2009

to define the particles' maximum age. For an example of usage, see Material
Dynamic operator
on page 2925.
Interface
The user interface appears in the Parameters panel, on the right side of the
Particle View dialog.
Remove group
Choose whether to delete all particles, selected particles, or particles past a
specific age.
The Uniqueness setting enables randomization of maximum particle age using
the By Particle Age > Variation setting.
All Particles Deletes all particles in the event immediately.
Selected Particles Only Deletes particles selected at the Particle sub-object
level in the event immediately. See
Selection rollout on page 2833.
By Particle Age Deletes particles in the event after they've existed for a specific
length of time, with an optional random variation. Choosing this makes the
Life Span and Variation settings available.
Life Span The number of frames of life allowed to the particles. After this
period, they're deleted. Default=60.
Variation The maximum amount by which Life Span may vary. To get each
particle's actual life span, this value is multiplied by a random number between
-1.0 and 1.0, and then added to Life Span. Default=10.
Particle Flow | 2849