%% %% This is file `slidesdemo.tex', %% generated with the docstrip utility. %% %% The original source files were: %% %% texpower-doc.dtx (with options: `slidesdemo') %% %% -------------------------------------------------------------- %% TeXPower bundle - dynamic online presentations with LaTeX %% Copyright (C) 1999-2004 Stephan Lehmke %% %% This program is free software; you can redistribute it and/or %% modify it under the terms of the GNU General Public License %% as published by the Free Software Foundation; either version 2 %% of the License, or (at your option) any later version. %% %% This program is distributed in the hope that it will be useful, %% but WITHOUT ANY WARRANTY; without even the implied warranty of %% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the %% GNU General Public License for more details. %% -------------------------------------------------------------- %% %% The list of all files belonging to the TeXPower bundle is %% given in the file `00readme.txt'. %% \ProvidesFile{slidesdemo.tex}% [2004/07/27 TeXPower example file] %----------------------------------------------------------------------------------------------------------------- % File: slidesdemo.tex % % Simple examples the for combining the slides class with the dynamic features provided by the package texpower.sty. % %----------------------------------------------------------------------------------------------------------------- % Autor: Stephan Lehmke % % v0.0.1 May 25, 2000: First version for the pre-alpha release of TeXPower. % \documentclass[landscape]{slides} % slides understands the landscape option, but to get it through to pdflatex, we need to set \pdfpageheight etc. The % package fixseminar does this. \usepackage{fixseminar} % We need to set this page style globally so all dynamically built slides have the right headers. \pagestyle{slide} %----------------------------------------------------------------------------------------------------------------- % The texpower package is loaded. % We give the display option so dynamic features are enabled. % \usepackage[display]{texpower} \begin{document} \begin{slide} \title{The \code{texpower} Package\\{\normalfont \texttt{slides} Demo}} \author{Stephan Lehmke\\\code{mailto:Stephan.Lehmke@cs.uni-dortmund.de}} \maketitle \end{slide} \begin{slide} \begin{center} \textbf{A list environment} \end{center} % The \pause command `splits' the current page at the place it appears, producing two pages, one with everything which % came before the \pause command, one containing this and additionally the stuff coming after \pause. When these pages % are presented with acrobar reader in full screen mode (or any other viewer with this capability), the presentation % will appear to `stop' at the point the \pause command was issued and `resume' in the moment the presenter switches to % the next page. \pause % As \pause forces a paragraph break, it can not be used to separate a description label from the associated text. For % this, we use the (very flexible) \stepwise command. Inside the argument of \stepwise, an arbitrary number of \step % commands may occur. \stepwise will produce as many pages as there are \step commands, making the arguments of the % \step commands appear ``one by one''. \stepwise {% \begin{description} \item[foo.] \step{bar.} \step{\item[baz.]} \step{qux.} \end{description} } \end{slide} \begin{slide} \begin{center} \textbf{An aligned equation} \end{center} \pause % Normally for \stepwise, if a \step is not yet active, its argument is ignored completely. This would disturb % alignments, because the width changes with every new activated \step. % \parstepwise is a variant of \stepwise where the argument of an inactive \step is put into a \phantom, leaving the % proper amount of white space. \parstepwise {% % Using eqnarray with equation numbers here means all equation numbers will be visible from the outset, because only % the contents of the lines are `filled in'. See the full demo for an example of aligned equations where equation % numbers `appear'. \begin{eqnarray} % % When the argument of \step is put into a box (as it happens with \parstepwise), tabulators can not go in there. As % we want the equals sign to appear at the same time as the right