How to animate this project

Question

I'm Brazilian, 18 years old and I have a final project in the first half in my university. I found here a code of one analog clock and I made a modification to create a speedometer. I wonder how I can animate with autoplay.

\documentclass[tikz,border=0pt,dvipsnames]{standalone}
\usepackage{animate}
\usepackage{tikz}

\begin{document}

\foreach \hdeg / \mdeg in {0/0,2/30,4/60,6/90,8/120,10/150,12/180,14/210,
16/240}{ % pontos do mínimo ao máximo de rotação


\begin{tikzpicture}[line cap=round,line width=3pt]

\filldraw [fill=white!30] (0,0) circle (2cm); % cor e tamanho do círculo

\foreach \angle / \label in
{0/140, 30/120, 60/100, 90/80, 120/60, 150/40, 180/20,
210/0, 330/160} % Kilômetros
{
\draw[line width=2pt] (\angle:1.7cm) -- (\angle:2cm); % grossura e ângulo dos tracinhos dos KM's
\draw (\angle:1.4cm) node{\textsf{\label}};
}

\foreach \angle / \label in
{15/, 45/, 75/, 105/, 135/, 165/, 195/,345/, 270/SENAC-SP} % traços dos KM's sem número
{
\draw[line width=1pt] (\angle:1.8cm) -- (\angle:2cm);
\draw (\angle:1.4cm) node{\textsf{\label}};
}
\foreach \angle in {0,90,180,270}
\draw[line width=2pt] (\angle:2cm) -- (\angle:2cm);

\node[draw=none,font=\tiny,text=red] at (0,0.3cm) {Velocimetro PI - 1}; %texto

\draw[rotate=210,line width=1.5pt] (0,0) -- (-\mdeg:1cm); % ponteiro

\path [fill=red] (0,0) circle (3pt); % borda do círculo do ponteiro

\path [fill=white] (0,0) circle (2pt); % círculo do ponteiro

\end{tikzpicture}

}

\end{document}

Answer 1

This is a possible solution where animationinline is used from animate package. Please copy and paste, then compile to see the animation. Basically, one wraps the tikzpicture in an animationinline environment as shown below. Here controls means push bottoms are shown while autoplay won't have push bottoms. {10} means frames per section. imedeg is an integer variable; for real variables one uses rxxx for example. 0+1 means start counting from 0, 1, 2,... while 1+1 means start counting from 1,2,3,...

\begin{animateinline}[poster=first,controls]{10}
\multiframe{9}{imdeg=0+1}
{
tikzpicture environment where \imdeg is the counter
}
\end{animationinline}

Addendum: a second method is addressed.

\multido{\imdeg=0+1}{9}                              
{    
\begin{preview}
tikzpicture environment where \imdeg is the counter
\end{preview}
}

Code

\documentclass[border=10pt]{standalone}
\usepackage{animate}
\usepackage{tikz}

\begin{document}

\begin{animateinline}[poster=first,controls]{10}
\multiframe{9}{imdeg=0+1}
%\foreach \hdeg / \mdeg in {0/0,2/30,4/60,6/90,8/120,10/150,12/180,14/210,16/240}
{ % pontos do mínimo ao máximo de rotação
\begin{tikzpicture}[line cap=round,line width=3pt]
\filldraw [fill=white!30] (0,0) circle (2cm); % cor e tamanho do círculo
\foreach \angle / \label in
{0/140, 30/120, 60/100, 90/80, 120/60, 150/40, 180/20,
210/0, 330/160} % Kilômetros
{
\draw[line width=2pt] (\angle:1.7cm) -- (\angle:2cm); % grossura e ângulo dos tracinhos dos KM's
\draw (\angle:1.4cm) node{\textsf{\label}};
}
\foreach \angle / \label in
{15/, 45/, 75/, 105/, 135/, 165/, 195/,345/, 270/SENAC-SP} % traços dos KM's sem número
{\draw[line width=1pt] (\angle:1.8cm) -- (\angle:2cm);
\draw (\angle:1.4cm) node{\textsf{\label}};
}
\foreach \angle in {0,90,180,270}
\draw[line width=2pt] (\angle:2cm) -- (\angle:2cm);
\node[draw=none,font=\tiny,text=red] at (0,0.3cm) {Velocimetro PI - 1}; %texto
\draw[rotate=210,line width=1.5pt] (0,0) -- (-\imdeg*30:1cm); % ponteiro%%%
\path [fill=red] (0,0) circle (3pt); % borda do círculo do ponteiro
\path [fill=white] (0,0) circle (2pt); % círculo do ponteiro
\end{tikzpicture}
}
\end{animateinline}
\end{document}

Addendum: A second approach is use of multido package with preview.

Code:

\documentclass{standalone}%[border=10pt]{standalone}
\usepackage{animate}
\usepackage{tikz}
\usepackage{multido}
\usepackage[active,tightpage]{preview}

\begin{document}
\multido{\imdeg=0+1}{9}                              
%\foreach \hdeg / \mdeg in {0/0,2/30,4/60,6/90,8/120,10/150,12/180,14/210,16/240}
{ % pontos do mínimo ao máximo de rotação
\begin{preview}                                         
\begin{tikzpicture}[line cap=round,line width=3pt]
\filldraw [fill=white!30] (0,0) circle (2cm); % cor e tamanho do círculo
\foreach \angle / \label in
{0/140, 30/120, 60/100, 90/80, 120/60, 150/40, 180/20,
210/0, 330/160} % Kilômetros
{
\draw[line width=2pt] (\angle:1.7cm) -- (\angle:2cm); % grossura e ângulo dos tracinhos dos KM's
\draw (\angle:1.4cm) node{\textsf{\label}};
}
\foreach \angle / \label in
{15/, 45/, 75/, 105/, 135/, 165/, 195/,345/, 270/SENAC-SP} % traços dos KM's sem número
{\draw[line width=1pt] (\angle:1.8cm) -- (\angle:2cm);
\draw (\angle:1.4cm) node{\textsf{\label}};
}
\foreach \angle in {0,90,180,270}
\draw[line width=2pt] (\angle:2cm) -- (\angle:2cm);
\node[draw=none,font=\tiny,text=red] at (0,0.3cm) {Velocimetro PI - 1}; %texto
\draw[rotate=210,line width=1.5pt] (0,0) -- (-{\imdeg*30}:1cm); % ponteiro%%%
\path [fill=red] (0,0) circle (3pt); % borda do círculo do ponteiro
\path [fill=white] (0,0) circle (2pt); % círculo do ponteiro
\end{tikzpicture}
\end{preview}                                           
}
\end{document}