如何用箭头和圆圈装饰线条

Question

我想画一个箭头（光线），上面覆盖垂直双箭头和圆圈（以显示 s 和 p 极化），但我对装饰命令感到困惑。我已经包含了目前所拥有的内容，您能帮助我进一步吗？

我目前拥有的：

（粗糙的模型）我想要的：

\documentclass{article}
\usepackage{tikz, pgfplots}
\usetikzlibrary{shapes,arrows,positioning,decorations.markings}

\begin{document}
\begin{tikzpicture}[scale=0.7]

    \draw [red, line width=1mm, <-]  (0,0) -- (150:5.2)
        [postaction={decorate,decoration={markings,
        mark=between positions 0.2 and 0.9 step 0.2 with {\arrow[red, line width=1mm]{|};}
        }}]
        [postaction={decorate,decoration={markings,
        mark=between positions 0.3 and 0.9 step 0.2 with {\circle{8};}
        }}]
        ;       

\end{tikzpicture}
\end{document}

Answer 1

标记具有局部坐标系，其中 x 方向沿切线，y 方向沿法线，因此您可以使用该坐标系绘制事物。

\documentclass[tikz]{standalone}

\usetikzlibrary{shapes,arrows,positioning,decorations.markings}

\begin{document}
\begin{tikzpicture}[scale=0.7]
    \draw [red, line width=1mm, <-, 
        postaction={decorate,decoration={markings,
        mark=between positions 0.2 and 0.9 step 0.2 with {\draw [<->,red,thin] (0,-2mm) -- (0,2mm);}
        }}
        ,postaction={decorate,decoration={markings,
        mark=between positions 0.3 and 0.9 step 0.2 with {\draw[thin,blue] circle (3pt);}
        }}]
         (0,0) -- (150:5.2);       

\end{tikzpicture}
\end{document}