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Re: [ft-devel] Improved Arabic auto-hinting
From: |
Khaled Hosny |
Subject: |
Re: [ft-devel] Improved Arabic auto-hinting |
Date: |
Fri, 7 Aug 2015 17:51:28 +0200 |
User-agent: |
Mutt/1.5.23+102 (2ca89bed6448) (2014-03-12) |
On Fri, Aug 07, 2015 at 05:24:17PM +0200, Werner LEMBERG wrote:
>
> >> I've verified that the vertical position for the joining glyphs are
> >> the same in his font...
> >>
> >>> I can't reproduce any improvements so far.
> >>> This effect:
> >>>
> >>> https://www.flickr.com/photos/behdad/34769511/
> >>>
> >>> still happens in my limited testing.
> >>
> >> ... and apparently this doesn't work as universally as I've hoped.
> >> Please send me the font privately and tell me how to reproduce this
> >> image.
> >
> > With this font:
> >
> > https://github.com/googlei18n/noto-fonts/blob/master/unhinted/NotoNaskhArabic-Regular.ttf
> >
> > and this command-line:
> >
> > $ hb-view ./NotoNaskhArabic-Regular.ttf نستعلیق \
> > --font-size 400 --background 000 --foreground ffffff \
> > | display
>
> Thanks. IMHO, this is not a bug in the autohinter; it's a font bug:
> The overlapping of glyphs isn't constructed correctly, which makes
> repeated drawing of the overlapping parts problematic, as described in
> your blog entry.
>
> For comparison, here an image using a font by Titus with the same
> hb-view command. Another image shows how the joining parts are
> designed to avoid (or to reduce the effects of) exactly this problem.
Per (old?) Microsoft recommendation [1], both approaches are incorrect.
Regards,
Khaled
1. https://www.microsoft.com/typography/cursivescriptguidelines.mspx
- [ft-devel] Improved Arabic auto-hinting, Werner LEMBERG, 2015/08/06
- Re: [ft-devel] Improved Arabic auto-hinting, Behdad Esfahbod, 2015/08/06
- Re: [ft-devel] Improved Arabic auto-hinting, Werner LEMBERG, 2015/08/06
- Re: [ft-devel] Improved Arabic auto-hinting, Behdad Esfahbod, 2015/08/07
- Re: [ft-devel] Improved Arabic auto-hinting, Werner LEMBERG, 2015/08/07
- Re: [ft-devel] Improved Arabic auto-hinting, Behdad Esfahbod, 2015/08/07
- Re: [ft-devel] Improved Arabic auto-hinting, Werner LEMBERG, 2015/08/07
- Re: [ft-devel] Improved Arabic auto-hinting,
Khaled Hosny <=
- Re: [ft-devel] Improved Arabic auto-hinting, Werner LEMBERG, 2015/08/07
- Re: [ft-devel] Improved Arabic auto-hinting, Werner LEMBERG, 2015/08/20
- Re: [ft-devel] Improved Arabic auto-hinting, Alexei Podtelezhnikov, 2015/08/20
- Re: [ft-devel] Improved Arabic auto-hinting, Werner LEMBERG, 2015/08/20
- Re: [ft-devel] Improved Arabic auto-hinting, Behdad Esfahbod, 2015/08/21