Re: [ft-devel] Autohinter: stem darkening, first rough prototype

[Nikolaus Waxweiler]

> Yes, the emboldening strengths are exactly how much thicker stems
> ought to become. This is compatible with their definition in
> FT_Bitmap_Embolden.

That's what I figured back then. What tripped me was how "strong" stems 
appeared with the correct version. Stem contrast approximately matches 
the CFF engine, but they look ugly. Frankly, I'm not pleased with the 
results, especially below 10 or 11ppem, where glyphs degenerate into a 
hazy mess: http://postimg.org/image/8lrwf7x5d. A far cry from the beauty 
the CFF engine puts out...

I dialed the y-parameters back to 200, 135, 135, 0 and set the lower 
size limit to 9ppem (= pretend sizes below 9ppem are 9ppem to prevent 
uglyness). That actually made glyphs look okay:
- http://postimg.org/image/ak3o45zzp/
- http://postimg.org/gallery/2jvrjb9f4/f0346f31/ (emboldening and no 
emboldening)

I don't know. What does the CFF engine do that FT_Outline_Embolden 
doesn't? Higher precision?

Or is this good enough?