Internal Cavity as Collider Body
Posted: 21 November 2021 10:57 PM   [ Ignore ]  
Total Posts:  4
Joined  2021-08-07

I’d like to simulate a long tube falling into an open-topped ovoid-shaped object and coming to rest conforming to the internal shape. I am using a rope-making plugin (HoRope) to create the tube. Simulating it falling on a plane is fine. But, if I, say, create a hemisphere, open side up, and attempt to let the rope fall into the open hemisphere it doesn’t work. I looks like the Collider Body tag uses the bounding box of the object to detect collisions not the actual polygon surface.

Is there a way to set up the collider body tag to cause the collision on the exact polygon surface (internal as well as external)?

Thanks,
Greg

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Posted: 21 November 2021 11:53 PM   [ Ignore ]   [ # 1 ]  
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Hi Greg,

Yes, there is a way. Would you please check out the Shape> Static (if the object doesn’t move)

Example:
https://www.amazon.com/clouddrive/share/mRSQ35BAJCdKxltYrKxafbsQXJWEKDzPo81WcLMWU1

Please have a look here:
https://help.maxon.net/c4d/r25/en-us/Default.htm#html/DYNRIGIDBODYTAG-RIGID_BODY_GROUP_COLLISION.html#RIGID_BODY_SHAPE

I have not installed HoRope in R25. So I hope the clones will do.

All the best

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004

Photography For C4D Artists: 200 Free Tutorials. Texture, Panorama, HDRI, Camera Projection, etc.
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Posted: 22 November 2021 08:12 AM   [ Ignore ]   [ # 2 ]  
Total Posts:  4
Joined  2021-08-07

Dr. Sassi,

Perfect. Thanks so much! Especially, for your patience. I should have found this on my own.

BTW, HoRope works fine. There is an updated version for R25. Fixes a bug and corrects syntax for Python 3.  It’s here:
https://www.patreon.com/posts/python-spoonfed-52833715

Thanks again!
Dr. Greg Bollella Ph.D. smile

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Posted: 22 November 2021 10:23 AM   [ Ignore ]   [ # 3 ]  
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Hi Dr. Greg Bollella Ph.D.,

Thanks so much for your reply and the link. I have used it only once in the past, and yes, I would have had a hard time with my previous download (Python 2 based).

My best wishes for your project.

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004

Photography For C4D Artists: 200 Free Tutorials. Texture, Panorama, HDRI, Camera Projection, etc.
https://www.youtube.com/user/DrSassiLA/playlists

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