Instruction Manual

Chapter 14 Particles 516
Particle systems and layer sizes
Particle systems often create particles that grow or move o the Canvas before they die. This
can make the size of a layer or group much larger than the dimensions of the Canvas. Although
the particles are not visible after they move o the Canvas (unless Show Full View Area is turned
on in the View menu), they are still present in the project and are processed. If you apply a lter
to a layer containing growing particles, or use that layer as a source object, select the Fixed
Resolution checkbox in the Group Inspector (available only when a group is the selected object).
The Fixed Resolution parameter lets you set the specic width and height of a group, cropping
anything beyond those values. For more information, see Constrain group size on page 160.
Note: Using a movie with applied lters as a particle cell source adversely impacts your
computer’s processing performance. For better performance, export your sequence with the
lter applied, then import it back into Motion and use the movie as the cell source.
Create particle systems
Add particle systems to a project
There are two basic ways to add a particle system to a project: choose a preset from the Particle
Emitters category of the Library, or create a custom particle system using your own image, video
clip, or shape.
Add a preset particle system from the Library
The easiest way to add a particle system to your project is to use a preset in the Particle Emitters
category of the Library. There are many types of particle eects to choose from. If you nd one
close to what you need, you can easily customize its parameters after you add it to your project.
Particle systems are added to a project exactly like any other object in Motion.
67% resize factor