13:18 <guso78k> https://imgur.com/a/BxkPynt

13:18 <guso78k> yet another 12sided sphere ...

15:53 <gbruno> [github] ochafik synchronize pull request #5185 (Simple color support in 3D rendering (includes OFF color import / export)) https://github.com/openscad/openscad/pull/5185

15:54 <gbruno> [github] ochafik closed issue #4319 (Feature request: faster projection cut) https://github.com/openscad/openscad/issues/4319

15:58 <gbruno> [github] ochafik synchronize pull request #5185 (Simple color support in 3D rendering (includes OFF color import / export)) https://github.com/openscad/openscad/pull/5185

20:42 <kintel> J24K About the WARNING: PolySet -> Manifold conversion failed

20:43 <kintel> I recently made it nicer, by pulling some common use-cases out of the warning

20:44 <kintel> I still prefer to make it a warning, but we can discuss adjustments: Whenever this warning hits, we're forced to attempt to repair your mesh. This repair often succeeds, but a side effect of mesh repair is that we lose any color information

20:44 <kintel> Once we start supporting color preservation during rendering, this will have real effects for non-monochrome designs

20:45 <kintel> (one adjustment we could make would be to downgrade the warning for monochrome objects)

20:49 <kintel> J24L About the 3mf export-import error: Could you share an example?

20:50 <J24k46> kintel this happens with my designs which are always bit more complex due to the library use

20:50 <kintel> There is a known weakness in the 3mf importer: It uses CGAL to union objects on import, so if the union of the imported objects is not manifold according to CGAL -> boom

20:50 <kintel> See https://github.com/openscad/openscad/issues/4825

20:52 <J24k46> as my 3mf are lazy union multi objects - possible .. iirc after the error only 2 of the 3 objects were imported

20:55 <J24k46> kintel here https://imgur.com/a/rfdwljV

20:56 <J24k46> you can dl the file  https://www.printables.com/model/902861-clicker-knob/files#preview:file-hyL5M

20:57 <kintel> That makes complete sense: Two solutions: 1) union using Manifold on import or 2) allow importing "lazy union" lists of objects instead of merging into a single object. Needs someone to implement it :)

21:00 <J24k46> If we would be able to select import like we can on svg .. the union wouldn't be a problem - i mean at the moment we don't officially support multiple objects - but the future will be multiple objects

21:01 <J24k46> but interesting that 2 of the 3 objects survived

21:07 <J24k46> kintel regarding the warnings - i agree that it should be a warning with those consequences,  But the "stop at first warning" makes only sense if you could change anything. And as other warnings are like "ignoring unknown variable" or  cylinder h=0  or something like that it may be great to differentiate between parser warnings and render engine

21:07 <J24k46> warnings

21:26 <Zeftax> I would like to try to contribute to a foss cad project. I do have a few years experience with .net development for bricscad. Would this be the right place to start? If so, how can I help?

21:34 <Zeftax> Oh, I now see the source is on github, which steals your code for AI.

21:35 <teepee> right, good talk

21:35 <teepee> kintel: CircleCI: Intel-based macOS resources end of life on June 28. The macos.x86.medium.gen2 resource class will not be available after June 28.

21:41 <J24k46> kintel just found another irregularity with manifold https://imgur.com/a/WO5Dg4G .. not sure why these stripes occur and they are quite small but just look ugly

21:45 <J24k46> here without manifold

21:45 <J24k46> https://imgur.com/a/b42XBr1