particular: random rotation at birth?

[Mylenium]

Does anyone know if it's possible using custom particles in Particular to specify a random birth rotation for the particles? I've tried all the settings I know, but can't find anything that does it.

Thanks,

-Steve

Nope. Not possible. You could however use a custom particle in a pre-comp and animate its rotation. Using one of the Split Clip and Random methods you can pretty much get what you want, assuming the particle is also supposed to rotate throughout the entire lifecycle.

Mylenium

[monovich]

thanks for the reply. I ended up using the split clip and got a decent effect.

I wonder why a random birth rotation isn't a feature? Seems like it should be there...

[graymachine]

I must be misunderstanding the question.

The Particle rotation is the rotation at the time of the particle birth. So, if you use something like:

random(0,360)


Each particle (or, every frame that is) will have a unique rotation angle when the particle is born.

Yes?

[monovich]

mmm. not quite I don't think.

the rotation value is the current rotation of all the particles, not the rotation at time of birth. Or if it is that, then it wasn't working that way when emitting layers. Changing the rotation value changed the rotation of all particles no matter when they were born.

-sf

[graymachine]

mmm. not quite I don't think.

the rotation value is the current rotation of all the particles, not the rotation at time of birth. Or if it is that, then it wasn't working that way when emitting layers. Changing the rotation value changed the rotation of all particles no matter when they were born.

-sf

If you change the rotation value without it being keyframed (or without an expression), yes.. you'd see all of the particles rotate as the rotation at the time of birth changes for all particles.

When I plug that expression in (or even keyframe it from 0 to 360), each particle has a different start angle. That has my always been my experience with it. It's weird that we are getting two different results.

[monovich]

hmm. we tried keyframing it. I wonder if it had something to do with using a layer grid emitter and using "Layer Sampling: Current Time" vs. "Particle Birth Time"

I'll definitely go back and try what you suggested and see if I can get it to work, even though that project is done now.

thanks again!

-S

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