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<kintel>
pca006132 I finally managed to look into the issue you discovered with Manifold and issue1165: https://imgur.com/a/84IN1X7
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<kintel>
It looks like, if I just perform any additional CSG operation (like adding a cube not touching the existing geometry), Manifold collapses the thin sliver.
<kintel>
..but somehow, Manifold doesn't collapse it if the sliver is just in the result of a CSG operation.
<kintel>
Not sure if that "asymmetric" behavior is a symptom of anything, just letting you know in case it rings a bell
<kintel>
teepee Since AMF is practically dead, should we just deprecate our AMF support you think? Our AMF support needs work, but I don't think it makes much sense to put in the work.
<J24k>
kintel teepee you should now have received an email from bambu.
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<kintel>
J24k Got it
<J24k>
Great!
<kintel>
Actually, the issue at hand is something worth discussing a bit wider: What are the actual license requirements for embedding OpenSCAD-Manifold-WASM into a web application? I assume the license of our WASM package is GPLv3, but I'm not fully plugged into what that means for embedding apps.
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<Scopeuk>
it's an interesting thought, wasm is fundamentally a compiled executable which anyone could distribute with appropriate credit but the wasm builds are almost useless without a wrapper
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<InPhase>
kintel: Apache 2 can be bundled into GPLv3, so this should be okay.
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<guso78k>
kintel, exporting an 3D openSCAD model to PDF does not preserve manifoldness, but instead makes it foldful https://imgur.com/a/sRyJybY
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<J24k>
guso78k you know PDF can support real 3D
<guso78k>
:') :') actually i did not know. Maybe i should just feed my FDM printer with PDF then ...
<guso78k>
Are there any real life applications for 3D PDF ?
<J24k>
seems the first time i open a new file with a new installed openSCAD version in windows it crashes .. but the next time it works fine.
<Scopeuk>
guso78k I've seen manufacturers supply a manipulatable 3d model in a data sheet
<J24k>
there is also a measurement tool .. so nice for product presentations
<Scopeuk>
it feels a bit odd having what is effectively a print format include "live" content
<J24k>
I think video is also possible
<Scopeuk>
I think so, adobe like making pdf weird
<guso78k>
i understand the PDF has an embedded canvas along with the other documentation which shows 3D content .
<guso78k>
So all the 3D viewer settings like perspective, background, lightening sources are properties defined in the PDF file.
<guso78k>
maybe openscad should be able the export 3D pdf in addition, too ..
<J24k>
i wouldn't wonder if that is not a free feature for pdf
<J24k>
and you probably need adobe pdf viewer to view 3D objects in pdfs
<Scopeuk>
I believe we render pdf using Cairo so I guess "ease of use" will be if that supports it. it also seams likely adobe would guard that feature
<guso78k>
Scopeuk, I was really impressed when I adopted my foldables from Postscript to PDF because cairo is literally Postscript. did not know that before.
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<guso78k>
at least cairo-pdf.h does not offer any 3D functionality
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<kintel>
guso78 I guess this is actually an interesting property of manifoldness; you can unwrap it into a manifold-with-boundary-edges
<kintel>
InPhase Yeah, the WASM bundle being GPLv3 makes sense, but does that mean that the wrapping web application also needs to be GPLv3? Commercial outfits may be hesitant to OSS their web apps..
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<InPhase>
kintel: The nature of this "wrapping" you speak of is not clear to me.
<InPhase>
Mere bundling of things does not trip up the licensing requirements.
<InPhase>
kintel: The end of section 5 of GPLv3 describes an "aggregate" as allowed.
<InPhase>
With a key clause, "if the compilation [meaning here the aggregate] and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit"
<InPhase>
Also above that "which are not combined with it such as to form a larger program". It's a little ambiguous, but I take that to mean, for example, that even an AppImage does not need license compatibility for merging between all of the libraries embedded within it.
<InPhase>
Although strictly speaking the AppImage is executable, one of the key attributes is that an AppImage can be unpacked into its constituent parts.
<InPhase>
And thus the rights remain identical to if it had not been aggregated into the AppImage.
<InPhase>
Can these wasm things be unpacked?
<InPhase>
(insert standard not-a-lawyer disclosure here)
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<teepee>
kintel: my view on wasm gpl would be that if it uses the official API it's the same as running in a docker container or so
<teepee>
right now the wasm is actually called exactly via the main() command line interface
<teepee>
I suppose if we add some special entry point we may want to declare that as offical API similar to how the linux kernel defines the syscalls official api not considered linking the kernel when using it
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<pca006132>
kintel: really nice, will have a look at that later
<pca006132>
a bit busy recently
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<guso78k>
kintel, can you detail on manifold-with-boundary-edges (sketch/picture) ? i dont yet understand
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<t4nk_fn>
lol, someone read the book 'how to get both busy and filthy rich with broomsticks'
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<nomike>
hi
<nomike>
JordanBrown: Thanks for looking into the SVG problem. I already suspected an issue with the SVG itself. Now at least that is sorted out.
<nomike>
BTW: I might have found a bug. Or maybe it's intentional? If I do this, the box is not colored blue: `resize([0, 0, 15]) color("blue") cube([10, 10, 10]);`. But if I put the color() left of the resize() it works.
<nomike>
Is this known or intended behavior or should I file a ticket for this?
<nomike>
And I have another question: I have a bunch of objects and want to create a base for them. I've used the bbox example from tips & tricks. With `resize[0,0,3])` I'm resizing the bound-box to 3 mm height and then I translate it by -3 on the Z-axis. Works as it should. I now want to resize the cube by +10 on the y-axis and +5 on the x-axis and I can't figure out how to do this.
<nomike>
For the `resize` method, I need to know the target size, which I don't as the objects could be anything. And `scale` can only scale by a percentage and not by an absolute number.
<nomike>
Any suggestions?
<teepee>
the color behavior is normal because of some limitations of the preview