>>it seems most of my calculations for freetype are based on ceil() so
>>yes... if any fraction round up...
>
> ...but this can lead to empty rows/columns.
Well, yes. It's the job of the rendering algorithm to find out the
coverage of a pixel at the outline border. So it indeed might happen
that a coordinate of an extremum slightly exceeds an integer value,
and the associated pixel coverage is still zero.
> Is there really no way to find out the exact pixel size of an
> outline *without* actually drawing it?
Right now, there isn't. However, the computation of the pixel
coverage for a given resolution only at the extrema should be
possible; this would be a variant of `FT_Outline_Get_BBox',
e.g. `FT_Outline_Get_Smooth_BBox'.
Alexei?
Werner
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