填充颜​​色问题

Question

我使用以下命令创建正多边形。第 5 个参数用于插入用于设置多边形样式的选项。虽然我设置的线宽为 0.3 毫米，但看起来该fill=red选项不被接受。

\documentclass{article}
\usepackage{amsmath,tikz,tkz-euclide,pgfplots,calculator}

\newcommand\polygon[5][]
{\pgfmathsetmacro{\angle}{360/#2}
\pgfmathsetmacro{\a}{(#2-1)/2}
\FLOOR{\a}{\sol}
\pgfmathsetmacro{\startangle}{-90 + \angle/2}
\foreach \i in {1,2,...,#2}
{\pgfmathsetmacro{\x}{\startangle + \angle*\i}
\draw[#5] (\x:#3) --  (\x + \angle:#3) -- cycle;
\tkzDefPoint(\x:#3){A_#2}
\tkzDrawPoint(A_#2)}
\foreach [count=\i] \j in {#4}{
\pgfmathsetmacro{\x}{\startangle - \angle*(\i+\sol)}
\node[anchor=center] at (\x:#3+.3) {$\j$};}}

\begin{document}
\begin{tikzpicture}
\draw[line width=0.3mm] (0,0) circle (1);
\polygon[]{6}{1}{A,B,\varGamma,\varDelta,E,Z}{line width=0.3mm,fill=red}

\end{tikzpicture}
\end{document}

我不知道命令的结构是否不允许任何其他选项。

Answer 1

我想知道你为什么不采用这样的方法

\documentclass{article}
\usepackage{amsmath,tikz}
\usetikzlibrary{shapes}

\newcommand\polygon[5][]{%
    \node[draw,#5,regular polygon,regular polygon sides=#2,minimum size=2*#3cm] (p) {};
    \foreach \i[count=\j] in {#4} {
        \path (p.center)--(p.corner \j) node[pos=1.2] {$\i$};
    }
}

\begin{document}
\begin{tikzpicture}
\draw[line width=0.3mm] (0,0) circle (1);
\polygon[]{6}{1}{A,B,\varGamma,\varDelta,E,Z}{line width=0.3mm,fill=red}
\end{tikzpicture}
\end{document}

不过，我认为您不应该为此定义宏。

---

如果你想走自己的路，克皮姆已经给出了正确的方法：使用(0,0)而不是cycle。但是，还得再多做一点。而且，还会有一条非常细的白线。

\documentclass{article}
\usepackage{amsmath,tikz,tkz-euclide,pgfplots,calculator}

\newcommand\polygon[5][]{%
    \pgfmathsetmacro{\angle}{360/#2}
    \pgfmathsetmacro{\a}{(#2-1)/2}
    \FLOOR{\a}{\sol}
    \pgfmathsetmacro{\startangle}{-90 + \angle/2}
    \foreach \i in {1,2,...,#2} {
        \pgfmathsetmacro{\x}{\startangle + \angle*\i}
        \fill[#5] (\x:#3) --  (\x + \angle:#3) -- (0,0);
        \draw[#5] (\x:#3) --  (\x + \angle:#3);
        \tkzDefPoint(\x:#3){A_#2}
        \tkzDrawPoint(A_#2)
    }
    \foreach [count=\i] \j in {#4} {
        \pgfmathsetmacro{\x}{\startangle - \angle*(\i+\sol)}
        \node[anchor=center] at (\x:#3+.3) {$\j$};
    }
    \foreach \i in {1,2,...,#2} {
        \pgfmathsetmacro{\x}{\startangle + \angle*\i}
        \tkzDefPoint(\x:#3){A_#2}
        \tkzDrawPoint(A_#2)
    }
}

\begin{document}
\begin{tikzpicture}
\draw[line width=0.3mm] (0,0) circle (1);
\polygon[]{6}{1}{A,B,\varGamma,\varDelta,E,Z}{line width=0.3mm,fill=red}

\end{tikzpicture}
\end{document}