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Show HN: FluidCAD – Parametric CAD with JavaScript (fluidcad.io)
ramses0 17 minutes ago [-]
I'll throw my hat in on the feedback... looks great!

https://github.com/openscad/openscad/pull/4478#issuecomment-...

My pet use case is: "My naive approach as a programmer would be: `pen := new Pen(q,r,s,t); box := new Box( pen.L, pen.W, pen.H )`" along with being able to sometimes work with the whole pen, and sometimes touch the pen vs. the cap separately.

Since it's all javascript, it seems like there's a chance that this use case would work (ie: `p = Pen(...).render().getWidth()`)? Additionally, your intermediate step screenshots really makes it seem like a SketchUp-ish GUI would be perfect! Obviously a ton of work, but SketchUp's "grab face + extrude / push", but if it were "sticky" to the underlying parametric components seems like it'd be an awesome combo... something like group/components, but backed by code instead of GUI-only (or GUI-centric) editing.

interstice 10 minutes ago [-]
I've been working on this exact idea! But it's late, will remember to come back and check this out to compare notes.
bsimpson 26 minutes ago [-]
The thing that made Flash magical was that it had the approachability of a design tool (and it really did have some of the best design tools ever), with the extensibility of a scripting language. You could start by drawing on a canvas and grow into programmatically generating designs.

This looks like it could do the same thing for constraint modeling. That's awesome!

unforbiddenYet 25 minutes ago [-]
Nice work and kudos for programming it by hand! Starred the project and plan to try it out soonish.
WillAdams 2 hours ago [-]
astroalex 1 hours ago [-]
One obvious difference I can see at a glance is that Maker.js doesn't support 3D models, while FluidCAD does. I assume Maker.js is a lower level library aimed at interfacing directly with CNC machines, while FluidCAD is focused on 3D design.
WillAdams 1 hours ago [-]
Maker.js is supposed to also support openjscad (or whatever they're call it these days, the JavaScript enabled version of OpenSCAD).
CWIZO 2 hours ago [-]
This looks great. I just started trying to generate some models using golang and the ecosystem doesn't seem great. Will check this out, might work out better.
shocks 1 hours ago [-]
This looks awesome.
alterom 2 hours ago [-]
What geometry kernel is it using?

Which operations are supported? (Booleans? ...)

Where's the API link?

...finally, was this vibe-coded?

Inquiring minds want to know!

kaesve 2 hours ago [-]
I was also curious, looks like open cascade, and a pretty good range of operations supported (see https://github.com/Fluid-CAD/FluidCAD/tree/main/lib/oc). Super cool!
maouida 2 hours ago [-]
Based on opencascade wasm. Features in the docs. Api coming soon. No it was not, I started this before I even started using coding agents. It took many iterations and rewrites before settling on the current shape. After building the core features I started using claude to add more features, improve test coverage and generte docs.
alterom 3 minutes ago [-]
Thanks!

> Features in the docs

The Docs section of the website has "Installation", "Editor setup", and "Your First Model".

Not a list of operations/features.

The front page lists some (extrusion, fillets), but not all.

Is the entirety of OpenCASCADE exposed to the user via the JS API, or are you only supporting a curated subset?

35 minutes ago [-]
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