side of the equation, we use \restep for the % latter. \restep is like \step, but it appears at the same time as the previous \step command. % \sum_{i=1}^{n} i & \step{=} & \restep{1 + 2 + \cdots + (n-1) + n}\\ % & \step{=} & \restep{1 + n + 2 + (n-1) + \cdots}\\ % & \step{=} & \restep {% We can nest \step commands inside each other. The order of execution is just the % order of appearance, independent of nesting. % \switch is a variant of \step which takes two arguments and toggles between them on % activation. This way, we can make the \underbrace `appear'. % We insert a \vphantom in the first argument so that the equation numbers will be % placed correctly whether or not the underbrace is didplayed. \switch {% \vphantom{\underbrace{(1 + n) + \cdots + (1 + n)}_{\times\frac{n}{2}}}% (1 + n) + \cdots + (1 + n)% } {\underbrace{(1 + n) + \cdots + (1 + n)}_{\times\frac{n}{2}}}% } \\ % % This is another nested application of \step. Note that the spacing of \cdot has to be corrected manually by % inserting {} left of it, because otherwise it would behave like a prefix operator. % & \step{=} & \restep{\frac{(1 + n)\step{{}\cdot n}}{\restep{2}}} \end{eqnarray} } \end{slide} \begin{slide} \begin{center} \textbf{An array} \end{center} \stepwise {% With arrays, beware of problems with automatic calculation of cell widths. % % If you want all widths to be calculated automatically, you need to use \parstepwise, with the consequence that % a) tabulators or newlines can not go into the argument of \step, % b) the array `structure' (rules) will be completely visible right from the beginning. % % If you want to use \stepwise for being able to build the `structure' (like \hilne's) dynamically (as done in the % following), you have to make sure that the cell widths are correct from the very first line, because otherwise the % array will expand horizontally, destroying the dynamic effect. This can be assured by % a) using only p cells, % b) making sure all the cells in the first line are at least as wide as the widest cell which will appear later. If % you are using the calc package, this is easiest by putting \makebox[\widthof{widest entry}]{first entry} into % the first cell. Otherwise, you can use \settowidth. % \begin{displaymath} \begin{array}{rrrrr} \step {% n & \log n & n\log n & \lefteqn{n^2}\phantom{25} & \lefteqn{2^n}\phantom{32} \\ \hline% }% \step{0 &} \step{\textrm{---} &} \step{\textrm{---} &} \step{0 &} \step{1 \\}% \step{1 &} \step{0\phantom{.6} &} \step{0\phantom{.8} &} \step{1 &} \step{2 \\}% \step{2 &} \step{1\phantom{.6} &} \step{2\phantom{.8} &} \step{4 &} \step{4 \\}% \step{3 &} \step{1.6 &} \step{4.8 &} \step{9 &} \step{8 \\}% \step{4 &} \step{2\phantom{.6} &} \step{8\phantom{.8} &} \step{16 &} \step{16 \\}% \step{5 &} \step{2.3 &} \step{11.6 &} \step{25 &} \step{32 }% \end{array} \end{displaymath} } \end{slide} \begin{slide} \begin{center} \textbf{A picture} \end{center} \pause \begin{center}% \stepwise {% \setlength{\unitlength}{1.6cm}% \delimitershortfall-1sp% Just for the nested braces \begin{picture}(14,2) \put(0,1){\vector(1,0){1}} \put(0.5,0.5){\makebox(0,0){\small $x(t)$}} \put(13,1){\vector(1,0){1}} \put(13.5,0.5){\makebox(0,0){\small $y(t)$}} \step { \put(1,1){\line(3,2){1.5}} \put(1,1){\line(3,-2){1.5}} \put(2.5,0){\line(0,1){2}} \put(2,1){\makebox(0,0){\large $\varphi$}} } \step { \put(2.5,1){\vector(1,0){3.5}} \put(4.25,0.5){\makebox(0,0){\small $F_t = \varphi\left(x(t)\right)$}} } \step { \put(6,0){\framebox(2,2){\large $\Phi$}} } \step { \put(8,1){\vector(1,0){3.5}} % % Here, we find another nested use of \step inside \step. % \bstep is a variant of \step which _always_ puts its argument into a box for leaving the correct amount of % white space. We cannot use \parstepwise here because \put can't go into a box. Hence, just using \step for % building the nested formula on the next line would give the wrong size for the nested braces. % \put(9.75,0.5){\makebox(0,0){\small $G_t = \Phi\left(\bstep{\varphi\left(\bstep{x(t)}\right)}\right)$}} } \step { \put(13,1){\line(-3,2){1.5}} \put(13,1){\line(-3,-2){1.5}} \put(11.5,0){\line(0,1){2}} \put(12,1){\makebox(0,0){\large $\delta$}} } \end{picture}% }% \end{center}% \end{slide} \end{document} \endinput %% %% End of file `slidesdemo.tex'.