Quaternion Rotation Animation

[cyrilrueg]

Hello, I have an animation that I'd like to change the velocity dynamism, slower, faster, etc. With the Quaternion Rotation tool, my curves remain linear. Is there a way to add momentum, like Time Remapping in After Effects?

https://imgur.com/BBXJxwq

[Dr. Sassi]

Hi cyrilrueg,

The main question is, what are you trying to solve with the Quaternion function?

In other words, you experienced a Gimbal Lock at one point, and there was no other way to solve it? I would try to avoid this function as much as possible. Often, one or two keyframes between the existing helps or split the animation with a Null Hierarchy, where the rotation is split up to avoid trouble (Gimbal Lock)

The Quaternion function tries to find the shortest path. Without a scene file (images and screenshots captured do not help as much as a file with all the data), changing anything might change the result. Without a file, it is hard to tell what you get.

I suggest taking the object with the animation, making a copy, and using it to "Main Menu> Animate> Add Motion Clip."
When this is done, click on the Motion Clip Tag that appeared on that object, Tag> Open in Timeline.

Click on the Animation clip, like a clip in a video Editor. In the Attribute Manager>Advanced, you can set a curve for the timing.

In the file below, I have set up the initial animation [green], then applied the Quaternion function to it [red], which created the needed jumps in the F-Curves.
The version [blue] works with an Animation clip, allowing timing, which affects all PSR parameters here.

There is also a Reduced Modification Curve, but I encourage you to avoid this with active Quarternion use.

More about:
https://help.maxon.net/c4d/2024/en-us/Default.htm#html/ONULL-ID_BASEOBJECT_GROUP1.html#ID_BASEOBJECT_QUATERNION_ROTATION_INTERPOLATION

My best wishes

[cyrilrueg]

Hi @Dr-Sassi , thanks for the answer, it really helps me a lot!

Thank you and have a nice day

[Dr. Sassi]

You're very welcome, cyrilrueg.

Thank you for taking the time.

I wish you success with your project.