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我怎样才能写出螺旋符号？

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我怎样才能写出螺旋符号？

我怎样才能得到像

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似乎有一个螺旋状的unicode代码点：http://www.fileformat.info/info/unicode/char/aa5c/index.htm

我试过

\documentclass[varwidth=true, border=2pt]{standalone}
\usepackage[ngerman]{babel} 
\usepackage[utf8]{inputenc}
% Color
\usepackage{color}
\definecolor{lightgray}{gray}{0.95}

\DeclareUnicodeCharacter{43612}{\spiral}

%document
\begin{document}{\textcolor{lightgray}{a}}\spiral{\textcolor{lightgray}{b}}
\end{document}

但我得到了

! Undefined control sequence.
l.13 ...document}{\textcolor{lightgray}{a}}\spiral
                                              {\textcolor{lightgray}{b}}

编辑：我知道如何查找符号或识别数学符号或字符？. 没有一个答案给我一个螺旋符号。

答案1

我认为，如果字体样本可供查看，则它们属于公共领域。因此，搜索带有螺旋符号的字体产生了许多想法。

下面我使用了Altemus 螺旋常规字体PDF 示例：

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然后你可以剪掉你感兴趣的元素：

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\documentclass{article}
\usepackage{graphicx}
\newcommand{\spiral}[1][]{\includegraphics[
  height=.7\baselineskip,
  origin=c,% For rotation purposes, rotate around centre
  viewport=154mm 173mm 176mm 194mm,clip,
  #1% Any other graphicx options
  ]{altemus_spiral_regular}%
}
\begin{document}
{\setlength{\fboxsep}{0pt}\fbox{\spiral}}

\spiral{}
\spiral[angle=90]
\reflectbox{\spiral}

A regular \spiral{} together with text and even \spiral[angle=180] rotated.
\end{document}

