Metaballs?


    Feb 17 2009 | 12:56 pm
    I'm curious if anyone has created anything resembling metaballs in jitter. I wonder if theres a way to implement them in real-time that wont be to CPU heavy. I would like to do some fluid like effects, in 3d opengl. Im also curious if anyone has done any interactive 2d fluid sim externals, I remember seeing one that was just for PC, but I cant find it anymore. I think it was called smoke or something like that...

    • Feb 17 2009 | 6:52 pm
      I don't really have the time to work this out right now, but you should be able to hack something together using jit.expr, jit.gl.isosurf, and a 3D matrix. In the meantime, try playing with the RagingSwirl recipe, and I think Nesa made an example of something similar soon after we released Jitter 1.5.
      Search the archives...
      Andrew B.
    • Feb 17 2009 | 11:04 pm
      Thanks Andrew. That's not a bad idea, I figured isosurf would be involved but I don't know much about expr. I'll look into it. I will also check out ragingswirl in a moment.
      As far as the archives, I rarely have any luck searching them.. I usually get a couple things that are very loosely related, and after several times not getting anything useful in the past I think I got turned off from the search and stopped using it. I am searching it now as per your request.
      I also really like engaging new discussions, even though there may have been other people that went over similar topics in the past, I like to see what is going on with the user community in the here and now.
      ^ - ^
      NCRIII
    • Feb 18 2009 | 1:33 am
      Hi,
      I also vote for using jit.expr to generate 3d volumes(spheres) and then send those to jit.gl.isosurf and let her figure out how to create opengl geometry:)
      one way to generate a sphere would be to start from 'circle+noise' example from jit.expr help file:
      hypot(x,y)
      and then extend it to 3d by nesting two hypots:
      hypot(x, hypot(y,z))
      below's a quick'n'dirty example.
      best, nesa
    • Feb 18 2009 | 7:14 am
      Oh man, your a pimp!! this is exactly what I was looking for. I wonder how many balls it can handle, and if I can encapsulate them in poly~ time to play!! woot!
      great job man, thanks so much, brilliant!
    • Mar 01 2013 | 11:33 pm
      hi Thanks nesa, here a gen/physics version of your metaballs :) mathieu
    • Mar 04 2013 | 7:15 am
      another banger!