@hrgdavor Thank you, I will try from this demo.html file. I already used that file at early stage of V2 to take snapshots of a scene to create an animation, but I'm not sure I understood it all.

@gilboonet Well, actually I figured out! I was using earcut.js to create indice, and with little bit of touch with the result of CAG union/subtract/intersect it worked well. Thanks for the reply.

@z3dev ok, thank you very much for your feedback

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@gilboonet the example looks fine. You can create, rotate, transform all the math objects.. Now comes the fun part... curves, distances, etc. There are little tidbits of logic throughout the library. You can find some of the basic calculations in the primitives, I.e. arc, circle, sphere, etc. And of course, let us know if you have questions.

@z3dev I finally resolved it by not using transforms and directly compute the center of the rectangles, that way the geometry sides were ok without any need to transform. I hope to be able to reuse that code for same kind of simple designs. [image: 1678010657825-capture-d-%C3%A9cran-du-2023-03-05-10-58-47.png]

@hrgdavor Thanks: https://github.com/jscad/OpenJSCAD.org/issues/1317

@shay-cerny Welcome This isn't exhaustive but lists some of the websites using JSCAD. https://openjscad.xyz/dokuwiki/doku.php?id=en:user_guide_help

@sopatt Sorry to the late reply. You probably already know this but an ''orientation" is required to determine the rotation, and sign of the angle. This is probably the best implementation out there. And if you want then this could be added to the vec3 functions. https://stackoverflow.com/questions/5188561/signed-angle-between-two-3d-vectors-with-same-origin-within-the-same-plane

The booleans are working fine but the orientation of the polygons are super important. You can check the orientation your self, but one of the easiest checks if volume(). Hope that helps

It would be really cool to have further cooperation with BlocksCAD. That interface is really interesting, and easy to use. I know that several versions of CSG library have been integrated, so further cooperation should be possible. However, it seems BlocksCAD has not been revised since 2017. It seems that ‘yoderdan’ has not made any changes lately, so his input would be required.

Of course, you can use the STL design to subtract from another design. Is that not accurate enough for your needs? Measuring from point to point, or across a design isn’t possible. But you can always take a small slice of a design, and measure that using bounds.

Great question! For beginners looking to get started with JSCAD, I found it helpful to explore various promotional and design resources online. One useful site I came across recently is promover — it has some interesting design-related resources that complement working with 3D modeling tools like JSCAD. Hope this helps anyone just starting out!

I just found that there is an issue on the repository about this concern : https://github.com/jscad/OpenJSCAD.org/issues/438. For the moment I simply copy-paste the content of the library into the script to make it work.

@william-adams might be interested in BlocksCAD https://www.blockscad3d.com/editor/ This can also be found on GitHub, but has not been updated for a few years. https://github.com/EinsteinsWorkshop/BlocksCAD

You might want to post your question on stackoverflow https://stackoverflow.com/questions/tagged/openjscad - the audience is bigger there.

The simple solutions are always the best. Taking a super thin slice is a great idea, and maybe even the best. The core library will be for core functions, as we expect others (like you) to contribute some really nice high level functionality, such as slicing. If we get the core library rock solid then anything is possible. Projections on to arbitrary planes is on the wish list, but not there yet. Thanks for the awesome posts!

@z3dev This looks absolutely amazing ! Lots of uses cases (I am a sucker for 2d in 3d haha)

That's very good job, looks promising.

There have been several discussions about how to build transitions between shapes. Hull and Minkowski are good at combining shapes but don't really provide the workflow described here. Here's one from a while back.. Can we extrude arbitrary and changing 2D shapes along a 2D/3D path? I would hope that some of the folks here could provide some tips.