How to store the bone position after animation, but before it will be modified by a script?

Hi guys.
I`ve made a script which makes a dynamic movement for a bone chain. It adds the inertia, gravity, friction etc to an every bone. I use it on the creature tail and it works perfectly.

Now I want to use this effect on the creature spine. But I want to use it with a characters animation which I created early. So when I move the creature in the world space, its spine keep moves with animation but slowly bend by dynamic along the direction.
But now I stuck. I only can achieve the dynamic which overrides the spine-animation. I feel like I don`t have enough knowledges on this step.

So what is my question?
Inertia and friction etc depends from a current bone position. But If I will directly add the modified position to a current bone position, then in next frame I will receive a loop. And my bone will fly away.
So I thing I need to store the fresh ONLY "after animation" bone position with no modification. Then add the dynamics to it in a LateUpdate. And in next frame again take not the resulting position but "after animation" position. Etc, again and again.

Is it achievable?

 

Someone?

 

Don't know if I understand your problem completely but have you tried getting the values at OnAnimatorMove?
Check out the unity execution order.

 

launzone, yes, I`ve tried OnAnimatorMove. I store the joint pos and rot in the variable in OnAnimatorMove, then via OnDrawGizmos draw the GismoSphere with stored variable, and in a LateUpdate I assign the modified Proxy position with dynamic (which is calculated during FixedUpdate) to a bone.
Result: in a viewport I see the Gismo sphere on the LataUpdate positon. Not on the animated.

It looks something like this:

Code (CSharp):

1. private void OnAnimatorMove()
2.     {
3.         animPos = joints[0].position;
4.     }
5.     public void OnDrawGizmos()
6.     {
7.         if (endOfChainIsLeading)
8.         {
9.             Gizmos.color = Color.red;
10.             Gizmos.DrawWireSphere(animPos, 0.4f);
11.         }
12.      
13.     }
14.  
15.     private void LateUpdate()
16. {
17. // public float Weight is used for on/off the effect via inspector
18. joints[i].position = Vector3.Lerp(joints[i].position, Proxy[i].transform.position, map(Weight, 0, 100, 0, 1));
19. }
20.