无法更改 PGF 装饰文本

Question

跟进@TomBombadil 的回答路径上的圆形箭头和文字。我试图调整文本的大小和/或颜色，但编译卡在了：

(/usr/local/texlive/2013/texmf-dist/tex/latex/latexconfig/epstopdf-sys.cfg))

具体来说，我尝试将text={#8}宏定义最后一行中的替换\arcarrow为类似内容\text={\large #8}，但没有成功。有什么想法吗？

为了完整起见，下面是我尝试编译的代码：

\documentclass[border=10pt]{standalone}
\usepackage{tikz}
\usetikzlibrary{decorations.text}

\newcommand{\arcarrow}[8]% inner radius, middle radius, outer radius, start angle, end angle, tip protusion angle, options, text
{   \pgfmathsetmacro{\rin}{#1}
  \pgfmathsetmacro{\rmid}{#2}
  \pgfmathsetmacro{\rout}{#3}
  \pgfmathsetmacro{\astart}{#4}
  \pgfmathsetmacro{\aend}{#5}
  \pgfmathsetmacro{\atip}{#6}
  \fill[#7] (\astart:\rin) arc (\astart:\aend:\rin) -- (\aend+\atip:\rmid) -- (\aend:\rout) arc (\aend:\astart:\rout) -- (\astart+\atip:\rmid) -- cycle;
  \path[decoration={text along path, text={\large #8}, text align={align=center}, raise=-0.5ex},decorate] (\astart+\atip:\rmid) arc (\astart+\atip:\aend+\atip:\rmid);
}

\begin{document}
\begin{tikzpicture}
  \arcarrow{3}{4}{5}{10}{110}{10}{red,draw=red!20!black,very thick}{Parameterization}
  \arcarrow{3}{4}{5}{130}{230}{10}{red,draw=red!20!black,very thick}{Approximation}
  \arcarrow{3}{4}{5}{250}{350}{10}{red,draw=red!20!black,very thick}{Implementation}
\end{tikzpicture}
\end{document}

Answer 1

我找到了这样的解决方案：使用|\large|、|\Huge|等进行字体声明：

\documentclass[border=10pt]{standalone}
\usepackage{tikz}
\usetikzlibrary{decorations.text}
\tikzstyle{line node} = [font=\large ]
\newcommand{\arcarrow}[8]% inner radius, middle radius, outer radius, start angle, end angle, tip protusion angle, options, text
{   \pgfmathsetmacro{\rin}{#1}
  \pgfmathsetmacro{\rmid}{#2}
  \pgfmathsetmacro{\rout}{#3}
  \pgfmathsetmacro{\astart}{#4}
  \pgfmathsetmacro{\aend}{#5}
  \pgfmathsetmacro{\atip}{#6}
  \fill[#7] (\astart:\rin) arc (\astart:\aend:\rin) -- (\aend+\atip:\rmid) -- (\aend:\rout) arc (\aend:\astart:\rout) -- (\astart+\atip:\rmid) -- cycle;
  \path[decoration={text along path, text={|\Huge| #8}, text align={align=center}, raise=-0.5ex},decorate] (\astart+\atip:\rmid) arc (\astart+\atip:\aend+\atip:\rmid);
}

\begin{document}
\begin{tikzpicture} 
  \arcarrow{3}{4}{5}{10}{110}{10}{red,draw=red!20!black,very thick}{Parameterization}
  \arcarrow{3}{4}{5}{130}{230}{10}{red,draw=red!20!black,very thick}{Approximation}
  \arcarrow{3}{4}{5}{250}{350}{10}{red,draw=red!20!black,very thick}{Implementation}
\end{tikzpicture}
\end{document}