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Rubik's cube solver

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AlexN
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Hello everybody
So I'm currently trying to model a rubik's cube in Houdini 16.5 Apprentice. I followed this tutorial [www.youtube.com], but sadly it doesn't really explain how to make the actual jumbler/solver. I tried it myself with a couple of switches and solver (see attachment), but I can't seem to get it working.

My main problem at the moment is that the transformations (the turns) are always applied to the “original” geometry, so the solved cube and not ontop of the already applied turns. So the cube gets one turn, snaps back into the original, solved geometry before another turn is applied.

Many thanks for your help and/or nudges in the right directions in advance!

Attachments:
rubicscube_final.hipnc (667.0 KB)

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mestela
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I posted a scrambler here:

http://www.tokeru.com/cgwiki/?title=HoudiniVex#Rubiks_cube [www.tokeru.com]
http://www.tokeru.com/cgwiki [www.tokeru.com]
https://www.patreon.com/mattestela [www.patreon.com]
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AlexN
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Hi Mestela

Thanks for your quick answer.
I actually already stumbled across your scrambler before, but I don't really know if it would be compatible with my cube? Your approach is to build your cube from nine small Box-elements, whereas I cut one Box into smaller bits and then group them, so the small bits can't really move at their own as far as I know.
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mestela
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If you've cut your shape into separate polygon islands, you should be able to make it work. Try an assemble sop with pack mode enabled. Otherwise post a hip file and the hive mind here can take a look.
http://www.tokeru.com/cgwiki [www.tokeru.com]
https://www.patreon.com/mattestela [www.patreon.com]
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AlexN
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Thanks, I'll have a look at your code again
I have already attached the file to the original post (I assume a .hipnc file is more less the same than a .hip file?), but anyway, here it is again:

Attachments:
rubicscube_final.hipnc (685.8 KB)

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mestela
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Here you go. The idea here is to find a correspondence between your cube and my point setup, laziest way to do that is to set a @id attrib on my cube, get your cube and my cube roughly aligned, then attribtransfer @id.

With that done, can use the transformpieces sop, which is designed to transfer anim from a lowres rbd onto a highres one, but here transfer anim from my points to your cube components.

Attachments:
rubicscube_final_with_solver.hipnc (390.1 KB)

http://www.tokeru.com/cgwiki [www.tokeru.com]
https://www.patreon.com/mattestela [www.patreon.com]
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AlexN
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Hey thanks a lot for yoiur work! However, I seem to do simething wrong. Whenever I open your file, I can't see anything on the pane (see picture), even if I add for example a new Box-element.
I'm running Houdini Apprentice 16.5.268 and tried it on Linux (Debian Stretch 9.3) and Windows 10. Other files work without any problems. Is there something I'm missing or might it have something to do with me using the Apprentice version?
Edited by AlexN - Dec. 14, 2017 04:21:46

Attachments:
Houdini.PNG (1.1 MB)

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mestela
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Ah, it's flipped into manual cook mode in the lower right corner. Set that to ‘auto update’.
http://www.tokeru.com/cgwiki [www.tokeru.com]
https://www.patreon.com/mattestela [www.patreon.com]
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AlexN
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Alright, many thanks, works like a charm now!
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