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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