From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: random background picture in metafun
Date: Tue, 13 Mar 2012 11:58:52 -0400 (EDT) [thread overview]
Message-ID: <alpine.LNX.2.02.1203131157060.17709@qrpragenyvmrq> (raw)
In-Reply-To: <4F5F5DA1.1050202@uni-bonn.de>
> 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...
(Untested)
draw externalfigure ("backgroundpics/" & round(uniformdeviate(22)+1))
Aditya
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next prev parent reply other threads:[~2012-03-13 15:58 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-13 14:45 Thomas A. Schmitz
2012-03-13 15:58 ` Aditya Mahajan [this message]
2012-03-13 16:33 ` Peter Rolf
2012-03-13 16:56 ` Thomas A. Schmitz
2012-03-13 17:09 ` Thomas A. Schmitz
2012-03-13 18:00 ` Aditya Mahajan
2012-03-13 18:24 ` Peter Rolf
2012-03-15 9:18 ` Thomas A. Schmitz
2012-03-15 18:06 ` Hans Hagen
2012-03-15 18:23 ` Thomas A. Schmitz
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