Copy trajectories between objects in Cinema 4D without original splines

Published on January 06, 2026 | Translated from Spanish
Cinema 4D window showing the F-Curve editor with trajectory animation being copied between two objects.

Copying Trajectories Between Objects in Cinema 4D Without Original Splines

Have you ever wanted to copy a trajectory animation in Cinema 4D but discovered that the original spline vanished as if by magic? 🎩 Don't worry, there's still hope. With a bit of digital magic (and some technical tricks), you can clone that perfect movement without needing to start from scratch. ✨

The Foolproof Method: F-Curves to the Rescue

When the original spline has disappeared, your best ally is the Curve Editor:

  1. Select the object with the desired animation
  2. Open the F-Curves editor (Shift+F3)
  3. Copy all position/rotation tracks
  4. Paste them onto the target object

Voilà! Your second object now dances just like the first. 💃 Although if they were in different starting positions, you might need some manual adjustments.

In Cinema 4D, an animator without their splines is like a magician without their wand: they can perform tricks, but with more effort.

Advanced Techniques for Stubborn Cases

For more complex situations:

Common Mistakes (and How to Avoid Them)

Don't let it happen to you like it does to 90% of 3D artists:

With these tricks, you'll be able to replicate any trajectory, even those you made months ago and swore you'd never need to modify. And if all else fails, there's always the option to say it was an "experimental artistic style". 🎨

Ironic Bonus: The funniest thing is when you spend hours perfectly copying trajectories... only to realize the client wanted the movement exactly in reverse. The 3D universe has a peculiar sense of humor! 😂