Apple Motion 3 User Manual
Page 705
Chapter 8
Working with Particles
705
Note: This parameter is not available with the Box or Sphere emitter shapes, or when
the 3D checkbox is turned on in the Emitter tab of the Inspector.
Four Corner
The Four Corner controls in the Properties tab allow you to stretch an emitter into
different polygonal shapes by moving the corner points. Adjusting the corners of the
emitter affects the entire system.
Note: This parameter is not available with the Box or Sphere emitter shapes, or when
the 3D checkbox is turned on in the Emitter tab of the Inspector.
Crop
The Crop controls in the Properties tab allow you to hide portions of a particle system.
You can also use the onscreen cropping controls by choosing the Adjust Crop tool from
the Toolbar, then dragging any of the replicator object’s four edges or corners.
Note: This parameter is not available with the Box or Sphere emitter shapes, or when
the 3D checkbox is turned on in the Emitter tab of the Inspector.
For more information on cropping objects in Motion, see “
Masks
As shown in the following images, you can apply masks to the cell source layer of a
particle emitter.
Original source layer
Bezier mask applied to
source layer
Resulting particle system