![将间谍与 Beamer 动画一起使用?](https://linux22.com/image/463375/%E5%B0%86%E9%97%B4%E8%B0%8D%E4%B8%8E%20Beamer%20%E5%8A%A8%E7%94%BB%E4%B8%80%E8%B5%B7%E4%BD%BF%E7%94%A8%EF%BC%9F.png)
TikZ spy 和 Beamer \pause、\onslide 等似乎不能很好地协同工作。这在之前的几个问题中已经观察到,尽管这些问题比较老(特别是,1和2),但那里显示的解决方法对我来说不起作用。
M(N)WE:
\documentclass[tikz]{beamer}
\usepackage{tikz}
\usetikzlibrary{spy}
% following https://tex.stackexchange.com/questions/88251/tikz-spy-and-beamer-uncover and https://tex.stackexchange.com/questions/438218/beamer-uncover-magnification-using-tikz-spy-library:
\tikzset{
invisible/.style={opacity=0,text opacity=0},
visible on/.style={alt={#1{}{invisible}}},
connect on/.style={alt={#1{connect spies}{}}},
alt/.code args={<#1>#2#3}{%
\alt<#1>{\pgfkeysalso{#2}}{\pgfkeysalso{#3}}
},
}
\begin{document}
\begin{frame}
\frametitle{test}
\begin{tikzpicture}[spy using outlines={magnification=4, size=2cm, connect spies}]
\node (first) {Initial text};
% simple approach fails:
\onslide <2->
\spy on (first) in node at (2,-2);
% this fails as well: https://tex.stackexchange.com/questions/88251/tikz-spy-and-beamer-uncover
% \only<2->{
% \spy[overlay] on (first) in node at (2,-2);
% }
% approach inspired by https://tex.stackexchange.com/questions/438218/beamer-uncover-magnification-using-tikz-spy-library
% fails as well
% \spy[visible on=<2->] on (first) in node at (2,-2);
% rewording as fails:
% \spy[connect on=<2->] on (first) in node[visible on=<2->] at (2,-2);
% spy does not seem to be overlay-aware, e.g. the following does not work
% \spy<2-> on (first) in node at (2,-2);
\onslide<3->
\node at (0,-4) (third) {Third text};
\onslide<4->
\node at (0,-6) (fourth) {Fourth text};
\end{tikzpicture}
\end{frame}
\end{document}
我的期望是间谍出现在第二张幻灯片上,但它总是只出现在最后一张幻灯片上。MWE 包括上述链接中的解决方法,但我没有看到任何行为差异,也无法重现这些解决方案。
有什么提示吗?
答案1
我不会在 tikzpicture 中使用\pause
或\onslide
,这可能会产生“有趣”的副作用,例如使脚线消失。
如果您避免\onslide
在第 3 和第 4 个覆盖层上使用文本,则链接问题的解决方案可以正常工作:
\documentclass[tikz]{beamer}
\usepackage{tikz}
\usetikzlibrary{spy}
% following https://tex.stackexchange.com/questions/88251/tikz-spy-and-beamer-uncover and https://tex.stackexchange.com/questions/438218/beamer-uncover-magnification-using-tikz-spy-library:
\tikzset{
connect on/.style={alt={#1{connect spies}{}}},
}
\usetikzlibrary{overlay-beamer-styles}
\begin{document}
\begin{frame}
\frametitle{test}
\begin{tikzpicture}[spy using outlines={magnification=4, size=2cm, connect spies}]
\node (first) {Initial text};
\spy[overlay,visible on=<2->] on (first) in node at (2,-2);
\node[visible on=<3->] at (0,-4) (third) {Third text};
\node[visible on=<4->] at (0,-6) (fourth) {Fourth text};
\end{tikzpicture}
\end{frame}
\end{document}