Posts made by z3dev

Welcome!

Sure. There are several websites that already have custom layouts, custom controls, etc.

Here's an example; http://www.knowhave.com/gear/worm.php

@gilboonet Welcome again! Cool little site.

This is the first time that someone wants to plug into the results of the processing. It may be possible with V2 as there's more flexibility internally. If you have time, can you open a new issue for this? It would be better to track the progress via the issues.

It's official!

V2 includes hull for 3D geometries, as well as 2D geometries. This has been long overdue, and one of the most requested features over the past few years.

Big thanks to @jallwine and @hg42 for the initial V1 versions.

Example of hull for 3D geometories

Example of hull_chain for 3D geometries

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.

Sorry, but the hull of 3D solids is not possible with V1 of OpenJSCAD.org.

There's a pull request for this which uses an external library, if you would like to try modifying the CSG library locally.

PR #134

Otherwise, please be patient as we hope to include this in V2.

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

We are still working on V2 changes, and making some excellent progress now. So, I thought another teaser would be appropriate.

The extrusion functionality has been expanded slightly, allowing almost any shape to be extruded (within limits). This also means that shapes with holes can be extruded as well. Here's a quick example of the new extrudeRotate() function.

There are some functional changes coming in the V2 deserializers, i.e. importing AMF, DXF, OBJ, STL, and SVG files.

The first major changes is that both translation and instantiation is possible. Like before, translation of found geometries to JSCAD scripts is possible. In addition, found geometries can instantiated directly in object form.

The second major change is that ALL found geometries are returned. No more unions. So, you can directly work with any one of geometries.

The third major change is...

... geometries can have color. This conversion was from a large DXF with lots of 2D lines.

Maybe you could build a table of randon values while in 3D mode, then save those for use by the 2D mode.

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!

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.

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!

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.

@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

Very interesting indeed.

What are you going to do with all of those slices?

It seems to me that the ‘Code’ tab in the upper right exposes the code in BlocksCAD. I was able to select and copy the code.

Unfortunately, the JSCAD organization doesn’t support the Azure application, as that was ported and enhanced by someone else. The JSCAD version is from 2015 as well, so there are probably lots of issues.

*Project ID: M0302
OpenJSCAD.org

Thank you for applying for Maker Faire Tokyo 2019.
We are glad to notice that your exhibit is accepted.

We are looking forward to meeting you in Tokyo!*

So, it’s now official!
Let me know if anyone wants to attend.

There are many ways to do anything.

The simpleRotate() function isn’t wrong but reminded me of a small piece in the new star primitive (new in V2).

const getPoints = (vertices, radius, startAngle, center) => {
var a1 = degToRad(startAngle)
var a = 2 * Math.PI / vertices
var points = []
for (var i = 0; i < vertices; i++) {
let point = vec2.fromAngleRadians(a * i + a1)
vec2.scale(point, radius, point)
vec2.add(point, center, point)
points.push(point)
}
return points
}

I hope this provides some encouragement.