如何在 CircuiTikZ 中彻底为电解电容器着色？

Question

我可以改变几乎所有组件的颜色CircuiTikZ使用此处解释的方法：Circuitikz 线和组件颜色

以下示例显示了我的电解电容器存在的问题，因为加号和填充保持黑色：

\documentclass[border=3mm]{standalone}
\usepackage[siunitx,european]{circuitikz}

\begin{document}
    \begin{circuitikz}
        \draw (0,2) to [diode] (0,0);
        \draw[blue] (1,2) to [diode, color=blue] (1,0);
        \draw (3,2) to [elko] (3,0);
        \draw[blue] (4,2) to [elko, color=blue] (4,0);
    \end{circuitikz}
\end{document}

我添加了一个二极管的示例，其中着色正常工作以使问题更加清晰。

Answer 1

不幸的是，你不能。很多地方都硬编码了“黑色”。这可能是一个错误，我应该用基本颜色来更改它...我会研究一下。

同时我可以给你一个技巧，重新定义一个更好的 elko：

\documentclass[border=3mm]{standalone}
\usepackage[siunitx,european]{circuitikz}

\makeatletter
%% Electrolytic Capacitor
\pgfcircdeclarebipolescaled{capacitors}
{}
{\ctikzvalof{bipoles/ecapacitor/height}}
{ecapacitor}
{\ctikzvalof{bipoles/ecapacitor/height}}
{\ctikzvalof{bipoles/ecapacitor/width}}
{
    \pgfsetrectcap
    % % % Draw plus pole
    \pgf@circ@setlinewidth{bipoles}{\pgfstartlinewidth}
    \pgfpathmoveto{\pgfpoint{\pgf@circ@res@left}{\pgf@circ@res@up}}
    \pgfpathlineto{\pgfpoint{.4\pgf@circ@res@left}{\pgf@circ@res@up}}
    \pgfpathlineto{\pgfpoint{.4\pgf@circ@res@left}{\pgf@circ@res@down}}
    \pgfpathlineto{\pgfpoint{\pgf@circ@res@left}{\pgf@circ@res@down}}
    \pgfpathlineto{\pgfpoint{\pgf@circ@res@left}{\pgf@circ@res@up}}
    \pgf@circ@draworfill
    % % Draw minus pole
    \pgfpathmoveto{\pgfpoint{\pgf@circ@res@right}{\pgf@circ@res@up}}
    \pgfpathlineto{\pgfpoint{.4\pgf@circ@res@right}{\pgf@circ@res@up}}
    \pgfpathlineto{\pgfpoint{.4\pgf@circ@res@right}{\pgf@circ@res@down}}
    \pgfpathlineto{\pgfpoint{\pgf@circ@res@right}{\pgf@circ@res@down}}
    \pgfpathlineto{\pgfpoint{\pgf@circ@res@right}{\pgf@circ@res@up}}
    \pgfsetfillcolor{\ctikzvalof{color}}
    \pgfusepath{draw,fill}
    \pgfsetcolor{\ctikzvalof{color}}
    % % plus pole annotation
    \pgftext[right,at=\pgfpoint{1.2\pgf@circ@res@left}{.6\pgf@circ@res@up}]
    {\ctikzvalof{bipoles/ecapacitor/font} $+$}
}
\makeatother

\begin{document}
    \begin{circuitikz}
        \draw (0,2) to [diode] (0,0);
        \draw[blue] (1,2) to [diode, color=blue] (1,0);
        \draw (3,2) to [elko] (3,0);
        \draw[color=blue] (4,2) to [elko, color=blue] (4,0);
    \end{circuitikz}
\end{document}

PD 在很多地方它都不是硬编码的......我会修好它。

或者，

\documentclass[border=3mm]{standalone}
\usepackage[siunitx,european]{circuitikz}
\tikzset{ccolor/.code=\colorlet{black}{#1}}
\begin{document}
    \begin{circuitikz}
        \draw (0,2) to [diode] (0,0);
        \draw (1,2) to [diode, ccolor=blue] (1,0);
        \draw (3,2) to [elko] (3,0);
        \draw (4,2) to [elko, ccolor=blue] (4,0);
    \end{circuitikz}
\end{document}