How to use calt or rclt feature in fontcreator 11.5?

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ikhlas
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Joined: Tue Apr 30, 2019 6:51 am

How to use calt or rclt feature in fontcreator 11.5?

Post by ikhlas » Sat May 11, 2019 9:44 am

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 549 times
rclt features.PNG
rclt features.PNG (66.79 KiB) Viewed 549 times
Baa Initial.PNG
Baa Initial.PNG (9.2 KiB) Viewed 549 times

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

Post by Erwin Denissen » Sat May 11, 2019 10:42 am

I have limited Internet access right now, but I think Cursive Attachment would do the trick.
Erwin Denissen
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Bhikkhu Pesala
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Re: How to use calt or rclt feature in fontcreator 11.5?

Post by Bhikkhu Pesala » Sat May 11, 2019 1:32 pm

Moved to the support forum.
My FontsReviews: MainTypeFont CreatorHelpFC12 Pro + MT9.0 @ Win10 1903 build 18362.418

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

Post by Erwin Denissen » Sat May 11, 2019 3:22 pm

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 531 times

InitKafAlt_ref.png
InitKafAlt_ref.png (33.75 KiB) Viewed 531 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
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Proven Font Technology

ikhlas
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Joined: Tue Apr 30, 2019 6:51 am

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

Post by ikhlas » Sat May 18, 2019 8:34 am

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 455 times
Capture_02.PNG
Capture_02.PNG (34.33 KiB) Viewed 455 times
Capture_01.PNG
Capture_01.PNG (83.21 KiB) Viewed 455 times

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