Re: GSOC - Distance Fields

[Alexei Podtelezhnikov]

I'll just add references below.

On Tue, May 12, 2020 at 4:15 PM Werner LEMBERG <address@hidden> wrote:
> > I can't decide which format to use for storing the SDF(signed
> > distance fields).  I think using floating-point values (fixed-point
> > in this case) for generation will be more accurate than using
> > integer, but then saving the SDF to a file will require a
> > conversion.

The basic types are described here:
https://www.freetype.org/freetype2/docs/reference/ft2-basic_types.html
The computations are described here:
https://www.freetype.org/freetype2/docs/reference/ft2-computations.html
Saving files is not of FreeType's business. We just return data.

> The basic question is whether the accuracy is really needed.
> Currently, FreeType doesn't use floating-point arithmetics.
> Personally, I would favour a solution without floats, but maybe there
> are good reasons for using them.