Apple Motion 5.1.1 - Manual (Page 536)

Chapter 14 Particles 536
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Render Order: A pop-up menu that determines whether new particles are drawn on top of or
underneath particles that have already been generated. There are two options:
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Oldest First: New particles appear on top of older particles.
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Oldest Last: New particles appear underneath older particles.
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Interleave Particles: Selecting this checkbox mixes particles generated from multiple cells
together. Deselecting this checkbox layers particles in the same order as the cells that
generate them.
Note: This option has no effect with particle systems containing only one cell. Leaving this
option off speeds rendering with multiple cells.
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Face Camera: This checkbox, available when 3D is enabled, forces the particle system to
face the active scene camera. For more information on cameras, see
Cameras overview on
page 928.
Cell parameters
The parameters in the Cell Controls group in the Inspector determine how particles behave after
they are released from the emitter. Cell controls appear at the bottom of the Emitter Inspector
when a particle system is selected, and in the Particle Cell Inspector when a particle cell
is selected.
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