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Tumble Weed

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Miamo KotallebiTumble Weed
by on Jun 12, 2016 at 2:03:55 pm

Hi I'm trying to get a tumble weed to 'tumble' in the wind. Problem is I can't get it to roll naturally. How does one go about rolling an irregular shaped object to roll on a service. Roll-it plugin does not work with R11-14 . I can only get a particle emitter to blow the weed across the floor plane, no rolling. Ideas?


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Brian JonesRe: Tumble Weed
by on Jun 12, 2016 at 4:49:07 pm

what version of C4D do you have (and what package)? It's very possible with Dynamics but it's also possible with xpresso


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Miamo KotallebiRe: Tumble Weed
by on Jun 12, 2016 at 5:23:57 pm

Hi, I'm running R14 Studio


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Brian JonesRe: Tumble Weed
by on Jun 12, 2016 at 7:29:24 pm
Last Edited By Brian Jones on Jun 12, 2016 at 7:36:07 pm

depending on how detailed your tumbleweed is (geometry or texture based) you might want to use a simple thing like in the example file (but fitted to your tumbleweed) as a proxy for quicker calculation. Here is a simple test with a Wind object pushing a "tumbleweed" with enough friction in the ground and tumbler to make it roll instead of slide and with Rotational Mass set low enough it can do that easily.

10187_tumbleweedtrial.c4d.zip

this is what I mean by proxy

10188_tumbleweedtrial2.c4d.zip


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Miamo KotallebiRe: Tumble Weed
by on Jun 12, 2016 at 7:39:01 pm

Thank you soo much! I'll have a go at it. I think it's exactly what I needed. So kind of you to do this.


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