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View Full Version : A Complex Particle Problem.

TapioKa
06-30-2003, 04:49 PM
Hello everyone,

I have a scenario that I can't quite figure out, and was curious if anyone had a solution.

I want to have either a particle system, or a mass of points, vertices (does not matter too much what it is)

However, I need them to react to other points as they are introduced.

I want each point or particle to react to the other so that they are always equidistant from each other.

PLUS, I want to have a inward force, like spherical gravity, so the mass of particles/points always stays together in a spherical mass.

Perhaps this is something meant for Reactor? Not sure. Am I right that particles cannot do interparticle collision? If it could that might solve my problem.

Any suggestions are always appreciated
edaddy
06-30-2003, 05:16 PM
particles in the same system can have interparticle collision (particle modifier/rotation and collision rollout) , but as far as i know 2 different systems can't. And about the particles always being of 'equidistant'... if they are, then you would have no need for interparticle collision right ?!
BrandonD
06-30-2003, 07:08 PM
What you're talking about sounds more like fluid dynamics. What you're describing can be done to a certain degree with Particle Flow using the Keep Apart operator. The trick would be to keep the distances equidistant.
TapioKa
06-30-2003, 07:13 PM
I don't know about you, but for me interparticle collision has NEVER worked properly in Max. Doesn't the interparticle collision work by particle center and not by particle size diameter?

and yes you are right, if I could get that to work, I wouldn't have to worry about them being equidistant. :)

In Maya, I remember there being a setting for particles that can create a fake collision simulation by giving a value for the distance in which particles cannot touch each other.

Does anyone know if the new Particle Flow extension has this?
TapioKa
06-30-2003, 07:18 PM
Must have posted at the same time!

Thanks Brandon, somehow I knew you were going to offer a response. :)

Yes, I want to badly play with Particle flow but I'm still using R4.2
but I'm glad to know that feature exists with PF.

Does the keep apart operator work on a PerParticle basis? Can a distance be defined?

Thanks.
edaddy
06-30-2003, 08:17 PM
true, interparticle collision does WORK, but as you said it is based on a particle's center point rather than actual size - however if your attempting to create sort type of fluid then that should still be sufficient
Stroker
06-30-2003, 08:58 PM
I'm curious.
Will Character Studio's Crowd work for this?
Or some other sort of crowd simulation?
Bomber
07-01-2003, 02:27 PM
Why don't you use particle-Array?

It works for me!
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