Repeling particles — Questions about spherical field.

[Darby Edelen]

[André Macedo] “1)
It seems i need to find exactly where my particles are in positioned in Z so the force field takes effect in my particles. Do you know why?

2)
Also, it seems i can only use 1 spherical field per emiter. Is this true?

3)
Apparently, the force field has a direct relation only with its emiter. But it the particles of the other emiter, will not be affected! How can i tell particular so that the the same spherical field affect both particle emitters?”

1) Sort of, the spherical field has a 3D position and radius. Particles outside of that radius will not be affected by it. You can use ‘Visualize Fields’ to see a representation of your Spherical Field. This should work in Top/Side/Custom Views as well.

2) This is true. That’s just an inherent limitation in Particular. No way around it.

3) You cannot.

Trapcode’s Form plugin does allow you to use 2 Spherical Fields. If you can manage to get the effect you’re after with Form then I’d recommend using that instead. Unfortunately it’s not clear whether that would be a total solution for your goal. Can you be more descriptive about what you’re trying to achieve?

Darby Edelen

[André Macedo]

Hi Darbi, thank you for responding –

Ok, 1 spherical field per emiter.
and, Trapcode Form would allow me to use 2 spherical fields per emitter.

– – – – –

Let me explain you better what my project is about. Its kind of a simple video mapping.
I have a white face mask, hanged on a wall i want to beam to. I am producing the video in after effect, and using particular.
I vectorized the outline of the mask + both eyes, resulting in 3 closed vector strokes.
I am already emiting particles (little dots) from both eyes, through layer emiter.
I want these particles to spread along the whole face, with the exception of 2 areas of the mask where i didnt want my particles to go.
These 2 areas were too drawn in vector strokes, nothing very sketchy..

And this is what ive so far.
So, testing the spherical fields, i have came up with 2 issues to resolve:

A)
Tell these 2 areas, (ideally) custom bezier or bitmap shapes, wich right now are circular spherical fields to repel the particles emited.

B)
Tell the outline stroke of my mask to repel the particles that — for this, i guess my outline stroke would have to be a Spherical Field itself.

– – – – – – – –

If theres the need for me to change to FORM:
– Do i need to forget about particular, and re-asign my emiters ?
– If i can still use particular, can my 2 existent emiters, and “connect” them to Form Spherical fields?

Note: i have form 2.0.3, if i changed would i be able to do this with this version?

Thank you very much!!
André Macedo