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Re: [ft-devel] loss of precision in FT_Outline_Decompose


From: Werner LEMBERG
Subject: Re: [ft-devel] loss of precision in FT_Outline_Decompose
Date: Tue, 16 Jul 2013 15:35:55 +0200 (CEST)

>> At two places in FT_Outline_Decompose there is a division by 2 that
>> loses one bit of precision.  [...]
>> 
>> I was doing some tests generating outlines of fonts and come upon
>> this because the .eps I generated were slightly different but gave
>> apparently the same image.
>> 
>> Is this loss of precision a problem or will it never be seen in an
>> image?

AFAIK, it is not a problem, given that we work with 1/64th of a pixel.

> Would be nice to fix regardless.

Suggestions?  I think it's not worth the trouble, but maybe there are
special use cases which I'm not aware of.


    Werner



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