Apple Motion 4 - Manual (Page 1123)

Use the following guidelines when working in 3D with paint strokes:
• Even in a 2D project, a paint stroke’s general properties can be adjusted in 3D space.
For example, you can modify the Z parameter using the Position, Scale, Rotation,
and Anchor Point controls in the Properties tab of the Inspector.
• Paint strokes do not receive reflections (controlled in the Properties tab of the
Inspector) unless the Local 3D checkbox is deselected.
• Paint strokes do not cast shadows (controlled in the Properties tab of the Inspector)
unless the Local 3D checkbox is deselected.
• Lighting does not effect paint strokes unless the Local 3D checkbox is deselected.
Important: Although the Local 3D checkbox is selected, paint strokes do not intersect
with the “global” 3D world. This means that paint strokes can exist in 3D space, but do
not intersect with objects that exist inside their own group, or objects in other groups.
A 3D paint stroke is composited with the rest of the objects in the project based on layer
order.
Face Camera: Available only when the Local 3D checkbox is selected, the stroke dabs
actively face the camera if the camera is rotated or if the paint stroke is rotated and/or
animated when this checkbox is selected. When the Face Camera checkbox is deselected,
the elements face forward in the replicator pattern and appear flat (unless the source
layer or paint dabs are rotated in 3D space).
Because paint source dabs are 2D (flat) objects, the pattern elements are not visible when
you use the orthogonal camera views, such as Left, Right, and Top (unless the source
layer or dabs are rotated in 3D space). This is because orthogonal views are at right angles
(perpendicular) to the elements. For more information on using cameras, see
Cameras .
Dab Depth Ordered: Available only when the Local 3D checkbox is selected, paint dab
ordering remains consistent when the paint stroke is rotated in X or Y space when this
checkbox is selected. When not selected, the dabs jump in front of each other each time
the stroke rotates 180 degrees.
Jitter: This slider and value field allow you to create a little chaos in your paint dabs. The
higher the value, the more dispersed the dabs. Click the disclosure triangle to display the
individual X and Y controls. Jitter can be animated so that the dabs behave like particles.
• Jitter: Moves the dabs both parallel and perpendicular to the stroke’s curves at its
control points.
• X: Moves the dabs parallel to the stroke’s curves at its control points.
• Y: Moves the dabs perpendicular to the stroke’s curves at its control points.
1123 Chapter 17 Using Shapes, Masks, and Paint Strokes