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Re: [ft] lsb/rsb_delta and vertical text (again)
From: |
Brady Duga |
Subject: |
Re: [ft] lsb/rsb_delta and vertical text (again) |
Date: |
Thu, 10 May 2007 13:38:25 -0700 |
On May 9, 2007, at 9:42 PM, Werner LEMBERG wrote:
This can easily be decided by using a higher resolution; then you'll
clearly see whether there is some overlapping or not.
I'm pretty sure it doesn't overlap in the unhinted case, but does in
the hinted case. The text is copied in 'or' mode, so the following
character wouldn't set any part of the previous one to white. You
would just get overlapping text. I will play some more with potential
tsb/bsb_delta, and look at supplying a patch for that.
Interesting. You might analyze it with the ttx disassembler (from
fonttools.sf.net) and/or checking it with FontForge.
I have looked at it in FontForge and it looks like the vertical
advances are not properly set (they look like values I would expect
for a normal, full-height font). The owner of the font has said they
think there are problems with its metrics. Apparently, it is used
with some custom DTP app which just does the right thing (not sure
how it knows what the right thing is, but I suspect hackery).
--Brady