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newton physics simulation based on parented object

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Mike Charal
newton physics simulation based on parented object
on Apr 3, 2013 at 11:26:24 am

I've played around for the better part of a night now and I can't figure this one out.

- Animation of a robot with a dangly arm (acts like a string with a weight on the end)
- Body moves around (mostly up/down and slight rotations as if on hydraulics)
- Dangly arm ideally will automatically react to the movements of the body and swing around realistically according to the body's movements

I was fooling around with Newton 2 to achieve this (a bunch of circle solids with joints with puppet pins on the arm attached to them), but it seems like Newton isn't recognizing that the base solid is parented to the moving body.

Anyone try to achieve this before? I may be able to implement some sort of fake-ish physics simulation expressions that I'll explore today. I also don't mind hand key-framing it, but it would be cool if this worked.

Thanks for any help! Let me know if I've been too vague about this problem.

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Tudor "Ted" Jelescu
Re: newton physics simulation based on parented object
on Apr 3, 2013 at 12:59:12 pm

I suggest building the arm you want animated using Newton in a separate comp, then bring that comp in your main comp and parent that to the rest of your robot.

Tudor "Ted" Jelescu
Senior VFX Artist

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