From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/75066 Path: news.gmane.org!not-for-mail From: Peter Rolf Newsgroups: gmane.comp.tex.context Subject: Re: random background picture in metafun Date: Tue, 13 Mar 2012 17:33:16 +0100 Message-ID: <4F5F76CC.1090800@gmx.net> References: <4F5F5DA1.1050202@uni-bonn.de> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Trace: dough.gmane.org 1331656417 31367 80.91.229.3 (13 Mar 2012 16:33:37 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 13 Mar 2012 16:33:37 +0000 (UTC) To: mailing list for ConTeXt users Original-X-From: ntg-context-bounces@ntg.nl Tue Mar 13 17:33:36 2012 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from balder.ntg.nl ([195.12.62.10]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1S7UfH-0001cG-73 for gctc-ntg-context-518@m.gmane.org; Tue, 13 Mar 2012 17:33:35 +0100 Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id A63A9CB2AA; Tue, 13 Mar 2012 17:33:34 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id Tbt+Ka2-qMwu; Tue, 13 Mar 2012 17:33:26 +0100 (CET) Original-Received: from balder.ntg.nl (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 72B81CB291; Tue, 13 Mar 2012 17:33:26 +0100 (CET) Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 79D82CB291 for ; Tue, 13 Mar 2012 17:33:24 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id gmzkwCLnAGxs for ; Tue, 13 Mar 2012 17:33:18 +0100 (CET) Original-Received: from filter2-til.mf.surf.net (filter2-til.mf.surf.net [194.171.167.218]) by balder.ntg.nl (Postfix) with ESMTP id 0D4AECB04D for ; Tue, 13 Mar 2012 17:33:17 +0100 (CET) Original-Received: from mailout-de.gmx.net (mailout-de.gmx.net [213.165.64.22]) by filter2-til.mf.surf.net (8.14.3/8.14.3/Debian-9.4) with SMTP id q2DGXGbK029965 for ; Tue, 13 Mar 2012 17:33:17 +0100 Original-Received: (qmail invoked by alias); 13 Mar 2012 16:33:16 -0000 Original-Received: from ip-178-200-60-76.unitymediagroup.de (EHLO [192.168.178.3]) [178.200.60.76] by mail.gmx.net (mp034) with SMTP; 13 Mar 2012 17:33:16 +0100 X-Authenticated: #24293357 X-Provags-ID: V01U2FsdGVkX19cSvJ5G/Zc4gjDdlM5KuABlzu7rMKIwxQJ87YxqL xN0Xaj4TwLd0P/ User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0.2) Gecko/20120216 Thunderbird/10.0.2 In-Reply-To: <4F5F5DA1.1050202@uni-bonn.de> X-Enigmail-Version: 1.4 X-Y-GMX-Trusted: 0 X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) X-CanIt-Geo: ip=213.165.64.22; country=DE; latitude=51.0000; longitude=9.0000; http://maps.google.com/maps?q=51.0000,9.0000&z=6 X-CanItPRO-Stream: uu:ntg-context@ntg.nl (inherits from uu:default, base:default) X-Canit-Stats-ID: 0TGJ4xhwf - fb7a9090e9ec - 20120313 (trained as not-spam) X-Scanned-By: CanIt (www . roaringpenguin . com) on 194.171.167.218 X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.12 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl Xref: news.gmane.org gmane.comp.tex.context:75066 Archived-At: Am 13.03.2012 15:45, schrieb Thomas A. Schmitz: > Hi all, > > scenario: for a presentation, I want the background to be a random > picture, taken from a directory "backgroundpics." The pictures are > numbered consecutively as 1.jpg through 22.jpg. For some complex > reasons, it would be easier for me to include these pictures via metafun > (I want to add other graphical elements on top). So my question is, how > can I pick a random picture? Given the code > > StartPage ; > draw externalfigure "backgoundpics/1" xscaled PaperWidth yscaled > PaperHeight ; > StopPage ; > > how can I obtain a random number and make metapost pick the > corresponding picture? Sorry, difficult to make a minimal example here... > (slightly tested) string mypath, rndfile; mypath:= "backgroundpics/"; nofpics:= 22; n:= round(uniformdeviate(nofpics-1)+1); rndfile:= mypath & decimal n; HTH, Peter > Thomas > ___________________________________________________________________________________ > > If your question is of interest to others as well, please add an entry > to the Wiki! > > maillist : ntg-context@ntg.nl / > http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://tex.aanhet.net > archive : http://foundry.supelec.fr/projects/contextrev/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ > > ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________