TikZ and PGF Manual
Libraries
75 Through Library¶
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TikZ Library through ¶
\usetikzlibrary{through} %
LaTeX
and plain
TeX
\usetikzlibrary[through] % ConTeXt
This library defines keys for creating shapes that go through given points.
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1. The inner sep and the outer sep are set to zero.
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2. The shape is set to circle.
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3. The minimum size is set such that the circle around the center of the node (which is specified using at), goes through ⟨coordinate⟩.
When this key is given as an option to a node, the following happens:
\usetikzlibrary {through}
\begin{tikzpicture}
\draw[help lines] (0,0) grid
(3,2);
\node (a) at
(2,1.5) {$a$};
\node [draw] at
(1,1) [circle through={(a)}] {$c$};
\end{tikzpicture}