GAS Particle To Field DOP operator question.

[bareja]

Hi folks i have question about GAS Solver and GAS Particle To Field dop operators.

I don't know how does it work(Particle to field ), i have a problem to undestand how particle attribute being copied from points to field.

I've created simple example where in SOPs i created two groups of points, first with velocity value=0 and second group with velocity value!=0.

Then i copy points from SOPs to DOPs by SOP geometry operator and call data as 'particles', so my points have already attribute v with velocity inside DOPs.

Now i wanna copy attribute from 'particles' data(v) to Vector Field. And it gives me strange resoults, because all particles have the same velocity,

but when i switch in GAS Advect 'Use Geometry Velocity' everything works fine. Could somebody tell me what i do wrong ? How to set up particle to field operator ?

It looks like that averaged velocity form all points is being copied to field and set velocity on every voxel to averaged value.

Please help,

Scene file:

velocity.hip

Edited March 18, 2009 by bareja