8

Collision Spawn Test 213
Add—
Click this button, and then select a Deflector
spacewarpinthescenetoaddittothelist.
By List—Click this button, and then use the Select
Deflectors dialog to add one or more space warps
to the list. The space warps must already exist in
the scene.
Remove—Highlight a deflector in the list, and then
click this button to remove it from the list. Any
removed space warps remain in the scene.
Spawn R ate A nd Amount group
Use these settings to specify when particles are
to spawn and other values related to how many
particles are spawned.
Spawn On First Collision—Particles spawn only the
first time they collide with a deflector.
Delete Parent—When on, deletes each orig inal
particle from which a new one is spawned.
Available only with the Spawn On First Collision
option.
SpawnOnEachCollisionParticles spawn on each
of multiple collisions, up to a limit specified with
the Until # parameter.
Until # The maximum number of collisions by the
parent particles that produce spawned particles.
AvailableonlywiththeSpawnOnEachCollision
option. Default=3.
When Test True For > Parent Particles is on, parent
particles test True only after colliding the number
of times specified by the Until # value.
SpawnableThepercentageofparticlesinthe
current event that will spaw n new particles. This is
determined once for each particle, when it enters
the event. However, the parameter is animatable.
Default=100.0.
For values other than 100.0, Spawnable u ses a
randomized selection process, which is affected
by the Uniqueness Seed value. For example,
w ith five parent particles, Offspring # =1, and
Spawnable=80.0, you might get any number of
spaw ned particles between two and five for each
collision. The average per spawning would be four,
however.
Offspring #—The number of new particles the
system creates from each p arent par ticle for each
spawning event. Default=1.
Variation—TheamountbywhichtheOffspring#
value can vary randomly. Default=0.0.
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 applies the
result as a percentage of the Offspring # setting.
For example, if Offspring #= 2 0 and Variation=10,
then the actual number of offspring for each
particle would be between 18 and 22.
Sync B y—Choosethetimeframetousewhen
animating Offspring # and Variation:
Absolute T ime—Any keys set for p arameters are
applied at the actual f rames for w hich they’re
set.
Particle Age—Any keys set for par ameters are
applied at the corresponding frames of each
particle’s existence.
Event D ura tion—Any keys set for parameters
are applied to each particle starting when it first
enters the event.
Restart Par ticle Age—When on, sets t he age of
each newly spawned particle at 0. When off,
each spawned particle inherits its parent’s age.
Default=on.
Speed group
Lets you specif y the behavior of spawned part icles,
as well as their speed in absolute terms or relative
to the parents speed, with optional random
variation. The direction of a spawned particle is
always in relation to that of its parent, but you can