PDA

View Full Version : Having trouble keeping particles.. apart


duke
01-18-2009, 04:35 AM
I must be missing something hear, I just want the boulders to not be inside of each other! The scene file is Max2009.

http://www.dukecg.net/KeepApart.jpg

http://www.dukecg.net/Boulders_02.zip

JohnnyRandom
01-18-2009, 09:35 PM
Think you are better off using a reactor based sim. or TP or wait till box#2 comes out. Keep apart well works but not real well when try to cheat geometry physics. Actually seems to work better as an attractor when using -neg numbers.

Piflik
01-18-2009, 09:58 PM
You can try this plugin (http://www.maxplugins.de/r2009_files/watje/ParticleGravity_Max2009.zip) . It is a Gravity Spacewarp that makes the particles attract or repell each other.

3DMadness
01-19-2009, 12:44 PM
Keep apart is just a force, if it's not strong enough it wont be able to keep particles apart. As the other people said, it's not the best solution. I would try increasing the force and add a drag to make them stop.

JohnnyRandom
01-19-2009, 09:19 PM
I forgot to plug an awesome physics, fracture, debris plugin that would really make this an easy task: RayFire (http://www.mirvadim.com)

duke
01-20-2009, 12:22 AM
Thanks for the tips. How would I go about making the particles appear to roll on the surface, so base their offset on the particle size?

I've tried a few things and i'm having luck with keep apart+drag, however at higher counts it falls apart a bit. I'll check out the reactor option. I should note that this is for the end result and not an animation (so that they look natural, as though they've fallen down the hill and settled there) so I don't really care about HOW they get there, as long as it looks natural.

Piflik
01-20-2009, 12:44 AM
In that case I would definately go with reactor.

duke
01-20-2009, 01:10 AM
Well Reactor has done a damn fine job of it. I might use pflow to then sprinkle little ones on top so they get in the cracks and so on. Thanks for the help!

CGTalk Moderation
01-20-2009, 01:10 AM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.