2009

10 Add a Send Out test at the end of Event 02.
11 Create a new event using an Age Test. Click the Age Test to display its
parameters, and then set the following:
■ Event Age
■ Test Value=1
■ Variation=0
12 Wire the Send Out test in Event 02 to Event 03.
13 Wire the Age Test in Event 03 to Event 02.
14 Play the animation.
All the particles slow down simultaneously and eventually come to a
stop.
Here's how it works: As each particle enters Event 02, its speed is set to
the current Speed value in the Speed operator. Particle Flow then sends
the particle immediately to Event 03, where it sits for one frame. Event
03 then returns the particle to Event 02, whose Speed value is now lower.
Particle Flow perceives the returned particle as newly entering the event,
so it changes its speed to the current Speed value. Thus, the particles
continually return to Event 02 one frame later than before, and are
assigned a progressively lower speed.
If you wanted the particles to do something else after they stop, you could
add a Speed Test to Event 02, above the Send Out test, set Test True If
Particle Value to Is Less Than Test Value, and set Test Value to a very low
value, such as 0.01. Then wire the Speed Test to a different event.
Particle Flow | 2873