Ciao a tutti. Mi aiutate a migliorare questa figura?
`\documentclass{article}
\usepackage[dvipsnames]{xcolor}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}[scale=0.9,font=\small]
\draw
(-0.8,-4.4) — (0.8,-4.4) — (0.6,-3.6) — (-0.6,-3.6) — cycle;
\draw
(-0.8,-4.6) rectangle (0.8,-4.4);
\draw [thick, right color=BrickRed, left color=white] (-0.1,0.5) rectangle (0.1,-4);
\draw [thick, top color=lightgray, bottom color=white] (-2.75,-0.15) rectangle (2.75,0.15);
\draw (-2.5,0) [fill=white] circle (2pt);
\draw (-2,0) [fill=white] circle (2pt);
\draw (-1.5,0) [fill=white] circle (2pt);
\draw (-1,0) [fill=white] circle (2pt);
\draw (-0.5,0) [fill=white] circle (2pt);
\draw (0,0) [fill=white] circle (2pt);
\draw (0.5,0) [fill=white] circle (2pt);
\draw (1,0) [fill=white] circle (2pt);
\draw (1.5,0) [fill=white] circle (2pt);
\draw (2,0) [fill=white] circle (2pt);
\draw (2.5,0) [fill=white] circle (2pt);
\draw (0,0.5) [fill=BrickRed] ellipse (0.1 and 0.05);
\draw (0,-4)
ellipse (0.1 and 0.05); % non ci siamo!!!
\draw (0,0) — (0.5,-0.5) node [below right=-4pt] {fulcro};
\draw (2.25,0) — (2.75,-0.5) node [below right=-4pt] {asta};
\draw (0,-2.5) — (0.5,-3) node [below right=-4pt] {supporto};
\end{tikzpicture}
\end{document}`
Quello che non va è la base del supporto. Ci vorrebbe solo l’arco in basso dell’ellisse, e non quello in alto. In altre parole, ci vorrebbe una semiellisse.
Grazie anticipate!