Ncloth and Active rigid bodies

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# 1 19-03-2013 , 11:40 AM

Registered User
Join Date: Sep 2005

Location: Netherlands

Posts: 130

Hi everyone,

Quick question for you guys out there. Is there a way to make active rigid bodies influence and be influenced by a Ncloth object. I am working on a table tennis scene, and want the ball (active rigid body) to bounce of a Ncloth Net

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# 2 19-03-2013 , 01:13 PM

EduSciVis-er
Join Date: Dec 2005

Location: Toronto

Posts: 3,374

I don't think the two dynamics systems play well together. Switch the ball over into a nucleus type of dynamics.

-stwert

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# 3 19-03-2013 , 03:29 PM

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Join Date: Sep 2005

Location: Netherlands

Posts: 130

I tried making it a ncloth mesh with a high rigidity, and even pressurized it, but I just can't get it to bounce like a normal tabletennis ball would, I seem to be losing way too much energy at the moment of impact, any tips?

Video can be seen here:
TableTennis ball not bouncing - YouTube

Edit:
Added video

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Last edited by SilverBlood; 19-03-2013 at 03:42 PM.

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# 4 19-03-2013 , 04:56 PM

EduSciVis-er
Join Date: Dec 2005

Location: Toronto

Posts: 3,374

Try increasing the bounce, check here for lots of attributes: https://www.joelstutz.com/nCloth.html
You could also try reducing the damp or drag if there is any.

-stwert

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# 5 20-03-2013 , 12:57 AM

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Join Date: Feb 2013

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any chance you can post a sample scene, so we can test what you are trying to acheive.

thanks

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# 6 23-01-2014 , 11:06 PM

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Join Date: Jan 2014

Posts: 1

Have you tried creating an n-particle (ball) and instancing the geometry to it?

I've attached a file that does this, I've adjusted the collision thickness on the n-particle to be roughly that of the hidden ball geometry that's being instanced.

If you need to also compute spin the rotation of the ball, i believe there are some tricks that can be done in the per particle Array attributes although I can't recall how to do it off the top of my head.

Attached Files

ballCloth.zip (11.0 KB, 298 views)

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# 7 26-01-2014 , 10:28 PM

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Join Date: Sep 2005

Location: Netherlands

Posts: 130

I managed to get the interaction that I am seeking with 2 ncloth both set to be quite rigid, altho I cannot seem to get it to work with a Passive collider tho....

Tabletennisball bouncing correctly - YouTube

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