13:59 <pca006132> I am revisiting my previous faster evaluator project... it seems that there are many variants of if comprehension in openscad

13:59 <pca006132> curious if the more complicated variants are really widely used out there

13:59 <teepee> only lists

13:59 <teepee> there's some overlap with the chaning of functions

14:00 <pca006132> *list comprehensionn

14:00 <teepee> or what do you mean with "more complicated variants" ?

14:02 <pca006132> hmm, seems not as complicated as I thought, just many variations

14:05 <pca006132> reading the wiki about the language, it seems that people consider "let" part of the syntax of list comprehension, but shouldn't it be the syntax of an ordinary expression (instead of specific to list comprehension)?

14:06 <teepee> it's available in both contexts, like echo too

18:03 <kintel> pca006132 If exposing the parallel functions is something you want to support going forward, exposing and using them would be fine, and we already depend on TBB so that's ok too

18:04 <kintel> In terms of clipper2, we probably need more of the API surface than Manifold offers, so not sure if it's worth chasing that. We want to port to clipper2 in general though, but I ran into some issues

18:05 <kintel> Also note that clipper2 is 32-bit while clipper1 was 64-bit, so we need to be careful about precision

18:55 <Xowap> Hello there, quick question regarding keeping exports: I've seen various tickets, I've seen colorscad, but none seems to be working. Is there a "safe" commit/version of OpenSCAD that you can use to export colors into OrcaSlicer (I don't care the format as long as I can import it). For now I've tried with 2021.01 and the latest develop commit, I

18:55 <Xowap> can't seem to understand how to make that export: colorscad either gives me everything the same color (stock openscad) or an empty geometry (develop).

19:33 <J24k> Xowap you can try https://ochafik.com/openscad2/ and OBJ export ( as BS can import colors only from obj .. so probably orca)

19:39 <J24k> oh just noticed BS can import 3mf color models  ..  and this works

19:49 <J24k>  https://github.com/ochafik/openscad/tree/color-assimp2

20:06 <J24k> Xowap here https://imgur.com/a/jz8BHa4

20:08 <Xowap> nice, thanks

20:09 <Xowap> I'll try this out

20:10 <J24k> It seems to me that there is some special 3mf multi color export added on the WASM website to make this working

20:10 <J24k> color rendering is working in the snapshot but afaik not color export so far

20:12 <Xowap> well the color-assimp2 branch isn't compiling on my machine

20:12 <J24k> also multi color faces are not working so well

20:12 <Xowap> right, which is exactly what I'm attempting to do

20:13 <Xowap> so no OpenSCAD for this project I guess :'(

20:14 <J24k> just keep the objects single color - as you already have because you can't color faces in openscad

20:15 <Xowap> well basically I've made a negative of my text (- small delta) and put back the text in the whole with the surface at the same level

20:15 <Xowap> so idk how it counts, but in effect it's a multi-colored surface

20:16 <J24k> not with lazy union

20:16 <J24k> you also don't need the negative for a multicolor print as BS will calculate the overlap

20:17 <Xowap> right

20:18 <Xowap> well, the 3MF is completely fucked once in OrcaSlicer

20:20 <J24k> try this test cube https://file.io/E4QlCDl3FaEL

20:20 <Xowap> well, my other option is to put ifs everywhere to be able to render colors individually and then use that as a mask in orca

20:20 <J24k> that worked well in BS

20:20 <Xowap> indeed, that worked

20:20 <Xowap> I must have done something wrong

20:21 <J24k> did you use the WASM website?

20:21 <J24k> did you set the colors for the 3mf multi color export?

20:21 <Xowap> yup, I use the wasm website

20:21 <Xowap> and yes I set the colors

20:22 <Xowap> but orca got confused with units or something

20:22 <J24k> I also tested with MS 3d builder but assigning colors there is not accepted by BS

20:25 <J24k> but else just export the objects als multi part with lazy union and color in orca

20:25 <Xowap> all right, got it working now

20:25 <Xowap> thanks

20:26 <Xowap> just needed to find the right answers to orca's questions

20:26 <Xowap> still complaining about non-manifold edges and stuff but I got my objects aligned

20:27 <J24k> repairing causes color loss (at least when i tried)

20:27 <Xowap> I can't even repair, I'm not on Windows

20:28 <Xowap> right, time to sleep, I'll see what I do tomorrow

20:28 <Xowap> thanks for the help :)

20:28 <J24k> ure welcome

23:14 <stealth_> can you not do .step using openscad?

23:15 <stealth_> https://wiki.bambulab.com/en/software/bambu-studio/step