Apple Motion 5.1.1 - Manual (Page 531)

Chapter 14 Particles 531
•
Image: Particles emerge from within an area defined by an image or from only the edges
of the image. The image may or may not have an alpha channel. If it does, the shape of
the alpha channel can also be used to define the emitter shape. The Image shape displays
additional parameters. The following image on the right shows the image used as the
emitter image source. The image on the left shows the particles emerging from within
the image.
To apply an image as the image source for a particle emitter, drag the image to the Image
Source well in the Emitter Inspector (after Image is chosen from the Shape pop-up menu).
•
Box: This option is available when the 3D checkbox is selected in the Emitter Inspector.
Particles are emitted from a three-dimensional cube along its surface (Outline), or in a
tile-fill or random-fill pattern. Using the onscreen controls (with the Adjust Item tool), you
can specify the size and location of the rectangle. Drag the front horizontal edge to adjust
height; drag the front vertical edge to adjust width; drag a back edge to adjust depth; drag
a front corner to simultaneously adjust the width and height. To reposition the emitter, drag
in the shape (but not on an edge or corner point). Depending on the selected Arrangement,
the Box shape displays additional parameters. In the following image, the box’s Arrangement
is set to Tile Fill.
•
Sphere: This option is available when the 3D checkbox is selected in the Emitter Inspector.
Particles are emitted from a three-dimensional sphere along its surface (Outline), or in a
tile-fill or random-fill pattern. Using the onscreen controls (with the Adjust Item tool), you
can specify the radius and location of the sphere. Drag the outline of the sphere to adjust
its radius; drag in the sphere to reposition it in the Canvas. When Sphere is selected, the
Arrangement parameter becomes available. Depending on the selected Arrangement, the
Sphere shape displays additional parameters.
67% resize factor