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Abstract dance

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Abstract dance

Postby exsstas » Wed Jul 06, 2016 12:15 pm

Kinect CHOP + noise for point normals => emit particles. Using P[0-2] and life(1) as source for GEO instancing.

phpBB [video]
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Re: Abstract dance

Postby Ferrous256 » Tue Oct 18, 2016 4:22 am

I'm trying to replicate what you've done and I got as far as instancing the geometry from the kinect CHOP, but I'm curious about two things:

1.) How do you get decreasing scale as points move further from the skeleton?
2.) How do you change direction of point normals?

Any help would be greatly appreciated! :)
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Re: Abstract dance

Postby exsstas » Sat Oct 22, 2016 6:26 pm

1. Actually what happening is particle's scale decrease during its lifetime. But usually particles moves away from skeleton, so particle size correlate with distance to skeleton. Feed Particle SOP into two different SOPto CHOPs:
sopto1: scope "life" attribute rename it to "l1 l2" (or smth else) and use Math CHOP to subctract one from another
sopto2: scope "P" and rename to "tx ty tz"
merge these CHOPs and use for GEO instancing

2. Noise SOP with attribute "Point normals"

One more tip: use Kinect CHOP and combination of Select CHOPs and CHOPto SOPs to make SOP skeleton (you can use points or lines).
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Re: Abstract dance

Postby Ferrous256 » Sun Oct 23, 2016 2:03 am

Awesome! thank you so much for this! That's much easier than what I was trying to do.
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Re: Abstract dance

Postby CutMod » Sun Oct 23, 2016 2:41 am

By the way, it is possible to access multiple attributes with a single SOP to CHOP (and probably saves a little CPU time)
ParticleAttributesSOPtoCHOP.jpeg
ParticleAttributesSOPtoCHOP.jpeg (40.78 KiB) Viewed 3581 times


I usually divide particle age by particle lifetime (rather than subtract) and use that "lifeFraction" as the lookup index for what I call a "lifeCurve"
ParticleLifeCurve.jpg
ParticleLifeCurve.jpg (132.67 KiB) Viewed 3581 times
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Re: Abstract dance

Postby exsstas » Sun Oct 23, 2016 3:09 am

CutMod wrote:I usually divide particle age by particle lifetime (rather than subtract) and use that "lifeFraction" as the lookup index for what I call a "lifeCurve"

Nice idea. Thank you
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Re: Abstract dance

Postby exsstas » Sun Jan 29, 2017 10:39 am

And couple more abstract dances:

Kinect point cloud + Noise TOP - TOP to CHOP - Instancing (yes, I know that GLSL would be much more effeciant, but my GLSL knowledge = 0)
phpBB [video]


Kinect CHOP - Trail - Instancing
phpBB [video]
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Re: Abstract dance

Postby tolchxxx » Tue Aug 22, 2017 11:42 am

Hello good day, I have a kinect v2, but I still can not do that effect, I could share your project please thank you!
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Re: Abstract dance

Postby sssslamin » Wed Aug 23, 2017 8:06 pm

your sir are a beast
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Re: Abstract dance

Postby marshdunning » Thu Sep 14, 2017 6:05 am

Woa, it is awesome!
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