我一直在尝试增加下图中字母之间的间距：
\documentclass[12pt]{standalone}
\usepackage{tikz}
\usepackage{fontspec}
\setmainfont{Brill}
\usetikzlibrary{decorations.text}
\begin{document}
\begin{tikzpicture}
\draw [white] (-10,0) -- (-8,0) node [black, midway] {West};
\draw [white] (0,8) -- (0,11) node [black, rotate=90, midway] {North};
\draw [white] (8,0) -- (10,0) node [black, midway] {East};
\draw [white] (0,-8) -- (0,-11) node [black, rotate=90, midway] {South};
\draw (-8,0) -- (8,0);
\draw (0,-8) -- (0,8);
\path[decorate,decoration={raise=-18pt, text along path, text={North East},text align=center}] (0,8) arc (90:0:8cm);
\draw [thick] (0,8) arc (90:0:8cm);
\path[decorate,decoration={raise=-18pt, text along path, text={North West},text align=center, reverse path}] (0,8) arc (90:180:8cm);
\draw [thick] (0,8) arc (90:180:8cm);
\path[decorate,decoration={raise=-18pt, text along path, text={South West},text align=center, reverse path}] (-8,0) arc (180:270:8cm);
\draw [thick] (-8,0) arc (180:270:8cm);
\path[decorate,decoration={raise=-18pt, text along path, text={South East},text align=center, reverse path}] (0,-8) arc (270:360:8cm);
\draw [thick] (0,-8) arc (270:360:8cm);
\path[decorate,decoration={raise=18pt, text along path, text={N o r t h E a s t},text align=center}] (0,8) arc (90:0:8cm);
\draw [thick] (0,8) arc (90:0:8cm);
\path[decorate,decoration={raise=18pt, text along path, text={N o r t h W e s t},text align=center, reverse path}] (0,8) arc (90:180:8cm);
\draw [thick] (0,8) arc (90:180:8cm);
\path[decorate,decoration={raise=18pt, text along path, text={S o u t h W e s t},text align=center, reverse path}] (-8,0) arc (180:270:8cm);
\draw [thick] (-8,0) arc (180:270:8cm);
\path[decorate,decoration={raise=18pt, text along path, text={S o u t h E a s t},text align=center, reverse path}] (0,-8) arc (270:360:8cm);
\draw [thick] (0,-8) arc (270:360:8cm);
\node [above] at (0,8) {\textit{b}};
\node [below] at (0,-8) {\textit{d}};
\node [left] at (-8,0) {\textit{a}};
\node [right] at (8,0) {\textit{c}};
\end{tikzpicture}
\end{document}
理想情况下，如果不是因为系统将两个空格算作一个空格，结果应该是圆外的装饰。我不想使用此选项，fit to path因为文本在整个圆弧上被拉伸了。您有什么建议吗（如果您发现任何不一致之处）？谢谢！
答案1
大部分都是题外话（关于如何使代码更简洁的一些想法），对于圆外路径上的文本的解决方案与@marmoth 答案中的相同：
\documentclass[tikz,border=3.14mm]{standalone}
\usepackage{fontspec}
% \setmainfont{Brill}
\usetikzlibrary{decorations.text}
\begin{document}
\begin{tikzpicture}[
textA/.style args = {#1/#2}{decorate,
decoration={raise= 18pt, text along path, text=#1,
text align=fit to path, #2}}, % #2 for reversed path
textB/.style args = {#1/#2}{decorate,
decoration={raise=-18pt, text along path, text=#1,
text align=center, #2}}, % #2 for reversed path
]
\node [left] at (-8.4,0) {West};
\node [above,anchor=west,rotate=90] at (0, 8.4) {North};
\node [right] at (8.4,0) {East};
\node [below,anchor=east,rotate=90] at (0,-8.4) {South};
\draw (-8,0) -- (8,0)
(0,-8) -- (0,8);
%
\path[textB=North East/ ] (0,8) arc (90:0:8cm);
\path[textB=North West/reverse path] ( 0,8) arc (90:180:8cm);
\path[textB=South West/reverse path] (-8,0) arc (180:270:8cm);
\path[textB=South East/reverse path] (0,-8) arc (270:360:8cm);
%
\path[textA=North East/ ] (60:8) arc (60:30:8cm);
\path[textA=North West/reverse path] (120:8) arc (120:150:8cm);
\path[textA=South West/reverse path] (210:8) arc (210:240:8cm);
\path[textA=South East/reverse path] (300:8) arc (300:330:8cm);
%
\draw [thick] (0,0) circle[radius=8cm];
%
\node[above] at (0,8) {$b$};
\node[below] at (0,-8) {$d$};
\node[left] at (-8,0) {$a$};
\node[right] at (8,0) {$c$};
\end{tikzpicture}
\end{document}
答案2
这是使用的建议text align=fit to path。我没有您的字体。
\documentclass[tikz,border=3.14mm]{standalone}
% \usepackage{fontspec}
% \setmainfont{Brill}
\usetikzlibrary{decorations.text}
\begin{document}
\begin{tikzpicture}
\draw [white] (-10,0) -- (-8,0) node [black, midway] {West};
\draw [white] (0,8) -- (0,11) node [black, rotate=90, midway] {North};
\draw [white] (8,0) -- (10,0) node [black, midway] {East};
\draw [white] (0,-8) -- (0,-11) node [black, rotate=90, midway] {South};
\draw (-8,0) -- (8,0);
\draw (0,-8) -- (0,8);
\path[decorate,decoration={raise=-18pt, text along path, text={North East},text align=center}] (0,8) arc (90:0:8cm);
\draw [thick] (0,8) arc (90:0:8cm);
\path[decorate,decoration={raise=-18pt, text along path, text={North West},text align=center, reverse path}] (0,8) arc (90:180:8cm);
\draw [thick] (0,8) arc (90:180:8cm);
\path[decorate,decoration={raise=-18pt, text along path, text={South West},text align=center, reverse path}] (-8,0) arc (180:270:8cm);
\draw [thick] (-8,0) arc (180:270:8cm);
\path[decorate,decoration={raise=-18pt, text along path, text={South East},text align=center, reverse path}] (0,-8) arc (270:360:8cm);
\draw [thick] (0,-8) arc (270:360:8cm);
\path[decorate,decoration={raise=18pt, text along path,text align=fit to path,
text={North East},text align=center}] (60:8) arc (60:30:8cm);
\draw [thick] (0,8) arc (90:00:8cm);
\path[decorate,decoration={raise=18pt, text along path,text align=fit to path,
text={North West},text align=center, reverse path}] (120:8) arc (120:150:8cm);
\draw [thick] (0,8) arc (90:180:8cm);
\path[decorate,decoration={raise=18pt, text along path,text align=fit to path,
text={South West},text align=center, reverse path}] (210:8) arc (210:240:8cm);
\draw [thick] (-8,0) arc (180:270:8cm);
\path[decorate,decoration={raise=18pt, text along path,text align=fit to path,
text={South East},text align=center, reverse path}] (300:8) arc (300:330:8cm);
\draw [thick] (0,-8) arc (270:360:8cm);
\node [above] at (0,8) {\textit{b}};
\node [below] at (0,-8) {\textit{d}};
\node [left] at (-8,0) {\textit{a}};
\node [right] at (8,0) {\textit{c}};
\end{tikzpicture}
\end{document}
