadding}{1/2}
\sseq@grid@atmostgridstep\sseq@ymaxpadding{y}{\sseq@topgridpadding}{1/2}
%
\pgftransformshift{\pgfpointxy{-\sseq@xgridstep/2}{-\sseq@ygridstep/2}}
\pgfpathgrid[stepx=\pgf@xb,stepy=\pgf@yb]
{ \pgfpointxy
{ \sseq@xmin - \sseq@xminpadding + 0.01 + \sseq@xoffset + \sseq@xgridstep/2 }
{ \sseq@ymin - \sseq@yminpadding + 0.01 + \sseq@yoffset + \sseq@ygridstep/2 } }
{ \pgfpointxy
{ \sseq@xmax + \sseq@xmaxpadding - 0.01 + \sseq@xoffset + \sseq@xgridstep/2 }
{ \sseq@ymax + \sseq@ymaxpadding - 0.01 + \sseq@yoffset + \sseq@ygridstep/2 } }
\pgfusepath{stroke}
\endpgfscope
\egroup
}
\def\sseq@grid@go{
\bgroup
\pgfscope
\sseq@useclip
\pgfsetcolor{\sseq@gridcolor}
\pgfsetlinewidth{\the\sseq@gridstrokethickness}
\sseq@grid@setstepandgridstep
%
% We don't want the grid to end with an extra line, so extend it by one step distance or
% \sseq@---gridpadding, whichever is shorter.
\sseq@grid@atmostgridstep\sseq@xminpadding{x}{\sseq@leftgridpadding}{1}
\sseq@grid@atmostgridstep\sseq@xmaxpadding{x}{\sseq@rightgridpadding}{1}
\sseq@grid@atmostgridstep\sseq@yminpadding{y}{\sseq@bottomgridpadding}{1}
\sseq@grid@atmostgridstep\sseq@ymaxpadding{y}{\sseq@topgridpadding}{1}
%
\pgfpathgrid[stepx=\pgf@xb,stepy=\pgf@yb]
{ \pgfpointxy
{ \sseq@xmin - \sseq@xminpadding + 0.01 + \sseq@xoffset }
{ \sseq@ymin - \sseq@yminpadding + 0.01 + \sseq@yoffset } }
{ \pgfpointxy
{ \sseq@xmax + \sseq@xmaxpadding - 0.01 + \sseq@xoffset }
{ \sseq@ymax + \sseq@ymaxpadding - 0.01 + \sseq@yoffset }
}
\pgfusepath{stroke}
\endpgfscope
\egroup
}
\def\sseq@grid@none{}
\def\sseq@grid@dots{
\bgroup
\pgfscope
\pgfgettransform\sseq@savetransform
\pgfgettransformentries{\sseq@a}{\sseq@b}{\sseq@c}{\sseq@d}{\sseq@u}{\sseq@v}
\pgfsettransform\sseq@savetransform
\sseq@useclip
\pgftransformshift{\pgfqpoint{-1.5cm}{-0.5cm}}
\pgfsetdash{{1pt}{\sseq@a*1cm-1pt}}{0.5cm+.5pt}
\pgfsetlinewidth{1pt}
\sseq@tempy=\sseq@ymin\relax
\advance\sseq@tempy\m@ne
\loop
\advance\sseq@tempy\@ne
\pgfpathmoveto{\pgfpointxy{\sseq@xmin + 0.5/\sseq@a}{\the\sseq@tempy}}
\pgfpathlineto{\pgfpointxy{\sseq@xmax + 1.01 }{\the\sseq@tempy}}
\ifnum\sseq@tempy<\sseq@ymax\repeat
%\pgfpathgrid[stepx=1cm,stepy=1cm]{\pgfpoint{-0.5cm}{-0.5cm}}{\pgfpoint{\xmax cm-0.5cm}{\ymax cm-0.5cm}}
\pgfusepath{stroke}
\endpgfscope
\egroup
}
%%%
%%% Draw Classes
%%%
%%% Class offsets
\sseqnewclasspattern{standard}{
(0,0);
(-0.13,0)(0.13,0);
(-0.2,0)(0,0)(0.2,0);
(-0.13,-0.13)(0.13,-0.13)(-0.13,0.13)(0.13,0.13);
