Locking a plane

Is there a recommended method of locking a plane for specific physics bodies? This would be equivalent to
RigidbodyConstraints.FreezePositionY.

In my project, I have bodies I want to lock to translation.y=0. I've tried forcing translation.y=0 and velocity.y=0 in a job, which seems to work most of the time, except occasionally the translation/rotation/localtoworld values will suddenly NaN and everything goes wrong.

Thanks!

 

It turns out that the examples demonstrate how to achieve this, via the LimitDOFJoint. Copy/pasting the joint, base joint, and conversion system (with some minor commenting) were enough.

https://github.com/Unity-Technologi...er/UnityPhysicsSamples/Assets/Demos/4. Joints