From: Hans Hagen <pragma@wxs.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Clipping bug in MetaPost with MkIV
Date: Thu, 30 Oct 2008 09:47:29 +0100 [thread overview]
Message-ID: <490974A1.2040506@wxs.nl> (raw)
In-Reply-To: <115224fb0810300106m7d77614ehdeb2272707a827f5@mail.gmail.com>
Wolfgang Schuster wrote:
> Hi,
>
> I make a hole in a MetaPost graphic and add a graphic as background but
> in MkIV I get no hole but the lines I try to remove are still visible.
>
> All files with the two results from MkII (what I want) and MkIV are in
> the attachment.
>
> \starttext
>
> \startMPcode
>
> picture temp ;
> path mask ;
>
> draw (0,1cm)--(2cm,1cm) ;
> draw (1cm,0)--(1cm,2cm) ;
>
> temp := currentpicture ;
> currentpicture := nullpicture ;
> mask := unitsquare scaled 2cm -- reverse fullsquare scaled 1cm shifted
> (1cm,1cm) -- cycle ;
> clip temp to mask ;
> currentpicture := temp ;
> draw fullsquare scaled 5mm shifted (1cm,1cm) ;
>
> temp := currentpicture ;
> currentpicture := nullpicture ;
> externalfigure "holz280.jpg" scaled 2cm ;
> addto currentpicture also temp ;
>
> \stopMPcode
>
> \stoptext
i have no clue (nor time to look into it in detail) but this seems to
work ok:
% engine=luatex interface=en
\starttext
\startMPpage
externalfigure "cow.pdf" scaled 2cm ;
clip currentpicture to boundingbox currentpicture -- reverse
unitsquare scaled 1cm shifted (.5cm,.5cm) -- cycle ;
\stopMPpage
\stoptext
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next prev parent reply other threads:[~2008-10-30 8:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-30 8:06 Wolfgang Schuster
2008-10-30 8:47 ` Hans Hagen [this message]
2008-10-30 9:53 ` luigi scarso
2008-10-30 13:36 ` luigi scarso
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