@gilboonet cool, combining it into single app would be awesome one day

Thanks to the browser cache I was able to run the script again and it already had all values loaded and I only needed to change the slider that was badly positioned.

@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]

@gilboonet vool . Nice to see it working

@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.

@hrgdavor That would be great. For the moment I'm certainly going to try to do the same thing using svg into vanilla js.

@platypii Thank you for this investigation. I remember that I tried to get JSCAD to union those groups but then it loses colors. I use Wings 3d to colorize my models, and it does not split them into separate objects (on my screenshot I have only one geometry), only materials are separated into groups. [image: 1655194392922-capture-d-%C3%A9cran-du-2022-06-14-10-11-33.png] [image: 1655196467063-capture-d-%C3%A9cran-du-2022-06-14-10-29-42.png] I splitted the model into 3 geometries and then exported it to .obj and the difference is that it contains 3 lines starting with "o " that defines start of an object. Maybe for the moment JSCAD translate lines starting with "g " like "o ".

@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.

I changed my obj importer code to make it work with obj without groups. Now I can start to colorize my models by code. And there's one nice thing about that : I can use that faces coloring to store a volume's unfold pattern. [image: 1648412375738-capture-d-%C3%A9cran-de-2022-03-26-21-48-08.png]

@gilboonet that is excellent, it may be possible later on to integrate that one with jscad or at least take your experience for ideas how to improve 2D use-cases in jscad.

@gilboonet yes, specification for sort functions is to return zero if a==b return neg or positive number depending if u want to sort ASC or DESC

@z3dev Sadly, lines already have a color (red for cuts, maroon for mountain fold and green for valley fold). [image: 1642928915791-capture-d-%C3%A9cran-de-2022-01-23-10-07-15.png]

@z3dev You can also change the model, Venus has 1000 triangles and takes 30 sec. on my laptop to unfold (ubuntu with Firefox).

@gilboonet that is definitely something worth considering either as part of jscad or an addon library. I think we will have better idea after I have some time to cooperate with you on your project. It is definitely an interesting use-case, and a real project will give much needed insight on how to proceed with it.

@gilboonet I finally take advantage of geometries id and class preservation, and created a small js node script that creates a group for all paths having the same class, and at the same time I solve another annoyance that was the impossibility to search by numbers by creating id. That's very nice.

@gilboonet it is nice to see a multilingual script

@z3dev Yes, add Memory would be great, I felt the difference when I changed from 4 Gb to 8. For the moment I'm simply starting to use my laptop as main computer.

@z3dev the .json