Re: hinting lost on generating ttf

On Monday 28 August 2006 16:49, Con Kolivas wrote:
> On Monday 28 August 2006 15:50, Con Kolivas wrote:
> > On Monday 28 August 2006 14:03, George Williams wrote:
> > > On Sun, 2006-08-27 at 18:53, Con Kolivas wrote:
> > > > I have a problem that simply loading any ttf font with hinting and
> > > > then choosing "generate fonts->truetype" will always lose the
> > > > hinting, even if I make no modifications.
> > >
> > > I cannot duplicate this. In my test fonts hinting is retained.
> > > (hinting is not really the right there, though fontforge uses it, the
> > > truetype instructions are retained and appear to work).
> > >
> > > How do you determine that hinting has been lost?
> > >
> > > You will probably have to send me a copy of the font you are working
> > > on.
> >
> > The big Japanese fonts are the ones causing me trouble. Specifically the
> > hiragino open type fonts. The MS Mincho and MS Gothic retain a lot but
> > not all the hints it seems.
>
> My mistake. It's only when opening an otf and then generating a ttf without
> changing it that all the hints are lost. To that end, even bitstream vera
> as an otf will lose all its hints on generating a ttf font from it. I can
> tell that by simply loading the newly generated ttf, as every entry is
> highlighted as needing hints. I've attached a bzip2 compressed vera.otf
> (30kb) which has all its hints still intact to make testing easy.

The common feature from my experimenting seems to be a cubic spline and 
generating a ttf file. Once a font is converted to cubic splines or starts 
out with cubic splines, the hints seem to not be written when generating a 
non quadratic spline ttf file.

Thanks,
Con

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