From: Alan Braslau via ntg-context <ntg-context@ntg.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>,
Henning Hraban Ramm <texml@fiee.net>
Cc: Alan Braslau <alan.braslau@icloud.com>
Subject: [NTG-context] Re: access image properties in Lua
Date: Mon, 17 Jul 2023 19:10:10 +0200 [thread overview]
Message-ID: <bcaa3413-f1b3-be08-56da-20c79072cc73@icloud.com> (raw)
In-Reply-To: <8aeba37a-d6cd-eb39-6814-5756ef6ebc0c@fiee.net>
On 17/07/23 17/07/23, 18:20, Henning Hraban Ramm wrote:
>> Bonus question: how also to handle the case of
>> \startMPcode
>> draw figure "MyFigure" xsized TextWidth ;
>> ...
>> \stopMPcode
>
> Is MyFigure a pixel image?
> You could use \externalfigure within MP code.
The MP operator figure calls \externalfigure.
However, the resolution downsampler hooked into externalfigure as you
suggest would not give the desired resolutions once resized in MP.
A solution might be to use
draw rawtextext("\externalfigure[MyFigure][width=\textwidth") ;
which is OK for this simplified example but would not work when more
sophisticated MetaPost transformations might be needed.
Along the lines of the conversion downsampler, a resolution reporter and
manual resampling could be more efficient than reconverting the bitmap
image at every run, of which there can be many.
--
Alan
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next prev parent reply other threads:[~2023-07-17 17:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-11 12:22 Henning Hraban Ramm
2023-07-13 7:19 ` Hans Hagen
2023-07-17 13:44 ` [NTG-context] " Alan Braslau via ntg-context
2023-07-17 16:20 ` Henning Hraban Ramm
2023-07-17 17:10 ` Alan Braslau via ntg-context [this message]
[not found] ` <048d051e-c66f-3e0f-e3d2-48ef300b7280@icloud.com>
2023-07-18 11:39 ` Henning Hraban Ramm
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