或者，如果您可以使用包含螺旋的字体，则可以直接使用 XeLaTeX 或 LauLaTeX。

答案2

我从您提供的链接并将其导出到使用 Inkscape 的 TikZ 路径。以下是经过一些手动调整后的结果：

\documentclass{article}
\usepackage{tikz}

\newcommand\spiral{%
  \begin{tikzpicture}[y=.009ex,x=.009ex,yscale=-1]
    \path[fill] (74.2500,379.5469) -- (62.4375,373.3594) .. controls
      (83.4375,365.2031) and (99.6563,356.1563) .. (111.0938,346.2188) .. controls
      (122.5313,336.2813) and (131.0625,324.9375) .. (136.6875,312.1875) .. controls
      (142.3125,299.4375) and (145.1250,284.4375) .. (145.1250,267.1875) .. controls
      (145.1250,256.6875) and (141.9375,247.5000) .. (135.5625,239.6250) .. controls
      (129.1875,231.7500) and (121.7813,226.3125) .. (113.3438,223.3125) .. controls
      (104.9063,220.3125) and (95.6250,218.8125) .. (85.5000,218.8125) .. controls
      (75.3750,218.8125) and (66.0937,220.3125) .. (57.6562,223.3125) .. controls
      (49.2187,226.3125) and (41.8125,231.7500) .. (35.4375,239.6250) .. controls
      (29.0625,247.5000) and (25.8750,256.6875) .. (25.8750,267.1875) .. controls
      (25.8750,277.6875) and (27.3750,286.9687) .. (30.3750,295.0312) .. controls
      (33.3750,303.0937) and (38.1563,308.9063) .. (44.7188,312.4688) .. controls
      (51.2813,316.0313) and (59.2500,317.8125) .. (68.6250,317.8125) .. controls
      (73.6875,317.8125) and (77.5782,316.7813) .. (80.2969,314.7188) .. controls
      (83.0156,312.6563) and (85.2187,309.7500) .. (86.9062,306.0000) .. controls
      (88.5937,302.2500) and (89.4375,297.3750) .. (89.4375,291.3750) .. controls
      (89.0625,288.3750) and (88.4063,285.6563) .. (87.4688,283.2188) .. controls
      (86.5313,280.7813) and (85.0313,278.9063) .. (82.9688,277.5938) .. controls
      (80.9063,276.2813) and (78.3750,275.6250) .. (75.3750,275.6250) .. controls
      (72.9375,275.6250) and (70.5469,277.1250) .. (68.2031,280.1250) .. controls
      (65.8594,283.1250) and (63.7500,288.4219) .. (61.8750,296.0156) --
      (57.6562,295.8750) .. controls (55.5937,295.8750) and (54.0937,295.4063) ..
      (53.1562,294.4688) .. controls (52.2187,293.5313) and (51.7500,292.5000) ..
      (51.7500,291.3750) .. controls (51.7500,286.5000) and (52.6875,281.7187) ..
      (54.5625,277.0312) .. controls (56.4375,272.3437) and (59.2500,268.5000) ..
      (63.0000,265.5000) .. controls (66.7500,262.5000) and (70.8750,261.0000) ..
      (75.3750,261.0000) .. controls (80.6250,261.0000) and (85.4063,262.1250) ..
      (89.7188,264.3750) .. controls (94.0313,266.6250) and (97.4063,270.0937) ..
      (99.8438,274.7812) .. controls (102.2813,279.4687) and (103.5000,285.0000) ..
      (103.5000,291.3750) .. controls (103.5000,299.6250) and (102.3750,306.5625) ..
      (100.1250,312.1875) .. controls (97.8750,317.8125) and (94.0313,322.5937) ..
      (88.5938,326.5312) .. controls (83.1563,330.4687) and (76.5000,332.4375) ..
      (68.6250,332.4375) .. controls (57.3750,332.4375) and (47.0625,329.8125) ..
      (37.6875,324.5625) .. controls (28.3125,319.3125) and (21.5625,311.5313) ..
      (17.4375,301.2188) .. controls (13.3125,290.9063) and (11.2500,279.5625) ..
      (11.2500,267.1875) .. controls (11.2500,254.0625) and (14.2500,241.9687) ..
      (20.2500,230.9062) .. controls (26.2500,219.8437) and (35.1563,211.3125) ..
      (46.9688,205.3125) .. controls (58.7813,199.3125) and (71.6250,196.3125) ..
      (85.5000,196.3125) .. controls (99.3750,196.3125) and (112.2187,199.3125) ..
      (124.0312,205.3125) .. controls (135.8437,211.3125) and (144.7500,219.8437) ..
      (150.7500,230.9062) .. controls (156.7500,241.9687) and (159.7500,254.0625) ..
      (159.7500,267.1875) .. controls (159.7500,287.4375) and (156.5625,304.7813) ..
      (150.1875,319.2188) .. controls (143.8125,333.6563) and (134.0625,346.1250) ..
      (120.9375,356.6250) .. controls (107.8125,367.1250) and (92.2500,374.7656) ..
      (74.2500,379.5469) -- cycle;
  \end{tikzpicture}%
}

\begin{document}

\Huge A\spiral B
\LARGE A\spiral B
\Large A\spiral B
\large A\spiral B
A\spiral B
\small A\spiral B
\footnotesize A\spiral B
\scriptsize A\spiral B
\tiny A\spiral B

\end{document}

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即使你不想使用 XeLaTeX，这对其他人来说也可能有用。Code2000 字体（具有奇数许可证的共享软件）和诺托无疆拥有这个特定的角色。你可以使用它像

\fontspec{CODE2000.TTF}꩜

或者

\fontspec{CODE2000.TTF}^^^^aa5c

以下是假 TikZ 符号与 Code2000 和 Noto Sans Cham 符号的比较：

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由于 Noto Sans Cham 仅涵盖 Unicode 的 Cham 范围，因此拉丁字母缺失并由矩形代替。

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