TikZ 不接受除 `intersection-1` 和 `intersection-2` 之外的交叉点名称

Question

这是我的 MWE：

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric}
\usetikzlibrary{intersections}
\begin{document}
\begin{figure}
\begin{tikzpicture}[scale=3]


\draw[name path={circle}] (0,0) circle(1cm);


\draw[name path={h1}] (-2,0) -- (2,0);
\draw[name path={h2}] (-2,0.8) -- (2,0.8);

    \fill[name intersections={of=circle and h2}]
    (intersection-1) circle(0.5pt)
    (intersection-2) circle(0.5pt);

\fill[red] (0,0) circle(1pt);

\draw[ultra thick] (intersection-1)--(intersection-2);

\end{tikzpicture}
\end{figure}
\end{document}

简单来说，我想标记一个圆和一条线之间的交点，并在这些点之间画一条粗线。

上述代码运行正常。但是当我将交叉点的名称从(intersection-1)和更改为和 之(intersection-2)类的名称时，我收到错误：i1i2

! Package pgf Error: No shape named i1 is known.
! Package pgf Error: No shape named i2 is known.

交叉路口的名称必须以单词 开头吗intersection？

Answer 1

https://tex.stackexchange.com/a/478227/197451

相关行是

\path [name intersections={of=D and E, by={C, C’}}];

这里计算交点并命名为C和C'（“将 D 和 E 的交点命名为 C 和 C'”）。

这是快捷方式

\coordinate (C) at ...;
\coordinate (C') at ...;

对于一些计算出的坐标。

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric}
\usetikzlibrary{intersections}
\begin{document}
\begin{figure}
\begin{tikzpicture}[scale=3]


\draw[name path={circle}] (0,0) circle(1cm);


\draw[name path={h1}] (-2,0) -- (2,0);
\draw[name path={h2}] (-2,0.8) -- (2,0.8);

    \fill[red, name intersections={of=circle and h2, by={C, C'}}]
    (C) circle(1pt)
    (C') circle(1pt);

\fill[red] (0,0) circle(1pt);

\draw[ultra thick, red] (C)--(C');

\end{tikzpicture}
\end{figure}
\end{document}

编辑

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric}
\usetikzlibrary{intersections}
\begin{document}
\begin{figure}
\begin{tikzpicture}[scale=3]


\draw[name path={circle}] (0,0) circle(1cm);


\draw[name path={h1}] (-2,0) -- (2,0);
\draw[name path={h2}] (-2,0.8) -- (2,0.8);

    \path[name intersections={of=circle and h2, by={C, C'}}];

\fill[red] (0,0) circle(1pt);

\draw[ultra thick, red] (C)--(C');

\end{tikzpicture}
\end{figure}
\end{document}