(-0.16,-0.16)(0.16,-0.16)(-0.16,0.16)(0.16,0.16)(0,0);
(-0.13,-0.2)(-0.13,0)(-0.13,0.2)(0.13,-0.2)(0.13,0)(0.13,0.2);
}
\sseqnewclasspattern{linear}{
(0,0);
(-0.13,0)(0.13,0);
(-0.2,0)(0,0)(0.2,0);
(-0.3,0)(-0.1,0)(0.1,0)(0.3,0);
(-0.4,0)(-0.2,0)(0,0)(0.2,0)(0.4,0);
(-0.5,0)(-0.3,0)(-0.1,0)(0.1,0)(0.3,0)(0.5,0);
}
\def\sseq@offset#1#2{
\sseq@eval{\@nx\pgftransformshift{
\@nx\pgfqpointxy
{ \csname sseq@\sseq@classpattern xoffset#1/#2\endcsname }
{ \csname sseq@\sseq@classpattern yoffset#1/#2\endcsname }
}}
}
\def\sseq@class@getparts#1(#2,#3,#4)[#5].{
\sseq@seterrorannotation@drawing{#1}{#2}{#3}{#4}{#5}
\def\sseq@thisclassname{class.(#2,#3,#4)}
\def\sseq@thisnodename{sseq{#2,#3,#4}}
\def\sseq@thispos{(#2,#3)}
\edef\sseq@thisposnum{\sseq@obj{class.(#2,#3,#4).n}}
\def\sseq@thisclassnum{#5}
\sseq@tempx=#2\relax
\sseq@tempy=#3\relax
}
\def\sseq@tooltip@wrapper#1#2{%
\edef\temp{\detokenize\@xpthree{#2}}%
\edef\temp{\@xp\sseqtooltip@replaceslashes\@xp{\temp}}%
\sseq@eval{\@nx\pdftooltip{\unexpanded{#1}}{\temp}}%
}
\bgroup\lccode`\!=`\\\lowercase{\egroup
\def\sseqtooltip@replaceslashes#1{\sseqtooltip@replaceslashes@#1!\sseq@nil}
\def\sseqtooltip@replaceslashes@#1!#2{%
#1%
\ifx\sseq@nil#2\@xp\@gobble\else
\@nx\@nx\@nx\textbackslash
\@xp\sseqtooltip@replaceslashes@
\fi#2%
}
}
% #1 -- the name of the node object
% Someday I should document this horrible mess of code here
\newif\ifsseq@permanentcycle
\newcount\sseq@totalclassesdrawn
\AtEndDocument{\message{Total classes: \the\sseq@totalclassesdrawn}}
\def\sseq@class@drawnode#1{%
\global\advance\sseq@totalclassesdrawn\@ne
\begingroup
\sseq@class@getparts#1.
\sseq@needstikzfalse
\sseq@options@firstpassmode
\sseq@thesseqstyle
\sseq@theclassstyle
\ifnum\sseq@obj{#1.page}=\sseq@infinitycount
\sseq@thepermanentcyclestyle
\else
\sseq@thetransientcyclestyle
\ifsseq@thispage
\sseq@thethispagecyclestyle
\fi
\fi
\the\sseq@scope@toks
\sseq@obj{#1.needstikz}
%
\sseq@outofrangetrue\relax % Mysterious that we need this \relax here...
\ifnum\sseq@tempx<\sseq@xmaxpp\relax\ifnum\sseq@tempx>\sseq@xminmm\relax\ifnum\sseq@tempy<\sseq@ymaxpp\relax\ifnum\sseq@tempy>\sseq@yminmm\relax
\sseq@outofrangefalse
\pgfscope
\let\tikz@options\pgfutil@empty
\let\tikz@alias=\pgfutil@empty
\def\pgfkeysdefaultpath{/sseqpages/class/}
\sseq@options@secondpassmode
\sseq@thesseqstyle
\sseq@theclassstyle
\ifnum\sseq@obj{#1.page}=\sseq@infinitycount
\sseq@permanentcycletrue % This is to communicate with family style code...
