From: "Meer, Hans van der" <H.vanderMeer@uva.nl>
To: NTG ConTeXt <ntg-context@ntg.nl>
Subject: Re: Overlays as background in textbackground
Date: Wed, 18 May 2016 11:55:11 +0000 [thread overview]
Message-ID: <850280A9-1EA1-474F-BA28-5A057F412C3B@uva.nl> (raw)
In-Reply-To: <51E3BF5A.3070804@wxs.nl>
This code from three years back ia a reply to a question of placing an overlay background. Because the cow is very black I am curious if the \externalfigure can have a paramter to change the alpha of the cow, making it more transparent. By the way, it is not out of curiosity only. If possible it would forego the need to make separate pictures of different transparency beforehand.
> On 15 Jul 2013, at 11:22, Hans Hagen <pragma@wxs.nl> wrote:
>
> \definetextbackground [mybackgroundOverlay] [mp=mpos:region:whatever]
>
> \startuseMPgraphic{mpos:region:whatever}
> for i=1 upto nofmultipars :
> draw textext("\externalfigure[cow.pdf]") rotated 10 shifted center multipars[i] ;
> endfor ;
> \stopuseMPgraphic
>
> \starttext
>
> \startmybackgroundOverlay
> \dorecurse{10}{\input knuth \par}
> \stopmybackgroundOverlay
>
> \stoptext
Hans van der Meer
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next prev parent reply other threads:[~2016-05-18 11:55 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-14 18:54 Marco Patzer
2013-07-14 19:36 ` Wolfgang Schuster
2013-07-14 21:58 ` Marco Patzer
2013-07-15 9:22 ` Hans Hagen
2013-07-15 9:57 ` Marco Patzer
2016-05-18 11:55 ` Meer, Hans van der [this message]
2016-05-18 18:24 ` Alan BRASLAU
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