Apple Motion 2 User Manual
Page 605
Chapter 8
Working With Particles
605
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Wireframe: Each particle is represented by a bounding box. Since the bounding
boxes are good indicators of each particle’s orientation in the system, this preview
mode is useful for evaluating the movements of individual particles. For example, it’s
easy to see the angle of rotation for particles that are spinning or following a
complex motion path.
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Image: The final particle system effect, as it appears in your final render.
Random Seed: Although particle systems seem random, they’re actually deterministic.
This means that the random variation in each particle system is created based on the
number shown here. Unless this seed number is changed, a particle system with the
same parameter settings always plays back with the same motion. If you don’t like the
current random motion or distribution of the particle system, you can change the seed
number by typing a new number or clicking Generate. This changes the random
calculations performed for that system. This parameter is not available if the emitter
contains more than one particle cell. For more information about the random nature of
particle systems, see “
The Predictability of Particle Systems
Particle Source or individual cells: In particle systems with more than one cell, each
cell appears at the bottom of the Emitter tab. Each cell parameter has a checkbox you
can use to enable or disable that cell, a name field, and an image well for that object.
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