Re: [Devel] Kerning problem with capitals

[Robert Clark]

On Fri, 2004-12-10 at 16:23 +0100, Werner LEMBERG wrote:

> > I don't know if you think it's worth bothering with but, at some
> > higher sizes like 20ppem, the "Re" kerning is around -0.9 and is
> > being rounded to 0.  At that size, the glyph shapes are much closer
> > to the scalable outlines and I think the kerning does improve the
> > layout.  How about rounding the kerning to 0 if it lies in the -0.75
> > -> 0.75 pixel range?
> 
> [No patch attached, BTW.]

  My bad. It was pretty trivial, anyway.

> I've thought about this too: The smaller the ppem, the `stricter' the
> rounding must be. For 10ppem even your proposed [-0.75,0.75] range
> might easily introduce bad kerning,

  It does - "Fi" is quite cramped.

> so I'm staying on the extremely conservative side.  What I can imagine
> is to make the rounding dependent on the ppem value -- can you do some
> testing?

  I think this is going to get to the point where I want to redo the
kerning by hand for every font for each ppem, but I can't resist playing
with it. I'll see what I can come up with over the weekend.

        Robert