The solution is simple: you must use a particle manipulator with the following function:

size = lifetimeI * size

That way, particles with a high lifetime value (that is, particles far from the emitter) will diminish in size, making a soft stream at the edge. Notice the uppercase I after the “lifetime” variable.

Another interesting effect is to have a particle that have a color variation along the stream.

Suppose you need a particle stream that is red near the emitter and orange far from the emitter. So, take the particle emitter and add a particle manipulator to it, using the following function:

green = 10 – 10 * lifetimeI

You should also adjust the color of the particle to full red.

So, as long as time passes for a particle, it will have an increase in the green value, so, it will turn yellow (you will have a stream that is a transition from red to yellow along.

 

Submitter: Magno Urbano