Posts made by gilboonet

@hrgdavor Thank you, that's very nice. It's not that I like folding things but it's a process I use to build them with cardboard

@hrgdavor It's a tablet that I used with my jscad scripts for a long time...

@hrgdavor I think Firefox 68.11.0 is the last one that can be installed in this tablet, I will try to update/install other browsers.

@z3dev I tried to see what ES6 javascript engine it has, only saw the firefox version that is 68.11.0. It displays an error about webgl

But I'm using it for years with webgl apps

But it is not important, it's just that is was very handy to use jscad on it and the screen is bigger than a smartphone screen.

@hrgdavor The geometries are good. It's something I'm trying to do with jscad for more than 5 years now and for years, before v2 and last build of v1, it wasn't. I already tried to start from union of difference of rectangles and then extrude, but the STL i get is the same as the one I get from union of difference of cuboids. For me, the advantage that jscad has over Cascade Studio is that it renders 2d, I mostly only use web versions, so the size of a build doesn't matter. One advantage that Cascade Studio has over jscad is that it works even on old android tablets that used to be able to run jscad but doesn't anymore.

@hrgdavor what is breaking my flow using jscad is that it produces 3d models that seems to be hard to slice but only from some coordinates. It is maybe due to the way it splits polygons from its center.

It could maybe help to see unfold volumes of the same kind, a column :
rendered with JSCAD

rendered with Cascade Studio

@hrgdavor Thank you for your suggestion. For the moment I'm simply using another tool to run those scripts, Cascade Studio, that produces an STL output that can be used without errors with my scripts, it can also save to OBJ that is handy for my unfolder.

Hello, this week I made V2 version of simple furniture parametric designs. It's very simple scripts and they work fine (they are here : https://github.com/gilboonet/gilboonet.github.io/blob/master/outils/README.md)

My process then is to save the design as 3d model file, then use this file with another of my scripts to render it as a 2s skeleton that I cut. Sadly, if I try to use the exported stl file, my script has problems depending of where I want to slice. I found a workaround that is importing the stl file into Wings 3d then export it as obj and use that obj, then my script work fine. I don't see difference between the stl and obj models, so it is maybe the way they are imported to jscad (I use dynamic require). Another solution I will maybe try is to render the model using its parameters directly into the slicing script, but it's not very handy.

What is the 3d format you would recommend ?

@jess-yan Hello, the point selection is made with an external tool, Openscad Simple Polygon Editor. I modified it so that I could use it along with OpenJSCAD. But it was with a very old version and with v2 I don't see how to do the same.

@z3dev Thank you, I used demo.html to make an animation from still images of a rendering, but didn't though it could be used to make an online application. I will give it a try because if I remember correctly, V2 surface of revolution (rotate extude) allows more powerful things than v1.

Hello, here's a video I made yesterday to show how to make simple vase models from their profile. It uses a very old JSCAD version, v0.4, but as it works perfectly, I'm still using it. I'm pretty sure this can be done with current v2 version, but the handiness provided by the integration of the Simple Polygon Editor that feeds a parameter is something that is too complex (for me) to handle to convert it.

Link to the video
examples made with the editor

Hello, you can get V2 points using :
console.log(v2.sides)

I'm running JSCAD using Firefox at https://openjscad.xyz/

@z3dev Thanks a lot, it is always helpful to understand the reason of specific behaviors. My design has one path for the outline that will be cut, and lines for the folds. To remove the black fill I can try to turn the path to a polygon.

Hello, I now made the parametric version, here. The only parameter is width (largeur) that is the outer width of the frame obtained when 4 pieces are assembled together. I needed to juggle with cm and inches to make it right.

Here is a screenshot of what I have. When I view the generated svg into my browser (Firefox, bottom right), I have red and blue lines, even if there is a black fill that is certainly default because I didn't use black on the jscad script.
The other screenshot if from my laptop on win10 that I need to use my blade cutter software. I imported the svg and was able to prepare it for cut.
The only drawback for the moment is that the svg imported on Inkscape (top right of first screenshot) loses the red and blue lines, but editing the svg won't be needed for such a simple design.

@hrgdavor Thank you for your reply. I'm giving it a try.

On top left the svg that my unfolder generated
On bottom left the svg generated by JSCAD, I needed to edit it by hand to add colors. I think the parametric part won't be hard, I just need to translate the second path (poly2). I'm still need to know what unit is used (I suspect it is inches) because the final scale is not the same as the original one.

Hello, is it possible to use JSCAD to make a parametric 2d design ? I made a basic frame pattern from a 20x20x5 3d model, and unfolded its pattern that is made of 4x the same piece. I figured that this pattern can be used to make frames of any length only by changing the distance between the top and the bottom. Do you have hints to do such design ? Could I make it with 2 different kinds of line (the solid red is for cuts and the dotted maroon is for mountain folds) ?

@RunningUtes Hello, https://openjscad.xyz/dokuwiki/doku.php?id=en:jscad_design_guide is as close as possible to a getting started section. I often use its code to start new designs.

What I am now used to add is :

add this first require :
require jscad = require('@jscad/modeling')
then change others to :
require { ... } = jscad.xxx

What a new user must be aware of is that the requires are compulsory and maybe it could be a nice resource to have a list, because when you start you don't know what to use and what is the needed require to add to use something. It's a good way to make one dig the doc and the code, but it might be too much for beginners.

The functional syntax (I mean main = () => { and so on) is maybe a little odd for people who are not hardcore developers, so the examples are useful.

@z3dev I think I get it now, it means that there's no simpler way to make the slices than what I already did at first.