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Re: [Texmacs-dev] Bad size with image printing
From: |
Joris van der Hoeven |
Subject: |
Re: [Texmacs-dev] Bad size with image printing |
Date: |
Wed, 26 Feb 2014 20:01:13 +0100 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
Hi,
Yes, the scaling factor we are using at present may not be what you want.
I am interested to hear any specific suggestions on what the default size
of an included picture should be on paper.
Best wishes, --Joris
On Thu, Jan 30, 2014 at 05:38:24PM +0100, François Poulain wrote:
> Hi,
>
> Working on converters, I had some ugly behavior with image rendering.
>
> It appears that, inserting an image into TeXmacs leads, by default to a
> bad typesetting because the image is stretched by a factor approx 5/3.
>
> To reproduce it, copy paste :
>
> <image|http://upload.wikimedia.org/wikipedia/meta/6/6d/Wikipedia_wordmark_1x.png||||>
>
> In typeset_image () in src/Typeset/Concat/concat_active.cpp, I don't
> understand the line 318 :
> double pt= ((double) env->dpi*PIXEL) / 72.0;
>
> i) env->dpi is related to font's DPI and I don't know why should it
> imply image resizing.
> ii) I wonder if magnification should not play a role here.
> iii) I suppose that PIXEL is the ratio tmpt / px.
> iv) If we should translate the size from pixels to tmpt, I wonder why
> the calculus "pt= PIXEL * zoom_factor", following the
> documentation (length.en.tm), is wrong (at least, it gives a
> result very different than the current result).
> v) By the way, current calculus on my computer gives pt= 2133.33,
> (with default DPI= 600 and PIXEL= 256) whereas the "wanted size"
> of the picture is obtained with a pt approx 1280.
>
> Any suggest about this ?
> François
>
> --
> François Poulain <address@hidden>
>
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> Texmacs-dev mailing list
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