[Cuis-dev] Icons with path sequence in vector graphics

[Juan Vuletich]

Hi Folks,

Luciano's fix is not at GitHub.

Thanks!

On 2026-06-27 4:46 AM, Luciano Notarfrancesco via Cuis-dev wrote:
> Hi Bernhard,
> It was actually a bug in the parsing of the path data, related to 
> implicit commands (when a command is not explicitly specified but 
> implied from the previous command). This fixes the bug, or at least 
> fixes the ink marker example, let me know if you find any other icon 
> that doesn't work as expected.
>
> Thanks!
> Luciano
>
> On Sat, Jun 27, 2026 at 3:11 AM Bernhard Pieber <bernhard at pieber.com> 
> wrote:
>
>     Hi Juan, Hi Luciano,
>
>     This is great! Many icons work well.
>
>     What's most amazing: The Ink Marker even works when I move it! ;-)
>
>     (IconMorph new pathData: 'm272-104-38-38-42 42q-19 19-46.5
>     19.5T100-100q-19-19-19-46t19-46l42-42-38-40 554-554q12-12 29-12t29
>     12l112 112q12 12 12 29t-12 29L272-104Zm172-396L216-274l58 58
>     226-228-56-56Z') openInWorld
>
>     ...
>
>
>
>     I guess the drawing artifacts have nothing to do with the pathData
>     parsing, right?
>
>     The class category of IconMorph is named Widgetst. I guess this is
>     a typo.
>
>     Thanks für working on this!
>
>     Cheers,
>     Bernhard
>
>
>     > Am 25.06.2026 um 17:00 schrieb Juan Vuletich via Cuis-dev :
>     >
>     > Hi Luciano,
>     >
>     > On 2026-06-25 5:16 AM, Luciano Notarfrancesco via Cuis-dev wrote:
>     >> Hi Juan,
>     >> Thanks for the detailed explanation of the rationale behind your
>     >> design. I was considering using TTF icons, but then I thought it
>     >> was going to be annoying to have to work with arbitrary code points
>     >> instead of the actual fonts, or would require a global mapping
>     name ->
>     >> icon/codePoint that I also didn't like much, so I followed your
>     >> suggestion of doing this instead of TTF fonts and now I see
>     it's much
>     >> cleaner and simpler.
>     >
>     > Most important to me, using TTF forces you to use text metrics
>     > arguments, when you're actually doing graphics and text metrics are
>     > maningless here.
>     >
>     >>
>     >> I'm still not sure, but at this point I feel that we don't
>     really need
>     >> the reified PathCommands (or perhaps they just belong to the SVG
>     >> package), I'd prefer to use literal Float32Arrays directly if
>     we added
>     >> support for the rest of the commands.
>     >
>     > Yes. We need to add support for the rest of the commands. It is
>     in my
>     > ToDo list now.
>     >
>     >> BTW, regarding #[], I'd like to suggest to change it to create
>     >> Float32Arrays instead of Float64Arrays... apparently all the
>     current
>     >> use cases end up converting them to Float32Array anyway, and
>     for that
>     >> they use two syntactic suggars: #[] and the backtick, it would be
>     >> simpler if #[] produced Float32Arrays instead...
>     >
>     > You're right. Just pushed 2 updates for that. We never actually
>     needed
>     > literal Float64Arrays anyway.
>     >
>     >>
>     >> Here's an example of an IconMorph, not necessarily the best
>     >> implementation but it shows the idea, you can test it like this:
>     >> IconMorph new pathData:
>     >> 'M240-200h120v-240h240v240h120v-360L480-740 240-560v360Zm-80
>     >> 80v-480l320-240 320 240v480H520v-240h-80v240H160Zm320-350Z'
>     >
>     > Just pushed your IconMorph as an update. Included this as a class
>     > example method.
>     >
>     > Thanks!
>     >
>     >>
>     >> Cheers,
>     >> Luciano
>     >
>     > --
>     > Juan Vuletich
>     > www.cuis.st <http://www.cuis.st>
>     > github.com/jvuletich <http://github.com/jvuletich>
>     > researchgate.net/profile/Juan-Vuletich
>     <http://researchgate.net/profile/Juan-Vuletich>
>     > independent.academia.edu/JuanVuletich
>     <http://independent.academia.edu/JuanVuletich>
>     > patents.justia.com/inventor/juan-manuel-vuletich
>     <http://patents.justia.com/inventor/juan-manuel-vuletich>
>     >
>     > --
>     > Cuis-dev mailing list
>     > Cuis-dev at lists.cuis.st
>     > https://lists.cuis.st/mailman/listinfo/cuis-dev
>
>
-- 
Juan Vuletich
www.cuis.st
github.com/jvuletich
researchgate.net/profile/Juan-Vuletich
independent.academia.edu/JuanVuletich
patents.justia.com/inventor/juan-manuel-vuletich
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