Three.js Progress animation

Questions
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1

Hello!

I have transformation animation from one object to two object
and i need to create animation not to start on scroll, but to make the animation process on scroll.

Also that it would be 2 way from circle to cube and from cube to circle if you scroll forward and backward.

2

Something related. An attempt with appearance, based on scroll

3

Yes, but I have two elements, not one, and with this approach it turns out that I give one element and the second one is not transformed into a form.

4

That’s what I’m getting at, it’s gonna take some finesse :smiling_face_with_tear: