Re: [Freetype-devel] Re: GSOC - Distance Fields

[Alexei Podtelezhnikov]

> On Jul 16, 2020, at 00:42, Werner LEMBERG <wl@gnu.org> wrote:
> 
> 
>>> I would be less worried about FT_Property_Set if FreeType reserved
>>> the right to remove (ignore) or change properties when it is
>>> reasonable to do so, i.e. properties should not be considered a
>>> part of API.
>> 
>> Does that mean I shouldn't use `FT_Property_Set' ? For some
>> parameters such as `spread' there is no other way to dynamically set
>> it.
> 
> You definitely should use `FT_Property_Set`.  However, as done in
> other modules, we declare (some of) the properties as 'experimental'
> in the documentation so that we can change or remove them if
> necessary.

Yes. For example, the spread probably defines the range of reliable 
interpolations. So this option is solidly user-relevant. The algorithm, on the 
other hand is a developer option to experiment with. A user should not expect 
this option to be perpetually available as new algorithms might be offered and 
the old ones dropped. Perhaps, a development option is a better name.

Alexei