在投影仪演示，我观察到演讲者有一个系统的 TikZ 图，并且在下一瞬间，节点填充颜色发生了变化（在 3:08）。
我知道
\tikzstyle{every state}=[fill=red,draw=none,text=white]
用于给节点添加填充颜色、文本颜色。
我的问题是：你好改变在投影机演示期间动态地更改节点填充颜色或文本颜色？
其他查询在 SE 点上改变边缘颜色，使用
\only<2>{\color{red}}
首先，我提供一个借来的TikZ 图。
% Author: Till Tantau
% Source: The PGF/TikZ manual
%http://texample.net/tikz/examples/feature/automata-and-petri-nets/
\documentclass{article}
\usepackage{pgf}
\usepackage{tikz}
\usetikzlibrary{arrows,automata}
\usepackage[latin1]{inputenc}
\usepackage{verbatim}
\begin{document}
\begin{comment}
:Title: State machine
:Tags: Manual, Automata, Graphs
Another examle from the manual.
| Author: Till Tantau
| Source: The PGF/TikZ manual
\end{comment}
\begin{tikzpicture}[->,>=stealth',shorten >=1pt,auto,node distance=2.8cm,
semithick]
% \tikzstyle{every state}=[fill=red,draw=none,text=white]
\tikzstyle{every state}=[draw=none]
\node[initial,state] (A) {$q_a$};
\node[state] (B) [above right of=A] {$q_b$};
\node[state] (D) [below right of=A] {$q_d$};
\node[state] (C) [below right of=B] {$q_c$};
\node[state] (E) [below of=D] {$q_e$};
\path (A) edge node {0,1,L} (B)
edge node {1,1,R} (C)
(B) edge [loop above] node {1,1,L} (B)
edge node {0,1,L} (C)
(C) edge node {0,1,L} (D)
edge [bend left] node {1,0,R} (E)
(D) edge [loop below] node {1,1,R} (D)
edge node {0,1,R} (A)
(E) edge [bend left] node {1,0,R} (A);
\end{tikzpicture}
\end{document}
实施建议：\only<1>{\tikzstyle{every state}=[draw=none]} \only<2->{\tikzstyle{every state}=[fill=red,draw=none,text=white]}
\documentclass[11pt]{beamer}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{pgf}
\usepackage{tikz}
\usetikzlibrary{arrows,automata}
\usetheme{default}
\begin{document}
\begin{frame}
\begin{tikzpicture}[->,>=stealth',shorten >=1pt,auto,node distance=2.8cm,
semithick]
\tikzstyle{every state}=[draw=none]
\node[initial,state] (A) {$q_a$};
\node[state] (B) [above right of=A] {$q_b$};
\node[state] (D) [below right of=A] {$q_d$};
\node[state] (C) [below right of=B] {$q_c$};
\node[state] (E) [below of=D] {$q_e$};
\only<1>{\tikzstyle{every state}=[draw=none]} \only<2->{\tikzstyle{every state}=[fill=red,draw=none,text=white]}
\path (A) edge node {0,1,L} (B)
edge node {1,1,R} (C)
(B) edge [loop above] node {1,1,L} (B)
edge node {0,1,L} (C)
(C) edge node {0,1,L} (D)
edge [bend left] node {1,0,R} (E)
(D) edge [loop below] node {1,1,R} (D)
edge node {0,1,R} (A)
(E) edge [bend left] node {1,0,R} (A);
\end{tikzpicture}
\end{frame}
\end{document}
答案1
您可以通过 来实现它only<>。
\only<1>{\tikzset{every state/.style={draw=none}}}
\only<2->{\tikzset{every state/.style={fill=red,draw=none,text=white}}}
您必须将这些行放在节点（state）放置之前。
完整代码
\documentclass[11pt]{beamer}
\usepackage{tikz}
\usetikzlibrary{arrows,automata}
\usetheme{default}
\begin{document}
\begin{frame}
\begin{tikzpicture}[->,>=stealth',shorten >=1pt,auto,node distance=2.8cm,semithick]
\only<1>{\tikzset{every state/.style={draw=none}}}
\only<2->{\tikzset{every state/.style={fill=red,draw=none,text=white}}}
\node[initial,state] (A) {$q_a$};
\node[state] (B) [above right of=A] {$q_b$};
\node[state] (D) [below right of=A] {$q_d$};
\node[state] (C) [below right of=B] {$q_c$};
\node[state] (E) [below of=D] {$q_e$};
\path
(A) edge node {0,1,L} (B)
edge node {1,1,R} (C)
(B) edge [loop above] node {1,1,L} (B)
edge node {0,1,L} (C)
(C) edge node {0,1,L} (D)
edge [bend left] node {1,0,R} (E)
(D) edge [loop below] node {1,1,R} (D)
edge node {0,1,R} (A)
(E) edge [bend left] node {1,0,R} (A);
\end{tikzpicture}
\end{frame}
\end{document}