>From the top of my head:
Emit from surface... and then connected to the onEmission port: "test inside
null" (or similar) -> "not" -> "delete point"
That way you are emitting from the whole surface, but if the particle is not
inside the null at emissiontime it gets deleted.
Or something along those lines...
cheers,
Thomas
> Morten Bartholdy <[email protected]> hat am 15. November 2016 um 13:44
> geschrieben:
>
>
> I am looking at different methods for initializing particle emmmisions from
> various geometry. Ideally I would like to move a Null along a surface and the
> part of the surface which is inside the Null (with a volumic icon) starts
> emitting particles, and stops when the null moves on away.
>
> Momentum has a good way to do this but gets slow due to the collisions and
> with an ordinary particle sim I have gotten reasonable results with the Emit
> Splash from Surface Collision compound, but it is a bit quirky with its
> calculation of velocity.
>
> So if I have a surface and just want it to emit particles from the part of the
> surface which is inside a null, how would I do that?
>
> Thanks
> Morten
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