[Stephen Turcotte]

Thanks for the input, it’s always nice to have multiple ways to solve a problem.

[Stephen Turcotte]

Well, if I used two particle groups- I’m guessing one would be set as ‘sticky’ particles and the other as more ‘rigid body’ particles. I’ve attached a .mov file illustrating why I think one particle group is needed- so that the rig can travel across a room and interact with various objects, without having different particle groups being switched on and off depending on where the emitter is traveling.

I actually found a solution- video below.

I used a single emitter with a rigid body tag along with an attractor for the sphere. Much simpler than what I was thinking, and it works pretty well. I suppose you could use 2 emitters, depending on the look you’re going for, but I didn’t really want too many sprinkles falling off once they stuck (the particles falling on top of other dynamic particles)

Let me know if you have any other ideas/ thanks

tp and dynamics

[Stephen Turcotte]

Got it. I had the wrong geometry in the SurfacePosition node. I replaced the previously existing sphere with my Correction deformer.

5341_eventstest4.c4d.zip

Thanks for looking into it Brian.

[Stephen Turcotte]

Yes. I’m messing around with Pborn right now, and getting sort of close.

[Stephen Turcotte]

Good point, and good to know. Thanks for the sample file- very helpful!

[Stephen Turcotte]

Here’s the scene file with my setup.

4962_worldmaptest.c4d.zip

[Stephen Turcotte]

Hi Brian,

Each new sphere does have a different number of paths emitting from the center. They only need to land in a general area, nothing too exact. Maybe animating along a spline would be a bit quicker rather than trying to find a work around. I guess my question is whether it is possible to create one Xpresso setup, like I have, and retain the ability to duplicate it without affecting the original. Every time i duplicate the original rig, the parameters seem to be thrown off.

[Stephen Turcotte]

Hi Seth,

Great tutorial, thanks for pointing me in that direction. From that I’ve come up with a pretty straight forward solution using PSurface Position and PPosition Follow to gather the “sticky” sprinkles on the frosting. And another dynamic group of TP that bounce off occasionally and interact with the floor.

Good call and thanks again!

[Stephen Turcotte]

I’m only using the friction parameter within PDeflector, but turns out it wasn’t really doing much for my particular situation. The problem is within dynamics, I believe, as the sprinkles that have already settled are effected by the incoming falling sprinkles with rigid body tags.

There must be a way to have two separate particle groups, one that hit the cupcake frosting, and another group that totally miss the cupcake.

[Stephen Turcotte]

I exported a .TIFF sequence from AE with RGB + Alpha settings. I’ll have to try it a few other ways.