Gradual Scaling of Mesh

Questions
1

Hello everyone,

I’m trying to achieve a growing effect for meshes. The mesh would having a starting scale, then gradually move toward a larger scale over time. I searched the documentation and forum, but I didn’t find any examples of this.

Any suggestions or recommendations would be greatly appreciated! :smiley: :+1:

2

What about using linear interpolation?

3

Hello @Raggar!

Yep, this seems like the right approach, but I’m not exactly sure how to apply it to meshes (I didn’t see any mesh scaling in the lerpToRef examples :thinking:).

For example, if I wanted to scale “meshName” from 0.4 to 0.8, would this be somewhat close?

              BABYLON.meshName.Vector3.lerptoref(BABYLON.Vector3(0.4, 0.4, 0.4), 
              BABYLON.Vector3(0.8, 0.8, 0.8), 0.5, **result??**).

I assume the 3rd value (0.5) would just control how quickly it scales. I have no idea what the final “result” value should be.

Thanks for the help!

4

You can do it like the following:


Clamping amount to 1, as everything above will start extrapolating the vector.

Another way of doing it would be:
https://playground.babylonjs.com/#ERHH6I#1
This way you don’t have to keep track of the amount, as you interpolate from the Current scaling vector. This results in a noticeable slowdown due to the distance getting smaller while having a fixed interpolation-amount.

You can even combine the two:
https://playground.babylonjs.com/#ERHH6I#2

2 Likes
5

Perfect! Thanks for taking the time to help! :smiley: :+1: