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I have created waterdrop on the monkey, but I do not know how to make water drop animation on the surface. It is similar to water drop from a icing coke bottle.

I tried to change seed of Distribute Points on Faces, but it only changes the location of waterdrop randomly. I want waterdrop following gravity.

My blender file: https://blend-exchange.com/b/K3W6ZYLN

enter image description here

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    $\begingroup$ Not sure exactly what you are going for. And not to answer the question, but I'd urge you to use particle systems instead for a simple rain effect. $\endgroup$
    – Benus
    Jan 13, 2022 at 4:01
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    $\begingroup$ @Benus why? Particle simulations require more computer power, GeoNodes can provide a quicker, simple result if accuracy is not an issue. $\endgroup$
    – Luciano
    Jan 13, 2022 at 10:17
  • $\begingroup$ to be fair, there's a nice tutorial on raindrops animation using Material Nodes if you're interested youtu.be/ETld_S5QsSU $\endgroup$
    – Luciano
    Jan 14, 2022 at 11:01
  • $\begingroup$ please check an answer as correct (click on checkmark left to the answer) if it helped you $\endgroup$
    – Chris
    Jan 21, 2022 at 8:45

1 Answer 1

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This setup creates droplets on cylindrical surface. I'm not sure how to do on other surfaces. May be using ray cast node you can project this on different surface.

enter image description here

enter image description here

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  • $\begingroup$ However, using raycast will not make the speed of the droplet realistic (depending on the topology it might look quite wrong). And since goemetry nodes are "stateless" in the sense they are run independently and don't communicate between frames. This is why a simulation is probably better, but your solution, I think, is as good as it get in geonodes. $\endgroup$ Jan 14, 2022 at 10:27

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