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Re: [ft-devel] CFF: No hinting without vertical/horizontal hints?

From: Nikolaus Waxweiler
Subject: Re: [ft-devel] CFF: No hinting without vertical/horizontal hints?
Date: Mon, 5 Jun 2017 22:39:06 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.0

> I suppose this reduced form of hinting may be better than completely
> unhinted rendering. You'd be giving up hinting stems that are not in
> alignment zones, like the middle stem of 'E'. Also, you'd need some way
> to identify and locate the stems in an outline. In FreeType, there is a
> run-time auto-hinter that could do this. In normal CFF fonts, there is
> an auto-hinter that runs at font production time and records its output
> as a series of hstem and vstem declarations in the charstring. The
> production auto-hinter also recognizes and handles conflicting hints by
> partitioning complex glyphs into multiple hint zones, using the hintmask
> operator.

Thanks for the explanation :) So it may be better to check a CFF font
for hints and if none are found, invoke the autohinter. On my to do list :)

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