<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>Am 11.06.2011 um 08:18 schrieb Dirk Laurie:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>I'd like to make an incremental version of a drawing, i.e.<br>when displayed it starts of with just a line and gradually<br>adds more lines, points, color fill-ins etc, which one can<br>then display as an animation.<br><br>I've thought of this approach:<br><br>1. Make a Metapost drawing of each stage, with the visible parts<br> in black and the not-yet visible parts white. This is the<br> same drawing each time with only the colors varying so that<br> there is no problem about superimposing frames of different size.<br>2. Import the Postscript files into GIMP and get it to make them<br> into an animated GIF.<br><br>Questions:<br><br>1. If you straight off know amuch better way, please tell me.<br>2. For stage 1, is there a way in which I can implement the<br> following algorithm in Metapost?<br><br> a. Draw everything in white<br> b. for k=1 to n, draw k-th stage in black and export current<br> version of the drawing as postscript.<br></div></blockquote></div><br><div>LaTeX and ConTeXt provide mechanism to generate animations in</div><div>PDF files but you need the Adobe Reader to view them.</div><div><br></div><div>For LaTeX the animate [1] package is necessary while ConTeXt</div><div>doesn’t need extra packages, there is a example in the MetaFun</div><div>manual [2] on page 296 ff.</div><div><br></div><div>[1] <a href="http://www.ctan.org/tex-archive/macros/latex/contrib/animate/">http://www.ctan.org/tex-archive/macros/latex/contrib/animate/</a></div><div>[2] <a href="http://pragma-ade.com/show-man-7.htm">http://pragma-ade.com/show-man-7.htm</a></div><div><br></div><div>Wolfgang</div><div><br></div></body></html>