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\documentclass{beamer} %
\usetheme{CambridgeUS}
\usepackage[latin1]{inputenc}
\usefonttheme{professionalfonts}
\usepackage{times}
\usepackage{tikz}
\usepackage{amsmath}
\usepackage{verbatim}
\usetikzlibrary{arrows,shapes}
\author{Author}
\title{Presentation title}
\begin{document}
\begin{comment}
:Title: Beamer arrows
:Tags: Remember picture, Beamer, Physics & chemistry, Overlays
:Use page: 3
With PGF/TikZ version 1.09 and later, it is possible to draw paths between nodes across
different pictures. This is a useful feature for presentations with the
Beamer package. In this example I've combined the new PGF/TikZ's overlay feature
with Beamer overlays. Download the PDF version to see the result.
**Note.** This only works with PDFTeX, and you have to run PDFTeX twice.
| Author: Kjell Magne Fauske
\end{comment}
% For every picture that defines or uses external nodes, you'll have to
% apply the 'remember picture' style. To avoid some typing, we'll apply
% the style to all pictures.
\tikzstyle{every picture}+=[remember picture]
% By default all math in TikZ nodes are set in inline mode. Change this to
% displaystyle so that we don't get small fractions.
\everymath{\displaystyle}
\begin{frame}
\frametitle{Rigid body dynamics}
\tikzstyle{na} = [baseline=-.5ex]
\begin{itemize}[<+-| alert@+>]
\item Coriolis acceleration
\tikz[na] \node[coordinate] (n1) {};
\end{itemize}
% Below we mix an ordinary equation with TikZ nodes. Note that we have to
% adjust the baseline of the nodes to get proper alignment with the rest of
% the equation.
\begin{equation*}
\vec{a}_p = \vec{a}_o+\frac{{}^bd^2}{dt^2}\vec{r} +
\tikz[baseline]{
\node[fill=blue!20,anchor=base] (t1)
{$ 2\vec{\omega}_{ib}\times\frac{{}^bd}{dt}\vec{r}$};
} +
\tikz[baseline]{
\node[fill=red!20, ellipse,anchor=base] (t2)
{$\vec{\alpha}_{ib}\times\vec{r}$};
} +
\tikz[baseline]{
\node[fill=green!20,anchor=base] (t3)
{$\vec{\omega}_{ib}\times(\vec{\omega}_{ib}\times\vec{r})$};
}
\end{equation*}
\begin{itemize}[<+-| alert@+>]
\item Transversal acceleration
\tikz[na]\node [coordinate] (n2) {};
\item Centripetal acceleration
\tikz[na]\node [coordinate] (n3) {};
\end{itemize}
% Now it's time to draw some edges between the global nodes. Note that we
% have to apply the 'overlay' style.
\begin{tikzpicture}[overlay]
\path[->]<1-> (n1) edge [bend left] (t1);
\path[->]<2-> (n2) edge [bend right] (t2);
\path[->]<3-> (n3) edge [out=0, in=-90] (t3);
\end{tikzpicture}
\end{frame}
\end{document}
