Re: [ft-devel] [PATCH] CJK Autohinter should not clump stems together when there are too many of them

[Werner LEMBERG]

> Some Chinese characters, such as 量 and 置, have a large number of
> horizontal stems.  At ordinary sizes, the autohinter will often
> clump adjacent stems together; although the result remains readable,
> the unevenness of black and white looks rather ugly.
> 
> afcjk.patch is my patch that attempts to solve this problem.  All
> stems that are pixel-aligned have at least one pixel of space (or
> other stems) in between.  Other stems are not aligned, but only have
> their position interpolated, so they have the un-hinted look which
> is IMHO better.

Thanks for your patch; it looks reasonable.  Toshiya-san, could you
please comment?

Right now I'm in the process of improving the documentation of the
auto-hinter (mainly to get really acquainted with the code), trying to
fix reported issues later on, including the infinality stuff.

> orig.png and new.png compares the rendered result without and with
> this patch, for WenQuanYi MicroHei at 15px with slight autohinting.
> I think new.png looks noticeably better than orig.png, and better
> than no hinting as well.  That font is now quite comfortable to read
> down to about 12px.

If you say so I must believe you :-) My Chinese is too rudimentary to
fluently read large passages of 漢字, so I can't really comment on the
legibility.


    Werner