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如何将一张 TikZ 图片放在另一张之上？

tag-icon • tag-icon tikz-pgf tikz-styles tikz-arrows
如何将一张 TikZ 图片放在另一张之上？

我的幻灯片上有两张TikZ图片，现在它们并排显示。我想让第一张图片位于另一张图片之上。另外，我想在 Alice 和 Bob 之间画三支箭头，但目前从 Alice 到 Bob 的箭头中的文本“0或1”位置不正确，我还想在箭头下方再画一支从 Bob 到 Alice 的箭头，并附上文本$\sigma$。

在此处输入图片描述

我怎样才能实现这些目标？

    \documentclass[aspectratio=169]{beamer}
    
    \usepackage{tikz}
    \usetikzlibrary{
        arrows,
        calc,
        chains,
        decorations,
        decorations.text,
        decorations.pathmorphing,
        matrix,
        positioning,
        shapes,
        tikzmark
    }
    \usepackage{tikzpeople}
    
    \begin{document}
    
    \begin{frame}{Protocol View}
\begin{tikzpicture}
        \node (e0) at (0,0) {$E_0$};
        \node (epk) at (6,0) {$E_{pk}$};
        \path[->] (e0) edge node[auto]{$\mathfrak{s}$} (epk);
        \uncover<2->{
          \node (er) at (3,3) {$E_r$};
          \path[->] (e0) edge node[auto]{$\mathfrak{r}$} (er);
        }
        \uncover<4->{
          \path[dashed,->] (epk) edge node[auto,swap]{$\mathfrak{r}\cdot\mathfrak{s}^{-1}$} (er);
          \node (b0) at (0,3) {$b = 0$};
          \node (b1) at (6,3) {$b = 1$};
        }
\end{tikzpicture}
\begin{tikzpicture}[node distance=5cm]
            % nodes
            \node[alice,minimum size=1cm,] (s) at (0,0) {Alice};
            \node[bob,minimum size=1cm,right of=s] (r) {Bob};
            % paths
            \draw [->,visible on=<2->] (r) -- node [text width=2.5cm,midway,above,align=center] {$E_r$} (s);
            \draw [->,visible on=<4->] ($(s.east)+(1em,-1em)$) -- node [text width=2.5cm,midway,align=center] {$0$ or $1$} ($(r.west)+(-1em,-1em)$);
            %\draw [->,visible on=<5->] ()
        \end{tikzpicture}
\end{frame}
    
    \end{document}

答案1

这将起作用：

\documentclass[aspectratio=169]{beamer}

\usepackage{tikz}
\usetikzlibrary{
    arrows,
    calc,
    chains,
    decorations,
    decorations.text,
    decorations.pathmorphing,
    matrix,
    positioning,
    shapes,
    tikzmark
}
\usepackage{tikzpeople}

\begin{document}

\begin{frame}{Protocol View}
  \begin{center}
    \begin{tikzpicture}
    \node (e0) at (0,0) {$E_0$};
    \node (epk) at (6,0) {$E_{pk}$};
    \path[->] (e0) edge node[auto]{$\mathfrak{s}$} (epk);
    \uncover<2->{
      \node (er) at (3,3) {$E_r$};
      \path[->] (e0) edge node[auto]{$\mathfrak{r}$} (er);
    }
    \uncover<4->{
      \path[dashed,->] (epk) edge node[auto,swap]{$\mathfrak{r}\cdot\mathfrak{s}^{-1}$} (er);
      \node (b0) at (0,3) {$b = 0$};
      \node (b1) at (6,3) {$b = 1$};
    }
\end{tikzpicture}

\begin{tikzpicture}[node distance=5cm]
        % nodes
        \node[alice,minimum size=1cm,] (s) at (0,0) {Alice};
        \node[bob,minimum size=1cm,right of=s] (r) {Bob};
        % paths
        \draw [->,visible on=<2->] (r) -- node [text width=2.5cm,midway,above,align=center] {$E_r$} (s);
        \draw [->,visible on=<4->] ($(s.east)+(1em,-1.3em)$) -- node [text width=2.5cm,midway,align=center,above] {$0$ or $1$} ($(r.west)+(-1em,-1.3em)$);
        \draw [->,visible on=<4->] ($(s.east)+(1em,-2.8em)$) -- node [text width=2.5cm,midway,align=center,above] {$0$ or $1$} ($(r.west)+(-1em,-2.8em)$);
        %\draw [->,visible on=<5->] ()
    \end{tikzpicture}
  \end{center}
\end{frame}
\end{document}

我所做的是在图片之间留一条空行，并向below创建“0 或 1”的节点添加选项。

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