optical bounds with hanging diacritics
Hans, I added lfbd values for GFS Didot (attached) to get hanging diacritics in Greek. The attached PDF document is the optput from the following code: \showframe \setuplayout[topspace=1cm, height=middle, footer=0cm, header=0cm] \definefontfeature[default][default] [protrusion=quality, opbd=yes, script=grek] \definefontfamily[mainface][rm][GFS Didot] \setupbodyfont[mainface, 325pt] \setupalign[hanging] \starttext Α\\Ἀ\\Α\\Ἁ\\Α\\Ἂ\\Α\\Ἃ\\Α\\Ἄ\\Α\\Ἅ\\Α\\Ἆ\\Α\\Ἇ Ἐ\\Ε\\Ἑ\\Ε\\Ἒ\\Ε\\Ἓ\\Ε\\Ἔ\\Ε\\Ἕ\\Ε Ἠ\\Η\\Ἡ\\Η\\Ἢ\\Η\\Ἣ\\Η\\Ἤ\\Η\\Ἥ\\Η\\Ἦ\\Η\\Ἧ\\Η Ἰ\\Ι\\Ἱ\\Ι\\Ἲ\\Ι\\Ἳ\\Ι\\Ἴ\\Ι\\Ἵ\\Ι\\Ἶ\\Ι\\Ἷ\\Ι Ὀ\\Ο\\Ὁ\\Ο\\Ὂ\\Ο\\Ὃ\\Ο\\Ὄ\\Ο\\Ὅ\\Ο Ρ\\Ῥ Ὑ\\Υ\\Ὓ\\Υ\\Ὕ\\Υ\\Ὗ\\Υ Ὠ\\Ω\\Ὡ\\Ω\\Ὢ\\Ω\\Ὣ\\Ω\\Ὤ\\Ω\\Ὥ\\Ω\\Ὦ\\Ω\\Ὧ\\Ω \stoptext BTW, to get pure lfbd values, I had to replace line 361 from font-imp-quality lua with: local p = d/1000 Raw lfbd and rtbd values from the font could be set with protrusion=opentype (or a similar option). I hope it is clear now why raw values from the font are needed. Many thanks for your help, Pablo -- http://www.ousia.tk
On Sun, Nov 25, 2018 at 7:24 PM Pablo Rodriguez
Hans,
I added lfbd values for GFS Didot (attached) to get hanging diacritics in Greek.
The attached PDF document is the optput from the following code:
the pdf is too big .. I have unlocked it for this time... -- luigi
On 11/25/18 7:26 PM, luigi scarso wrote:
On Sun, Nov 25, 2018 at 7:24 PM Pablo Rodriguez wrote:
Hans,
I added lfbd values for GFS Didot (attached) to get hanging diacritics in Greek.
The attached PDF document is the optput from the following code:
the pdf is too big .. I have unlocked it for this time...
Sorry, Luigi, I forgot that we had a maximum size for the message (attachments included). The PDF document isn’t that big (30KB). The font with the OT lfbd values is a bigger file (177KB). Pablo -- http://www.ousia.tk
On 11/24/2018 10:02 PM, Pablo Rodriguez wrote:
Hans,
I added lfbd values for GFS Didot (attached) to get hanging diacritics in Greek.
The attached PDF document is the optput from the following code:
\showframe \setuplayout[topspace=1cm, height=middle, footer=0cm, header=0cm] \definefontfeature[default][default] [protrusion=quality, opbd=yes, script=grek] \definefontfamily[mainface][rm][GFS Didot] \setupbodyfont[mainface, 325pt] \setupalign[hanging] \starttext Α\\Ἀ\\Α\\Ἁ\\Α\\Ἂ\\Α\\Ἃ\\Α\\Ἄ\\Α\\Ἅ\\Α\\Ἆ\\Α\\Ἇ
Ἐ\\Ε\\Ἑ\\Ε\\Ἒ\\Ε\\Ἓ\\Ε\\Ἔ\\Ε\\Ἕ\\Ε
Ἠ\\Η\\Ἡ\\Η\\Ἢ\\Η\\Ἣ\\Η\\Ἤ\\Η\\Ἥ\\Η\\Ἦ\\Η\\Ἧ\\Η
Ἰ\\Ι\\Ἱ\\Ι\\Ἲ\\Ι\\Ἳ\\Ι\\Ἴ\\Ι\\Ἵ\\Ι\\Ἶ\\Ι\\Ἷ\\Ι
Ὀ\\Ο\\Ὁ\\Ο\\Ὂ\\Ο\\Ὃ\\Ο\\Ὄ\\Ο\\Ὅ\\Ο
Ρ\\Ῥ
Ὑ\\Υ\\Ὓ\\Υ\\Ὕ\\Υ\\Ὗ\\Υ
Ὠ\\Ω\\Ὡ\\Ω\\Ὢ\\Ω\\Ὣ\\Ω\\Ὤ\\Ω\\Ὥ\\Ω\\Ὦ\\Ω\\Ὧ\\Ω \stoptext
BTW, to get pure lfbd values, I had to replace line 361 from font-imp-quality lua with:
local p = d/1000
two issues: - no 1000 but units - we need to be able to go less extreme, so we keep factor so something local p = lfactor * d/units
Raw lfbd and rtbd values from the font could be set with protrusion=opentype (or a similar option).
I hope it is clear now why raw values from the font are needed.
fwiw it looks a bit too excessive to me (i'm not sure if graphical elements like those accents which are part of the character needs that much protrusion)
Many thanks for your help,
Pablo
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On 11/27/18 12:33 AM, Hans Hagen wrote:
On 11/24/2018 10:02 PM, Pablo Rodriguez wrote:
[...] BTW, to get pure lfbd values, I had to replace line 361 from font-imp-quality lua with:
local p = d/1000
two issues:
- no 1000 but units - we need to be able to go less extreme, so we keep factor
so something
local p = lfactor * d/units
Many thanks for your reply, Hans. The new definition is fine for me. BTW, I have an issue issue with the font feature. I cannot have both default and the opbd as font features, such as in: \setuplayout[topspace=1cm, height=middle, footer=0cm, header=0cm] \definefontfeature[newfeature] [protrusion=opentype, opbd=yes, script=grek] \definefontfamily[mainface][rm] [GFS Didot][features={default, newfeature}] \setupbodyfont[mainface, 325pt] \setupalign[hanging] \starttext Α\\Ἇ \stoptext I guess this may be related to "script=grek", but I don’t know whehter I’m doing something wrong.
I hope it is clear now why raw values from the font are needed.
fwiw it looks a bit too excessive to me (i'm not sure if graphical elements like those accents which are part of the character needs that much protrusion)
I agree. These are excessive values, but this is rather a very particular case. Hanging diacritics are used only in poetry, not in prose: https://www.researchgate.net/publication/2417759_From_Unicode_to_Typography_... (section “1.6.2 Hanging Diacritics” on page 21). Many thanks for your help, Pablo -- http://www.ousia.tk
participants (3)
-
Hans Hagen -
luigi scarso -
Pablo Rodriguez