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在连续路径中使用圆弧

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在连续路径中使用圆弧

我希望“矩形”的其中一条边是圆弧。我希望 可以arc像 一样使用--，这样就cycle可以闭合所有的路径，但显然它只会关闭弧线。我该如何摆脱中间的线？这是我的代码：

\documentclass[11pt, border=1pt]{standalone}
\usepackage{tikz}

\begin{document}

\begin{tikzpicture}
  \pgfmathsetmacro{\chamberheight}{4}
  \pgfmathsetmacro{\chamberwidth}{5}
  \pgfmathsetmacro{\curverad}{4}
  \pgfmathsetmacro{\phibase}{asin(\chamberheight/2/\curverad)}
  \pgfmathsetmacro{\phif}{180+\phibase}
  \pgfmathsetmacro{\phii}{180-\phibase}
  \pgfmathsetmacro{\xin}{\curverad*cos(\phibase)}
  \pgfmathsetmacro{\cellwidth}{0.4}
  \pgfmathsetmacro{\cellheight}{1}
  \pgfmathsetmacro{\initialx}{\xin-\curverad+0.05}


  \draw[smooth,thick,line join=round] (0,-\chamberheight/2) --
    ++(\chamberwidth,0) -- ++(0,\chamberheight) -- ++(-\chamberwidth,0)
    ++(\xin,-2) ++(\phii:\curverad) arc (\phii:\phif:\curverad) --
    cycle;

  \foreach \x in {-18,-6,6,18}{ 
    \draw[smooth, line join=round, thick, fill=white, 
            rotate around={\x:(\xin,0)}]
      (\initialx,-\cellwidth/2) -- ++(-\cellheight,0) --
      ++(0,\cellwidth) -- ++(\cellheight,0);}

\end{tikzpicture}
\end{document}

数字

答案1

您只需绘制矩形，然后绘制带有圆弧的版本。如果您剪掉相关的线条，它就可以正常工作。

\documentclass[border=10pt,multi,tikz]{standalone}
\begin{document}

\begin{tikzpicture}
  \pgfmathsetmacro{\chamberheight}{4}
  \pgfmathsetmacro{\chamberwidth}{5}
  \pgfmathsetmacro{\curverad}{4}
  \pgfmathsetmacro{\phibase}{asin(\chamberheight/2/\curverad)}
  \pgfmathsetmacro{\phif}{180+\phibase}
  \pgfmathsetmacro{\phii}{180-\phibase}
  \pgfmathsetmacro{\xin}{\curverad*cos(\phibase)}
  \pgfmathsetmacro{\cellwidth}{0.4}
  \pgfmathsetmacro{\cellheight}{1}
  \pgfmathsetmacro{\initialx}{\xin-\curverad+0.05}


  \draw [smooth,thick,line join=round]
  (0,-\chamberheight/2)  --
  ++(\chamberwidth,0) --
  ++(0,\chamberheight) --
  ++(-\chamberwidth,0)
  arc (\phii:\phif:\curverad)  --
    cycle;

  \foreach \x in {-18,-6,6,18}{
    \draw[smooth, line join=round, thick, fill=white,
            rotate around={\x:(\xin,0)}]
      (\initialx,-\cellwidth/2) -- ++(-\cellheight,0) --
      ++(0,\cellwidth) -- ++(\cellheight,0);}

\end{tikzpicture}

\end{document}

弧闭合

请注意，如果这对您有用的话，rounded rectangle可以将初始轮廓绘制为单一操作。\node

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