JSCAD User Group

z3dev

Maker Faire Tokyo 2019
日時：2019年8月3日（土）、8月4日（日）
会場：東京ビッグサイト（東京都江東区有明3-11-1）
アナウンス: https://makezine.jp/blog/2019/01/mft2019_announce.html

Maker Faire Tokyo 2019
Dates: August 3rd to August 4th
Place: Tokyo Big Site
Announcement: https://makezine.jp/blog/2019/01/mft2019_announce.html

I’m hoping to show JSCAD again this year. Let me know if you’re in town.

z3dev

It’s been a while since we have posted any update on V2, so here’s a few notes on what’s going on.

First, the reorganization of the CSG library is almost done, but like always the last 5% takes the most time. Once again, the major goals are:

Move to functional API, i.e. no more monolithic objects
Standardized function names, parameters, error checks, etc.
Lots of small modules to allow more reuse
Math and Geometry data structures based on arrays
Tests for everything

There have been some name changes to functions, but the new names are clear. Parameter names haven’t changed much, but one major change is the usage of RADIANS for all angles and rotations. There are several bug fixes and improvements as well. Tests… yeah… lots… 394 test suites with over 90% coverage.. and this will continue to improve.

Second, all JSCAD libraries are being brought together into one repository; OpenJSCAD.org. This allows the libraries to be managed together, and produce releases faster. And hopefully, contributions from anyone at any level will be easier. This includes the CSG library, IO library, and new viewer.

Third, you can start following along. There are still a few major changes coming, but you can already get a good feel for things by cloning the OpenJSCAD.org repository, and looking at the V2 branch.

Feel free to ask any questions about V2.

z3dev

We had a great time showing JSCAD at Maker Faire, showing both V1 and V2 (alpha alpha) to folks, as well as entertaining kids with a small toy designed with JSCAD. As usual, the faire was packed both Saturday and Sunday.

z3dev

There's some new functionality coming with V2, which is pretty exciting. So, I thought a little preview would be nice.

This is the new offset() function, which can calculate the offset of a path or a 2D geometry.

Here's a photo of a line (black) being offset both positive (green) and negative (red), with rounded corners.

And here's a simular image of a 2D geometry, but note that this geometry has a hole. So, offsets are applied to both inside and outside edges. In this case, the corners are only connected at the intersection of the edges.

Hope you like this one!

z3dev

@kevinos welcome!

The JSCAD model (code) is required as the compilation is completed by the browser. So, you will have to find ways to obfuscate the code.

z3dev

So, it's time for another update on V2 progress.

We have been busy finishing those last 5% of changes to the CSG library, which is DONE!!! And now, those changes are being merged into the larger repository (OpenJSCAD.org) as V2 changes.

There's a lot of COOL things in V2.

As mentioned earlier, all of V2 has full test coverage, so we now know when changes break things. And, we have also been working on some performance tests as well, in order to know when performance is affected.

I thought you'd be interested...

Here's a comparison of V2 performance versus V1 performance. Note that comparisons are not apples to apples, but you'll get an idea of what's improving. Also, we now know where we need to improve as well.

PDF File

z3dev

@kevinos no problem.

so, JSCAD designs are actually Javascript functions which perform calcuations, create geometry, perform operations with geometry, and finally return the geometry of interest.

const {primitives} = require('@jscad/modeling')

const main = () => {
  let object1 = primitives.circle({radius: 22, segments: 36})
  object1.color = [1,0,0,1]

  return object1
}
module.exports = {main}

The return of object1 from main() is a 2D geometry, i.e. a geom2 object. In the WEB UI, this object is passed to the 'rendering' function, and shows up on the screen as a red circle.

The Vue component requires 2D/3D geometries as well. And as a Vue component, it can live inside another Vue component (or application). This is the rendering piece only.

The JSCAD WEB UI is doing a whole lot more underneath. It loads all the code, evaluates (compiles?) each piece of code, and finally executes the main() function.

If you want this functionality then there's some more plumbing required.

z3dev

@kevinos sure.

here's the code https://github.com/z3dev/vue-components

this is only a viewer for a pre-compiled (JSON) design. V2 only!

Best posts made by z3dev