I'm studying the file offered by @ChameleonStyle in this answer.

I do not understand how he did it. When I open the scene, I can see two layers. The first include a particle system linked to a metaBall following a path while a camera targeting an empty turns around it. On the second layer, I can see a fluid system with two cubes, a domain and an inflow.

I am wondering about two things :

  1. Where does the metaball and the fluid domain color come from ?
  2. Why do they interact?

Thank you for your help...

  • $\begingroup$ The color is just a matcap. It seems to me that they don't interact, why do you think that? $\endgroup$
    – Omar Emara
    Mar 18, 2018 at 19:30
  • $\begingroup$ Hi Ty for your answer. When I render the final result, it seems the meatballs particle system mixes with fluids, like air bubbles. Am I wrong ? $\endgroup$
    – Philarete
    Mar 18, 2018 at 20:02
  • $\begingroup$ To me there is nothing like that. I think the guy made the two examples independent of each other. $\endgroup$
    – Omar Emara
    Mar 18, 2018 at 20:11
  • $\begingroup$ OK, when I told you I felt dummy ! But How comes the meta balls particles system seem so "fluid" and so smooth ? I tried a hundred times to do the same configuration and every time I do the same thing, my "metaballs rain" comes ugly, full of squary figures (I scale it at the same size in my "Object" configuration under Render Particles System. I even copied it and tried the same system with a cube following my path). I thought there were a link between the two systems... According to you, is his emitter a kind of strange "cube" ? By the way, I do really appreciate you being so patient ! $\endgroup$
    – Philarete
    Mar 18, 2018 at 20:26
  • $\begingroup$ The quality of the polygonization of the metaballs is controlled through the View and Render Resolution settings in the metaball properties. The lower the resolution, the better the quality. So tou get smoother result, reduce the values. $\endgroup$
    – Omar Emara
    Mar 19, 2018 at 15:36


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