Start particle at a point in time

[whs]

I want the scene to starts with some particles already existing, just like when the particle system is already ran for few seconds.

Tried this code, but 100 interval doesn't seems to work. 1s does it but the user will see the initialization stage.

var i = setInterval(function(){ threexSparks._emitter.update(0.1); }, 1); 
setTimeout(function(i){
    clearInterval(i);
}, 100, i);

[zz85]

you can pass in a custom time to the particle engine to simulate activity before rendering them. for example for ten seconds

emitter.update(10);

or you could do it with a loop, for more accurate results

for (i=0;i<100;i++) {
emitter.update(0.1
}

[whs]

That does the trick. Thanks!