|Known Indirect Subclasses|
ParticleModifier is used by various
ParticleEmitter properties to set not only how
particles will initially behave, but how they will behave over time or across distance. For
example, you can use ParticleModifier with
to make particles initially appear with 50% to 75% opacity, and then have their opacity
decline to 20% over 4000 ms.
ParticleModifier is always constructed with the initial range for the property. You can then add time or distance intervals specifying how the property should change over time for each particle. See the ParticleModifier subclasses for details.