使用 tikz 在思维导图中的背景上建立概念连接

Question

我正在尝试用 TikZ 绘制思维导图。

绘制概念连接时，有些连接会遮住节点本身。有没有直接的方法强制将连接置于背景上？

梅威瑟：

\begin{tikzpicture}[mindmap,
level 1 concept/.append style={sibling angle=150},
extra concept/.append style={color=blue!50,text=black}]

\begin{scope}[mindmap, concept color=red!80, text=white]
\node [concept] (root) at (0,0) {root}[clockwise from=0]
   child[concept]
   {node [concept] (node-a) {A}
   }
   child[concept]
   {node [concept] (node-b) {B}
   }
 ;
\end{scope}

\draw [concept connection]
  (node-a) edge (node-b)
  ;

\end{tikzpicture}

Answer 1

将库添加backgrounds到您的库中tikzlibrary，然后将连接括在以下标签中：

\begin{pgfonlayer}{background} <connections> \end{pgfonlayer}

输出

代码

\documentclass[margin=10pt]{standalone}
\usepackage{tikz}

\usetikzlibrary{mindmap,backgrounds}

\begin{document}
\begin{tikzpicture}[mindmap,
level 1 concept/.append style={sibling angle=150},
extra concept/.append style={color=blue!50,text=black}]

\begin{scope}[mindmap, concept color=red!80, text=white]
\node [concept] (root) at (0,0) {root}[clockwise from=0]
   child[concept]
   {node [concept] (node-a) {A}
   }
   child[concept]
   {node [concept] (node-b) {B}
   }
 ;
\end{scope}
\begin{pgfonlayer}{background}
\draw [concept connection]
  (node-a) edge (node-b)
  ;
\end{pgfonlayer}
\end{tikzpicture}
\end{document}