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x particles follow spline with collisions

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Michael Goldberg
x particles follow spline with collisions
on Aug 19, 2019 at 12:12:37 am

Hi All,
I'm somewhat new to using X-Particles, and ran into this situation.
I have particles following a spline (RBCs in a blood vessel), and when I use collisions to keep the particles from colliding, I get a wierd jumping. It seems the simulation is fighting between the follow spline and dynamics of the collisions. Anyone find a work around for this?

Mike



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Brian Jones
Re: x particles follow spline with collisions
on Aug 19, 2019 at 1:42:27 am

Not in a place to test but I would try to use xparticles dynamics and not mograph dynamics since they are separate systems, if it is all xparticles already it would be good to see the scene file


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Michael Goldberg
Re: x particles follow spline with collisions
on Aug 20, 2019 at 3:07:35 pm

Hi Brian,
I'm using X particles, no mograph. I've attached a simple scene. I know within C4D's dynamics there's a force setting to balance the dynamics vs the mograph motion.

Here I have particles travel along a spline, and I want them to not overlap, so I added x particles PP collision. It really looks like it's just fighting the follow spline motion. If I turn follow spline off, the collisions work correctly.

13648_simplefollowsplinewcollisions.zip

Mike



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Jim Scott
Re: x particles follow spline with collisions
on Aug 20, 2019 at 5:42:06 pm

I don't know how to correct your issue, but if you want a somewhat realistic animation of blood cells through a vein why not send the particles through a tube (sweep of ring along spline) and let them bounce off the walls?

Something like this:




13650_bloodflow.c4d.zip


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Michael Goldberg
Re: x particles follow spline with collisions
on Aug 20, 2019 at 11:12:59 pm

I never quite get the right look that way. I'll keep playing around, see what I can come up with.

Mike



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