Re: Interpretation of OpenType MATH fraction shifts from Frédéric Wang on 2019-08-07 (public-mathml4@w3.org from August 2019)

From: Frédéric Wang <fwang@igalia.com>
Date: Wed, 7 Aug 2019 21:52:34 +0200
To: Sergey Malkin <sergeym@microsoft.com>, Murray Sargent <murrays@exchange.microsoft.com>
Cc: "public-mathml4@w3.org" <public-mathml4@w3.org>, Victor Kozyrev <victork@microsoft.com>, Peter Constable <petercon@microsoft.com>
Message-ID: <2bc740c6-d113-f3e1-be9a-fd879be6457c@igalia.com>

On 07/08/2019 21:49, Sergey Malkin wrote:
> Correct.
>
> For fractions, gap is between�nominator/denominator and fraction bar,
> so axis position is part of computations.�For stack, gap is between
> upper and lower parts.�Axis position is not involved.�
>
Thanks for the confirmation!


> On related note, you may notice that axis position is not part of
> computing initial positions for both fractions and stacks. Of course,
> shift-ups and shift-downs (defined by font designer) are such that
> parts are visually centered around math axis, but actual value is not
> used.

Yes, that was my understanding.


-- 
Fr�d�ric Wang

Received on Wednesday, 7 August 2019 19:53:09 UTC