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Activity Forums Adobe After Effects Custom particles and object collision

  • Custom particles and object collision

    Posted by Stu Pond on April 6, 2005 at 11:10 am

    I have to create an animation showing the filtration of tiny particles from a liquid using a microfilter. This would involve the filter moving upwards inside a vessel, collecting the larger particles whilst leaving the smaller ones in suspension.

    I would like to do this in AE, and was wondering if anyone had any idea of the best way to do this. I cannot see a way using the built in tools (AE 6.5), but I have never used the particles for this sort of thing. Is collision detection possible in AE 6.5? I know particles can react to walls etc, but what about each other?

    Would it be better to do this in Cinema 4D?

    Matt Hall replied 19 years, 10 months ago 2 Members · 4 Replies
  • 4 Replies
  • Matt Hall

    April 6, 2005 at 1:36 pm

    The approach I would try in AE would be using Trapcode’s Particular. You would make two layers of particular. The first would be for the large particles, the second for the small. Make the layer of large particles use the physics model “bounce”. Then adjust the setting so the particles stick to the filter layer ( which would be a 3D layer). The smaller particles should use the physics model “air”. I would use a displacement field that mimics the motion of the filter, so when it passes through the small particles they look like they are being disturbed by the filter. It’s a little complicated, but i think it could work.

    As for collision detection, in particular the particles can collide with a layer (in the “bounce” mode), but not with each other. I don’t think any of the AE particle generators can do that.

    Matt Hall
    Director, Digital Post
    CCG MetaMedia, Inc.

  • Stu Pond

    April 6, 2005 at 3:53 pm

    Thanks Mike.

    I’ll have to try and replicate this using the existing plug-ins as third-party extras are not budgeted for (a poor freelancer pleading poverty!), but I think it may be possible.

    Stu

  • Stu Pond

    April 6, 2005 at 3:57 pm

    . . . or Matt even!

    Sincere apologies for typing the wrong name.

    Tired and overworked to boot!

  • Matt Hall

    April 6, 2005 at 4:13 pm

    No problem. I’m posting on the cow to avoid doing my work…

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