Libre Barcode Project (graphicore.github.io)
250 points by luu 14 hours ago
dfox 7 hours ago
Do not do this unless you do not have any other choice. Preferrably use whatever native barcode support of the printer involved, if it does not have that, just generate the barcode as vector image or bitmap with a resolution that is a integer fraction of the printers resolution. Generating correct Code128 as a SVG is about the same amount of work as generating the correct input for some sort of barcode font (the hard part is determining the switches between character sets, not generating bars from bytes).
alex_suzuki 7 hours ago
Shameless plug for my web-based Zint frontend: https://barcode.new (in-browser WASM)
I wrote it specifically because most online barcode generators don’t support vector output or suck in some other way: ads, signup necessary, code payload exposed to server-side processing etc.
pwdisswordfishs 5 hours ago
Aside from obfuscating the source code to sell licenses, how does this benefit from WASM?
Barcodes have been generated for decades on low-resource embedded devices. Even what would have been a modest-to-low-end machine 25 years ago would have no problem handling the compute needed for this job.
On this end, it just looks like the user has to deal with the penalty of dealing with 1 MB of resources when hitting the main page.
alex_suzuki 4 hours ago
mark-r 5 hours ago
I once worked at a company that used a Code39 font cartridge in HP Laserjets. When HP stopped putting font cartridge slots in their printers, I had the task of intercepting print jobs and detecting the font selection sequence, then taking the text and converting it to a Code128 bitmap graphic. It wasn't hard at all, kind of fun actually.
1bpp 13 hours ago
Is anyone willing to sacrifice their sanity for the sake of implementing a QR renderer as TTF hinting code?
iguessthislldo 10 hours ago
I love seeing nonsense like that. How that work graphically though? Just keep adding to a same QR code that keeps getting denser as more text is added? I guess it doesn't have to practical though :)
gus_massa 4 hours ago
Someone implemented the Bad Apple animation inside a font https://blog.erk.dev/posts/anifont/ ( https://news.ycombinator.com/item?id=373170550 | 177 points | Aug 2023 | 62 comments )
ahlCVA 7 hours ago
Barcode fonts have been around for ages. But what's cute about this one is that it can calculate the EAN13 checksum on its own.
alex_suzuki 7 hours ago
It can’t, at least for Code 128? There’s a text field that you enter the text into, and then the start/stop/checksum characters are computed.
ahlCVA 7 hours ago
It seems like it doesn't do this for Code 128 (possibly because it is variable-width?). It definitely works with EAN13 though - I tried it locally using only the TTF file.
alex_suzuki 6 hours ago
infogulch 2 hours ago
Neat! Barcodes are much more complex that I knew before looking into it. I used JsBarcode [1] to create a special barcode that reprograms a cheap barcode scanner we got on Amazon to be able to scan both UPS and FedEx tracking numbers. It is published on CodePen [2].
joewhale 3 hours ago
fyi code 39 barcodes are outdated because of the lack of check sums and leads to false positives.
muhammadusman an hour ago
just curious: are barcodes better in anyway compared to a QR code?
ciupicri 4 hours ago
It's not clear to me how can I put FNC3 and the beginning of the Code 128 bar code.
utopiah 11 hours ago
Damn, yes please.
Another cool font, but less original, I stumbled upon recently is Marelle https://marelle.forge.apps.education.fr/ for cursive.
mos_basik 2 hours ago
Love it. Flashbacks to CE1 and CE2 (2nd and 3rd grade in the US system) in a French embassy school, simultaneously handling "immersion in real french", "using a fountain pen for the first time", "different long division" (https://en.wikipedia.org/wiki/Long_division#Eurasia) and "different cursive" (I think the method I was coming from was D'Nealian? https://en.wikipedia.org/wiki/D%27Nealian)
albert_e 10 hours ago
> https://marelle.forge.apps.education.fr/
This website is in French so I was unable tounderstand the text
and the website is very resistant to automatic translation by Google Translate
>https://marelle-forge-apps-education-fr.translate.goog/?_x_t...
What gives?
utopiah 9 hours ago
No problem translating it with Firefox :
" Marelle is a free cursive police force for teaching writing in elementary school. Introduction
This project is supported by the Digital Directorate for Education of the Ministry of National Education, and developed in the Forge of Digital Educational Commons.
The Marelle police is designed specifically for teaching cursive writing in elementary school, it was developed by a team of teachers and designers specialized in writing systems.
Teaching Cursive Writing
Structure and sequence of letters, rhythm and proportion, contextual variants: the Marelle font was thought around specific criteria to offer a quality model to teachers and students. Particular attention has been paid to the trace of numbers, capital letters and punctuation. A complete professional tool
The Marelle police offers 3 types of variants:
uppercase sticks or cursive
with or without lineage Seyes
height of ascendants and descendants
jurgemaister 9 hours ago
piltboy 9 hours ago
"Marelle is a free cursive font designed for teaching handwriting in [French] elementary school."
I'm not sure they owe it to anyone to make the website available in English :-)
tokai 5 hours ago
ooh thanks, the Bâton in capital letter is very nice.
tecleandor 7 hours ago
Nice! That looks pretty similar to the one in "Cuadernos Rubio", a system that was super popular from the 60s to the 90s in Spain (that still exists) for learning handwriting in primary school.
endre 11 hours ago
this is genius
alex_suzuki 7 hours ago
This would be more interesting if you wouldn’t need to calculate checksums yourself, and could just write the barcode value. Good luck doing that with something like Reed-Solomon (QR, Data Matrix, etc.) or the shenanigans they’re doing with GS1 DataBar.
nemoniac 10 hours ago
ASCII only?
Terr_ 9 hours ago
More or less, AFAICT the underlying barcode standards don't support Unicode, if that's what you mean.
It looks like Code 128 could potentially handle some ISO-8859-1 accented latin characters, but I'm not sure how to test it.
ale42 9 hours ago
Code 128 supports some ISO-8859-1 indeed, but it requires switching between encodings (there are 3 of them), and couldn't work with 128B (I guess the one used by the font, as it supports ASCII). See the table on Wikipedia: https://en.wikipedia.org/wiki/Code_128
trashb 7 hours ago
matsemann 7 hours ago
Even with plain ASCII we sometime struggle with the various scanners, as they emulate keyboards. So for instance using : in the barcode as a separator of values becomes wonky if the OS has a different input language than expected.
dmitrygr 12 hours ago
This is a perversion of the most sickening nature. Nicely done!
breakingcups 10 hours ago
I'm surprised at this reaction, this has been standard practice for many years in various companies where I worked.
dfox 7 hours ago
The fact that this is standard practice does not mean that it is not perverse. It kind of works sanely for plain Code39 (and even then you will see effects of doing that in weird places, like VAG stamping human readable VIN on a chassis, including the Code39 start/stop symbols), once you start using barcode fonts for Code128-derived symbologies (ie. UPC/EAN) the whole thing becomes a pointless exercise.
Dwedit 5 hours ago
I mean there was already the Bad Apple font (keep adding another character to your text and you get the next video frame)