hello,

i try to run a flip simulation.
One object emit particle ….
the object is called inside the popsolver node with a source popsop.
The sim could be better if i drive the particles velocity and BIRTH with the velocity of my object but I can't figure how to do it.
For the moment I use the inherit velocity from the source node and that all …

Any help and link is welcome.

++
Vincent

hey,

so if you don't already have a velocity attribute you can easily create that with the trail SOP (compute velocity).
Then in your source POP you can either tell the particles to use inherited velocity or you create your own Velocity POP and call your v attribute with a point expression. Obviously if you want your particles the objects average velocity you have to average your v attribute before you send it into pops, you could do that with a attribute promote SOP for example.

does that help you?

cheers,

Manu

Hi Manu,

thx for your reply.
The fact is I am totally confused between attributes, variables and expressions.
I have already a velocity attribute but I don't know the way to use it in an expression to drive the birth to the particles.
I tried to use somethin like $V but, obviously, it was all wrong !

pointavg expression should to the job …

so yes : your post helped me

++
Vincent