A geometry nodes setup to simulate raindrops falling on object and forming dripping trails.

How to use: append the "Geonodes Raindrops" node tree (or use the asset browser). Apply it to an emitter object (ideally a plane resized to cover the objects you want to drip on - don't forget to apply the scale). Place the objects you want the raindrops to hit in a collection, and select that collection in the first option in the modifier ("Collection").

Options:

• Collection: the collection containing the objects you want the raindrops to hit.
• Density: the amount of raindrops that will spawn on the emitter object each frame.
• Mean raindrop radius: the mean size (radius) of the generated raindrops.
• Max trail radius: the thickness of the raindrop trails at their thickest end.
• Initial velocity: Normal the raindrops are spawned on the emitter with 0 initial velocity, and then start falling by gravity. If you want the drops tostart out with a predetermined initial velocity, set it here.
• Wind velocity: will simulate wind, and affects both falling raindrops and drip trails.
• Drop material: the shader material you want to set for the raindrops and trails. A default raindrop material is included