bugThe FreeType Project - Bugs: bug #19962, When setting horizontal and...

 
 

bug #19962: When setting horizontal and vertical point sizes independently, unpatented hinting works poorly with some fonts

Submitted by:  Chris Altick <caltick>
Submitted on:  Fri 25 May 2007 01:34:20 PM UTC  
 
Severity: 3 - NormalItem Group: Incorrect behaviour
Status: Wont FixPrivacy: Public
Assigned to: Werner LEMBERG <wl>Open/Closed: Closed
Planned Release: None

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Mon 05 Jul 2010 08:47:13 PM UTC, comment #1:

Sorry for the extremely long delay in answering your report.

Since May 2010, TrueType hinting is no longer patented. Consequently, I won't apply any fixes to FreeType's unpatented hinting stuff. Please test whether the current git (which will soon become version 2.4) works for you.

Werner LEMBERG <wl>
Project AdministratorIn charge of this item.
Fri 25 May 2007 01:34:20 PM UTC, original submission:

When I use Arial on my device with resolution 203 dpi both horiz. and vert. and using point size 20 for vertical and 10 for horizontal the generated bitmap is really poor. It seems combinations of differing horiz. and vert. point sizes cause the problem.

If I use 20x20 or 10x10 the result is nice.

If I turn hinting off with FT_LOAD_NO_HINTING the generated character is in the correct proportions.

If I use the patented hinting it is correct.

Some characters like V,@,X,Z,7 and others have the proportions of 20x20 when 20x10 was requested, see attached .png sample.

I'm using calls that use the Cache system.

Chris Altick <caltick>

 

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Attach File(s):
   
   
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Attached Files
file #12856:  unpathint.PNG added by caltick (82KiB - image/png)

 

Depends on the following items: None found

Items that depend on this one: None found

 

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  • -unavailable- added by wl (Updated the item)
  • -unavailable- added by caltick (Submitted the item)
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    Follow 5 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Mon 05 Jul 2010 08:47:13 PM UTCwlStatusNone=>Wont Fix
      Assigned toNone=>wl
      Open/ClosedOpen=>Closed
    Fri 20 Mar 2009 12:43:51 PM UTCwlSummaryWhen setting horizontal and vertical point sizes independantly, unpatented hinting works poorly with some fonts=>When setting horizontal and vertical point sizes independently, unpatented hinting works poorly with some fonts
    Fri 25 May 2007 01:34:20 PM UTCcaltickAttached File-=>Added unpathint.PNG, #12856

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