Apple Motion 4 User Manual

Page 316

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Receives Shadows:

Controls whether or not neighboring objects’ shadows will affect

the current object. When this checkbox is deselected, light will affect the object as if the
shadow-casting object did not exist.

Shadows Only:

Allows an object to block light and cast a shadow, while the object itself

does not appear in the scene.

Note: For more information on using shadows, see

Shadows

.

Reflection Parameters

Reflectivity:

A slider that controls the shininess of the object’s surface. When set to 0%,

there is no reflectivity. When set to 100%, the object is totally reflective, like a mirror.

Blur Amount:

A slider that controls how blurry the reflection appears, creating the

appearance of soft-focus due to the surface quality of the reflecting object.

Falloff:

Determines whether the reflection fades with distance from the object, producing

a more realistic result. Click the disclosure triangle to show the additional options within
the Falloff section: Begin Distance, End Distance, and Exponent (how quickly the reflection
gets fainter as the object gets further from the surface).

Blend Mode:

A pop-up menu that determines the blend mode used for the reflection.

Note: For more information on using reflections and their parameters, see

Reflections

.

Additional Parameters in the Properties Tab

Drop Shadow:

Turns the drop shadow of an object on and off. For more information

about working with drop shadows, see

Drop Shadows

.

Four Corner:

Turns corner-pinning on and off. If an object has been corner-pinned and

this checkbox is deselected, the object resumes its original shape, although the
corner-pinning coordinates are maintained. Reselecting the checkbox re-enables the
corner-pinning effect specified by the Four Corner coordinate parameters.

Click the disclosure triangle to display four two-dimensional parameters that define the
polygonal transform of a corner-pinned object. Individual parameters for the Bottom Left,
Bottom Right, Top Right, and Top Left corners of the bounding box that surrounds an
object have individual X and Y coordinates.

Crop:

Turns cropping on and off. If an object has been cropped and this checkbox is

deselected, the object resumes its original size, although the cropping values are
maintained. Reselecting the checkbox re-enables the cropping effect specified by the
crop parameters.

316

Chapter 7

Basic Compositing

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