On 5/14/2021 6:33 PM, Adam Reviczky wrote:
Hi Hans,
Yes, sorry about the error :).
Thanks for the explanation, will use lmtx for that, though probably best
just using another font (some mentioned on the list
https://www.mail-archive.com/ntg-context@ntg.nl/msg92800.html
<https://www.mail-archive.com/ntg-context@ntg.nl/msg92800.html> and
https://mailman.ntg.nl/pipermail/ntg-context/2020/098136.html
<https://mailman.ntg.nl/pipermail/ntg-context/2020/098136.html>) or svg
or metapost as I do not need it in colour.
I spend quite a bit of time looking into this (it's already a while ago
when I implemented all this and color stuff in otf is a bit of a mess
and evolving, so in retrospect it's probably better to wait a few years
to see how that works out; the same for variable fonts ... hadr to deal
with when there are not many fonts and fuzzy specs.)
Anyway, the problem is this: these png emoji are using palettes + masks
and that combinaiton gives:
- with gm (gs) : white background
- with mutool : black background
- with luatex : a mess
- with lmtx : what we want
now, testing all this takes a lot of time in mkiv because building the
cache file takes time, so it's one of these moments i wonder if a modern
machine would do better than my old but reliable machine. The outcome is
that in mkiv one can do this:
\enabledirectives[backend.otfpng.method=lmtx] % the real deal, slow
\enabledirectives[backend.otfpng.method=mutool] % black bg
\enabledirectives[backend.otfpng.method=gm] % white bg, default
So, when you have a fast machine or a coffe break, you can use the lmtx
method (can be configures in cont-loc.mkiv).
As manetioned, in lmtx it is done differently so no penalties there.
I thought it would be easier via fonts but backtracking on the idea now
and maybe using something like this instead:
https://thenounproject.com/term/handshake/153516/
<https://thenounproject.com/term/handshake/153516/>.
btw, some emoji fonts have both bw outlines and bitmap color, some use
png (bloated), and microsoft fonts have efficient outline color (nice
mechanism).
Hans
(who never uses emoji)
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Hans Hagen | PRAGMA ADE
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