具有弯曲平行线的节点

Question

我想创建一个节点样式，它由一个圆圈和两条线（可能向内弯曲）组成，south west并与和south east连接。north westnorth east

经过一番研究，我找到了一种原则上应该是解决方案的方法：

\tikzset{
Vh/.style = {draw, circle, minimum size=1cm, ultra thick, text = black, path picture={%
        \draw (path picture bounding box.south east) -- (path picture bounding box.north west)
              (path picture bounding box.north east) -- (path picture bounding box.south west)
              (path picture bounding box.north east) -- (path picture bounding box.north west)
      ;}}

但是，出于某种原因，这只会产生对角线。此解决方案既不能产生垂直线也不能产生水平线。但为什么呢？是 bug 还是我做错了？有没有更好的解决方案？

Answer 1

你是这个意思？

\documentclass[a4paper,11pt]{article}
\usepackage{tikz}

\tikzset{
Vh/.style = {draw, circle, minimum size=1cm, ultra thick, text = black, path picture={%
        \draw (path picture bounding box.south east) to[bend right] (path picture bounding box.south west)
              (path picture bounding box.north east) to[bend left] (path picture bounding box.north west)
      ;}}
      }

\begin{document}
\begin{tikzpicture}
  \node[Vh] {here};
\end{tikzpicture}
\end{document}

改变的行是

\draw (path picture bounding box.south east) to[bend right] (path picture bounding box.south west)
                  (path picture bounding box.north east) to[bend left] (path picture bounding box.north west)

在哪里to[bend left/right]已经使用过。