Applying filters to particle systems – Apple Motion 2 User Manual
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Chapter 8
Working With Particles
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Birth and Death Values: Specify starting and ending scale percentages that are used
to animate each particle’s size over its lifetime. Two parameters appear in the
Inspector (and become available in the Dashboard) when this option is selected.
Scale At Birth determines the initial size of particles when they are first created. Scale
At Death determines the size of each particle at the end of its lifetime. The scale
amount generated by this behavior for a specific particle at a specific time is
multiplied by the pre-existing particle Scale.
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Custom: Displays the Custom Scale parameter in the Inspector (and becomes
available in the Dashboard), allowing you to set the size of each particle generated
by that cell. You can attach a parameter behavior to this parameter to create different
animated effects, or keyframe the parameter. The duration of the behavior is treated
as the particle’s lifetime. For more information on using Parameter behaviors, see
“
Applying Filters to Particle Systems
Filters can only be applied to a particle system’s emitter. As a result, filters always affect
the entire particle system, including every single cell, as if it was a single object.
Individual cells cannot have separate filters applied to them.
For more information on applying filters to objects in your project, see “
on page 701. For more information on keyframing particle system parameters, see
“
Animating Objects in Particle Systems
Light Valve particle system default
Light Valve with Bulge filter applied
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