Particle data in Octane Material Override?

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Particle data in Octane Material Override?

Postby vantrum » Sat Mar 31, 2018 8:59 pm

vantrum Sat Mar 31, 2018 8:59 pm
My goal is to utilize particle attributes in my Octane material override - but I'm getting stuck. How would I approach using, say, the age of a particle to determine the opacity of the material? Or to change the color of the material as the particle ages? Thanks for the help!
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Re: Particle data in Octane Material Override?

Postby face_off » Tue Apr 03, 2018 10:48 am

face_off Tue Apr 03, 2018 10:48 am
I don't think you could use attributes such as the Particle Age to drive an input to an Octane Override - since the Octane Override is for a "Material", and all particles of a given replicators would use the same Material.

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Re: Particle data in Octane Material Override?

Postby Hesekiel2517 » Sat Sep 15, 2018 10:15 am

Hesekiel2517 Sat Sep 15, 2018 10:15 am
Hey Paul,

this seems to work in the C4D Plugin (https://docs.otoy.com/Cinema4DH/C4DPlug ... eColor.htm). This would be really useful to have in modo.

Btw. MotionBlur for Replicators would be great too. Maybe i'm doing something wrong, but i can't get it to work. In the Demoforum you said this is going to be implemented (viewtopic.php?f=25&t=56680&p=345898#p345898). Is there a way to get particles with motionblur?

(also Replicators don't update when scrubbing the timeline. Is it possible to change this?)

Thanks in Advance!
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Re: Particle data in Octane Material Override?

Postby face_off » Sat Sep 15, 2018 11:49 am

face_off Sat Sep 15, 2018 11:49 am
also Replicators don't update when scrubbing the timeline. Is it possible to change this?
Have you tried turning on the Render Cache? It may already support this.

Paul
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Re: Particle data in Octane Material Override?

Postby Hesekiel2517 » Sat Sep 15, 2018 12:02 pm

Hesekiel2517 Sat Sep 15, 2018 12:02 pm
Yes, i tried that, but there is no difference
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Re: Particle data in Octane Material Override?

Postby face_off » Wed Sep 19, 2018 1:44 am

face_off Wed Sep 19, 2018 1:44 am
Can you send me a simple scene LXO which shows this problem and I will take a closer look.

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Re: Particle data in Octane Material Override?

Postby Hesekiel2517 » Tue Apr 09, 2019 10:03 am

Hesekiel2517 Tue Apr 09, 2019 10:03 am
Might it be possible to store Particle data in a vertexmap to control color of the particles in Octane?
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Re: Particle data in Octane Material Override?

Postby face_off » Tue Apr 09, 2019 10:20 am

face_off Tue Apr 09, 2019 10:20 am
Hesekiel2517 wrote:Might it be possible to store Particle data in a vertexmap to control color of the particles in Octane?
I don't know. Someone with deeper Modo knowledge would need to answer this one.

Paul
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Re: Particle data in Octane Material Override?

Postby Hesekiel2517 » Mon Apr 15, 2019 7:15 am

Hesekiel2517 Mon Apr 15, 2019 7:15 am
Particle_Vertexmap.JPG


If the Particle Simulation is fed into a mergemesh Node there are some vertexmaps shown. Do you have any idea how to use them?
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Re: Particle data in Octane Material Override?

Postby face_off » Wed Apr 17, 2019 10:58 am

face_off Wed Apr 17, 2019 10:58 am
If the Particle Simulation is fed into a mergemesh Node there are some vertexmaps shown. Do you have any idea how to use them?
I'm sorry, I don't know the answer to this.

Paul
Win7/Win10/Mavericks/Mint 17 - GTX550Ti/GT640M
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