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. 💡

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. 🚀

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! 😂