\sseq@thepermanentcyclestyle
\else
\sseq@permanentcyclefalse
\sseq@thetransientcyclestyle
\ifsseq@thispage
\sseq@thethispagecyclestyle
\fi
\fi
\def\sseq@collections@featuretype{class}
\the\sseq@scope@toks
\sseq@obj{#1.options}
\pgftransformshift{\pgfqpointxy{\numexpr\sseq@tempx +\sseq@xoffset-\sseq@x\relax}{\numexpr\sseq@tempy + \sseq@yoffset-\sseq@y\relax}}
\iftikz@fullytransformed\pgfgettransform{\savetransform}\fi
\pgftransformresetnontranslations
\sseq@globalrotatetransform
\sseq@classplacementtransform
\sseq@obj@ifdef{#1.offset}{\sseq@obj{#1.offset}}{%
\sseq@offset{\sseq@thisposnum}{\sseq@obj{partcoord.\sseq@thispos.numnodes}}%
}%
\iftikz@fullytransformed\pgfsettransform{\savetransform}\else\pgftransformresetnontranslations\ifsseq@rotatelabels\sseq@globalrotatetransform\fi\fi
\tikz@options
% the value of \sseq@class@showname comes from styles. If there was a local option with showname, it's stored in #1.showname.
% local value takes priority.
\let\sseq@classlabelnodes\pgfutil@empty
\edef\sseq@classnodetextoptions{\sseq@obj@ifdef{#1.nodetext.options}{\@xptwo\@nx\sseq@obj{#1.nodetext.options}}{}}
\edef\sseq@classnodetext{\sseq@obj@ifdef{#1.nodetext}{\@xptwo\@nx\sseq@obj{#1.nodetext}}{}}
\sseq@obj@ifdef{#1.showname}{\sseq@lettoobj\sseq@class@showname{#1.showname}}{}
\ifcsname sseq@class@showname\endcsname
\sseq@obj@ifdef{#1.name}{
\sseq@eval{\@nx\sseq@handleclassquotes@inner{\sseq@obj{#1.name}}{\sseq@class@showname}}
}{}
\fi
\ifsseq@needstikz
\let\sseq@mode\tikz@mode
\tikzset{every text node part/.code/.expand once={\sseq@globalrotatetransform\sseq@classnodetextoptions{}}}%
\sseq@eval{%
\@nx\node[/utils/exec={\let\@nx\tikz@mode\@nx\sseq@mode},
/handlers/first char syntax/the character "/.initial=\@nx\sseq@handlequote
] (\sseq@thisnodename) {\unexpanded\@xp{\sseq@classnodetext}}
[every text node part/.code={}];
}%
\else
\tikz@node@textfont
\sseq@setnodetext{\sseq@classnodetext}{\sseq@classnodetextoptions}
\let\tikz@fig@name\sseq@thisnodename
\pgfmultipartnode{\tikz@shape}{\tikz@anchor}{\tikz@fig@name}{\sseq@drawnode}%
\tikz@alias
\fi
\sseq@obj{#1.labelnodes}
\sseq@classlabelnodes % classlabelnodes comes from show name
\sseq@obj@ifdef{#1.tooltip}{
\pgfpointanchor{\sseq@thisnodename}{west}
\pgf@xa=\pgf@x
\pgfpointanchor{\sseq@thisnodename}{south}
\pgf@ya=\pgf@y
%
\pgf@process{\pgfpointdiff{\pgfpointtransformed{\pgfpointanchor{\sseq@thisnodename}{west}}}{\pgfpointtransformed{\pgfpointanchor{\sseq@thisnodename}{east}}}}
\pgf@xb=\pgf@x
\pgf@process{\pgfpointdiff{\pgfpointtransformed{\pgfpointanchor{\sseq@thisnodename}{south}}}{\pgfpointtransformed{\pgfpointanchor{\sseq@thisnodename}{north}}}}
\pgf@yb=\pgf@y
%
\setbox\tikz@tempbox=\hbox{
\pgfinterruptpicture
\sseqtooltip{\rule{\pgf@xb}{0pt}\rule{0pt}{\pgf@yb}}{\sseq@obj{#1.tooltip}}
\endpgfinterruptpicture
}
{%
\pgftransformshift{\pgfqpoint{\pgf@xa}{\pgf@ya}}%
\pgfapproximatenonlineartransformation%
\pgfqboxsynced{\tikz@tempbox}%
}%
}{}
\endpgfscope
\fi\fi\fi\fi
\ifsseq@outofrange
\sseq@eval{\@nx\pgftransformshift{\@nx\pgfqpointxy{\numexpr\sseq@tempx+\sseq@xoffset-\sseq@x\relax}{\numexpr\sseq@tempy+\sseq@yoffset-\sseq@y\relax}}}%
\pgftransformresetnontranslations
\sseq@globalrotatetransform
\sseq@classplacementtransform
