2009

■ Particle Age Tests the current age of each particle in frames. This is the
default test type.
■ Event Age Tests the current duration of the current event in frames.
Test True if Particle Value Lets you specify whether the test passes particles
on to the next event if the age test succeeds or fails. Default=Is Greater Than
Test Value
By default, Age Test returns True if the value tested for exceeds the Test Value
quantity, but you can alternatively choose Is Less Than Test Value. For example,
if you use the Absolute Age test type and set Test Value=60 and Variation=0,
and choose Is Less Than Test Value, then particles will move to the next event
only until frame 60. After frame 60, any remaining particles stay in the current
event unless another test returns True.
Test Value The specific frame number, particle age (in frames), or event
duration (in frames) to test for. Default=30.
This value cannot be animated.
Variation The number of frames by which the value tested for can vary
randomly. Default=5.
This value cannot be animated.
To obtain the actual test value for each particle, the system multiplies the
Variation value by a random number between -1.0 and 1.0, and then adds the
result to the Test Value setting. For example, if Test Value=300 and
Variation=10, then tested value for each particle would be between 290 and
310.
Subframe Sampling Turning this on helps avoid particle "puffing" when
passing particles to the next event by testing the time at a much higher
subframe resolution (that is, throughout each frame), rather than using the
relatively coarse frame resolution. Default=on.
"Puffing" is the effect of creating separate "puffs" or clusters of particles, rather
than a continuous stream.
Turn off Subframe Sampling to cause the test to be executed exactly at frame
times.
Uniqueness group
The Uniqueness setting enables randomization of the test value variation.
Seed Specifies a randomization value.
New Calculates a new seed using a randomization formula.
Particle Flow | 2959