Typophile - RoboFab Kerning - Add Pair ? - Comments

andy Thanks for the reply -

ReginaldV — Wed, 11 Jun 2008 09:06:17 -0700

andy Thanks for the reply - I just worked out how to do.

I did it slightly differently from the way you said to make it easier to read.

#Kerning--------------- # from robofab.world import CurrentFont f = CurrentFont() kerning = f.kerning # OA = kerning[('O','A')] AO = kerning[('A','O')] OV = kerning[('O','V')] VO = kerning[('V','O')] OW = kerning[('O','W')] WO = kerning[('W','O')] OY = kerning[('O','Y')] YO = kerning[('Y','O')] OX = kerning[('O','X')] XO = kerning[('X','O')] OT = kerning[('O','T')] TO = kerning[('T','O')] KO = kerning[('K','O')] # # kerning[('A','C')] = kerning[('A','G')] = kerning[('A','Q')] = kerning[('A','OE')] = AO kerning[('D','A')] = kerning[('Q','A')] = OA # kerning[('V','C')] = kerning[('V','G')] = kerning[('V','Q')] = kerning[('V','OE')] = VO kerning[('D','V')] = kerning[('Q','V')] = OV # kerning[('W','C')] = kerning[('W','G')] = kerning[('W','Q')] = kerning[('W','OE')] = WO kerning[('D','W')] = kerning[('Q','W')] = OW # kerning[('Y','C')] = kerning[('Y','G')] = kerning[('Y','Q')] = kerning[('Y','OE')] = YO kerning[('D','Y')] = kerning[('Q','Y')] = OY # kerning[('X','C')] = kerning[('X','G')] = kerning[('X','Q')] = kerning[('X','OE')] = XO kerning[('D','X')] = kerning[('Q','X')] = OX # kerning[('T','C')] = kerning[('T','G')] = kerning[('T','Q')] = kerning[('T','OE')] = TO kerning[('D','T')] = kerning[('Q','T')] = OT # kerning[('K','C')] = kerning[('K','K')] = kerning[('K','Q')] = kerning[('K','OE')] = KO #√ç # f.update()

Since the kerning object

andyclymer — Wed, 11 Jun 2008 08:51:26 -0700

Since the kerning object works like a standard Python dictionary you don’t have to use get(), you can call a value out like this:

AO = kerning[('A', 'O')]

...or even better, combine that with making a new dictionary entry:

kerning[('A', 'C')] = kerning[('A', 'O')]

If an entry already existed for ('A', 'C') then it would now be replaced, or if there wasn’t an entry yet a new one would have been created. Then, check your work to see if it did what you wanted:

print kerning[('A', 'C')] print kerning[('A', 'O')]

...the two of those should now be the same.

Hope that helps,
Andy

k.l. Thanks for your reply

ReginaldV — Wed, 11 Jun 2008 08:11:07 -0700

k.l.

Thanks for your reply - Yes I’ve been to the Robofab site and got all the documentation. I got the code working to create a new pair but I still need to work out how capture a value that already exists.

In my example here I’m trying to use the kerning value for ’AO’ and create a new pair for ’AC’ with the same value.

The Robofab documentation says that get(aPair) is used to get a value for a pair, I don’t know if my syntax is wrong or this is the wrong way to do it.

#Kerning--------------- # from robofab.world import CurrentFont f = CurrentFont() kerning = f.kerning # AO = kerning.get('A','O')


kerning[('A','C')] = AO

f.update()

Have you checked the RoboFab

k.l. — Wed, 11 Jun 2008 04:26:58 -0700

Have you checked the RoboFab site? The RoboFab documentation at http://www.robofab.com/objects/index.html is pretty good.
As regards kerning, see especially http://www.robofab.com/objects/font.html and http://robofab.com/objects/kerning.html
I haven’t used it for some time now, but in a RoboFab font object, kerning is a dictionary which you access like this

# import the font class: from robofab import CurrentFont # turn the current FLS font into a RoboFab font object: f = CurrentFont() # get at kerning in the current font: kerning = f.kerning

and then you should be able to either directly add kerning to this kerning object/dict like

# note that the key is a tuple: kerning[ ('glyphA','glyphB') ] = 10

or, alternatively, create a new temporary kerning dictionary which you feed with additional kerning pairs, and finally update the font’s kerning dictionary with the new one

newKerning = {} newKerning[ ('glyphA','glyphB') ] = 10 kerning.update(newKerning)

and don’t forget to update the font

f.update()

RoboFab Kerning - Add Pair ?

ReginaldV — Wed, 11 Jun 2008 00:49:36 -0700

Is it possible to add a kerning pair using RoboFab ?

I’m using class kerning but I quickly wanted to add kerning for pairs like AC, DA, AG, AQ, QA once I have kerned OAO

I was thinking something like

’pseudocode’


addpair('A','C') = AO