如何在 TikZ 中绘制和插入符号

Question

我想在 TikZ 中制作如下所示的符号。

\documentclass{standalone}
\usepackage{tikz}
\begin{document}

\begin{tikzpicture}
    \draw[thick] (0,0) rectangle (3,1);
    \draw[thick] (0.5,0) -- (0.5,1);
    \draw[thick] (0.5,0.5) -- (3.5,0.5);
    \draw[thick] (0.25,0) -- +(0,-0.3);
    \draw[thick] (2.75,0) -- +(0,-0.3);
\end{tikzpicture}
\end{document}

我需要插入它（比如说圆柱) 在 TikZ 代码中，如下所示：

\draw[cylinder] (2,2); % this inserts the symbol at point (2,2)

Answer 1

正如 John Wickerson 所建议的，您可以编写\cylinder宏：

\documentclass{standalone}
\usepackage{tikz}

\newcommand\cylinder[2][]{
  \begin{scope}[shift={(#2)}]
    \draw[#1] (0,0) rectangle (3,1);
    \draw[#1] (0.5,0) -- (0.5,1);
    \draw[#1] (0.5,0.5) -- (3.5,0.5);
    \draw[#1] (0.25,0) -- +(0,-0.3);
    \draw[#1] (2.75,0) -- +(0,-0.3);
  \end{scope}
}

\begin{document}
\begin{tikzpicture}
  \cylinder{0,0}
  \cylinder[draw=blue,very thick]{2,2}
  \coordinate (A) at (4,4);
  \cylinder[draw=red,line width=5pt]{A}
\end{tikzpicture}
\end{document}

结果：