填充两个节点之间的两个圆弧之间的空间

Question

我有以下代码：

\begin{pspicture}(-1,-1)(2,2)
\psmatrix[rowsep=3cm,colsep=3cm,mnode=circle]
 [name=A]A & [name=B]B 
\endpsmatrix
\ncarc[arcangle=30]{A}{B} \naput{4}
\ncarc[liftpen=2,arcangle=30]{B}{A}\naput{5}
 \end{pspicture}

我如何填充 4 和 5 之间的中心部分？向各个弧线添加填充不会产生正确的结果。

Answer 1

\documentclass{article}
\usepackage{pst-node}
\begin{document}

\begin{pspicture}(-1,-2)(4,3)
\pnodes(0,0){A}(3,0){B}
\psset{arcangle=30}
\pscustom[fillstyle=solid,fillcolor=black!20,linestyle=none]{
    \ncarc{A}{B}\ncarc{B}{A}
}
\pcarc(A)(B)\naput{4} \pcarc(B)(A)\naput{5}
\cnodeput[fillstyle=solid,fillcolor=white](A){A}{A}
\cnodeput[fillstyle=solid,fillcolor=white](B){B}{B}
\end{pspicture}

\end{document}

Answer 2

您可以添加一个\pscustom命令：

\documentclass[x11names]{standalone}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{ebgaramond}
\usepackage{array}
\usepackage{pstricks-add}
\usepackage{auto-pst-pdf}
\psset{unit = 2,dotsize = 2.5pt}

\begin{document}

\begin{pspicture}(-1,-1)(2,2)
\psmatrix[rowsep=3cm,colsep=3cm,mnode=circle]
 [name=A]A & [name=B]B
\endpsmatrix
\ncarc[arcangle=30]{A}{B} \naput{4}
\ncarc[liftpen=2,arcangle=30]{B}{A}\naput{5}
\pscustom[fillstyle =solid,  fillcolor=Thistle3!30]{\ncarc[arcangle=30]{A}{B}\psarc(B){0.137}{150}{212}
\ncarc[arcangle=30]{B}{A}\psarc(A){0.145}{-30}{32}}
 \end{pspicture}

\end{document} 

Answer 3

我将首先绘制圆弧填充（使用\pscustom），然后叠加两个端点圆，每个圆都有白色填充以去除圆弧填充的端点：

\documentclass{article}

\usepackage{pst-node}

\begin{document}

\begin{pspicture}
  \pnode(0,0){A}% Identify node A
  \pnode(3cm,0){B}% Identify node B
  \ncarc[arcangle=30]{A}{B}\naput{4}% Place arc labels
  \ncarc[arcangle=30]{B}{A}\naput{5}
  \pscustom[fillstyle=solid, fillcolor=black!10]{
    \ncarc[arcangle=30]{A}{B}% Place arcs and fill
    \ncarc[arcangle=30]{B}{A}
  }
  \pscircle[fillcolor=white,fillstyle=solid](A){3mm}% Place circles
  \pscircle[fillcolor=white,fillstyle=solid](B){3mm}
  \rput(A){A}\rput(B){B}% Place circle labels
\end{pspicture}

\end{document}