如何在不同位置包含叠加层的子集

Question

我有一个用于演示的“图形”目录，我使用多个叠加层来开发和解释它。在稍后的演讲中，我想再次引用它。为此，我需要“调用”目录切片，但不调用所有介绍性叠加层。

梅威瑟：我希望以下幻灯片的叠加层 1-3 出现在演讲的开头，然后是其他一些幻灯片，然后是叠加层 4，然后是其他一些幻灯片，然后是叠加层 5。

\documentclass[beamer]{standalone}
\usepackage{tikz}
\makeatletter
\newcommand*{\overlaynumber}{\number\beamer@slideinframe}
\makeatother
\begin{document}
    \begin{standaloneframe}{Contents}
        \begin{tikzpicture}
            \node at (5,0) {overlay: \overlaynumber};
            \node (a) at (0,0) {A};
            \node (b) at (1,0) {B};
            \node (c) at (2,0) {C};
            \pause % -------------------------------------
            \draw [->] (a) -- (b);
            \draw [->] (b) -- (c);
            \pause %--------------------------------------
            \visible<+>{
                \node at (0.5,1) {some explanation};
            }
            % --------------------------------------------
            \visible<+>{
                \draw [red] 
                    (a.south west) rectangle (b.north east);
            }
            % --------------------------------------------
            \visible<+>{
                \draw [red] 
                    (a.south west) rectangle (b.north east);
            }
            % --------------------------------------------
            \visible<+>{
                \draw [red] 
                    (b.south west) rectangle (c.north east);
            }
        \end{tikzpicture}
    \end{standaloneframe}
\end{document}

Answer 1

您\againframe<>{}可以选择要重复的覆盖。

\documentclass{beamer}
\usepackage{tikz}
\makeatletter
\newcommand*{\overlaynumber}{\number\beamer@slideinframe}
\makeatother
\begin{document}
    \begin{frame}<1-3>[label=foo]{Contents}
        \begin{tikzpicture}
            \node at (5,0) {overlay: \overlaynumber};
            \node (a) at (0,0) {A};
            \node (b) at (1,0) {B};
            \node (c) at (2,0) {C};
            \pause % -------------------------------------
            \draw [->] (a) -- (b);
            \draw [->] (b) -- (c);
            \pause %--------------------------------------
            \visible<+>{
                \node at (0.5,1) {some explanation};
            }
            % --------------------------------------------
            \visible<+>{
                \draw [red] 
                    (a.south west) rectangle (b.north east);
            }
            % --------------------------------------------
            \visible<+>{
                \draw [red] 
                    (a.south west) rectangle (b.north east);
            }
            % --------------------------------------------
            \visible<+>{
                \draw [red] 
                    (b.south west) rectangle (c.north east);
            }
        \end{tikzpicture}
    \end{frame}

    \begin{frame}
        other frame
    \end{frame}

    \againframe<4>{foo}

    \begin{frame}
        yet other frame
    \end{frame}


\end{document}

---

使用最新版本的 Beamer，可以简化为

\documentclass{beamer}
\usepackage{tikz}

\begin{document}
    \begin{frame}<1-3>[label=foo]{Contents}
        \begin{tikzpicture}
            \node at (5,0) {overlay: \insertoverlaynumber};
            \node (a) at (0,0) {A};
            \node (b) at (1,0) {B};
            \node (c) at (2,0) {C};
            \pause % -------------------------------------
            \draw [->] (a) -- (b);
            \draw [->] (b) -- (c);
            \pause %--------------------------------------
            \visible<+>{
                \node at (0.5,1) {some explanation};
            }
            % --------------------------------------------
            \visible<+>{
                \draw [red] 
                    (a.south west) rectangle (b.north east);
            }
            % --------------------------------------------
            \visible<+>{
                \draw [red] 
                    (a.south west) rectangle (b.north east);
            }
            % --------------------------------------------
            \visible<+>{
                \draw [red] 
                    (b.south west) rectangle (c.north east);
            }
        \end{tikzpicture}
    \end{frame}

    \begin{frame}
        other frame
    \end{frame}

    \againframe<4>{foo}

    \begin{frame}
        yet other frame
    \end{frame}


\end{document}