I am just coming to grips with the particle system in Blender and it is not behaving the way I expect it to.
My goal is to have an emitter slowly emitting particles at a roughly constant rate for about 3-5 minutes (i.e. a rain-style background effect).
Here is my understanding of particles:
You set the duration for which particles will be emitted. Call this time T seconds, obviously expressed as a frame interval (i.e. frame a till frame b).
You set the number of particles to be emittted total (call it N)
Particles should be emitted at a rate of N / T particles per second for the duration you have told the emitter to emmit, and then should suddenly stop being emitted.
Is this correct ?
In my scene, the emitter is blowing all of its particles in about 1/5 the alotted time then not producing any more. I can turn up the number of particles so they last longer but this obviously ruins the effect.
I have tried to set up overlapping emitters just to get a steady stream but these are not starting at the frame they are supposed to.
Is there some quirk / bug I should know about or do I just have it all wrong ?
Thanks a lot in advance for any help as this is really starting to drive me nuts.