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更新2：关于增量叠加规范的一些解释

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更新2：关于增量叠加规范的一些解释

我正在尝试制作如下动画：

  1. 幻灯片 1 应仅显示Bullet 1
  2. 幻灯片 2 应root添加child1
  3. 幻灯片 3 应添加child2
  4. 幻灯片 4 应添加Bullet 2

提前致谢。

\documentclass{beamer}
\mode<presentation>{\usetheme{Madrid}}


\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric, arrows}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\tikzstyle{process} = [rectangle, minimum width=3cm, minimum height=1cm, text centered, text width=3cm, draw=black, fill=orange!30]
\tikzstyle{arrow} = [thick,->,>=stealth]

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\begin{frame}

\begin{itemize}[<+->]
\item Bullet 1

\begin{tikzpicture}[node distance=3cm]

\node (root) [process] {root};
\node (child1) [process, below of=root, xshift=-4cm] {child1};
\draw [arrow] (root.south) -- (child1.north);


\node<+(1)-> (child2) [process, below of=root, xshift=4cm] {child2};
\draw<.(1)-> [arrow] (root.south) -- (child2.north);


\end{tikzpicture}

\item Bullet 2
\end{itemize}
\end{frame}

\end{document}

答案1

更新2：关于增量叠加规范的一些解释

叠加的细节可以是绝对或者相对的。

当它们是绝对的时候：

我们将幻灯片编号设为，<3>这意味着该命令将在上可见slide #3。

当它们是相对的时候：

这计数器的值 beamerpauses用符号表示+（请注意，该+符号不是附加的）。

因此，如果幻灯片是number 3并且顺序为：

  • 指定<+->，则扩展为<3->；
  • 指定<+(1)->，则扩展为<4->；
  • 指定<+(-1)-+>，则扩展为<2-3>；

另一个需要理解的符号是dot symbol .当在覆盖规范中呈现时，它代表计数器的先前值。

因此，如果幻灯片是第 3 张且顺序如下：

  • 指定<.->，则扩展为<2->；
  • 指定<.(1)->，则扩展为<3->；
  • 指定<.(-1)-.>，则扩展为<1-2>；

更新 1：增加规格

\begin{document}
\begin{frame}

\begin{itemize}%[<+->]
\item<1-> Bullet 1

\begin{tikzpicture}[node distance=3cm]

\node<+(1)-> (root) [process] {root};
\node<.(1)-> (child1) [process, below of=root, xshift=-4cm] {child1};
\draw<.(1)-> [arrow] (root.south) -- (child1.north);


\node<+(1)-> (child2) [process, below of=root, xshift=4cm] {child2};
\draw<.(1)-> [arrow] (root.south) -- (child2.north);


\end{tikzpicture}

\item<+(1)-> Bullet 2
\end{itemize}
\end{frame}

\end{document}

旧答案：使用覆盖规范

\documentclass{beamer}
\mode<presentation>{\usetheme{Madrid}}


\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric, arrows}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\tikzstyle{process} = [rectangle, minimum width=3cm, minimum height=1cm, text centered, text width=3cm, draw=black, fill=orange!30]
\tikzstyle{arrow} = [thick,->,>=stealth]

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\begin{frame}

\begin{itemize}[<+->]
\item Bullet 1

\begin{tikzpicture}[node distance=3cm]

\node<2-> (root) [process] {root};
\node<2-> (child1) [process, below of=root, xshift=-4cm] {child1};
\draw<2-> [arrow] (root.south) -- (child1.north);


\node<+(1)-> (child2) [process, below of=root, xshift=4cm] {child2};
\draw<.(1)-> [arrow] (root.south) -- (child2.north);


\end{tikzpicture}

\item<4-> Bullet 2
\end{itemize}
\end{frame}

\end{document}

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