Apple Motion 4 - Manual (Page 1231)

To Disable Rendering of Lighting
µ
Click the Render pop-up menu in the Canvas Toolbar and choose Lighting or press
Option-L.
For information on overriding this setting during export, see Overriding Project Settings
Selected in the Render Pop-Up Menu
Shadows
Motion scenes that include Point or Spot lights can recreate more natural, realistic effects
by casting shadows. Shadows are created when opaque or semi-opaque object blocks
light from hitting another object. In order to see a shadow in Motion, you need at least
three things: A shadow-casting light source, an object to cast a shadow, and another
object upon which the shadow is cast. Multiple lights will cast multiple shadows that may
or may not be visible depending on the relative positions and settings of the objects in
the scene.
Note: Ambient and Directional lights do not cast shadows.
Warning: Some changes you make to 3D objects with shadows applied may cause the
shadows to disappear. This occurs when the change causes rasterization of the 3D
object—adjusting the opacity of a group or turning on the glow attributes for a text
object, for example. Flattening the 3D group will allow it to cast shadows again. For
more information about disappearing shadows, see
Shadows and Rasterization .
In Motion, you can control whether a light source will create shadows, and whether each
object in the scene receives shadows and/or casts shadows. You can even have an object
cast a shadow when it is itself invisible. The strength, sharpness, shape, and position of
the shadow depends on the type and positions of the lights and relative position of all
three objects.
1231 Chapter 18 3D Compositing