\sseq@offset{\sseq@thisposnum}{\sseq@obj{partcoord.\sseq@thispos.numnodes}}
\pgfcoordinate{\sseq@thisnodename}{\pgfpointorigin}%
\fi
\endgroup
}
% #1 -- label text
% #2 -- options
\def\sseq@setnodetext#1#2{%
\setbox\pgfnodeparttextbox=\hbox{%
\pgfscope%
#2
\tikzset{every text node part/.try}%
\ifx\tikz@textopacity\pgfutil@empty%
\else%
\pgfsetfillopacity{\tikz@textopacity}%
\pgfsetstrokeopacity{\tikz@textopacity}%
\fi%
\pgfinterruptpicture
\ifx\tikz@text@width\pgfutil@empty%
\tikz@textfont%
\else%
\begingroup%
\pgfmathsetlength{\pgf@x}{\tikz@text@width}%
\pgfutil@minipage[t]{\pgf@x}\leavevmode\hbox{}%
\tikz@textfont%
\tikz@text@action%
\fi%
\ifx\tikz@textcolor\pgfutil@empty%
\else%
\pgfutil@colorlet{.}{\tikz@textcolor}%
\fi%
\pgfsetcolor{.}%
\tikz@atbegin@node%
#1%
\tikz@atend@node%
\ifx\tikz@text@width\pgfutil@empty%
\else%
\pgfutil@endminipage%
\endgroup%
\fi%
\endpgfinterruptpicture
\endpgfscope%
}%
\ifx\tikz@text@width\pgfutil@empty%
\else%
\pgfmathsetlength{\pgf@x}{\tikz@text@width}%
\wd\pgfnodeparttextbox=\pgf@x%
\fi%
\ifx\tikz@text@height\pgfutil@empty%
\else%
\pgfmathsetlength{\pgf@x}{\tikz@text@height}%
\ht\pgfnodeparttextbox=\pgf@x%
\fi%
\ifx\tikz@text@depth\pgfutil@empty%
\else%
\pgfmathsetlength{\pgf@x}{\tikz@text@depth}%
\dp\pgfnodeparttextbox=\pgf@x%
\fi%
}
\def\sseq@drawnode{%
\pgfutil@tempdima=\pgflinewidth%
{%
\tikz@mode%
%\iftikz@mode@clip \sseq@error@internal{Clip shouldn't happen here, but this error should be caught earlier}{}\fi %
\iftikz@mode@draw%
\iftikz@mode@double%
% Change line width
\begingroup%
\pgfsys@beginscope%
\tikz@double@setup%
\fi%
\fi%
%
% Step 10: Do stroke/fill as needed
%
\sseq@eval{\noexpand\pgfusepath{%
\iftikz@mode@fill fill,\fi%
\iftikz@mode@draw draw,\fi%
}}%
%
% Step 11: Double stroke, if necessary
%
\iftikz@mode@draw%
\iftikz@mode@double%
\pgfsys@endscope%
\endgroup%
\fi%
\fi
}%
\global\pgflinewidth=\pgfutil@tempdima%
}
%%% Labels
% #1 -- label text
% #2 -- options
\def\sseq@drawlabel#1#2{
\bgroup\pgfscope
\def\tikz@mode{}
\let\sseq@tikz@transform@save\tikz@transform
\pgfkeyssetvalue{/pgf/inner xsep}{2pt}
\pgfkeyssetvalue{/pgf/inner ysep}{2pt}
\def\tikz@shape{rectangle}
\let\tikz@transform\empty % The next line was set up to fix the classlabelstyle glitch
\sseq@options@secondpassmode
\sseq@thesseqstyle\sseq@thelabelstyle\sseq@theclasslabelstyle#2
\tikz@options
\pgftransformreset
\pgftransformshift{\tikz@node@at}
\tikz@lib@pos@call
\tikz@transform
\tikz@mode
\let\tikz@transform\sseq@tikz@transform@save
\sseq@setnodetext{\sseq@labeltextfn{#1}}{}
\pgfmultipartnode{\tikz@shape}{\tikz@anchor}{label}{\sseq@drawnode}%
\ifsseq@pin
\def\sseq@pinoptions{}
\let\tikz@options\empty
\let\tikz@mode\empty
\sseq@thepinstyle
#2
\sseq@pinoptions
\tikz@options
\tikz@mode
\sseq@drawedge@findsourcetarget{\tikz@fig@name}{}{label}{}
\pgfpathmoveto{\sseq@sourcecoord}%
\pgfpathlineto{\sseq@targetcoord}%
\sseq@eval{\noexpand\pgfusepath{%
draw
\iftikz@mode@fill fill,\fi
\iftikz@mode@draw draw,\fi
}}%
\fi
\endpgfscope\egroup
}
%%%
%%% Drawing edges
%%%
\def\sseq@ifinrange(#1){\sseq@ifinrange@#1,\sseq@nil}
\def\sseq@ifinrange@#1,#2,#3\sseq@nil{%
\sseq@tempx=#1\relax\sseq@tempy=#2\relax
\sseq@outofrangetrue
