Re: [Devel] Some numbers smaller than some others (TTF, Type1)

[Werner LEMBERG]

> Sorry guys, FTGL is OK, since I could reproduce the problem using something 
> like:
> 
> ftstring -r 17 -m "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz 
> 0123456789 address@hidden&*()-=_+[]{}" ppem 
> D:\temp\fonts\free\candidates\urw\n022003l.pfb
> 
> Here is the result, for the "Nimbus Sans" and "Nimbus Mono".
> http://barre.nom.fr/temp/type1bug.gif
> Note the '1' and '4'
>
> This is scary.
> I mean, I'm quite sure a lot of people use Freetype and Type1/TrueType 
> fonts, so it looks strange that nobody noticed that.
> Any clue ?

Attached is an image from pfaedit -- as you can see, the digits are
indeed smaller by about 4% (709 vs. 729 font units).  Doing

  ftstring -r 17 -m "Z1Z4Z" 69 n019003l.pfb

the difference is one pixel; using 70ppem instead of 69ppem, both
digits and letters have the same height.

The font has bad hinting in the PS version -- I've added ghost hints
to both digit 1 and 4 using pfaedit, and as the two attached xmag
images show, the digits are much better rendered after the correction.

Conclusion: The problem is in the font and not in FreeType.


    Werner