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Optimize path decoration with redundancy check #1

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Optimize path decoration with redundancy check #1

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20 changes: 19 additions & 1 deletion tex/generic/pgf/modules/pgfmoduledecorations.code.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -637,6 +637,12 @@
\pgfgetpath\pgfdecoratedpath%
\pgfsetpath\pgfdecorateexistingpath%
%
% Restore the last path coordinates for the automaton's
% redundancy check.
%
\pgf@process{\pgfpoint@decorate@existingpathlast}
\global\pgf@path@lastx=\pgf@x
\global\pgf@path@lasty=\pgf@y
\ifx\pgfdecoratedpath\pgfutil@empty%
\pgferror{I cannot decorate an empty path}%
\else%
Expand Down Expand Up @@ -1238,7 +1244,19 @@
\pgf@decorate@is@closepath@false%
\pgf@decorate@currentinputsegmentobject%
\ifx\pgfdecorationcurrentinputsegment\pgfdecorationinputsegmentmoveto%
\pgfpathmoveto{\pgf@decorate@inputsegment@first}%
%
% Avoid a \pgfpathmoveto if we are already in the exact same
% coordinate.
%
\pgf@process{\pgf@decorate@inputsegment@first}
\ifdim\pgf@x=\pgf@path@lastx\relax%
\ifdim\pgf@y=\pgf@path@lasty\relax%
\else%
\pgfpathmoveto{\pgf@decorate@inputsegment@first}%
\fi%
\else%
\pgfpathmoveto{\pgf@decorate@inputsegment@first}%
\fi%
\let\pgfdecorationpreviousinputsegment\pgfdecorationcurrentinputsegment%
\let\pgf@decorate@currentinputsegmentobject\pgf@decorate@nextinputsegmentobject%
\pgf@decorate@getnextinputsegmentobject\pgf@decorate@nextinputsegmentobject%
Expand Down