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monomind

How to deform animated geometry

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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.

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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

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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

 

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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)

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