Re: [ft] Off by one error in freetype (or in programmer?)

[Lawrence D'Oliveiro]

On Fri, 06 Apr 2018 07:15:56 +0200 (CEST), Werner LEMBERG wrote:

>>> In TrueType, for example, all glyphs are shifted by (-1/2,-1/2)
>>> internally to align pixel centers with the grid.  
>> 
>> <http://alvyray.com/Memos/MemosCG.htm#PixelIsNotSquare>  
> 
> Nice, but completely irrelevant.  For the conversion of font outlines
> to pixmaps or graymaps, pixels *are* rectangles, both by definition
> and construction.

That cannot be true. The edges of the rectangles would give rise to
aliasing, aka stair-stepping.

<http://alvyray.com/Memos/MemosCG.htm#DigitalFilteringI>