[NTG-context] Re: outlinetext, fractions, and square roots

20 Feb 2025

      Hi Hans,

Thanks a lot for that! I confirm that these methods, along with the change
in mlib-fnt.lmt you suggested, work perfectly.

Cheers,
Florent

Le jeu. 20 févr. 2025 à 08:42, Hans Hagen  a écrit :
...
On 2/19/2025 10:23 PM, Florent Michel wrote:
...
Hi,
When experimenting with outlinetext, I found it generally works well for
both text and equations but seems to fail for fractions or square roots.
The code below demonstrates the issue:
____________________________
\startMPpage
draw outlinetext("$\frac{1}{\sqrt{2}}$");
\stopMPpage
____________________________
The ‘1’ and ‘2’ seem to be at the right positions, but the fraction bar
and horizontal part of the radical are missing.
Is there a different fonction I should use for getting the outlines of
equations?
In order to get rules you need this:
\setupmathfractions[rule=yes]
\setupmathradical  [rule=yes]
I suppose this is something we can hook in automatically so we need to
discuss that in the cms.
You can also do this:
\disabledirectives [math.extensibles]
In both cases there is a too large radical symbol so this fix is needed
in mlib-fnt.lmt (line 399):
local s  = 1000
             local sx = 1000
             local sy = 1000
After that it should be ok. I need to check the directive but might as
well just leave that as 'not worth the trouble' because going into an
assembled glyph is no fun.
\starttext
\startMPpage
     draw lmt_outline [
         text = "$\frac{1}{\sqrt{2}}$"
     ] ;
\stopMPpage
\startTEXpage
     $\frac{1}{\sqrt{2}}$
\stopTEXpage
\stoptext
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                                           Hans Hagen | PRAGMA ADE
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