Generate custom sample set

[Pancho]

I'm a bit lost here.

While the "Generate Sample Set" node only emits once (if you set it up like this) I seem to miss the point of how I'm able to do this with the "Add point" node by itself.

How do I set up a particle emitter which uses custom input (point location), but emits only once at the start frame and then not any more?

Cheers
Thomas

[EricTRocks]

Get a Current Frame node and an if node. Plug the Add Point node into the True port.

[Pancho]

That's something I tried. But I didn't succeed with frame 0, only with frame one and above. Can't I emit on frame 0 or did I set something up in the wrong way?

[Hirazi Blue]

Are you trying this on a simulated ICE Tree? If so, you could try "Execute Once"...
And yes I think emitting in a simulated tree normally starts at frame 1, but I'm not 100% sure.

edit: from the docs...

Note that ICE particles are actually emitted only starting the second frame of the simulation frame range.

(Quoted from here)

[EricTRocks]

Frame calculations start on the first frame it can calculate stuff for which is not frame 0. If you want frame 0 then you need to set your simulation environment to start at -1.

[Pancho]

Thanks guys!!!

Yes, simulated ice tree.

[Mr.Core]

Build a simple trigger. By default all custom attributes inits with 0 ( identity in case of matrices ), so you can use it and execute anything independently of your first frame value

[EricTRocks]

Great tip!

[iamVFX]

As an option

[Pancho]

Very cool!