Scale by density

[Anthony Martin]

Hi there,

I want to scale/change the size of a particle based on how many nearby particles there are. In my mind it feels like it should be very easy (I'm sure it is): for each particle check how many particles there are in a certain radius - use the number of particles to rescale them. So in other words if a particle is on it's lonesome it gets scaled quite small but if there are a fair few around it then leave it at about the initial particle size.

I've got mind block and can't figure this simple thing out.

Help?

Cheers,

Anthony

[Rob Chapman]

get neighbours > amount > rescale > size ? :)

[Anthony Martin]

Cheers Rob, that's quite similar to what I'm trying now. Although I'm trying it with get distance to neighbours that outputs an average distance.

[Fabricio Chamon]

like this? playing with cutoff distance also produces different results..

[Rob Chapman]

heh, I was thinking more like this

[Anthony Martin]

You guys are stars! Thanks Rob and thanks Fabricio.