使用 tikz 在斧头上施加激光脉冲

Question

我想用 tikz 在 3d 斧头和 CO2 分子上画激光。以下代码

\begin{tikzpicture}[x={(0.707cm,0.707cm)},z={(0cm,1cm)},y= 
{(-0.866cm,0.5cm)},declare function={RCO=2.2;}]
\draw[->] (-3,0,0) -- (3,0,0) node[right] {z};
\draw[->] (0,-3,0) -- (0,3,0) node[left] {x};
\draw[->] (0,0,-3) -- (0,0,2*3.141592654) node[above] {y};
\draw (1,0,0)
\foreach \z in {3.141592654,3.2,...,6.28}
{ -- (0,{cos(\z*200)},{\z}) % 1 = cos(\z*400) %{sin(\z*100)}
};
\filldraw[ball color=red] (0,-2) circle (\Rh);
\filldraw[ball color=black] (0,0) circle (\Rh);
\filldraw[ball color=red] (0,2) circle (\Rh);
\end{tikzpicture}

在激光和轴之间生成一条线。您知道如何移除它吗？

Answer 1

\documentclass[tikz, border = 5pt]{standalone}


\begin{document}

\newcommand{\Rh}{0.12}

\begin{tikzpicture}[x={(0.707cm,0.707cm)},z={(0cm,1cm)},y= 
  {(-0.866cm,0.5cm)},declare function={RCO=2.2;}]
  \draw[->] (-3,0,0) -- (3,0,0) node[right] {z};
  \draw[->] (0,-3,0) -- (0,3,0) node[left] {x};
  \draw[->] (0,0,-3) -- (0,0,2*3.141592654) node[above] {y};
  \draw[thick, red] (0,0,3.141592654)
  \foreach \z in {3.141592654,3.2,...,6.28}
  { -- (0,{cos(\z*200)},{\z}) % 1 = cos(\z*400) %{sin(\z*100)}
  };
  \filldraw[ball color=red] (0,-2) circle (\Rh);
  \filldraw[ball color=black] (0,0) circle (\Rh);
  \filldraw[ball color=red] (0,2) circle (\Rh);
\end{tikzpicture}
\end{document}

Answer 2

\documentclass[tikz,border=3.14mm]{standalone}
\begin{document}
\def\Rh{0.2}
\begin{tikzpicture}[x={(0.707cm,0.707cm)},z={(0cm,1cm)},y= 
{(-0.866cm,0.5cm)},declare function={RCO=2.2;}]
\draw[->] (-3,0,0) -- (3,0,0) node[right] {z};
\draw[->] (0,-3,0) -- (0,3,0) node[left] {x};
\draw[->] (0,0,-3) -- (0,0,2*3.141592654) node[above] {y};
\draw plot[variable=\z,domain={pi}:{2*pi},samples=100]
(0,{cos(\z*200)},{\z});
\filldraw[ball color=red] (0,-2) circle (\Rh);
\filldraw[ball color=black] (0,0) circle (\Rh);
\filldraw[ball color=red] (0,2) circle (\Rh);
\end{tikzpicture}
\end{document}