Re: [ft-devel] ttfautohint: How to install

[vernon adams]

I have now added some simple upper & lowercase waterfall tests to 'ttfautohint 
tests' at http://code.newtypography.co.uk

overshoots, undershoots and heights seem to be snapping accurately across 
glyphs - no irregularities  which usually seem a big issue with autohinters :)

Of note is that at larger sizes (20px - 30px) the rendering breaks up on 
curves. Is it possible that the autohinter is not yet set to instruct those 
larger sizes?

Overall it's looking good to me. There are specific issues at certain sizes, 
e.g uppercase bowls are flattening too abruptly at the cap-height, see 'O' at 
15, 19, 21px, but i'm assuming these things can be tweaked away.

Will run similar tests on The Droids and Bitstream Vera

-vern




On 17 Jun 2011, at 20:15, vernon adams wrote:

> 
> On 17 Jun 2011, at 19:43, Dave Crossland wrote:
> 
>> Hi,
>> 
>> On 17 June 2011 18:12, vernon adams <address@hidden> wrote:
>>> I've carried out some simple tests using ttfautohint with the Ubuntu Font on
>>> Win XP & Win7, Chrome12 & Firefox4.
>>> The screenshots are at http://code.newtypography.co.uk/
>> 
>> Awesome! Thanks Vernon!
> 
> 
> More tests are needed, i'm doing some. They only need to be simple -e.g.  
> 'ADHESIONALGURNFACE' & 'adhesionalgurnface' as waterfalls from 6px-44px, 
> because as yet we don't know 100% if we won't get the classic wobbly 
> overshoots, caps and x-heights at certain sizes.
> 
>> 
>>> Looks good so far, but i shall test more fonts, particularly a serif and a
>>> bold display face. I chose Ubuntu Font as i know it's well documented that
>>> Dalton Maag put a lot of professional hours into it's truetype instructions.
>> 
>> Fascinating. The autohinter produces more compact text horizontally -
>> there are often one more line in the Dalton-Maag hand/standard
>> hinting, and at 12px the autohinter makes the x-height noticably
>> higher. The i dot can be a bit weak compared to D-M, but perhaps they
>> are making it a bit heavy.
> 
> At 10px the autohinted version is easilly superior imho. The DirectWrite 
> renderings in Firefox 4 are prob better too. Some of that will be the 
> inclusion of a version1 gasp table replacing ye olde version 0 that Dalton 
> Maag used but it's also a good sign that the font is ok hinted. 
> 
> The 'stretched' x-height could be a matter of taste, but personally i would 
> like to see the autohinter err on the side of less stretching if possible.  A 
> gui to visibly tweak the pixel snap zones ;)