How to deform animated geometry

[monomind]

Quite new to houdini, enjoying it very much.
I see a lot of animated mesh deformation videos on instagram recently. For instance this account has many of them.
https://www.instagram.com/_estebandiacono/
I want to learn the general logic behind these animations. I can do things like voronoi fracturing an object, or filling it with a growing spaghetti line but I can only do this to static geometry. I think there is a method to make those things for dynamic geo as well. Is that a trick? I hope this is a clear question.

[Sepu]

Depending on what kind of effect you want you either use the attr interpolate or the point deform here is a simple example 

 

 

Deform_ex.hipnc

[monomind]

I love you <3

[monomind]

How can I have something like this on animated structures: 

If I do pointdeform before vdb, it needs to calculate vdb every frame, a bit slow and jittery, as new topology is generated every frame, however if I do the pointdeform after single time calculation of vdb then most of the geometry is stretched or deformed in an undesired way. What's the best approach in similar cases

 

[monomind]

Any ideas?

[yesyes]

have rest position apply deformations to that

[monomind]

then the deformed geometry is re-deformed with the anim and spheres won't fit in (or they're deformed as well, depending on where they're merged)