From: Hans Hagen <pragma@wxs.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Mari Voipio <mari.voipio@iki.fi>
Subject: Re: Getting changing/random graphics?
Date: Thu, 16 Feb 2012 10:50:21 +0100 [thread overview]
Message-ID: <4F3CD15D.6050903@wxs.nl> (raw)
In-Reply-To: <CAGbDsP1KpAJc5h3fJsXt=REX6pb92cfg__J5N6tBRRY6me84Ug@mail.gmail.com>
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On 16-2-2012 07:43, Mari Voipio wrote:
> I'm trying to do something that should be possible and I think
> "variables" is the answer, I just can't figure out how.
attached .. (will be in test suite)
Hans
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[-- Attachment #2: random-001.tex --]
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% For Mari Voipio
\startluacode
local files = { }
function document.collectgraphics(pattern)
files = table.merged(files,dir.glob(pattern))
files = table.unique(files)
table.sort(files)
logs.report(string.format("graphics: %s",table.concat(files," ")))
end
function document.choosegraphic()
if #files > 0 then
context(table.remove(files, math.random(1,#files)) or "dummy")
else
context("dummy")
end
end
\stopluacode
\def\CollectGraphics[#1]{\ctxlua{document.collectgraphics("#1")}}
\def\ChooseGraphic {\ctxlua{document.choosegraphic()}}
\CollectGraphics[*.png]
\CollectGraphics[*.jpg]
\starttext
\dorecurse {10} {
\expanded{\externalfigure[\ChooseGraphic][width=4cm]}
}
\stoptext
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next prev parent reply other threads:[~2012-02-16 9:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-16 6:43 Mari Voipio
2012-02-16 9:48 ` Hans Hagen
2012-02-16 9:50 ` Hans Hagen [this message]
2012-02-22 8:22 ` Mari Voipio
2012-02-16 9:53 ` Marco
2012-02-22 7:32 ` Mari Voipio
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