☰

tikz 标签随路径翻转！

tag-icon • tag-icon tikz-pgf tikz-styles tikz-arrows
tikz 标签随路径翻转！

我正在尝试想出一个使用 tikz 进行递归调用的良好示意图，但结果并不像我所期望的那样，因为一个标签无缘无故地被翻转了：

在此处输入图片描述

MWE 是：

\documentclass[xcolor=dvipsnames]{beamer}

\mode<presentation> {

\usetheme{default}
}


\usepackage{tikz}
\usetikzlibrary{shapes.geometric, arrows}

\tikzstyle{node} = [rectangle, rounded corners, minimum width=2cm, minimum height=0.5cm,text centered, draw=black]
\tikzstyle{arrow} = [thick,->,>=stealth]

\addtobeamertemplate{block begin}{}{\justifying}  %new code

\usepackage{listings}

% Default fixed font does not support bold face
\DeclareFixedFont{\ttb}{T1}{txtt}{bx}{n}{12} % for bold
\DeclareFixedFont{\ttm}{T1}{txtt}{m}{n}{12}  % for normal

% Python style for highlighting
\newcommand\pythonstyle{\lstset{language=Python,
  basicstyle=\ttm\scriptsize,
  showstringspaces=false,
}}

% Python environment
\lstnewenvironment{python}[1][mathescape]
{
\pythonstyle
\lstset{#1}
}
{}

\begin{document}


\begin{frame}[fragile]

\begin{figure}
\begin{tikzpicture}[node distance=2cm, scale=0.8, every node/.style={scale=0.8}]

\node (fact3) [node] {
\begin{python}
fact(3):
    n = 3
    return 3*fact(2)
\end{python}
};
\node (fact2) [node, below of=fact3] {
\begin{python}
fact(2):
    n = 2
    return 2*fact(1)
\end{python}
};
\node (fact1) [node, below of=fact2] {
\begin{python}
fact(1):
    n = 1
    return 1*fact(0)
\end{python}
};
\node (fact0) [node, below of=fact1] {
\begin{python}
fact(0):
    n = 0
    return 1
\end{python}
};
 \path[->]                 (fact3)    edge[bend left=30]                node[swap]  {}       (fact2);
 \path[->]                 (fact2)    edge[bend left=30]                node[swap]  {}       (fact1);
 \path[->]                 (fact1)    edge[bend left=30]                node[swap]  {}       (fact0);
 \path[->, dashed]   (fact0)    edge[bend left=30]                node[pos=0.5, sloped, above]  {1}       (fact1);
 \path[->, dashed]   (fact1)    edge[bend left=30]                node[pos=0.5, sloped, above]  {1}       (fact2);
 \path[->, dashed]   (fact2)    edge[bend left=30]                node[pos=0.5, sloped, above]  {2}       (fact3);
\end{tikzpicture}
\caption{Recursive factorial calls}
\end{figure}

\end{frame}


\end{document}

答案1

太棒了，这个列表（图是 Beamer 中的一个 trivlist）确实有一些有趣的副作用。你可以通过使用以下方法避免翻转\begin{figure}\leavevmode ...

相关内容