8

Split Selected Test 231
Inter face
The user interface appears in the parameters panel,
ontherightsideoftheParticleViewdialog.
Test True For group
Lets you choose how to split the particle stream.
Default=Frac tion Of Particles, 50%.
Fraction O f Par ticles—Split the particle stream on
a percentage basis, specified with the R atio value.
With Ratio g reater than 0.0, whether a particular
particle is split off depends on a randomization
factor; change this with the Uniqueness Seed value.
RatioSpecify the percentage of part icles that w ill
test Tr ue. Animatable. Default=50.0.
Avai lable only w ith the Fraction Of Particles
option.
Ever y Nth Par ticle—Splits off a regular sample of
particles.
N—Specify how often to split off a particle.
Animatable. Default=3.
For example, enter 8 to split off every eighth
part icle.
Available only with the Every Nth Particle option.
First N Particles—Splits off the number of particles
specified as the N va lue (below), start i ng with the
firstparticletoentertheevent,andretainstherest.
Particles Af ter N First—Splits off all particles
starting with the first one after N particles, as
specified with the N parameter (below). All
particlesstartingwiththefirsttoentertheevent
up to N are retained in the event.
N—Specify the number of particles to split off,
with First N Particles, or to retain in the event,
with Particles After N First.
Available only with the First N Particles or the
Particles After N First option.
Per Emission Source—When on, the software
applies the N value for the options First N Particles
and Part icles After N First separately for each
emission source.
UsethisoptionwithmultipleParticleFlowsources
converging into a single Split Amount test.
Uniqueness group
The Uniqueness setting enables r andomization of
particle retention with the Fraction Of Particles
option.
Seed—Specifies a randomization value.
New—Calculates a new seed using a randomization
formula.
Split Selected Test
Particle Vie w (page 2–121)
> Click Split Selected in an
event or add Split Selected to the par ticle system and
then select it.
The Split Selected test lets you split the particle
stream based on par ticles selection status. For
information about selecting particles, see
Selection
rollout (page 2–134)
.