horiz-adv-x property is missing from all-vertical glyphs (i,I,|) in SVG Font

[golanlevin]

Hello,

Thanks for your lovely work on the Relief single-line font. I have been developing a project to load/display single-line SVG fonts in p5.js, a popular toolkit for creative coding: https://editor.p5js.org/golan/sketches/T-Vf4vvaR

While developing this I noticed that the glyphs i, I, and | had no horiz-adv-x property in the SVG Font file, ReliefSingleLine-Regular.svg. As a result, typesetting with these characters was broken.

You can see this here:

• Relief-SingleLine/fonts/open_svg/ReliefSingleLine-Regular.svg

  Line 115 in 218c4d5

  <glyph glyph-name="I" unicode="I"

• Relief-SingleLine/fonts/open_svg/ReliefSingleLine-Regular.svg

  Line 547 in 218c4d5

  <glyph glyph-name="i" unicode="i"

• Relief-SingleLine/fonts/open_svg/ReliefSingleLine-Regular.svg

  Line 326 in 218c4d5

  <glyph glyph-name="bar" unicode="|"

Related characters (Iacute, Ibreve, Icircumflex, etc.) also have this problem.
I added horiz-adv-x="340" to those glyph definitions in my local copy, and that fixed the problem.

Best wishes,
Golan

[golanlevin]

Hi François, Thank you so much for your kind reply. Congrats again on Relief, it's a gorgeous face. My slightly corrected copy of the Relief SVG 1.1 font is here: https://github.com/golanlevin/p5-single-line-font-resources/blob/main/p5_single_line_svg_fonts/single_line_svg_fonts/Relief/ReliefSingleLine-Regular.svg However, I should say that I only did a little hand-correction on a few characters (i, I, |, !). I noticed that some of the accented i/I characters (Iacute, Ibreve, Icircumflex) might also have problems, but I didn't address them. I do appreciate that the SVG 1.1 Font specification is deprecated (it's not included in SVG 2, for example, and most browsers do not support it). However, I think it still has genuine utility for "niche" applications like pen-plotting, CNC engraving, and creative coding. You would be the expert here, but — to the best of my knowledge — both the OTF and WOFF formats are designed for closed-outline glyphs! For now, I'm loving the SVG 1.1 Font spec :) Regards, Golan

…

On Mon, Jan 6, 2025 at 4:02 AM institut supérieur des arts et du design de Toulouse ***@***.***> wrote: Hi Golan, Happy new year, Thanks for using Relief Single-Line, and thanks for spotting these problems with the vertical bars right and left side bearings in the SVG export. We know that we have some problems with the vertical bars (in earlier phases of the design the i, I, alternate l and vertical bar have a small serif to the left at the top of the stems in order to always have an horizontal value; you can still see it in the background layer of our UFO sources if you open it in a font editor software), we were able to fix it in the OTF-SVG format but apparently not in the old SVG export. Must admit that we have almost no feedback about the old (and almost deprecated) SVG format, thanks for using it in P5! If you feel like sharing it, I can use your fixed Relief SingleLine version on our GitHub account as an urgent patch, we will dig later on our side to update sources and retro-format exports. Will transmit your remarks to the person that did the SVG / TTF cad world exports, I am more responsible for the design and main OTF and OTF-SVG exports. We didn't update this project much these past years (we jumped to other stuff, not necessarily related to type design) but we will try to put some more time on it in the coming weeks, some interest is rising again here and there. I will lecture about the whole process behind Relief SingleLine this February 20th (see https://automatic-type-design.anrt-nancy.fr/colloques/automatic-type-design-3 ). Will send a parallel email on your personal email address from my main address (not the teaching email address), more reactive here. Talk soon, François Le dim. 29 déc. 2024 à 05:47, Golan Levin ***@***.***> a écrit : > Hello, > > Thanks for your lovely work on the Relief single-line font. I have been > developing a project to load/display single-line SVG fonts in p5.js, a > popular toolkit for creative coding: > https://editor.p5js.org/golan/sketches/T-Vf4vvaR > > While developing this I noticed that the glyphs i, I, and | had no > horiz-adv-x property in the SVG Font file, ReliefSingleLine-Regular.svg > < https://github.com/isdat-type/Relief-SingleLine/blob/main/fonts/open_svg/ReliefSingleLine-Regular.svg>. > As a result, typesetting with these characters was broken. > > You can see this here: > > - > https://github.com/isdat-type/Relief-SingleLine/blob/218c4d5b8de0d540cb1995ec347b2ce10ac88341/fonts/open_svg/ReliefSingleLine-Regular.svg#L115 > - > https://github.com/isdat-type/Relief-SingleLine/blob/218c4d5b8de0d540cb1995ec347b2ce10ac88341/fonts/open_svg/ReliefSingleLine-Regular.svg#L547 > - > https://github.com/isdat-type/Relief-SingleLine/blob/218c4d5b8de0d540cb1995ec347b2ce10ac88341/fonts/open_svg/ReliefSingleLine-Regular.svg#L326 > > Related characters (Iacute, Ibreve, Icircumflex, etc.) also have this > problem. > I added horiz-adv-x="340" to those glyph definitions in my local copy, > and that fixed the problem. > > Best wishes, > Golan > > — > Reply to this email directly, view it on GitHub > <#6>, or unsubscribe > < https://github.com/notifications/unsubscribe-auth/ATZBU3ELWQXXY25YR4ZDWID2H55GFAVCNFSM6AAAAABUKOBDIOVHI2DSMVQWIX3LMV43ASLTON2WKOZSG43DEMJQGQYTKNY> > . > You are receiving this because you are subscribed to this thread.Message > ID: ***@***.***> > — Reply to this email directly, view it on GitHub <#6 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACG2BOMBMO23ZKCQMROVIT2JJBDLAVCNFSM6AAAAABUKOBDIOVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKNZSGYZDIMBRGM> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[isdat-type]

Hi Golan, we just updated the Relief SingleLine SVG export (and the skeletal source files) with corrected vertical stems and associated spacing in all affected glyphs (lowercase i, upperase I, alternate lowercase l, vertical bar, alternate punctuation signs etc.). It should now run smoothly in your p5.js environment and for other similar applications.

To prepare any documents for your CNC projects, you should give a try to our OpenType-SVG export, a true single-line font working seamlessly in Adobe apps (kerning, OpenType features, stylistic sets, ligatures, Old Style Figures etc.)!

Best Regards,
isdaT-type