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Re: [ft-devel] Two patches for FT


From: Rogier van Dalen
Subject: Re: [ft-devel] Two patches for FT
Date: Fri, 1 Apr 2005 12:39:23 +0200

On Apr 1, 2005 11:37 AM, Werner LEMBERG <address@hidden> wrote:
> 
> > I never tried to implement the _exact_ rounding like Microsoft's
> > rasteriser, but here goes:
> > The off-curve point (17) is at (3.61, 3.25) before the DELTAP
> > instruction and (3.61, 3.63) afterwards.
> > (Just using my TrueTypeViewer program.)
> 
> Thanks.  Before DELTAP the coordinates are the same; after DELTAP
> FontForge shows (3.61, 3.62).
> 
> George, Rogier, is it possible to see the coordinates with greater
> precision?

:-) Don't forget we're talking 16.6 fixed point coordinates: (232 / 64
= ) 3.625 is rounded differently by the two programs. No difference
here.

>   p17 (3.61,3.62)
>   p18 (3.05,3.52)

No difference here either.

> The pixel center in question is (3.5,3.5).

And no difference here either. :-)

Regards,
Rogier




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