2009

if you set Sync By to Particle Age, and set Speed Variation keys at frames 0
and 30, then the software will animate the speed variation for each particle
born while the event is active between its birth and its 30th frame of existence.
Alternatively, if you set Sync By to Absolute Time, the speed variation is
animated from frame 0 to frame 30 of the animation, even if no particles are
in the event at that time. Or, if you set Sync By to Event Duration, the speed
variation animation is applied to each particle as of the time that it enters the
event. For further information, see
Animation Offset Keying group on page
2870.
Sync By Choose the time frame for applying animated parameters:
■ Absolute Time Any keys set for parameters are applied at the actual frames
for which they're set.
■ Particle Age Any keys set for parameters are applied at the corresponding
frames of each particle's existence.
■ Event Duration Any keys set for parameters are applied to each particle
relative to the frame at which it first enters the event.
Icon Animation group
The software can begin applying animation of the Speed By Icon operator
icon to all particles as of the start frame of the animation or the first frame of
the current event, or to each particle based on its age. For an explanation, see
Animation Offset Keying group on page 2870.
Sync By Choose the time frame for applying animation of the icon to the
particles:
■ Absolute Time Any keys set for icon motion are applied at the actual
frames for which they're set.
■ Particle Age Any keys set for icon motion are applied at the corresponding
frames of each particle's existence.
■ Event Duration Any keys set for icon motion are applied to each particle
relative to the frame at which it first enters the event.
Icon Size Sets the size of the operator icon. This setting is for visibility only;
it doesn't affect particle behavior.
Uniqueness group
The Uniqueness setting enables randomization of the speed variation range.
Particle Flow | 2885