How to use calt or rclt feature in fontcreator 11.5?

Get help with FontCreator here. Please do not post feature requests or bug reports here.
Post Reply
ikhlas
Posts: 2
Joined: Tue Apr 30, 2019 6:51 am

How to use calt or rclt feature in fontcreator 11.5?

Post by ikhlas »

Hi guys.

i am new for font and make own Arabic font as test base to learning font-creator.
in may Arabic font each glyph contain more one than glyphs. such as Baa Initial shape are many shapes are but i don't know to connect them other fina or medial glyphs?
how to attach alternate shapes of baa initial to other fina or medial.
after study documentation About font features i want to use calt feature but i am not understand how to use it. how to replace basic glyph with other specific glyph in different attachment? Can any person guide me to right way?
Attachments
rclt features_02.PNG
rclt features_02.PNG (50.6 KiB) Viewed 3109 times
rclt features.PNG
rclt features.PNG (66.79 KiB) Viewed 3109 times
Baa Initial.PNG
Baa Initial.PNG (9.2 KiB) Viewed 3109 times
Erwin Denissen
Moderator
Moderator
Posts: 11108
Joined: Fri Oct 04, 2002 12:41 am
Location: Bilthoven, The Netherlands
Contact:

Re: How to use calt or rclt feature in fontcreator 11.5?

Post by Erwin Denissen »

I have limited Internet access right now, but I think Cursive Attachment would do the trick.
Erwin Denissen
High-Logic
Proven Font Technology
Bhikkhu Pesala
Top Typographer
Top Typographer
Posts: 9873
Joined: Tue Oct 29, 2002 5:28 am
Location: Seven Kings, London UK
Contact:

Re: How to use calt or rclt feature in fontcreator 11.5?

Post by Bhikkhu Pesala »

Moved to the support forum.
My FontsReviews: MainTypeFont CreatorHelpFC15 + MT12.0 @ Win 10 64-bit build 19045.2486
Erwin Denissen
Moderator
Moderator
Posts: 11108
Joined: Fri Oct 04, 2002 12:41 am
Location: Bilthoven, The Netherlands
Contact:

Re: How to use calt or rclt feature in fontcreator 11.5?

Post by Erwin Denissen »

I've read your post again, and I'm not sure if curs is the way to go:
Cursive Positioning (curs) cursively positions adjacent glyphs by using entry and exit anchor points.

A chaining context allows you to replace a character if it is preceded or followed by specific characters.

A shaping engine will process calt after processing isol, init, medi, and fina, so keep that in mind.
If you want to substitute the default initial form of kaf-arab or keheh-arab if it is followed by either a medial or final form of beh-arab or seen-arab then this should do the trick:
InitKafAlt.png
InitKafAlt.png (14.23 KiB) Viewed 3091 times

InitKafAlt_ref.png
InitKafAlt_ref.png (33.75 KiB) Viewed 3091 times

And these glyph classes:

Code: Select all

class @glyphsinput ["kaf-arab.init" "keheh-arab.init"];
class @glyphslookahead ["beh-arab.fina" "beh-arab.medi" "seen-arab.fina" "seen-arab.medi"];
I'm still not sure if this is what you're looking for, so can you please be more specific, with some easy to understand examples of what you want to achieve?
Erwin Denissen
High-Logic
Proven Font Technology
ikhlas
Posts: 2
Joined: Tue Apr 30, 2019 6:51 am

Re: How to use calt or rclt feature in fontcreator 11.5?

Post by ikhlas »

I still do not understand brother. I send you a screen shot in substitution table which table select it.

2nd where you got 2nd screen shot? I saw the 2nd screen shot which you send first time when I add OpenType feature but now I forgot. Please help me...

3rd can I use access all alternate feature in my Arabic font to access all alternate glyphs?
Attachments
Capture_03.PNG
Capture_03.PNG (42.22 KiB) Viewed 3015 times
Capture_02.PNG
Capture_02.PNG (34.33 KiB) Viewed 3015 times
Capture_01.PNG
Capture_01.PNG (83.21 KiB) Viewed 3015 times
Post Reply