Making an Object Follow a Spline and Grow in Cinema 4D

Published on January 07, 2026 | Translated from Spanish
3D object traveling along a spline while increasing in size in Cinema 4D.

Make an Object Follow a Spline and Grow in Cinema 4D

Imagine you have a 3D object that must travel along a curved path while, as if by magic 🎩, it increases in size. No, it's not a circus trick, it's Cinema 4D and it can be achieved without losing your sanity. The secret is to combine the align to spline tag with a few strategic keyframes. πŸ’‘

Use Align to Spline and Animate the Scale

First, make sure your object has the align to spline tag and that you're animating the position parameter to go from 0% to 100%. Then, in the timeline, set scale keyframes at the key frames:

Smooth the Growth with Curves

So that the object doesn't grow like a balloon inflated by a maniac, enter f-curve mode and adjust the animation curves. This way you can control whether the growth starts slow and accelerates, or if you prefer a more organic effect. πŸš€

And no, it's not magic… although sometimes Cinema 4D seems to have a life of its own.

In the end, you'll discover that animating in 3D is like being a film director, but without having to deal with temperamental actors. Unless you count the objects that refuse to render! πŸ˜‚