\ifnum\sseq@tempx<\sseq@xmaxpp\relax\ifnum\sseq@tempx>\sseq@xminmm\relax\ifnum\sseq@tempy<\sseq@ymaxpp\relax\ifnum\sseq@tempy>\sseq@yminmm\relax
\sseq@outofrangefalse
\fi\fi\fi\fi
\ifsseq@outofrange
\@xp\pgfutil@secondoftwo
\else
\@xp\pgfutil@firstoftwo
\fi
}
% #1 -- source node
% #2 -- source anchor
% #3 -- target node
% #4 -- target anchor
% Calculate actual start and end of the edge (node borders), return the results stored in \sseq@sourcecoord, \sseq@targetcoord
\def\sseq@drawedge@findsourcetarget#1#2#3#4{
\edef\sseq@edgesourceanchor{#2}
\edef\sseq@edgetargetanchor{#4}
\let\tempaf\pgfutil@empty
\ifx\sseq@edgesourceanchor\pgfutil@empty % Check that the source doesn't have a specified anchor
\def\tempa{\pgfpointanchor{#1}{center}}% if so, start by taking the center of that coordinate
\else
\edef\tempa{\@nx\pgfpointanchor{#1}{\sseq@edgesourceanchor}} % If it has an anchor, use that
\let\tempaf\tempa
\fi
\ifx\sseq@edgetargetanchor\pgfutil@empty % check that the target doesn't have a specified anchor
\def\tempb{\pgfpointshapeborder{#3}{\tempa}}% if so, our end point is the point on the boundary of node b that is in the direction of our initial start coordinate
\else
\edef\tempb{\@nx\pgfpointanchor{#3}{\sseq@edgetargetanchor}}% If it has a specified anchor, use that
\fi
\let\tempbf\tempb
\ifx\tempaf\pgfutil@empty%
\def\tempaf{\pgfpointshapeborder{#1}{\tempb}}%
\fi
\let\sseq@sourcecoord\tempaf
\let\sseq@targetcoord\tempbf
}
\def\sseq@fullcoord@to@partialcoord(#1){\sseq@fullcoord@to@partialcoord@#1,\@nil}
\def\sseq@fullcoord@to@partialcoord@#1,#2,#3\@nil{{#1cm}{#2cm}}
% #1 -- source (full)
% #2 -- target (full)
% #3 -- which type of edge (either "structline" or "differential")
% #4 -- options
\def\sseq@drawedge(#1)(#2)#3#4{%
\begingroup\pgfscope
% If either class is part of a family we aren't drawing, don't draw the edge either.
\expandafter\ifx\csname pgf@sh@pi@sseq{#1}\endcsname\pgfpictureid\else
\@xp\sseq@break
\fi
\expandafter\ifx\csname pgf@sh@pi@sseq{#2}\endcsname\pgfpictureid\else
\@xp\sseq@break
\fi
\def\sseq@edgetype{#3}
\let\sseq@collections@featuretype\sseq@edgetype
\let\sseq@edgesourceanchor\pgfutil@empty
\let\sseq@edgetargetanchor\pgfutil@empty
%
\sseq@needstikzfalse
\def\pgfkeysdefaultpath{/sseqpages/#3/}%
\sseq@options@bothpassmode
\sseq@thesseqstyle
\sseq@theedgestyle\csname sseq@the#3style\endcsname\the\sseq@scope@toks
#4%
\csname sseq@collections@#3@hook\endcsname
\pgftransformshift{\pgfqpointxy{-\the\sseq@x}{-\the\sseq@y}}%
% puts results into \sseq@sourcecoord and \sseq@targetcoord
\sseq@drawedge@findsourcetarget{sseq{#1}}{\sseq@edgesourceanchor}{sseq{#2}}{\sseq@edgetargetanchor}
%
\tikz@options
\tikz@mode
\def\temparrowstartspec{}%
\def\temparrowendspec{}%
\pgfcoordinate{tempa}{\sseq@sourcecoord}%
\pgfcoordinate{tempb}{\sseq@targetcoord}%
\pgftransformreset
\sseq@outofrangefalse
\sseq@ifinrange(#1){}{
\edef\temparrowstartspec{\@nx\pgfsetarrowsstart{\csname sseq@runoffarrow@start@#3@spec\endcsname}}
\sseq@outofrangetrue
}%
\sseq@ifinrange(#2){}{
\edef\temparrowendspec{\@nx\pgfsetarrowsend{\csname sseq@runoffarrow@end@#3@spec\endcsname}}
\sseq@outofrangetrue
}
\ifsseq@outofrange
\sseq@handleoffpageedge{#1}{#2}%
\fi
\ifsseq@drawedge
% TODO: should some sort of transformation manipulation be here? Maybe allow user to specify preference?
