如何在两个 tikzpictures 之间画一条垂直线

Question

我正在并排绘制两个 tikzpictures，如下所示：

\documentclass[standalone]{beamer}
\usepackage{tikz}
\usetikzlibrary{arrows.meta, shadows}
\usepackage{default}
\begin{document}
\begin{frame}
    \begin{center}
    \begin{tikzpicture}[scale=0.6]
    \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (1) at (2.5,-1.5) {1};
    \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (2) at (1,-3) {2};
    \path (1) edge [->] node {} (2);
    \end{tikzpicture}
    \hspace{1cm}
    \vspace{-1cm}
    \begin{tikzpicture}[scale=0.6]
    \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (2) at (2,1) {1};
    \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (1) at (0.5, -0.5) {2};
    \path (1) edge [->] node {} (2);
    \end{tikzpicture}
\end{center}
\end{frame}
\end{document}

我怎样才能在两者之间画一条垂直的黑线？

Answer 1

我在一个tikzpicture环境中构建了所有内容。两个图完全相同（箭头方向除外），我只需将每个图表放入一个scope环境中，并赋予它们名称fig 1和fig 2。第二个向右移动。

\begin{scope}[local bounding box=fig 1]
\begin{scope}[xshift=5cm,local bounding box=fig 2]

为了在两者之间画一条线，我计算了穿过两者的线。

\draw ($(fig 1.north east)!.5!(fig 2.north west)$) --($(fig 1.south east)!.5!(fig 2.south west)$);

\documentclass[standalone]{beamer}
\usepackage{tikz}
\usetikzlibrary{arrows.meta, shadows,calc}
%\usepackage{default}
\begin{document}
\begin{frame}
    \begin{center}
    \begin{tikzpicture}[scale=0.6]
    \begin{scope}[local bounding box=fig 1]
        \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (1) at (2.5,-1.5) {1};
    \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (2) at (1,-3) {2};
    \path (1) edge [->] node {} (2);
    \end{scope}

%    \end{tikzpicture}
%    \hspace{1cm}
%    \vspace{-1cm}
%    \begin{tikzpicture}[scale=0.6]

    \begin{scope}[xshift=5cm,local bounding box=fig 2]
        \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (1) at (2.5,-1.5) {1};
    \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (2) at (1,-3) {2};
    \path (1) edge [<-] node {} (2);
    \end{scope}

\draw ($(fig 1.north east)!.5!(fig 2.north west)$) --($(fig 1.south east)!.5!(fig 2.south west)$);

    \end{tikzpicture}
\end{center}
\end{frame}
\end{document}

Answer 2

您可以在表格中插入两个 tikz 图片：

\documentclass[standalone]{beamer}
\usepackage{tikz}
\usetikzlibrary{arrows.meta, shadows}
%\usepackage{default}

\begin{document}
\begin{frame}
    \begin{center}
    \begin{tabular}{c@{\quad}|@{\quad}c}
    \begin{tikzpicture}[scale=0.6]
    \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (1) at (2.5,-1.5) {1};
    \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (2) at (1,-3) {2};
    \path (1) edge [->] node {} (2);
    \end{tikzpicture}
    &
    \begin{tikzpicture}[scale=0.6]
    \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (2) at (2,1) {1};
    \node[shape=circle,draw=black,fill=white, drop shadow,minimum size=1cm] (1) at (0.5, -0.5) {2};
    \path (1) edge [->] node {} (2);
    \end{tikzpicture}    
    \end{tabular}
\end{center}
\end{frame}
\end{document}