Apple Motion 3 - Manual (Page 704)

704 Chapter 8 Working with Particles
The Attach to Emitter parameter in the Particle Cell tab of the Inspector modifies this
behavior. When set to 0%, the particles are completely independent of the emitter.
When set to 100%, the particles try to keep up with the position of the animated
emitter. Depending on any applied behaviors, such as Drag, the particles may not be
able to keep up with the emitter.
Modifying an emitter’s other transformation parameters (Rotation, Scale, Shear, and
Anchor Point) changes the distribution of particles from that emitter and transforms
each particle. For example, if you create an emitter, then modify its Shear parameter,
the distribution of the emitted particles changes to reflect the new plane of the
emitter, and the particles are sheared along the same plane.
Blend Mode
Any changes you make to the opacity or blend mode parameters for an emitter are
applied to the particle system as a whole—the result of the emitter is blended into the
scene. For more information about blend modes, see “
Using Blend Modes ” on
page 290. For more information about the Preserve Opacity setting, see “ Preserve
Opacity Option ” on page 289.
Note: Within the emitter, the particles can be blended additively or normally (using the
Additive Blend checkbox).
Lighting
A 2D or 3D emitter can interact with lights in a 3D project. As with all layers, the
Shading pop-up menu must be set to On or Inherited for the lights to affect the
particles. For more information on using lights, see “
3D Compositing ” in the Motion
Supplemental Documentation PDF.
Drop Shadow
Drop shadows can be applied to a 2D particle system. When the Drop Shadow
parameter is enabled for the source object (in the Properties tab in the Inspector), each
generated particle appears with a drop shadow. For more information on working with
drop shadows, see “
Drop Shadows ” on page 309.
Analog Modulator particle system preset After Shear effect is applied