Completion of contextual layout for kern testing

[dberlow]

Hey Chris,
Here we are working on the kerning procees., scaling the values via the xtra difference of master and then refining.
https://github.com/TypeNetwork/tn-kern-propagator

Her we plan to document the final steps required and all the values.
googlefonts/amstelvar/issues/163

We have at https://videoproof.typenetwork.com/contextual the glyph groups, the extended glyph groups and spacing testing working.

We need options in "Contextual" for both "spacing" as it is, and need to add "Kerning" with appropriate left and right glyph strings for each glyph group.

Unlike the spacing tests, kerning needs to cycle through glyph groups in its contextual strings for proper kern testing.

e.g. The basic uppercase kerning stings provided earlier, HHA"?"AHOLA,
needs to show A-Z in the place of "?", and
then HHB"?"BHOLA and etc through each glyph group, nna"?"ann get a-z for "?", then on to nnb"?"bnn.

and, we need to develop inter-group kerning tests like A"?"nnova, which needs to show a-z in the place of "?", and then B"?"nnova, and etc through specific glyph groups, and the "extended".

...again all strings space-separated, where the space width cannot change.

Let me know when we can get together on, or on to this as kerning proceeds a pace, and there is a lot to look at. :)

Thanks.

[davelab6]

basic uppercase kerning stings provided earlier, HHA"?"AHOLA, needs to show A-Z in the place of "?"

Does this look like

HHA"A"AHOLA
HHA"B"AHOLA
HHA"C"AHOLA

Or like

HHAAAHOLA
HHABAHOLA
HHACAHOLA

?

[dberlow]

I’m guessing you mean that the quotes don’t need to be there if “?” is? On Oct 18, 2019, at 5:12 PM, Dave Crossland <notifications@github.com> wrote: HHAAAHOLA HHABAHOLA HHACAHOLA Chris has HOAAAOLA HOABAOLA HOACAOLA, for shortness but that can be okay too.

[ghost]

@dberlow Just to clarify... currently we have three kern settings in the dropdown which are close to what you describe above. Using ? and * to denote the two nested loops of the character set:

• "Kern upper" which is HO?*?OLA
• "Kern mixed" which is ?*nnoy
• "Kern lower" which is no?*?ony

Am I correct that you want those to change to HH?*?HOLA and ?*nnova ?