% Don't draw dots on very short segments
\pgfpointdiff{\sseq@targetcoord}{\sseq@sourcecoord}
\pgfmathveclen{\pgf@x}{\pgf@y}%
\@xp\pgfmathint\@xp{\pgfmathresult}%
\ifnum\pgfmathresult<10\relax%%17? % TODO: Fix this predicate
\tikzset{every text node part/.append code={\pgfsetcolor{white}}}% I wonder why this is here...
\ifx\temparrowstartspec\pgfutil@empty
\else
\def\temparrowstartspec{\pgfsetarrowsstart{}}%
\fi
\ifx\temparrowendspec\pgfutil@empty
\else
\def\temparrowendspec{\pgfsetarrowsend{}}%
\fi
\fi
\ifsseq@needstikz
\draw[/sseqpages,
/utils/exec={\sseq@thesseqstyle\sseq@theedgestyle\csname sseq@the#3style\endcsname\the\sseq@scope@toks
\temparrowstartspec\temparrowendspec #4}%
] (tempa) to (tempb);%
\else
\temparrowstartspec
\temparrowendspec
\pgfpathmoveto{\pgfpointanchor{tempa}{center}}%
\pgfpathlineto{\pgfpointanchor{tempb}{center}}%
\sseq@eval{\noexpand\pgfusepath{%
\iftikz@mode@fill fill,\fi
\iftikz@mode@draw draw,\fi
}}%
\fi
\fi
\sseq@breakpoint
\endpgfscope\endgroup
}
% TODO: this macro is super expensive. Make it faster
\def\sseq@handleoffpageedge#1#2{
\pgfpathmoveto{\sseq@sourcecoord}%
\pgfpathlineto{\sseq@targetcoord}%
\pgfgetpath\thispath
\pgfusepath{discard}%
\pgfintersectionofpaths{\pgfsetpath\sseq@theclippath}{\pgfsetpath\thispath}%
\ifcase\pgfintersectionsolutions\relax
% No intersections, but one or both endpoints may be out of range but still in clipping region due to scaling. Add ellipses as appropriate.
\sseq@ifinrange(#1){% If the first endpoint is in range, the second must be out of range b/c sseq@outofrange is true.
%\edef\temparrowendspec{\@nx\pgfsetarrowsend{\csname sseq@runoffarrow@end@#3@spec\endcsname}}
}{%
\sseq@ifinrange(#2){}{\sseq@drawedge@handletrickyedge}% uh-oh, both ends are out of range
}%
\or
\sseq@ifinrange(#1){% If the startpoint is in range, the intersection must be the end.
\def\sseq@targetcoord{\pgfpointintersectionsolution{1}}
\pgfcoordinate{tempb}{\sseq@targetcoord}
}{%
\sseq@ifinrange(#2){% If the startpoint is out of range and the endpoint is in range, the intersection must be the start
\def\sseq@sourcecoord{\pgfpointintersectionsolution{1}}%
\pgfcoordinate{tempa}{\sseq@sourcecoord}%
}{\sseq@drawedge@handletrickyedge}% Uh-oh, both ends are out of range.
}
\or% an orphan
\ifsseq@draworphanedges
\sseq@drawedge@handleorphan
\else
\sseq@drawedgefalse % Don't draw "orphaned edges"
\fi
\else