Posts made by gilboonet

Hello, I'm using JSCAD for years now to help me build cardboard objects, statues and furniture. I decided at the beginning of this year to build a website offering users to do the same. My crafts need essentially 2d patterns to cut, fold and glue. I used last V1 version that I embedded in my website, and replace viewer-minimal.html with some custom html allowing the user to first choose a 3d model (from a .jscad script, a .stl file, or a .obj file), then one of my crafting scripts that runs on the chosen 3d model. User configures the craft as needed, then run its 2d mode that renders 2d data. Last, user click on "Créer PDF" (create PDF) that uses the 2d data and make a .PDF file. It works fine and not only on pc (I use Ubuntu/Firefox) but also on tablet (Android).

You can use it here : https://gilboonet.github.io/OpenJSCAD.org/packages/web/scripts.html
There are some example models on "(Charger volume)".

"Depliage" script takes lot of time to render and it can take advantage of colored zones (materials) from a .obj file.

code is here (but beware I'm not an IT pro) https://github.com/gilboonet/gilboonet.github.io/tree/master/OpenJSCAD.org/packages/web see scripts.html and dist/scripts.js )

I didn't find exactly what is different between the two environments (normal jscad and min), could be getBounds() into min.js. But I fixed it using hard coded values, and it's ok. The aim of my app is to allow average user to select a 3d file then a script that will run on the model from this file and at the end create a pdf file with the cuts and folds needed to build the model. On my site I also put links to the jscad script I use to people can learn from them, but sadly if the first script was easy, it quicky gets difficult for beginners. The scripts app is here : https://gilboonet.github.io/OpenJSCAD.org/packages/web/scripts.html

Hello, I have a script that works fine standalone (right of the snapshot), but when I embed it on a html5 app, it is buggy. I tried to run it using viewer-minimal and it is buggy just the same.
The standalone script is here : https://openjscad.org/#https://gilboonet.github.io/scripts/test_tr2.jscad (must rotate X to 90). The script makes cross sections from a volume, here the bug is that the top of the orange slices is missing. With other 3d models other parts are missing. I will try to investigate this but I'm not sure it is something I'm able to debug.

Hello, you can use design parameters, it is documented here : https://openjscad.org/dokuwiki/doku.php?id=quick_reference_parameters. You add a function called getParametersDefinition() where you describe your parameters, and you add a parameter variable to your main() so it become main(params). Then you can use params.myParam1.value and so on into your code.

@z3dev Hello, I didn't open an issue because it's V1, but I will do it so we could keep track of the solution I used. Yesterday I tried my little html5 app on my android tablet with Firefox and it works perfectly

even the PDF creation part

I finally succeeded using localStorage. A little trouble is that I needed to protect the code using localStorage with a try..catch because even if it works it fires an jscad error. I hope to do the same using V2 as soon as possible.

I made a video showing the process as it is now, you choose a .jscad script with the volume, then a second .jscad script that will use that volume. On the video, the second script slices the volume and write data to the console that must be copied. Then the second app is fed with those data and creates a multi page pdf from them. What I'm trying to do is do all into one app.

https://youtu.be/qSnvnlS-A0A

To better explain what I am trying to do, I put a little app here : https://gilboonet.github.io/OpenJSCAD.org/packages/web/scripts.html
It needs to browse ("parcourir..." button) for a .jscad file that it opens and render,
then a click on the other button ("Calculer dimensions") creates code by :

• renaming "main()" to "volume ()" on the opened .jscad file
• add that code to my jscad code that uses volume() to do something with (give volume dimensions).
• then run gProcessor.setJsCad(source, 'differenceP.jscad'); where source contains the code described before.

My question is : is it possible to retrieve the returned geometries and/or other data (here the dimensions), so that my html5 app can use them ? Very nice things would be to be able to get that from DOM, otherwise an export as JSON.

Hello, I'm starting a website where I show my digital crafting processes, so visitors could produce usable patterns. At first I put links to jscad.org loaded with my hosted scripts, but sadly I was not able to produce usable 2d outputs with jscad. I built a small html5 app that generate a multi page pdf with shapes to cut and numbering to trace. But the manual process (the volume to process must be first imported to jscad, copy and paste to the crafting script that is rendered, calculated data are placed on the browser console, where they need to be copy and paste to a file, then the file is opened on the html5 app that generates the pdf) is not user-friendly (sorry for this long introduction). I'm now trying to make a little html5 app from viewer-minimal.html

I cannot get gProcessor.currentObjects on my script even if I can see it by inspecting gProcessor ? Is there a way to get returned data ? On my crafting script, I already have a data array filled with what I need to build the pdf file, is there a way to get data from a jscad script that is not into currentObjects ? I tried to use properties.myProperties.mydata but with no success. Would you recommend to start using V2 to do such development ? (my site (in french) is here : https://gilboonet.github.io/#M4 )

Hello, you can do something like what I did on this post : https://openjscad.nodebb.com/topic/104/slicing-again-simplifying-code.

Hello, I'm testing my unflatting script on a Win 10 machine and it seems that there's a bug on this platform that tries to open an included file from the main script path, but it cannot work as this path contains the main script file name. It works fine on Ubuntu, so it can be something tricky to resolve.

To make it work for the moment I replaced the includes with their content on the main script, I can easily add this to my nodejs script that create a .jscad from the .obj file containing the 3d model to unflatten. Sadly, I will only be able to use this win 10 machine for a few days.

That's very good job, looks promising.

Thank you. I will try something similar, it just needs to add a parameter to choose a design number, if the table of random values doesn't have values for this number they are randomly feeded, else they are used for the rendering. Such "mechanism" could be handy for designs using both random values and more than one viewing mode.

Hello, I have a little programming design problem : I made a design that randomly builds a circular labyrinth. It has two modes, one to view the design in 3d as it would be when finished, and one in 2d with the background to lasercut. The idea is to first view 3d mode and update till the random arrangement looks good, then switch to 2d to save the pattern to .svg to cut it. My problem is that as the script uses Math.random(), when you switch from 3d to 2d, the design will change, is there a way to be able to use designs with random values that would not be lost when switching parameters (mode here) ?

The script is here : https://openjscad.org/#https://raw.githubusercontent.com/gilboonet/designs/master/laby_rond.jscad

Hello, I'm still working on slicing scripts, and as functions like projection and lieFlat won't be part of v2, I decided to write a simplier one. My idea was to get a 2d slice of a 3d volume by intersecting it with a volume having a flat top, then only keep the resulting polygons having all vertices with Z corresponding to the flat top Z coordinate. It seems to work fine. My aim is to teach basics of OpenJSCAD to non programmers crafters, so I'm looking for easy code.

The following snapshot shows a tiny jscad allowing to retrieve a cylindrical slice from a volume.

I'm using development web console to have output, that would be great to be able to have output parameters for that, but I understand that is not something critical, it can be handled using the console output.

@kaosat-dev At first I tried to use a 10K triangles model but as it didn't render I downscaled to 5K, 3K, 2K then 1K. And after, I made another model with 2x more slices that this script was unable to render even with a 1K model, so I changed the script to make it render chunks of slices, and it was ok. I suppose it could work with higher resolutions models.

Hello,
With the same script and 3d model, I made a 60 cm tall statue with 200 sheets.

finished

@z3dev I'm making the statue

Hello, I'm using OpenJSCAD to slice a model to laser cut it and it works fine on a model with 1000 triangles. I use the SVG export directly and that's very nice, even if there's little editing to do before to export to gcode and cut.