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36 lines
1.0 KiB
36 lines
1.0 KiB
% Copyright 2006 by Till Tantau
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%
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% This file may be distributed and/or modified
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%
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% 1. under the LaTeX Project Public License and/or
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% 2. under the GNU Public License.
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%
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% See the file doc/generic/pgf/licenses/LICENSE for more details.
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\ProvidesFileRCS{tikzlibrarythrough.code.tex}
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\tikzset{circle through/.code={%
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\pgfkeysalso{shape=circle,inner sep=0pt,outer sep=0pt}%
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% Save transformations (correct?)
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\pgfgettransform{\tikz@lib@saved@transform}%
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\tikz@scan@one@point\tikz@lib@circle@through#1%
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}}%
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\def\tikz@lib@circle@through#1{%
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\tikz@addoption{%
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{%
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\pgfsettransform{\tikz@lib@saved@transform}%
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\pgf@process{\pgfpointtransformed{#1}}%
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\pgf@xa=\pgf@x%
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\pgf@ya=\pgf@y%
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\pgf@process{\pgfpointtransformed{\tikz@node@at}}%
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\advance\pgf@xa by-\pgf@x%
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\advance\pgf@ya by-\pgf@y%
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\pgfmathparse{2*veclen(\the\pgf@xa,\the\pgf@ya)}%
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\global\let\tikz@lib@circle@size=\pgfmathresult%
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}%
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\pgfset{/pgf/minimum size/.expanded=\tikz@lib@circle@size}%
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}%
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}%
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