Question [Animation C# Jobs] How to properly modify root motion in IAnimationJob.ProcessRootMotion()

IAnimationJob provides a method called "ProcessRootMotion", as its name suggests, it's supposed to be used to process animation' s root motion.

ProcessRootMotion() has AnimationStream as the parameter.
AnimationStream has properties of "rootMotionPosition" and "rootMotionRotation", but these are READ_ONLY, meaning you can't modify them.
In addition, AnimationStream provides "velocity" and "angularVelocity", which are supposed to be avatar's velocities. These are writable, but I can't figure out how to use them to modify root motion that comes with an animation.

Example 1.
The character and animation is taken from mixamo.com.
In this case, the animation is "capoeira", which has root motion that moves the character around.
Setup the character with custom animation c# job like this and modify the velocity and angular velocity to zero. The expected result would be that the character stops moving around.
But character's trajectory changes to a straight line, still moving.

Original animation:


Set velocity and angularVelocity to zero:

Code (CSharp):

1.         public void ProcessRootMotion(AnimationStream stream)
2.         {
3.             stream.velocity = Vector3.zero;
4.             stream.angularVelocity = Vector3.zero;
5.         }

 

Original animation gif:

 

Set velocity and angularVelocity to zero:

 

I'm trying to make an Animation Rigging constraint for full-body tracking and have the same issue with trying to modify the root motion in

Code (CSharp):

1. ProcessRootMotion(AnimationStream stream)

Any progress on this @superkerokero?

 

@dyno_sam
It seems that you can't modify/overwrite the root motion baked into animations inside "ProcessRootMotion()". This function only allows you to add some custom processings to the baked root motion, such as adding a vector to the already existing velocity.

In order to modify the root motion itself, you have to use OnAnimatorMove, which is a monobehaviour message that only works with an Animator component attached to the same gameobject. The baked root motion can be accessed through Animator.deltaPosition and Animator.deltaRotation, both values are modifiable.