3
Table Of Contents
- Motion User Manual
- Contents
- Motion 3 Documentation and Resources
- Getting to Know Motion
- Creating and Managing Projects
- Creating New Projects
- Managing Projects
- Editing Project Properties
- Browsing Media Files in Motion
- File Types Supported by Motion
- Adding Media to Your Project
- Managing Layers in Your Project
- Deleting Objects from a Project
- Exchanging Media in a Project
- Object Media Tab Parameters
- Using Media in the Library
- Behaviors and Filters
- Third-Party Filters
- Image Units (Filters)
- Generators
- Image Units (Generators)
- Particle Emitters
- Replicators
- Shapes
- Gradients
- Fonts and LiveFonts
- Text Styles
- Shape Styles
- Music and Photos
- Content
- Favorites and the Favorites Menu
- Adding Your Own Content to the Library
- Using Custom Objects from the Library
- When Library Media Becomes Unavailable
- Organizing Groups and Layers in Motion
- Background of Your Project
- Selecting Layers and Groups in the Layers Tab
- Reorganizing in the Layers Tab
- Nesting Groups Inside Other Groups
- Grouping and Ungrouping Layers
- Showing and Hiding Groups and Layers
- Fixing the Size of a Group
- Locking Groups and Layers
- Collapsing and Uncollapsing Group Hierarchies
- Renaming Groups
- Searching for Groups and Layers
- Sorting Objects in the Media Tab
- Customizing and Creating New Templates
- Basic Compositing
- Using the Timeline
- Using Behaviors
- Behaviors Versus Keyframes
- Browsing for Behaviors
- Applying and Removing Behaviors
- Modifying Behaviors
- Working with Behaviors
- Changing the Timing of Behaviors
- Animating Behavior Parameters
- Saving and Sharing Custom Behaviors
- Behavior Descriptions
- Basic Motion Behaviors
- Examples of Using Basic Motion Behaviors
- Parameter Behaviors
- Examples of Using Parameter Behaviors
- Audio, Camera, Motion Tracking, Particles, Replicator, Shape, and Text Behaviors
- Retiming Behaviors
- Retiming Behaviors Versus Timing Controls in the Inspector
- Simulation Behaviors
- Examples of Using Simulation Behaviors
- Behavior Examples
- Keyframes and Curves
- Using Text
- Using Text in Motion
- Using Text as Particle and Replicator Source Objects
- Setting Layer Duration Preferences
- Working with Text
- About Fonts
- Using the Text Tools
- Editing Text in the Inspector
- Using Text Animation and Text Sequence Behaviors
- Using Other Behaviors With Text
- Using Behaviors to Animate Text in 3D
- Animating Text with Keyframes
- Using LiveFonts
- Using Text in Motion
- Working with Particles
- Using the Replicator
- The Difference Between a Replicator and a Particle System
- Anatomy of a Replicator
- Using the Replicator
- Using Replicators in 3D
- Applying Masks to the Replicator
- Advanced Replicator Controls
- Animating Replicator Parameters
- Using the Sequence Replicator Behavior
- Using Behaviors with Replicators
- Applying Filters to Replicators
- Saving Custom Replicators to the Library
- Using Filters
- About Filters
- Working with Filters
- An Introduction to Filters
- Working with Filters
- Enabling, Renaming, and Locking Filters
- Copying, Pasting, and Moving Filters
- Reordering Filters
- Changing Filter Timing
- About Rasterization
- Blur Filters
- Blur Filters Without the Mix Parameter
- Border Filters
- Color Correction Filters
- Distortion Filters
- Glow Filters
- Keying Filters
- Matte Filters
- Sharpen Filters
- Stylize Filters
- Tiling Filters
- Working with Third-Party Filters
- Working with Generators
- Using Shapes and Masks
- The Difference Between Shapes, Paint Strokes, and Masks
- Shape and Mask Drawing Tools
- Creating and Editing Shapes
- Illustrating Using the Shape Tools
- Shape Parameters in the Inspector
- Animating Shapes
- Saving Shapes and Shape Styles
- Masking Layers to Create Transparency
- Applying Image Masks to a Layer
- Using Masks to Aid Keying Effects
- Manipulating Alpha Channels Using Filters
- Working with Audio
- Exporting Motion Projects
- Keyboard Shortcuts
- Video and File Formats
- Supported File Formats
- Standard Definition Versus High Definition Video Formats
- Popular Video Codecs for File Exchange
- What Is Field Order?
- Using Square or Nonsquare Pixels When Creating Graphics
- Differences in Color Between Computer and Video Graphics
- Using Fonts and Creating Line Art for Video
- Scaling Imported High-Resolution Graphics
- Creating Graphics for HD Projects
- Working with FinalCutPro
- Using Motion with FinalCutPro
- Using Motion Templates in FinalCutPro
- Using Gestures
- Using Motion and After Effects
- Index
Chapter 12 Using Shapes and Masks 1077
Write On
The Write On behavior provides a quick way to draw a paint stroke or outline on the
Canvas over time. This allows you to create a handwritten text effect, create the ever-
popular old serial travel map effect, create a hand-sketched alpha mask for a transition
or reveal, create an animated graph for a business presentation, produce graphics to
prevent monitor burn-ins, and so on. The behavior can be automatically applied to a
paint stroke created with the Paint Stroke tool or added to an existing shape. You can
have the shape draw, erase, draw and erase, draw in reverse, and so on, over time.
When Write On is applied to a shape, such as a circle or rectangle, only the outline of
the shape is drawn.
Note: You can manually animate the First Point Offset and Last Point Offset parameters
in the Style pane of the Shape Inspector to achieve the same effect as the Write On
behavior.
The Write On HUD contains the Shape Outline, Stroke Length, Stroke Offset, Direction,
Speed, and Custom Speed parameters. These controls, and the additional parameters in
the Inspector, are described below.
Parameters in the Inspector
Shape Outline: This pop-up menu determines whether the stroke is drawn, erased, or
drawn and erased.
 Draw: Draws the stroke over the duration of the behavior.
 Erase: The stroke is completely drawn at the beginning of the behavior, and is
erased over the duration of the behavior.
 Draw and Erase: The stroke is drawn, then erased over the duration of the behavior.
 Erase and Draw: The stroke is completely drawn at the beginning of the behavior, is
erased, then is drawn again.
Stroke Length: This slider defines the length, as a percentage, of the drawn or erased
stroke. A value of 100% uses the entire length of the stroke, bounded by the First Point
Offset and Last Point Offset parameters. If Stroke Length is set to 50%, once 50% of the
stroke is drawn on, it begins to erase (from the beginning of the stroke) so that only
half of the length of the stroke is ever displayed over the duration of the behavior.
Stroke Offset: This slider offsets where the stroke begins on the shape. The value is
expressed as a percentage of the total length of the shape from the start point defined
on the shape.
Direction: This pop-up menu sets the direction in which the stroke is drawn.
Speed: A pop-up menu that defines the stroke’s “draw-on” velocity from the first to the
last point in the stroke. There are nine options: