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Spin force for RBD objects


violalyu

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Hi Houdini friends,

Sorry to bother you three times in a day... I'm still having issues with the simulation of leaves on the ground. I can't use POP for simulation because these leaves are in foreground and they'll hit the ground and stay eventually. However it seems wrangle torque or angular velocity on the packed points won't work, these leaves are not spinning around their own origin. Is there any way to fix this? I have the files attached that may better explain. Thanks a lot!!!

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6 minutes ago, violalyu said:

Hi Houdini friends,

Sorry to bother you three times in a day... I'm still having issues with the simulation of leaves on the ground. I can't use POP for simulation because these leaves are in foreground and they'll hit the ground and stay eventually. However it seems wrangle torque or angular velocity on the packed points won't work, these leaves are not spinning around their own origin. Is there any way to fix this? I have the files attached that may better explain. Thanks a lot!!!

 

carLeaf.tar.gz

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You can setup your rotational forces in sops and your rbd packed objects inherit this velocity as shown here:

http://www.tokeru.com/cgwiki/index.php?title=HoudiniDops#RBD_and_packed_prims

OR you can use pop nodes for creating spin, such as pop torque. You can put it in the third input on the rbd solver.

http://forums.odforce.net/topic/18797-how-to-rotate-particles-in-houdini-13-dops/

 

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1 hour ago, rbowden said:

You can setup your rotational forces in sops and your rbd packed objects inherit this velocity as shown here:

http://www.tokeru.com/cgwiki/index.php?title=HoudiniDops#RBD_and_packed_prims

OR you can use pop nodes for creating spin, such as pop torque. You can put it in the third input on the rbd solver.

http://forums.odforce.net/topic/18797-how-to-rotate-particles-in-houdini-13-dops/

 

Thanks Ryan, I'll look into it!

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  • 11 months later...

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